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TDengine
提交 7617a973 编写于 作者: T tickduan
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Merge branch 'master' into cq

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浏览文件 @ 7617a973
...@@ -94,7 +94,7 @@ def pre_test(){ ...@@ -94,7 +94,7 @@ def pre_test(){
make > /dev/null make > /dev/null
make install > /dev/null make install > /dev/null
cd ${WKC}/tests cd ${WKC}/tests
pip3 install ${WKC}/src/connector/python/linux/python3/ pip3 install ${WKC}/src/connector/python/
''' '''
return 1 return 1
} }
......
documentation20/cn/08.connector/docs.md
浏览文件 @ 7617a973
...@@ -399,27 +399,22 @@ Python连接器的使用参见[视频教程](https://www.taosdata.com/blog/2020/ ...@@ -399,27 +399,22 @@ Python连接器的使用参见[视频教程](https://www.taosdata.com/blog/2020/
#### Linux #### Linux
用户可以在源代码的src/connector/python（或者tar.gz的/connector/python）文件夹下找到python2和python3的connector安装包。用户可以通过pip命令安装： 用户可以在源代码的src/connector/python（或者tar.gz的/connector/python）文件夹下找到connector安装包。用户可以通过pip命令安装：
​ `pip install src/connector/python/linux/python2/` ​ `pip install src/connector/python/`
或 或
​ `pip3 install src/connector/python/linux/python3/` ​ `pip3 install src/connector/python/`
#### Windows #### Windows
在已安装Windows TDengine 客户端的情况下， 将文件"C:\TDengine\driver\taos.dll" 拷贝到 "C:\windows\system32" 目录下, 然后进入Windwos <em>cmd</em> 命令行界面 在已安装Windows TDengine 客户端的情况下， 将文件"C:\TDengine\driver\taos.dll" 拷贝到 "C:\windows\system32" 目录下, 然后进入Windwos <em>cmd</em> 命令行界面
```cmd ```cmd
cd C:\TDengine\connector\python\windows cd C:\TDengine\connector\python
python -m pip install python2\ python -m pip install .
```
或
```cmd
cd C:\TDengine\connector\python\windows
python -m pip install python3\
``` ```
* 如果机器上没有pip命令，用户可将src/connector/python/python3或src/connector/python/python2下的taos文件夹拷贝到应用程序的目录使用。 * 如果机器上没有pip命令，用户可将src/connector/python下的taos文件夹拷贝到应用程序的目录使用。
对于windows 客户端，安装TDengine windows 客户端后，将C:\TDengine\driver\taos.dll拷贝到C:\windows\system32目录下即可。 对于windows 客户端，安装TDengine windows 客户端后，将C:\TDengine\driver\taos.dll拷贝到C:\windows\system32目录下即可。
### 使用 ### 使用
......
packaging/tools/makeclient_power.sh
浏览文件 @ 7617a973
...@@ -156,20 +156,11 @@ if [[ "$pagMode" != "lite" ]] && [[ "$cpuType" != "aarch32" ]]; then ...@@ -156,20 +156,11 @@ if [[ "$pagMode" != "lite" ]] && [[ "$cpuType" != "aarch32" ]]; then
fi fi
cp -r ${connector_dir}/python ${install_dir}/connector cp -r ${connector_dir}/python ${install_dir}/connector
sed -i '/password/ {s/taosdata/powerdb/g}' ${install_dir}/connector/python/linux/python2/taos/cinterface.py sed -i '/password/ {s/taosdata/powerdb/g}' ${install_dir}/connector/python/taos/cinterface.py
sed -i '/password/ {s/taosdata/powerdb/g}' ${install_dir}/connector/python/linux/python3/taos/cinterface.py
sed -i '/password/ {s/taosdata/powerdb/g}' ${install_dir}/connector/python/windows/python2/taos/cinterface.py sed -i '/password/ {s/taosdata/powerdb/g}' ${install_dir}/connector/python/taos/subscription.py
sed -i '/password/ {s/taosdata/powerdb/g}' ${install_dir}/connector/python/windows/python3/taos/cinterface.py
sed -i '/self._password/ {s/taosdata/powerdb/g}' ${install_dir}/connector/python/taos/connection.py
sed -i '/password/ {s/taosdata/powerdb/g}' ${install_dir}/connector/python/linux/python2/taos/subscription.py
sed -i '/password/ {s/taosdata/powerdb/g}' ${install_dir}/connector/python/linux/python3/taos/subscription.py
sed -i '/password/ {s/taosdata/powerdb/g}' ${install_dir}/connector/python/windows/python2/taos/subscription.py
sed -i '/password/ {s/taosdata/powerdb/g}' ${install_dir}/connector/python/windows/python3/taos/subscription.py
sed -i '/self._password/ {s/taosdata/powerdb/g}' ${install_dir}/connector/python/linux/python2/taos/connection.py
sed -i '/self._password/ {s/taosdata/powerdb/g}' ${install_dir}/connector/python/linux/python3/taos/connection.py
sed -i '/self._password/ {s/taosdata/powerdb/g}' ${install_dir}/connector/python/windows/python2/taos/connection.py
sed -i '/self._password/ {s/taosdata/powerdb/g}' ${install_dir}/connector/python/windows/python3/taos/connection.py
fi fi
# Copy release note # Copy release note
# cp ${script_dir}/release_note ${install_dir} # cp ${script_dir}/release_note ${install_dir}
......
packaging/tools/makepkg_power.sh
浏览文件 @ 7617a973
...@@ -179,20 +179,11 @@ if [[ "$pagMode" != "lite" ]] && [[ "$cpuType" != "aarch32" ]]; then ...@@ -179,20 +179,11 @@ if [[ "$pagMode" != "lite" ]] && [[ "$cpuType" != "aarch32" ]]; then
fi fi
cp -r ${connector_dir}/python ${install_dir}/connector/ cp -r ${connector_dir}/python ${install_dir}/connector/
sed -i '/password/ {s/taosdata/powerdb/g}' ${install_dir}/connector/python/linux/python2/taos/cinterface.py sed -i '/password/ {s/taosdata/powerdb/g}' ${install_dir}/connector/python/taos/cinterface.py
sed -i '/password/ {s/taosdata/powerdb/g}' ${install_dir}/connector/python/linux/python3/taos/cinterface.py
sed -i '/password/ {s/taosdata/powerdb/g}' ${install_dir}/connector/python/windows/python2/taos/cinterface.py sed -i '/password/ {s/taosdata/powerdb/g}' ${install_dir}/connector/python/taos/subscription.py
sed -i '/password/ {s/taosdata/powerdb/g}' ${install_dir}/connector/python/windows/python3/taos/cinterface.py
sed -i '/self._password/ {s/taosdata/powerdb/g}' ${install_dir}/connector/python/taos/connection.py
sed -i '/password/ {s/taosdata/powerdb/g}' ${install_dir}/connector/python/linux/python2/taos/subscription.py
sed -i '/password/ {s/taosdata/powerdb/g}' ${install_dir}/connector/python/linux/python3/taos/subscription.py
sed -i '/password/ {s/taosdata/powerdb/g}' ${install_dir}/connector/python/windows/python2/taos/subscription.py
sed -i '/password/ {s/taosdata/powerdb/g}' ${install_dir}/connector/python/windows/python3/taos/subscription.py
sed -i '/self._password/ {s/taosdata/powerdb/g}' ${install_dir}/connector/python/linux/python2/taos/connection.py
sed -i '/self._password/ {s/taosdata/powerdb/g}' ${install_dir}/connector/python/linux/python3/taos/connection.py
sed -i '/self._password/ {s/taosdata/powerdb/g}' ${install_dir}/connector/python/windows/python2/taos/connection.py
sed -i '/self._password/ {s/taosdata/powerdb/g}' ${install_dir}/connector/python/windows/python3/taos/connection.py
fi fi
# Copy release note # Copy release note
# cp ${script_dir}/release_note ${install_dir} # cp ${script_dir}/release_note ${install_dir}
......
src/client/src/tscParseInsert.c
浏览文件 @ 7617a973
...@@ -1348,30 +1348,27 @@ int tsParseSql(SSqlObj *pSql, bool initial) { ...@@ -1348,30 +1348,27 @@ int tsParseSql(SSqlObj *pSql, bool initial) {
} }
// make a backup as tsParseInsertSql may modify the string // make a backup as tsParseInsertSql may modify the string
char* sqlstr = strdup(pSql->sqlstr);
ret = tsParseInsertSql(pSql); ret = tsParseInsertSql(pSql);
if ((sqlstr == NULL) || (pSql->parseRetry >= 1) || if ((pSql->parseRetry >= 1) || (ret != TSDB_CODE_TSC_SQL_SYNTAX_ERROR && ret != TSDB_CODE_TSC_INVALID_SQL)) {
(ret != TSDB_CODE_TSC_SQL_SYNTAX_ERROR && ret != TSDB_CODE_TSC_INVALID_SQL)) {
free(sqlstr);
} else { } else {
tscResetSqlCmd(pCmd, true); tscResetSqlCmd(pCmd, true);
free(pSql->sqlstr);
pSql->sqlstr = sqlstr;
pSql->parseRetry++; pSql->parseRetry++;
if ((ret = tsInsertInitialCheck(pSql)) == TSDB_CODE_SUCCESS) { if ((ret = tsInsertInitialCheck(pSql)) == TSDB_CODE_SUCCESS) {
ret = tsParseInsertSql(pSql); ret = tsParseInsertSql(pSql);
} }
} }
} else { } else {
SSqlInfo SQLInfo = qSqlParse(pSql->sqlstr); SSqlInfo sqlInfo = qSqlParse(pSql->sqlstr);
ret = tscToSQLCmd(pSql, &SQLInfo); ret = tscToSQLCmd(pSql, &sqlInfo);
if (ret == TSDB_CODE_TSC_INVALID_SQL && pSql->parseRetry == 0 && SQLInfo.type == TSDB_SQL_NULL) { if (ret == TSDB_CODE_TSC_INVALID_SQL && pSql->parseRetry == 0/* && sqlInfo.type == TSDB_SQL_NULL*/) {
tscDebug("0x%"PRIx64 " parse sql failed, retry again after clear local meta cache", pSql->self);
tscResetSqlCmd(pCmd, true); tscResetSqlCmd(pCmd, true);
pSql->parseRetry++; pSql->parseRetry++;
ret = tscToSQLCmd(pSql, &SQLInfo);
ret = tscToSQLCmd(pSql, &sqlInfo);
} }
SqlInfoDestroy(&SQLInfo); SqlInfoDestroy(&sqlInfo);
} }
/* /*
......
src/client/src/tscSQLParser.c
浏览文件 @ 7617a973
...@@ -361,11 +361,18 @@ int32_t tscToSQLCmd(SSqlObj* pSql, struct SSqlInfo* pInfo) { ...@@ -361,11 +361,18 @@ int32_t tscToSQLCmd(SSqlObj* pSql, struct SSqlInfo* pInfo) {
const char* msg2 = "name too long"; const char* msg2 = "name too long";
SCreateDbInfo* pCreateDB = &(pInfo->pMiscInfo->dbOpt); SCreateDbInfo* pCreateDB = &(pInfo->pMiscInfo->dbOpt);
if (tscValidateName(&pCreateDB->dbname) != TSDB_CODE_SUCCESS) { if (pCreateDB->dbname.n >= TSDB_DB_NAME_LEN) {
return invalidSqlErrMsg(tscGetErrorMsgPayload(pCmd), msg2);
}
char buf[TSDB_DB_NAME_LEN] = {0};
SStrToken token = taosTokenDup(&pCreateDB->dbname, buf, tListLen(buf));
if (tscValidateName(&token) != TSDB_CODE_SUCCESS) {
return invalidSqlErrMsg(tscGetErrorMsgPayload(pCmd), msg1); return invalidSqlErrMsg(tscGetErrorMsgPayload(pCmd), msg1);
} }
int32_t ret = tNameSetDbName(&pTableMetaInfo->name, getAccountId(pSql), &(pCreateDB->dbname)); int32_t ret = tNameSetDbName(&pTableMetaInfo->name, getAccountId(pSql), &token);
if (ret != TSDB_CODE_SUCCESS) { if (ret != TSDB_CODE_SUCCESS) {
return invalidSqlErrMsg(tscGetErrorMsgPayload(pCmd), msg2); return invalidSqlErrMsg(tscGetErrorMsgPayload(pCmd), msg2);
} }
......
src/client/src/tscServer.c
浏览文件 @ 7617a973
...@@ -2517,7 +2517,7 @@ static int32_t getTableMetaFromMnode(SSqlObj *pSql, STableMetaInfo *pTableMetaIn ...@@ -2517,7 +2517,7 @@ static int32_t getTableMetaFromMnode(SSqlObj *pSql, STableMetaInfo *pTableMetaIn
pNew->fp = tscTableMetaCallBack; pNew->fp = tscTableMetaCallBack;
pNew->param = (void *)pSql->self; pNew->param = (void *)pSql->self;
tscDebug("0x%"PRIx64" metaRid from %" PRId64 " to %" PRId64 , pSql->self, pSql->metaRid, pNew->self); tscDebug("0x%"PRIx64" metaRid from %" PRId64 " to 0x%" PRIx64 , pSql->self, pSql->metaRid, pNew->self);
pSql->metaRid = pNew->self; pSql->metaRid = pNew->self;
......
src/common/src/tglobal.c
浏览文件 @ 7617a973
...@@ -46,7 +46,7 @@ char tsEmail[TSDB_FQDN_LEN] = {0}; ...@@ -46,7 +46,7 @@ char tsEmail[TSDB_FQDN_LEN] = {0};
int32_t tsDnodeId = 0; int32_t tsDnodeId = 0;
// common // common
int32_t tsRpcTimer = 1000; int32_t tsRpcTimer = 300;
int32_t tsRpcMaxTime = 600; // seconds; int32_t tsRpcMaxTime = 600; // seconds;
int32_t tsMaxShellConns = 50000; int32_t tsMaxShellConns = 50000;
int32_t tsMaxConnections = 5000; int32_t tsMaxConnections = 5000;
......
go @ 7a26c432
比较 8ce6d865...7a26c432
Subproject commit 8ce6d86558afc8c0b50c10f990fd2b4270cf06fc Subproject commit 7a26c432f8b4203e42344ff3290b9b9b01b983d5
src/connector/python/.gitignore 0 → 100644
浏览文件 @ 7617a973
# Created by https://www.toptal.com/developers/gitignore/api/python
# Edit at https://www.toptal.com/developers/gitignore?templates=python
### Python ###
# Byte-compiled / optimized / DLL files
__pycache__/
*.py[cod]
*$py.class
# C extensions
*.so
# Distribution / packaging
.Python
build/
develop-eggs/
dist/
downloads/
eggs/
.eggs/
parts/
sdist/
var/
wheels/
pip-wheel-metadata/
share/python-wheels/
*.egg-info/
.installed.cfg
*.egg
MANIFEST
# PyInstaller
# Usually these files are written by a python script from a template
# before PyInstaller builds the exe, so as to inject date/other infos into it.
*.manifest
*.spec
# Installer logs
pip-log.txt
pip-delete-this-directory.txt
# Unit test / coverage reports
htmlcov/
.tox/
.nox/
.coverage
.coverage.*
.cache
nosetests.xml
coverage.xml
*.cover
*.py,cover
.hypothesis/
.pytest_cache/
pytestdebug.log
# Translations
*.mo
*.pot
# Django stuff:
*.log
local_settings.py
db.sqlite3
db.sqlite3-journal
# Flask stuff:
instance/
.webassets-cache
# Scrapy stuff:
.scrapy
# Sphinx documentation
docs/_build/
doc/_build/
# PyBuilder
target/
# Jupyter Notebook
.ipynb_checkpoints
# IPython
profile_default/
ipython_config.py
# pyenv
.python-version
# pipenv
# According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
# However, in case of collaboration, if having platform-specific dependencies or dependencies
# having no cross-platform support, pipenv may install dependencies that don't work, or not
# install all needed dependencies.
#Pipfile.lock
# poetry
#poetry.lock
# PEP 582; used by e.g. github.com/David-OConnor/pyflow
__pypackages__/
# Celery stuff
celerybeat-schedule
celerybeat.pid
# SageMath parsed files
*.sage.py
# Environments
# .env
.env/
.venv/
env/
venv/
ENV/
env.bak/
venv.bak/
pythonenv*
# Spyder project settings
.spyderproject
.spyproject
# Rope project settings
.ropeproject
# mkdocs documentation
/site
# mypy
.mypy_cache/
.dmypy.json
dmypy.json
# Pyre type checker
.pyre/
# pytype static type analyzer
.pytype/
# operating system-related files
# file properties cache/storage on macOS
*.DS_Store
# thumbnail cache on Windows
Thumbs.db
# profiling data
.prof
# End of https://www.toptal.com/developers/gitignore/api/python
src/connector/python/README.md 0 → 100644
浏览文件 @ 7617a973
# TDengine Connector for Python
[TDengine] connector for Python enables python programs to access TDengine, using an API which is compliant with the Python DB API 2.0 (PEP-249). It uses TDengine C client library for client server communications.
## Install
```sh
pip install git+https://github.com/taosdata/TDengine-connector-python
```
## Source Code
[TDengine] connector for Python source code is hosted on [GitHub](https://github.com/taosdata/TDengine-connector-python).
## License - AGPL
Keep same with [TDengine](https://github.com/taosdata/TDengine).
src/connector/python/examples/demo.py 0 → 100644
浏览文件 @ 7617a973
import taos
conn = taos.connect(host='127.0.0.1',
user='root',
passworkd='taodata',
database='log')
cursor = conn.cursor()
sql = "select * from log.log limit 10"
cursor.execute(sql)
for row in cursor:
print(row)
src/connector/python/linux/python2/README.md 已删除 100644 → 0
浏览文件 @ 398397bc
# TDengine python client interface
\ No newline at end of file
src/connector/python/linux/python2/setup.py 已删除 100644 → 0
浏览文件 @ 398397bc
import setuptools
with open("README.md", "r") as fh:
long_description = fh.read()
setuptools.setup(
name="taos",
version="2.0.9",
author="Taosdata Inc.",
author_email="support@taosdata.com",
description="TDengine python client package",
long_description=long_description,
long_description_content_type="text/markdown",
url="https://github.com/pypa/sampleproject",
packages=setuptools.find_packages(),
classifiers=[
"Programming Language :: Python :: 2",
"Operating System :: Linux",
],
)
src/connector/python/linux/python2/taos/cursor.py 已删除 100644 → 0
浏览文件 @ 398397bc
from .cinterface import CTaosInterface
from .error import *
from .constants import FieldType
class TDengineCursor(object):
"""Database cursor which is used to manage the context of a fetch operation.
Attributes:
.description: Read-only attribute consists of 7-item sequences:
> name (mondatory)
> type_code (mondatory)
> display_size
> internal_size
> precision
> scale
> null_ok
This attribute will be None for operations that do not return rows or
if the cursor has not had an operation invoked via the .execute*() method yet.
.rowcount:This read-only attribute specifies the number of rows that the last
.execute*() produced (for DQL statements like SELECT) or affected
"""
def __init__(self, connection=None):
self._description = []
self._rowcount = -1
self._connection = None
self._result = None
self._fields = None
self._block = None
self._block_rows = -1
self._block_iter = 0
self._affected_rows = 0
self._logfile = ""
if connection is not None:
self._connection = connection
def __iter__(self):
return self
def next(self):
if self._result is None or self._fields is None:
raise OperationalError("Invalid use of fetch iterator")
if self._block_rows <= self._block_iter:
block, self._block_rows = CTaosInterface.fetchRow(
self._result, self._fields)
if self._block_rows == 0:
raise StopIteration
self._block = list(map(tuple, zip(*block)))
self._block_iter = 0
data = self._block[self._block_iter]
self._block_iter += 1
return data
@property
def description(self):
"""Return the description of the object.
"""
return self._description
@property
def rowcount(self):
"""Return the rowcount of the object
"""
return self._rowcount
@property
def affected_rows(self):
"""Return the affected_rows of the object
"""
return self._affected_rows
def callproc(self, procname, *args):
"""Call a stored database procedure with the given name.
Void functionality since no stored procedures.
"""
pass
def log(self, logfile):
self._logfile = logfile
def close(self):
"""Close the cursor.
"""
if self._connection is None:
return False
self._reset_result()
self._connection = None
return True
def execute(self, operation, params=None):
"""Prepare and execute a database operation (query or command).
"""
if not operation:
return None
if not self._connection:
# TODO : change the exception raised here
raise ProgrammingError("Cursor is not connected")
self._reset_result()
stmt = operation
if params is not None:
pass
# global querySeqNum
# querySeqNum += 1
# localSeqNum = querySeqNum # avoid raice condition
# print(" >> Exec Query ({}): {}".format(localSeqNum, str(stmt)))
self._result = CTaosInterface.query(self._connection._conn, stmt)
# print(" << Query ({}) Exec Done".format(localSeqNum))
if (self._logfile):
with open(self._logfile, "a") as logfile:
logfile.write("%s;\n" % operation)
errno = CTaosInterface.libtaos.taos_errno(self._result)
if errno == 0:
if CTaosInterface.fieldsCount(self._result) == 0:
self._affected_rows += CTaosInterface.affectedRows(
self._result)
return CTaosInterface.affectedRows(self._result)
else:
self._fields = CTaosInterface.useResult(
self._result)
return self._handle_result()
else:
raise ProgrammingError(
CTaosInterface.errStr(
self._result), errno)
def executemany(self, operation, seq_of_parameters):
"""Prepare a database operation (query or command) and then execute it against all parameter sequences or mappings found in the sequence seq_of_parameters.
"""
pass
def fetchone(self):
"""Fetch the next row of a query result set, returning a single sequence, or None when no more data is available.
"""
pass
def fetchmany(self):
pass
def istype(self, col, dataType):
if (dataType.upper() == "BOOL"):
if (self._description[col][1] == FieldType.C_BOOL):
return True
if (dataType.upper() == "TINYINT"):
if (self._description[col][1] == FieldType.C_TINYINT):
return True
if (dataType.upper() == "TINYINT UNSIGNED"):
if (self._description[col][1] == FieldType.C_TINYINT_UNSIGNED):
return True
if (dataType.upper() == "SMALLINT"):
if (self._description[col][1] == FieldType.C_SMALLINT):
return True
if (dataType.upper() == "SMALLINT UNSIGNED"):
if (self._description[col][1] == FieldType.C_SMALLINT_UNSIGNED):
return True
if (dataType.upper() == "INT"):
if (self._description[col][1] == FieldType.C_INT):
return True
if (dataType.upper() == "INT UNSIGNED"):
if (self._description[col][1] == FieldType.C_INT_UNSIGNED):
return True
if (dataType.upper() == "BIGINT"):
if (self._description[col][1] == FieldType.C_BIGINT):
return True
if (dataType.upper() == "BIGINT UNSIGNED"):
if (self._description[col][1] == FieldType.C_BIGINT_UNSIGNED):
return True
if (dataType.upper() == "FLOAT"):
if (self._description[col][1] == FieldType.C_FLOAT):
return True
if (dataType.upper() == "DOUBLE"):
if (self._description[col][1] == FieldType.C_DOUBLE):
return True
if (dataType.upper() == "BINARY"):
if (self._description[col][1] == FieldType.C_BINARY):
return True
if (dataType.upper() == "TIMESTAMP"):
if (self._description[col][1] == FieldType.C_TIMESTAMP):
return True
if (dataType.upper() == "NCHAR"):
if (self._description[col][1] == FieldType.C_NCHAR):
return True
return False
def fetchall_row(self):
"""Fetch all (remaining) rows of a query result, returning them as a sequence of sequences (e.g. a list of tuples). Note that the cursor's arraysize attribute can affect the performance of this operation.
"""
if self._result is None or self._fields is None:
raise OperationalError("Invalid use of fetchall")
buffer = [[] for i in range(len(self._fields))]
self._rowcount = 0
while True:
block, num_of_fields = CTaosInterface.fetchRow(
self._result, self._fields)
errno = CTaosInterface.libtaos.taos_errno(self._result)
if errno != 0:
raise ProgrammingError(
CTaosInterface.errStr(
self._result), errno)
if num_of_fields == 0:
break
self._rowcount += num_of_fields
for i in range(len(self._fields)):
buffer[i].extend(block[i])
return list(map(tuple, zip(*buffer)))
def fetchall(self):
if self._result is None or self._fields is None:
raise OperationalError("Invalid use of fetchall")
buffer = [[] for i in range(len(self._fields))]
self._rowcount = 0
while True:
block, num_of_fields = CTaosInterface.fetchBlock(
self._result, self._fields)
errno = CTaosInterface.libtaos.taos_errno(self._result)
if errno != 0:
raise ProgrammingError(
CTaosInterface.errStr(
self._result), errno)
if num_of_fields == 0:
break
self._rowcount += num_of_fields
for i in range(len(self._fields)):
buffer[i].extend(block[i])
return list(map(tuple, zip(*buffer)))
def nextset(self):
"""
"""
pass
def setinputsize(self, sizes):
pass
def setutputsize(self, size, column=None):
pass
def _reset_result(self):
"""Reset the result to unused version.
"""
self._description = []
self._rowcount = -1
if self._result is not None:
CTaosInterface.freeResult(self._result)
self._result = None
self._fields = None
self._block = None
self._block_rows = -1
self._block_iter = 0
self._affected_rows = 0
def _handle_result(self):
"""Handle the return result from query.
"""
self._description = []
for ele in self._fields:
self._description.append(
(ele['name'], ele['type'], None, None, None, None, False))
return self._result
src/connector/python/linux/python3/LICENSE 已删除 100644 → 0
浏览文件 @ 398397bc
Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
This program is free software: you can use, redistribute, and/or modify
it under the terms of the GNU Affero General Public License, version 3
or later ("AGPL"), as published by the Free Software Foundation.
This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
src/connector/python/linux/python3/README.md 已删除 100644 → 0
浏览文件 @ 398397bc
# TDengine python client interface
\ No newline at end of file
src/connector/python/linux/python3/taos/__init__.py 已删除 100644 → 0
浏览文件 @ 398397bc
from .connection import TDengineConnection
from .cursor import TDengineCursor
from .error import Error
# Globals
threadsafety = 0
paramstyle = 'pyformat'
__all__ = ['connection', 'cursor']
def connect(*args, **kwargs):
""" Function to return a TDengine connector object
Current supporting keyword parameters:
@dsn: Data source name as string
@user: Username as string(optional)
@password: Password as string(optional)
@host: Hostname(optional)
@database: Database name(optional)
@rtype: TDengineConnector
"""
return TDengineConnection(*args, **kwargs)
src/connector/python/linux/python3/taos/cinterface.py 已删除 100644 → 0
浏览文件 @ 398397bc
import ctypes
from .constants import FieldType
from .error import *
import math
import datetime
def _convert_millisecond_to_datetime(milli):
return datetime.datetime.fromtimestamp(milli / 1000.0)
def _convert_microsecond_to_datetime(micro):
return datetime.datetime.fromtimestamp(micro / 1000000.0)
def _crow_timestamp_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C bool row to python row
"""
_timestamp_converter = _convert_millisecond_to_datetime
if micro:
_timestamp_converter = _convert_microsecond_to_datetime
if num_of_rows > 0:
return [
None if ele == FieldType.C_BIGINT_NULL else _timestamp_converter(ele) for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_int64))[
:abs(num_of_rows)]]
else:
return [
None if ele == FieldType.C_BIGINT_NULL else _timestamp_converter(ele) for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_int64))[
:abs(num_of_rows)]]
def _crow_bool_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C bool row to python row
"""
if num_of_rows > 0:
return [
None if ele == FieldType.C_BOOL_NULL else bool(ele) for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_byte))[
:abs(num_of_rows)]]
else:
return [
None if ele == FieldType.C_BOOL_NULL else bool(ele) for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_bool))[
:abs(num_of_rows)]]
def _crow_tinyint_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C tinyint row to python row
"""
if num_of_rows > 0:
return [None if ele == FieldType.C_TINYINT_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(ctypes.c_byte))[:abs(num_of_rows)]]
else:
return [None if ele == FieldType.C_TINYINT_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(ctypes.c_byte))[:abs(num_of_rows)]]
def _crow_tinyint_unsigned_to_python(
data,
num_of_rows,
nbytes=None,
micro=False):
"""Function to convert C tinyint row to python row
"""
if num_of_rows > 0:
return [
None if ele == FieldType.C_TINYINT_UNSIGNED_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_ubyte))[
:abs(num_of_rows)]]
else:
return [
None if ele == FieldType.C_TINYINT_UNSIGNED_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_ubyte))[
:abs(num_of_rows)]]
def _crow_smallint_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C smallint row to python row
"""
if num_of_rows > 0:
return [
None if ele == FieldType.C_SMALLINT_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_short))[
:abs(num_of_rows)]]
else:
return [
None if ele == FieldType.C_SMALLINT_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_short))[
:abs(num_of_rows)]]
def _crow_smallint_unsigned_to_python(
data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C smallint row to python row
"""
if num_of_rows > 0:
return [
None if ele == FieldType.C_SMALLINT_UNSIGNED_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_ushort))[
:abs(num_of_rows)]]
else:
return [
None if ele == FieldType.C_SMALLINT_UNSIGNED_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_ushort))[
:abs(num_of_rows)]]
def _crow_int_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C int row to python row
"""
if num_of_rows > 0:
return [None if ele == FieldType.C_INT_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(ctypes.c_int))[:abs(num_of_rows)]]
else:
return [None if ele == FieldType.C_INT_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(ctypes.c_int))[:abs(num_of_rows)]]
def _crow_int_unsigned_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C int row to python row
"""
if num_of_rows > 0:
return [
None if ele == FieldType.C_INT_UNSIGNED_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_uint))[
:abs(num_of_rows)]]
else:
return [
None if ele == FieldType.C_INT_UNSIGNED_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_uint))[
:abs(num_of_rows)]]
def _crow_bigint_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C bigint row to python row
"""
if num_of_rows > 0:
return [None if ele == FieldType.C_BIGINT_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(ctypes.c_int64))[:abs(num_of_rows)]]
else:
return [None if ele == FieldType.C_BIGINT_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(ctypes.c_int64))[:abs(num_of_rows)]]
def _crow_bigint_unsigned_to_python(
data,
num_of_rows,
nbytes=None,
micro=False):
"""Function to convert C bigint row to python row
"""
if num_of_rows > 0:
return [
None if ele == FieldType.C_BIGINT_UNSIGNED_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_uint64))[
:abs(num_of_rows)]]
else:
return [
None if ele == FieldType.C_BIGINT_UNSIGNED_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_uint64))[
:abs(num_of_rows)]]
def _crow_float_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C float row to python row
"""
if num_of_rows > 0:
return [None if math.isnan(ele) else ele for ele in ctypes.cast(
data, ctypes.POINTER(ctypes.c_float))[:abs(num_of_rows)]]
else:
return [None if math.isnan(ele) else ele for ele in ctypes.cast(
data, ctypes.POINTER(ctypes.c_float))[:abs(num_of_rows)]]
def _crow_double_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C double row to python row
"""
if num_of_rows > 0:
return [None if math.isnan(ele) else ele for ele in ctypes.cast(
data, ctypes.POINTER(ctypes.c_double))[:abs(num_of_rows)]]
else:
return [None if math.isnan(ele) else ele for ele in ctypes.cast(
data, ctypes.POINTER(ctypes.c_double))[:abs(num_of_rows)]]
def _crow_binary_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C binary row to python row
"""
assert(nbytes is not None)
if num_of_rows > 0:
return [None if ele.value[0:1] == FieldType.C_BINARY_NULL else ele.value.decode(
'utf-8') for ele in (ctypes.cast(data, ctypes.POINTER(ctypes.c_char * nbytes)))[:abs(num_of_rows)]]
else:
return [None if ele.value[0:1] == FieldType.C_BINARY_NULL else ele.value.decode(
'utf-8') for ele in (ctypes.cast(data, ctypes.POINTER(ctypes.c_char * nbytes)))[:abs(num_of_rows)]]
def _crow_nchar_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C nchar row to python row
"""
assert(nbytes is not None)
res = []
for i in range(abs(num_of_rows)):
try:
if num_of_rows >= 0:
tmpstr = ctypes.c_char_p(data)
res.append(tmpstr.value.decode())
else:
res.append((ctypes.cast(data + nbytes * i,
ctypes.POINTER(ctypes.c_wchar * (nbytes // 4))))[0].value)
except ValueError:
res.append(None)
return res
def _crow_binary_to_python_block(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C binary row to python row
"""
assert(nbytes is not None)
res = []
if num_of_rows > 0:
for i in range(abs(num_of_rows)):
try:
rbyte = ctypes.cast(
data + nbytes * i,
ctypes.POINTER(
ctypes.c_short))[
:1].pop()
tmpstr = ctypes.c_char_p(data + nbytes * i + 2)
res.append(tmpstr.value.decode()[0:rbyte])
except ValueError:
res.append(None)
else:
for i in range(abs(num_of_rows)):
try:
rbyte = ctypes.cast(
data + nbytes * i,
ctypes.POINTER(
ctypes.c_short))[
:1].pop()
tmpstr = ctypes.c_char_p(data + nbytes * i + 2)
res.append(tmpstr.value.decode()[0:rbyte])
except ValueError:
res.append(None)
return res
def _crow_nchar_to_python_block(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C nchar row to python row
"""
assert(nbytes is not None)
res = []
if num_of_rows >= 0:
for i in range(abs(num_of_rows)):
try:
tmpstr = ctypes.c_char_p(data + nbytes * i + 2)
res.append(tmpstr.value.decode())
except ValueError:
res.append(None)
else:
for i in range(abs(num_of_rows)):
try:
res.append((ctypes.cast(data + nbytes * i + 2,
ctypes.POINTER(ctypes.c_wchar * (nbytes // 4))))[0].value)
except ValueError:
res.append(None)
return res
_CONVERT_FUNC = {
FieldType.C_BOOL: _crow_bool_to_python,
FieldType.C_TINYINT: _crow_tinyint_to_python,
FieldType.C_SMALLINT: _crow_smallint_to_python,
FieldType.C_INT: _crow_int_to_python,
FieldType.C_BIGINT: _crow_bigint_to_python,
FieldType.C_FLOAT: _crow_float_to_python,
FieldType.C_DOUBLE: _crow_double_to_python,
FieldType.C_BINARY: _crow_binary_to_python,
FieldType.C_TIMESTAMP: _crow_timestamp_to_python,
FieldType.C_NCHAR: _crow_nchar_to_python,
FieldType.C_TINYINT_UNSIGNED: _crow_tinyint_unsigned_to_python,
FieldType.C_SMALLINT_UNSIGNED: _crow_smallint_unsigned_to_python,
FieldType.C_INT_UNSIGNED: _crow_int_unsigned_to_python,
FieldType.C_BIGINT_UNSIGNED: _crow_bigint_unsigned_to_python
}
_CONVERT_FUNC_BLOCK = {
FieldType.C_BOOL: _crow_bool_to_python,
FieldType.C_TINYINT: _crow_tinyint_to_python,
FieldType.C_SMALLINT: _crow_smallint_to_python,
FieldType.C_INT: _crow_int_to_python,
FieldType.C_BIGINT: _crow_bigint_to_python,
FieldType.C_FLOAT: _crow_float_to_python,
FieldType.C_DOUBLE: _crow_double_to_python,
FieldType.C_BINARY: _crow_binary_to_python_block,
FieldType.C_TIMESTAMP: _crow_timestamp_to_python,
FieldType.C_NCHAR: _crow_nchar_to_python_block,
FieldType.C_TINYINT_UNSIGNED: _crow_tinyint_unsigned_to_python,
FieldType.C_SMALLINT_UNSIGNED: _crow_smallint_unsigned_to_python,
FieldType.C_INT_UNSIGNED: _crow_int_unsigned_to_python,
FieldType.C_BIGINT_UNSIGNED: _crow_bigint_unsigned_to_python
}
# Corresponding TAOS_FIELD structure in C
class TaosField(ctypes.Structure):
_fields_ = [('name', ctypes.c_char * 65),
('type', ctypes.c_char),
('bytes', ctypes.c_short)]
# C interface class
class CTaosInterface(object):
libtaos = ctypes.CDLL('libtaos.so')
libtaos.taos_fetch_fields.restype = ctypes.POINTER(TaosField)
libtaos.taos_init.restype = None
libtaos.taos_connect.restype = ctypes.c_void_p
#libtaos.taos_use_result.restype = ctypes.c_void_p
libtaos.taos_fetch_row.restype = ctypes.POINTER(ctypes.c_void_p)
libtaos.taos_errstr.restype = ctypes.c_char_p
libtaos.taos_subscribe.restype = ctypes.c_void_p
libtaos.taos_consume.restype = ctypes.c_void_p
libtaos.taos_fetch_lengths.restype = ctypes.c_void_p
libtaos.taos_free_result.restype = None
libtaos.taos_errno.restype = ctypes.c_int
libtaos.taos_query.restype = ctypes.POINTER(ctypes.c_void_p)
def __init__(self, config=None):
'''
Function to initialize the class
@host : str, hostname to connect
@user : str, username to connect to server
@password : str, password to connect to server
@db : str, default db to use when log in
@config : str, config directory
@rtype : None
'''
if config is None:
self._config = ctypes.c_char_p(None)
else:
try:
self._config = ctypes.c_char_p(config.encode('utf-8'))
except AttributeError:
raise AttributeError("config is expected as a str")
if config is not None:
CTaosInterface.libtaos.taos_options(3, self._config)
CTaosInterface.libtaos.taos_init()
@property
def config(self):
""" Get current config
"""
return self._config
def connect(
self,
host=None,
user="root",
password="taosdata",
db=None,
port=0):
'''
Function to connect to server
@rtype: c_void_p, TDengine handle
'''
# host
try:
_host = ctypes.c_char_p(host.encode(
"utf-8")) if host is not None else ctypes.c_char_p(None)
except AttributeError:
raise AttributeError("host is expected as a str")
# user
try:
_user = ctypes.c_char_p(user.encode("utf-8"))
except AttributeError:
raise AttributeError("user is expected as a str")
# password
try:
_password = ctypes.c_char_p(password.encode("utf-8"))
except AttributeError:
raise AttributeError("password is expected as a str")
# db
try:
_db = ctypes.c_char_p(
db.encode("utf-8")) if db is not None else ctypes.c_char_p(None)
except AttributeError:
raise AttributeError("db is expected as a str")
# port
try:
_port = ctypes.c_int(port)
except TypeError:
raise TypeError("port is expected as an int")
connection = ctypes.c_void_p(CTaosInterface.libtaos.taos_connect(
_host, _user, _password, _db, _port))
if connection.value is None:
print('connect to TDengine failed')
raise ConnectionError("connect to TDengine failed")
# sys.exit(1)
# else:
# print('connect to TDengine success')
return connection
@staticmethod
def close(connection):
'''Close the TDengine handle
'''
CTaosInterface.libtaos.taos_close(connection)
#print('connection is closed')
@staticmethod
def query(connection, sql):
'''Run SQL
@sql: str, sql string to run
@rtype: 0 on success and -1 on failure
'''
try:
return CTaosInterface.libtaos.taos_query(
connection, ctypes.c_char_p(sql.encode('utf-8')))
except AttributeError:
raise AttributeError("sql is expected as a string")
# finally:
# CTaosInterface.libtaos.close(connection)
@staticmethod
def affectedRows(result):
"""The affected rows after runing query
"""
return CTaosInterface.libtaos.taos_affected_rows(result)
@staticmethod
def subscribe(connection, restart, topic, sql, interval):
"""Create a subscription
@restart boolean,
@sql string, sql statement for data query, must be a 'select' statement.
@topic string, name of this subscription
"""
return ctypes.c_void_p(CTaosInterface.libtaos.taos_subscribe(
connection,
1 if restart else 0,
ctypes.c_char_p(topic.encode('utf-8')),
ctypes.c_char_p(sql.encode('utf-8')),
None,
None,
interval))
@staticmethod
def consume(sub):
"""Consume data of a subscription
"""
result = ctypes.c_void_p(CTaosInterface.libtaos.taos_consume(sub))
fields = []
pfields = CTaosInterface.fetchFields(result)
for i in range(CTaosInterface.libtaos.taos_num_fields(result)):
fields.append({'name': pfields[i].name.decode('utf-8'),
'bytes': pfields[i].bytes,
'type': ord(pfields[i].type)})
return result, fields
@staticmethod
def unsubscribe(sub, keepProgress):
"""Cancel a subscription
"""
CTaosInterface.libtaos.taos_unsubscribe(sub, 1 if keepProgress else 0)
@staticmethod
def useResult(result):
'''Use result after calling self.query
'''
fields = []
pfields = CTaosInterface.fetchFields(result)
for i in range(CTaosInterface.fieldsCount(result)):
fields.append({'name': pfields[i].name.decode('utf-8'),
'bytes': pfields[i].bytes,
'type': ord(pfields[i].type)})
return fields
@staticmethod
def fetchBlock(result, fields):
pblock = ctypes.c_void_p(0)
num_of_rows = CTaosInterface.libtaos.taos_fetch_block(
result, ctypes.byref(pblock))
if num_of_rows == 0:
return None, 0
isMicro = (CTaosInterface.libtaos.taos_result_precision(
result) == FieldType.C_TIMESTAMP_MICRO)
blocks = [None] * len(fields)
fieldL = CTaosInterface.libtaos.taos_fetch_lengths(result)
fieldLen = [
ele for ele in ctypes.cast(
fieldL, ctypes.POINTER(
ctypes.c_int))[
:len(fields)]]
for i in range(len(fields)):
data = ctypes.cast(pblock, ctypes.POINTER(ctypes.c_void_p))[i]
if fields[i]['type'] not in _CONVERT_FUNC_BLOCK:
raise DatabaseError("Invalid data type returned from database")
blocks[i] = _CONVERT_FUNC_BLOCK[fields[i]['type']](
data, num_of_rows, fieldLen[i], isMicro)
return blocks, abs(num_of_rows)
@staticmethod
def fetchRow(result, fields):
pblock = ctypes.c_void_p(0)
pblock = CTaosInterface.libtaos.taos_fetch_row(result)
if pblock:
num_of_rows = 1
isMicro = (CTaosInterface.libtaos.taos_result_precision(
result) == FieldType.C_TIMESTAMP_MICRO)
blocks = [None] * len(fields)
fieldL = CTaosInterface.libtaos.taos_fetch_lengths(result)
fieldLen = [
ele for ele in ctypes.cast(
fieldL, ctypes.POINTER(
ctypes.c_int))[
:len(fields)]]
for i in range(len(fields)):
data = ctypes.cast(pblock, ctypes.POINTER(ctypes.c_void_p))[i]
if fields[i]['type'] not in _CONVERT_FUNC:
raise DatabaseError(
"Invalid data type returned from database")
if data is None:
blocks[i] = [None]
else:
blocks[i] = _CONVERT_FUNC[fields[i]['type']](
data, num_of_rows, fieldLen[i], isMicro)
else:
return None, 0
return blocks, abs(num_of_rows)
@staticmethod
def freeResult(result):
CTaosInterface.libtaos.taos_free_result(result)
result.value = None
@staticmethod
def fieldsCount(result):
return CTaosInterface.libtaos.taos_field_count(result)
@staticmethod
def fetchFields(result):
return CTaosInterface.libtaos.taos_fetch_fields(result)
# @staticmethod
# def fetchRow(result, fields):
# l = []
# row = CTaosInterface.libtaos.taos_fetch_row(result)
# if not row:
# return None
# for i in range(len(fields)):
# l.append(CTaosInterface.getDataValue(
# row[i], fields[i]['type'], fields[i]['bytes']))
# return tuple(l)
# @staticmethod
# def getDataValue(data, dtype, byte):
# '''
# '''
# if not data:
# return None
# if (dtype == CTaosInterface.TSDB_DATA_TYPE_BOOL):
# return ctypes.cast(data, ctypes.POINTER(ctypes.c_bool))[0]
# elif (dtype == CTaosInterface.TSDB_DATA_TYPE_TINYINT):
# return ctypes.cast(data, ctypes.POINTER(ctypes.c_byte))[0]
# elif (dtype == CTaosInterface.TSDB_DATA_TYPE_SMALLINT):
# return ctypes.cast(data, ctypes.POINTER(ctypes.c_short))[0]
# elif (dtype == CTaosInterface.TSDB_DATA_TYPE_INT):
# return ctypes.cast(data, ctypes.POINTER(ctypes.c_int))[0]
# elif (dtype == CTaosInterface.TSDB_DATA_TYPE_BIGINT):
# return ctypes.cast(data, ctypes.POINTER(ctypes.c_int64))[0]
# elif (dtype == CTaosInterface.TSDB_DATA_TYPE_FLOAT):
# return ctypes.cast(data, ctypes.POINTER(ctypes.c_float))[0]
# elif (dtype == CTaosInterface.TSDB_DATA_TYPE_DOUBLE):
# return ctypes.cast(data, ctypes.POINTER(ctypes.c_double))[0]
# elif (dtype == CTaosInterface.TSDB_DATA_TYPE_BINARY):
# return (ctypes.cast(data, ctypes.POINTER(ctypes.c_char))[0:byte]).rstrip('\x00')
# elif (dtype == CTaosInterface.TSDB_DATA_TYPE_TIMESTAMP):
# return ctypes.cast(data, ctypes.POINTER(ctypes.c_int64))[0]
# elif (dtype == CTaosInterface.TSDB_DATA_TYPE_NCHAR):
# return (ctypes.cast(data, ctypes.c_char_p).value).rstrip('\x00')
@staticmethod
def errno(result):
"""Return the error number.
"""
return CTaosInterface.libtaos.taos_errno(result)
@staticmethod
def errStr(result):
"""Return the error styring
"""
return CTaosInterface.libtaos.taos_errstr(result).decode('utf-8')
if __name__ == '__main__':
cinter = CTaosInterface()
conn = cinter.connect()
result = cinter.query(conn, 'show databases')
print('Query Affected rows: {}'.format(cinter.affectedRows(result)))
fields = CTaosInterface.useResult(result)
data, num_of_rows = CTaosInterface.fetchBlock(result, fields)
print(data)
cinter.freeResult(result)
cinter.close(conn)
src/connector/python/linux/python3/taos/connection.py 已删除 100644 → 0
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from .cursor import TDengineCursor
from .subscription import TDengineSubscription
from .cinterface import CTaosInterface
class TDengineConnection(object):
""" TDengine connection object
"""
def __init__(self, *args, **kwargs):
self._conn = None
self._host = None
self._user = "root"
self._password = "taosdata"
self._database = None
self._port = 0
self._config = None
self._chandle = None
self.config(**kwargs)
def config(self, **kwargs):
# host
if 'host' in kwargs:
self._host = kwargs['host']
# user
if 'user' in kwargs:
self._user = kwargs['user']
# password
if 'password' in kwargs:
self._password = kwargs['password']
# database
if 'database' in kwargs:
self._database = kwargs['database']
# port
if 'port' in kwargs:
self._port = kwargs['port']
# config
if 'config' in kwargs:
self._config = kwargs['config']
self._chandle = CTaosInterface(self._config)
self._conn = self._chandle.connect(
self._host,
self._user,
self._password,
self._database,
self._port)
def close(self):
"""Close current connection.
"""
return CTaosInterface.close(self._conn)
def subscribe(self, restart, topic, sql, interval):
"""Create a subscription.
"""
if self._conn is None:
return None
sub = CTaosInterface.subscribe(
self._conn, restart, topic, sql, interval)
return TDengineSubscription(sub)
def cursor(self):
"""Return a new Cursor object using the connection.
"""
return TDengineCursor(self)
def commit(self):
"""Commit any pending transaction to the database.
Since TDengine do not support transactions, the implement is void functionality.
"""
pass
def rollback(self):
"""Void functionality
"""
pass
def clear_result_set(self):
"""Clear unused result set on this connection.
"""
pass
if __name__ == "__main__":
conn = TDengineConnection(host='192.168.1.107')
conn.close()
print("Hello world")
src/connector/python/linux/python3/taos/constants.py 已删除 100644 → 0
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"""Constants in TDengine python
"""
from .dbapi import *
class FieldType(object):
"""TDengine Field Types
"""
# type_code
C_NULL = 0
C_BOOL = 1
C_TINYINT = 2
C_SMALLINT = 3
C_INT = 4
C_BIGINT = 5
C_FLOAT = 6
C_DOUBLE = 7
C_BINARY = 8
C_TIMESTAMP = 9
C_NCHAR = 10
C_TINYINT_UNSIGNED = 11
C_SMALLINT_UNSIGNED = 12
C_INT_UNSIGNED = 13
C_BIGINT_UNSIGNED = 14
# NULL value definition
# NOTE: These values should change according to C definition in tsdb.h
C_BOOL_NULL = 0x02
C_TINYINT_NULL = -128
C_TINYINT_UNSIGNED_NULL = 255
C_SMALLINT_NULL = -32768
C_SMALLINT_UNSIGNED_NULL = 65535
C_INT_NULL = -2147483648
C_INT_UNSIGNED_NULL = 4294967295
C_BIGINT_NULL = -9223372036854775808
C_BIGINT_UNSIGNED_NULL = 18446744073709551615
C_FLOAT_NULL = float('nan')
C_DOUBLE_NULL = float('nan')
C_BINARY_NULL = bytearray([int('0xff', 16)])
# Timestamp precision definition
C_TIMESTAMP_MILLI = 0
C_TIMESTAMP_MICRO = 1
src/connector/python/linux/python3/taos/cursor.py 已删除 100644 → 0
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from .cinterface import CTaosInterface
from .error import *
from .constants import FieldType
# querySeqNum = 0
class TDengineCursor(object):
"""Database cursor which is used to manage the context of a fetch operation.
Attributes:
.description: Read-only attribute consists of 7-item sequences:
> name (mondatory)
> type_code (mondatory)
> display_size
> internal_size
> precision
> scale
> null_ok
This attribute will be None for operations that do not return rows or
if the cursor has not had an operation invoked via the .execute*() method yet.
.rowcount:This read-only attribute specifies the number of rows that the last
.execute*() produced (for DQL statements like SELECT) or affected
"""
def __init__(self, connection=None):
self._description = []
self._rowcount = -1
self._connection = None
self._result = None
self._fields = None
self._block = None
self._block_rows = -1
self._block_iter = 0
self._affected_rows = 0
self._logfile = ""
if connection is not None:
self._connection = connection
def __iter__(self):
return self
def __next__(self):
if self._result is None or self._fields is None:
raise OperationalError("Invalid use of fetch iterator")
if self._block_rows <= self._block_iter:
block, self._block_rows = CTaosInterface.fetchRow(
self._result, self._fields)
if self._block_rows == 0:
raise StopIteration
self._block = list(map(tuple, zip(*block)))
self._block_iter = 0
data = self._block[self._block_iter]
self._block_iter += 1
return data
@property
def description(self):
"""Return the description of the object.
"""
return self._description
@property
def rowcount(self):
"""Return the rowcount of the object
"""
return self._rowcount
@property
def affected_rows(self):
"""Return the rowcount of insertion
"""
return self._affected_rows
def callproc(self, procname, *args):
"""Call a stored database procedure with the given name.
Void functionality since no stored procedures.
"""
pass
def log(self, logfile):
self._logfile = logfile
def close(self):
"""Close the cursor.
"""
if self._connection is None:
return False
self._reset_result()
self._connection = None
return True
def execute(self, operation, params=None):
"""Prepare and execute a database operation (query or command).
"""
if not operation:
return None
if not self._connection:
# TODO : change the exception raised here
raise ProgrammingError("Cursor is not connected")
self._reset_result()
stmt = operation
if params is not None:
pass
# global querySeqNum
# querySeqNum += 1
# localSeqNum = querySeqNum # avoid raice condition
# print(" >> Exec Query ({}): {}".format(localSeqNum, str(stmt)))
self._result = CTaosInterface.query(self._connection._conn, stmt)
# print(" << Query ({}) Exec Done".format(localSeqNum))
if (self._logfile):
with open(self._logfile, "a") as logfile:
logfile.write("%s;\n" % operation)
errno = CTaosInterface.libtaos.taos_errno(self._result)
if errno == 0:
if CTaosInterface.fieldsCount(self._result) == 0:
self._affected_rows += CTaosInterface.affectedRows(
self._result)
return CTaosInterface.affectedRows(self._result)
else:
self._fields = CTaosInterface.useResult(
self._result)
return self._handle_result()
else:
raise ProgrammingError(
CTaosInterface.errStr(
self._result), errno)
def executemany(self, operation, seq_of_parameters):
"""Prepare a database operation (query or command) and then execute it against all parameter sequences or mappings found in the sequence seq_of_parameters.
"""
pass
def fetchone(self):
"""Fetch the next row of a query result set, returning a single sequence, or None when no more data is available.
"""
pass
def fetchmany(self):
pass
def istype(self, col, dataType):
if (dataType.upper() == "BOOL"):
if (self._description[col][1] == FieldType.C_BOOL):
return True
if (dataType.upper() == "TINYINT"):
if (self._description[col][1] == FieldType.C_TINYINT):
return True
if (dataType.upper() == "TINYINT UNSIGNED"):
if (self._description[col][1] == FieldType.C_TINYINT_UNSIGNED):
return True
if (dataType.upper() == "SMALLINT"):
if (self._description[col][1] == FieldType.C_SMALLINT):
return True
if (dataType.upper() == "SMALLINT UNSIGNED"):
if (self._description[col][1] == FieldType.C_SMALLINT_UNSIGNED):
return True
if (dataType.upper() == "INT"):
if (self._description[col][1] == FieldType.C_INT):
return True
if (dataType.upper() == "INT UNSIGNED"):
if (self._description[col][1] == FieldType.C_INT_UNSIGNED):
return True
if (dataType.upper() == "BIGINT"):
if (self._description[col][1] == FieldType.C_BIGINT):
return True
if (dataType.upper() == "BIGINT UNSIGNED"):
if (self._description[col][1] == FieldType.C_BIGINT_UNSIGNED):
return True
if (dataType.upper() == "FLOAT"):
if (self._description[col][1] == FieldType.C_FLOAT):
return True
if (dataType.upper() == "DOUBLE"):
if (self._description[col][1] == FieldType.C_DOUBLE):
return True
if (dataType.upper() == "BINARY"):
if (self._description[col][1] == FieldType.C_BINARY):
return True
if (dataType.upper() == "TIMESTAMP"):
if (self._description[col][1] == FieldType.C_TIMESTAMP):
return True
if (dataType.upper() == "NCHAR"):
if (self._description[col][1] == FieldType.C_NCHAR):
return True
return False
def fetchall_row(self):
"""Fetch all (remaining) rows of a query result, returning them as a sequence of sequences (e.g. a list of tuples). Note that the cursor's arraysize attribute can affect the performance of this operation.
"""
if self._result is None or self._fields is None:
raise OperationalError("Invalid use of fetchall")
buffer = [[] for i in range(len(self._fields))]
self._rowcount = 0
while True:
block, num_of_fields = CTaosInterface.fetchRow(
self._result, self._fields)
errno = CTaosInterface.libtaos.taos_errno(self._result)
if errno != 0:
raise ProgrammingError(
CTaosInterface.errStr(
self._result), errno)
if num_of_fields == 0:
break
self._rowcount += num_of_fields
for i in range(len(self._fields)):
buffer[i].extend(block[i])
return list(map(tuple, zip(*buffer)))
def fetchall(self):
if self._result is None or self._fields is None:
raise OperationalError("Invalid use of fetchall")
buffer = [[] for i in range(len(self._fields))]
self._rowcount = 0
while True:
block, num_of_fields = CTaosInterface.fetchBlock(
self._result, self._fields)
errno = CTaosInterface.libtaos.taos_errno(self._result)
if errno != 0:
raise ProgrammingError(
CTaosInterface.errStr(
self._result), errno)
if num_of_fields == 0:
break
self._rowcount += num_of_fields
for i in range(len(self._fields)):
buffer[i].extend(block[i])
return list(map(tuple, zip(*buffer)))
def nextset(self):
"""
"""
pass
def setinputsize(self, sizes):
pass
def setutputsize(self, size, column=None):
pass
def _reset_result(self):
"""Reset the result to unused version.
"""
self._description = []
self._rowcount = -1
if self._result is not None:
CTaosInterface.freeResult(self._result)
self._result = None
self._fields = None
self._block = None
self._block_rows = -1
self._block_iter = 0
self._affected_rows = 0
def _handle_result(self):
"""Handle the return result from query.
"""
self._description = []
for ele in self._fields:
self._description.append(
(ele['name'], ele['type'], None, None, None, None, False))
return self._result
src/connector/python/linux/python3/taos/dbapi.py 已删除 100644 → 0
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"""Type Objects and Constructors.
"""
import time
import datetime
class DBAPITypeObject(object):
def __init__(self, *values):
self.values = values
def __com__(self, other):
if other in self.values:
return 0
if other < self.values:
return 1
else:
return -1
Date = datetime.date
Time = datetime.time
Timestamp = datetime.datetime
def DataFromTicks(ticks):
return Date(*time.localtime(ticks)[:3])
def TimeFromTicks(ticks):
return Time(*time.localtime(ticks)[3:6])
def TimestampFromTicks(ticks):
return Timestamp(*time.localtime(ticks)[:6])
Binary = bytes
# STRING = DBAPITypeObject(*constants.FieldType.get_string_types())
# BINARY = DBAPITypeObject(*constants.FieldType.get_binary_types())
# NUMBER = BAPITypeObject(*constants.FieldType.get_number_types())
# DATETIME = DBAPITypeObject(*constants.FieldType.get_timestamp_types())
# ROWID = DBAPITypeObject()
src/connector/python/linux/python3/taos/error.py 已删除 100644 → 0
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"""Python exceptions
"""
class Error(Exception):
def __init__(self, msg=None, errno=None):
self.msg = msg
self._full_msg = self.msg
self.errno = errno
def __str__(self):
return self._full_msg
class Warning(Exception):
"""Exception raised for important warnings like data truncations while inserting.
"""
pass
class InterfaceError(Error):
"""Exception raised for errors that are related to the database interface rather than the database itself.
"""
pass
class DatabaseError(Error):
"""Exception raised for errors that are related to the database.
"""
pass
class DataError(DatabaseError):
"""Exception raised for errors that are due to problems with the processed data like division by zero, numeric value out of range.
"""
pass
class OperationalError(DatabaseError):
"""Exception raised for errors that are related to the database's operation and not necessarily under the control of the programmer
"""
pass
class IntegrityError(DatabaseError):
"""Exception raised when the relational integrity of the database is affected.
"""
pass
class InternalError(DatabaseError):
"""Exception raised when the database encounters an internal error.
"""
pass
class ProgrammingError(DatabaseError):
"""Exception raised for programming errors.
"""
pass
class NotSupportedError(DatabaseError):
"""Exception raised in case a method or database API was used which is not supported by the database,.
"""
pass
src/connector/python/linux/python3/taos/subscription.py 已删除 100644 → 0
浏览文件 @ 398397bc
from .cinterface import CTaosInterface
from .error import *
class TDengineSubscription(object):
"""TDengine subscription object
"""
def __init__(self, sub):
self._sub = sub
def consume(self):
"""Consume rows of a subscription
"""
if self._sub is None:
raise OperationalError("Invalid use of consume")
result, fields = CTaosInterface.consume(self._sub)
buffer = [[] for i in range(len(fields))]
while True:
block, num_of_fields = CTaosInterface.fetchBlock(result, fields)
if num_of_fields == 0:
break
for i in range(len(fields)):
buffer[i].extend(block[i])
self.fields = fields
return list(map(tuple, zip(*buffer)))
def close(self, keepProgress=True):
"""Close the Subscription.
"""
if self._sub is None:
return False
CTaosInterface.unsubscribe(self._sub, keepProgress)
return True
if __name__ == '__main__':
from .connection import TDengineConnection
conn = TDengineConnection(
host="127.0.0.1",
user="root",
password="taosdata",
database="test")
# Generate a cursor object to run SQL commands
sub = conn.subscribe(True, "test", "select * from meters;", 1000)
for i in range(0, 10):
data = sub.consume()
for d in data:
print(d)
sub.close()
conn.close()
src/connector/python/osx/python3/LICENSE 已删除 100644 → 0
浏览文件 @ 398397bc
Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
This program is free software: you can use, redistribute, and/or modify
it under the terms of the GNU Affero General Public License, version 3
or later ("AGPL"), as published by the Free Software Foundation.
This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
src/connector/python/osx/python3/README.md 已删除 100644 → 0
浏览文件 @ 398397bc
# TDengine python client interface
\ No newline at end of file
src/connector/python/osx/python3/setup.py 已删除 100644 → 0
浏览文件 @ 398397bc
import setuptools
with open("README.md", "r") as fh:
long_description = fh.read()
setuptools.setup(
name="taos",
version="2.0.9",
author="Taosdata Inc.",
author_email="support@taosdata.com",
description="TDengine python client package",
long_description=long_description,
long_description_content_type="text/markdown",
url="https://github.com/pypa/sampleproject",
packages=setuptools.find_packages(),
classifiers=[
"Programming Language :: Python :: 3",
"Operating System :: MacOS X",
],
)
src/connector/python/osx/python3/taos/__init__.py 已删除 100644 → 0
浏览文件 @ 398397bc
from .connection import TDengineConnection
from .cursor import TDengineCursor
# Globals
threadsafety = 0
paramstyle = 'pyformat'
__all__ = ['connection', 'cursor']
def connect(*args, **kwargs):
""" Function to return a TDengine connector object
Current supporting keyword parameters:
@dsn: Data source name as string
@user: Username as string(optional)
@password: Password as string(optional)
@host: Hostname(optional)
@database: Database name(optional)
@rtype: TDengineConnector
"""
return TDengineConnection(*args, **kwargs)
src/connector/python/osx/python3/taos/cinterface.py 已删除 100644 → 0
浏览文件 @ 398397bc
import ctypes
from .constants import FieldType
from .error import *
import math
import datetime
def _convert_millisecond_to_datetime(milli):
return datetime.datetime.fromtimestamp(milli / 1000.0)
def _convert_microsecond_to_datetime(micro):
return datetime.datetime.fromtimestamp(micro / 1000000.0)
def _crow_timestamp_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C bool row to python row
"""
_timestamp_converter = _convert_millisecond_to_datetime
if micro:
_timestamp_converter = _convert_microsecond_to_datetime
if num_of_rows > 0:
return [
None if ele == FieldType.C_BIGINT_NULL else _timestamp_converter(ele) for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_int64))[
:abs(num_of_rows)]]
else:
return [
None if ele == FieldType.C_BIGINT_NULL else _timestamp_converter(ele) for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_int64))[
:abs(num_of_rows)]]
def _crow_bool_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C bool row to python row
"""
if num_of_rows > 0:
return [
None if ele == FieldType.C_BOOL_NULL else bool(ele) for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_byte))[
:abs(num_of_rows)]]
else:
return [
None if ele == FieldType.C_BOOL_NULL else bool(ele) for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_bool))[
:abs(num_of_rows)]]
def _crow_tinyint_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C tinyint row to python row
"""
if num_of_rows > 0:
return [None if ele == FieldType.C_TINYINT_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(ctypes.c_byte))[:abs(num_of_rows)]]
else:
return [None if ele == FieldType.C_TINYINT_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(ctypes.c_byte))[:abs(num_of_rows)]]
def _crow_tinyint_unsigned_to_python(
data,
num_of_rows,
nbytes=None,
micro=False):
"""Function to convert C tinyint row to python row
"""
if num_of_rows > 0:
return [
None if ele == FieldType.C_TINYINT_UNSIGNED_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_ubyte))[
:abs(num_of_rows)]]
else:
return [
None if ele == FieldType.C_TINYINT_UNSIGNED_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_ubyte))[
:abs(num_of_rows)]]
def _crow_smallint_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C smallint row to python row
"""
if num_of_rows > 0:
return [
None if ele == FieldType.C_SMALLINT_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_short))[
:abs(num_of_rows)]]
else:
return [
None if ele == FieldType.C_SMALLINT_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_short))[
:abs(num_of_rows)]]
def _crow_smallint_unsigned_to_python(
data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C smallint row to python row
"""
if num_of_rows > 0:
return [
None if ele == FieldType.C_SMALLINT_UNSIGNED_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_ushort))[
:abs(num_of_rows)]]
else:
return [
None if ele == FieldType.C_SMALLINT_UNSIGNED_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_ushort))[
:abs(num_of_rows)]]
def _crow_int_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C int row to python row
"""
if num_of_rows > 0:
return [None if ele == FieldType.C_INT_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(ctypes.c_int))[:abs(num_of_rows)]]
else:
return [None if ele == FieldType.C_INT_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(ctypes.c_int))[:abs(num_of_rows)]]
def _crow_int_unsigned_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C int row to python row
"""
if num_of_rows > 0:
return [
None if ele == FieldType.C_INT_UNSIGNED_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_uint))[
:abs(num_of_rows)]]
else:
return [
None if ele == FieldType.C_INT_UNSIGNED_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_uint))[
:abs(num_of_rows)]]
def _crow_bigint_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C bigint row to python row
"""
if num_of_rows > 0:
return [None if ele == FieldType.C_BIGINT_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(ctypes.c_int64))[:abs(num_of_rows)]]
else:
return [None if ele == FieldType.C_BIGINT_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(ctypes.c_int64))[:abs(num_of_rows)]]
def _crow_bigint_unsigned_to_python(
data,
num_of_rows,
nbytes=None,
micro=False):
"""Function to convert C bigint row to python row
"""
if num_of_rows > 0:
return [
None if ele == FieldType.C_BIGINT_UNSIGNED_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_uint64))[
:abs(num_of_rows)]]
else:
return [
None if ele == FieldType.C_BIGINT_UNSIGNED_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_uint64))[
:abs(num_of_rows)]]
def _crow_float_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C float row to python row
"""
if num_of_rows > 0:
return [None if math.isnan(ele) else ele for ele in ctypes.cast(
data, ctypes.POINTER(ctypes.c_float))[:abs(num_of_rows)]]
else:
return [None if math.isnan(ele) else ele for ele in ctypes.cast(
data, ctypes.POINTER(ctypes.c_float))[:abs(num_of_rows)]]
def _crow_double_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C double row to python row
"""
if num_of_rows > 0:
return [None if math.isnan(ele) else ele for ele in ctypes.cast(
data, ctypes.POINTER(ctypes.c_double))[:abs(num_of_rows)]]
else:
return [None if math.isnan(ele) else ele for ele in ctypes.cast(
data, ctypes.POINTER(ctypes.c_double))[:abs(num_of_rows)]]
def _crow_binary_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C binary row to python row
"""
assert(nbytes is not None)
if num_of_rows > 0:
return [None if ele.value[0:1] == FieldType.C_BINARY_NULL else ele.value.decode(
'utf-8') for ele in (ctypes.cast(data, ctypes.POINTER(ctypes.c_char * nbytes)))[:abs(num_of_rows)]]
else:
return [None if ele.value[0:1] == FieldType.C_BINARY_NULL else ele.value.decode(
'utf-8') for ele in (ctypes.cast(data, ctypes.POINTER(ctypes.c_char * nbytes)))[:abs(num_of_rows)]]
def _crow_nchar_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C nchar row to python row
"""
assert(nbytes is not None)
res = []
for i in range(abs(num_of_rows)):
try:
if num_of_rows >= 0:
tmpstr = ctypes.c_char_p(data)
res.append(tmpstr.value.decode())
else:
res.append((ctypes.cast(data + nbytes * i,
ctypes.POINTER(ctypes.c_wchar * (nbytes // 4))))[0].value)
except ValueError:
res.append(None)
return res
def _crow_binary_to_python_block(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C binary row to python row
"""
assert(nbytes is not None)
res = []
if num_of_rows > 0:
for i in range(abs(num_of_rows)):
try:
rbyte = ctypes.cast(
data + nbytes * i,
ctypes.POINTER(
ctypes.c_short))[
:1].pop()
tmpstr = ctypes.c_char_p(data + nbytes * i + 2)
res.append(tmpstr.value.decode()[0:rbyte])
except ValueError:
res.append(None)
else:
for i in range(abs(num_of_rows)):
try:
rbyte = ctypes.cast(
data + nbytes * i,
ctypes.POINTER(
ctypes.c_short))[
:1].pop()
tmpstr = ctypes.c_char_p(data + nbytes * i + 2)
res.append(tmpstr.value.decode()[0:rbyte])
except ValueError:
res.append(None)
return res
def _crow_nchar_to_python_block(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C nchar row to python row
"""
assert(nbytes is not None)
res = []
if num_of_rows >= 0:
for i in range(abs(num_of_rows)):
try:
tmpstr = ctypes.c_char_p(data + nbytes * i + 2)
res.append(tmpstr.value.decode())
except ValueError:
res.append(None)
else:
for i in range(abs(num_of_rows)):
try:
res.append((ctypes.cast(data + nbytes * i + 2,
ctypes.POINTER(ctypes.c_wchar * (nbytes // 4))))[0].value)
except ValueError:
res.append(None)
return res
_CONVERT_FUNC = {
FieldType.C_BOOL: _crow_bool_to_python,
FieldType.C_TINYINT: _crow_tinyint_to_python,
FieldType.C_SMALLINT: _crow_smallint_to_python,
FieldType.C_INT: _crow_int_to_python,
FieldType.C_BIGINT: _crow_bigint_to_python,
FieldType.C_FLOAT: _crow_float_to_python,
FieldType.C_DOUBLE: _crow_double_to_python,
FieldType.C_BINARY: _crow_binary_to_python,
FieldType.C_TIMESTAMP: _crow_timestamp_to_python,
FieldType.C_NCHAR: _crow_nchar_to_python,
FieldType.C_TINYINT_UNSIGNED: _crow_tinyint_unsigned_to_python,
FieldType.C_SMALLINT_UNSIGNED: _crow_smallint_unsigned_to_python,
FieldType.C_INT_UNSIGNED: _crow_int_unsigned_to_python,
FieldType.C_BIGINT_UNSIGNED: _crow_bigint_unsigned_to_python
}
_CONVERT_FUNC_BLOCK = {
FieldType.C_BOOL: _crow_bool_to_python,
FieldType.C_TINYINT: _crow_tinyint_to_python,
FieldType.C_SMALLINT: _crow_smallint_to_python,
FieldType.C_INT: _crow_int_to_python,
FieldType.C_BIGINT: _crow_bigint_to_python,
FieldType.C_FLOAT: _crow_float_to_python,
FieldType.C_DOUBLE: _crow_double_to_python,
FieldType.C_BINARY: _crow_binary_to_python_block,
FieldType.C_TIMESTAMP: _crow_timestamp_to_python,
FieldType.C_NCHAR: _crow_nchar_to_python_block,
FieldType.C_TINYINT_UNSIGNED: _crow_tinyint_unsigned_to_python,
FieldType.C_SMALLINT_UNSIGNED: _crow_smallint_unsigned_to_python,
FieldType.C_INT_UNSIGNED: _crow_int_unsigned_to_python,
FieldType.C_BIGINT_UNSIGNED: _crow_bigint_unsigned_to_python
}
# Corresponding TAOS_FIELD structure in C
class TaosField(ctypes.Structure):
_fields_ = [('name', ctypes.c_char * 65),
('type', ctypes.c_char),
('bytes', ctypes.c_short)]
# C interface class
class CTaosInterface(object):
libtaos = ctypes.CDLL('libtaos.dylib')
libtaos.taos_fetch_fields.restype = ctypes.POINTER(TaosField)
libtaos.taos_init.restype = None
libtaos.taos_connect.restype = ctypes.c_void_p
#libtaos.taos_use_result.restype = ctypes.c_void_p
libtaos.taos_fetch_row.restype = ctypes.POINTER(ctypes.c_void_p)
libtaos.taos_errstr.restype = ctypes.c_char_p
libtaos.taos_subscribe.restype = ctypes.c_void_p
libtaos.taos_consume.restype = ctypes.c_void_p
libtaos.taos_fetch_lengths.restype = ctypes.c_void_p
libtaos.taos_free_result.restype = None
libtaos.taos_errno.restype = ctypes.c_int
libtaos.taos_query.restype = ctypes.POINTER(ctypes.c_void_p)
def __init__(self, config=None):
'''
Function to initialize the class
@host : str, hostname to connect
@user : str, username to connect to server
@password : str, password to connect to server
@db : str, default db to use when log in
@config : str, config directory
@rtype : None
'''
if config is None:
self._config = ctypes.c_char_p(None)
else:
try:
self._config = ctypes.c_char_p(config.encode('utf-8'))
except AttributeError:
raise AttributeError("config is expected as a str")
if config is not None:
CTaosInterface.libtaos.taos_options(3, self._config)
CTaosInterface.libtaos.taos_init()
@property
def config(self):
""" Get current config
"""
return self._config
def connect(
self,
host=None,
user="root",
password="taosdata",
db=None,
port=0):
'''
Function to connect to server
@rtype: c_void_p, TDengine handle
'''
# host
try:
_host = ctypes.c_char_p(host.encode(
"utf-8")) if host is not None else ctypes.c_char_p(None)
except AttributeError:
raise AttributeError("host is expected as a str")
# user
try:
_user = ctypes.c_char_p(user.encode("utf-8"))
except AttributeError:
raise AttributeError("user is expected as a str")
# password
try:
_password = ctypes.c_char_p(password.encode("utf-8"))
except AttributeError:
raise AttributeError("password is expected as a str")
# db
try:
_db = ctypes.c_char_p(
db.encode("utf-8")) if db is not None else ctypes.c_char_p(None)
except AttributeError:
raise AttributeError("db is expected as a str")
# port
try:
_port = ctypes.c_int(port)
except TypeError:
raise TypeError("port is expected as an int")
connection = ctypes.c_void_p(CTaosInterface.libtaos.taos_connect(
_host, _user, _password, _db, _port))
if connection.value is None:
print('connect to TDengine failed')
raise ConnectionError("connect to TDengine failed")
# sys.exit(1)
# else:
# print('connect to TDengine success')
return connection
@staticmethod
def close(connection):
'''Close the TDengine handle
'''
CTaosInterface.libtaos.taos_close(connection)
#print('connection is closed')
@staticmethod
def query(connection, sql):
'''Run SQL
@sql: str, sql string to run
@rtype: 0 on success and -1 on failure
'''
try:
return CTaosInterface.libtaos.taos_query(
connection, ctypes.c_char_p(sql.encode('utf-8')))
except AttributeError:
raise AttributeError("sql is expected as a string")
# finally:
# CTaosInterface.libtaos.close(connection)
@staticmethod
def affectedRows(result):
"""The affected rows after runing query
"""
return CTaosInterface.libtaos.taos_affected_rows(result)
@staticmethod
def subscribe(connection, restart, topic, sql, interval):
"""Create a subscription
@restart boolean,
@sql string, sql statement for data query, must be a 'select' statement.
@topic string, name of this subscription
"""
return ctypes.c_void_p(CTaosInterface.libtaos.taos_subscribe(
connection,
1 if restart else 0,
ctypes.c_char_p(topic.encode('utf-8')),
ctypes.c_char_p(sql.encode('utf-8')),
None,
None,
interval))
@staticmethod
def consume(sub):
"""Consume data of a subscription
"""
result = ctypes.c_void_p(CTaosInterface.libtaos.taos_consume(sub))
fields = []
pfields = CTaosInterface.fetchFields(result)
for i in range(CTaosInterface.libtaos.taos_num_fields(result)):
fields.append({'name': pfields[i].name.decode('utf-8'),
'bytes': pfields[i].bytes,
'type': ord(pfields[i].type)})
return result, fields
@staticmethod
def unsubscribe(sub, keepProgress):
"""Cancel a subscription
"""
CTaosInterface.libtaos.taos_unsubscribe(sub, 1 if keepProgress else 0)
@staticmethod
def useResult(result):
'''Use result after calling self.query
'''
fields = []
pfields = CTaosInterface.fetchFields(result)
for i in range(CTaosInterface.fieldsCount(result)):
fields.append({'name': pfields[i].name.decode('utf-8'),
'bytes': pfields[i].bytes,
'type': ord(pfields[i].type)})
return fields
@staticmethod
def fetchBlock(result, fields):
pblock = ctypes.c_void_p(0)
num_of_rows = CTaosInterface.libtaos.taos_fetch_block(
result, ctypes.byref(pblock))
if num_of_rows == 0:
return None, 0
isMicro = (CTaosInterface.libtaos.taos_result_precision(
result) == FieldType.C_TIMESTAMP_MICRO)
blocks = [None] * len(fields)
fieldL = CTaosInterface.libtaos.taos_fetch_lengths(result)
fieldLen = [
ele for ele in ctypes.cast(
fieldL, ctypes.POINTER(
ctypes.c_int))[
:len(fields)]]
for i in range(len(fields)):
data = ctypes.cast(pblock, ctypes.POINTER(ctypes.c_void_p))[i]
if fields[i]['type'] not in _CONVERT_FUNC_BLOCK:
raise DatabaseError("Invalid data type returned from database")
blocks[i] = _CONVERT_FUNC_BLOCK[fields[i]['type']](
data, num_of_rows, fieldLen[i], isMicro)
return blocks, abs(num_of_rows)
@staticmethod
def fetchRow(result, fields):
pblock = ctypes.c_void_p(0)
pblock = CTaosInterface.libtaos.taos_fetch_row(result)
if pblock:
num_of_rows = 1
isMicro = (CTaosInterface.libtaos.taos_result_precision(
result) == FieldType.C_TIMESTAMP_MICRO)
blocks = [None] * len(fields)
fieldL = CTaosInterface.libtaos.taos_fetch_lengths(result)
fieldLen = [
ele for ele in ctypes.cast(
fieldL, ctypes.POINTER(
ctypes.c_int))[
:len(fields)]]
for i in range(len(fields)):
data = ctypes.cast(pblock, ctypes.POINTER(ctypes.c_void_p))[i]
if fields[i]['type'] not in _CONVERT_FUNC:
raise DatabaseError(
"Invalid data type returned from database")
if data is None:
blocks[i] = [None]
else:
blocks[i] = _CONVERT_FUNC[fields[i]['type']](
data, num_of_rows, fieldLen[i], isMicro)
else:
return None, 0
return blocks, abs(num_of_rows)
@staticmethod
def freeResult(result):
CTaosInterface.libtaos.taos_free_result(result)
result.value = None
@staticmethod
def fieldsCount(result):
return CTaosInterface.libtaos.taos_field_count(result)
@staticmethod
def fetchFields(result):
return CTaosInterface.libtaos.taos_fetch_fields(result)
# @staticmethod
# def fetchRow(result, fields):
# l = []
# row = CTaosInterface.libtaos.taos_fetch_row(result)
# if not row:
# return None
# for i in range(len(fields)):
# l.append(CTaosInterface.getDataValue(
# row[i], fields[i]['type'], fields[i]['bytes']))
# return tuple(l)
# @staticmethod
# def getDataValue(data, dtype, byte):
# '''
# '''
# if not data:
# return None
# if (dtype == CTaosInterface.TSDB_DATA_TYPE_BOOL):
# return ctypes.cast(data, ctypes.POINTER(ctypes.c_bool))[0]
# elif (dtype == CTaosInterface.TSDB_DATA_TYPE_TINYINT):
# return ctypes.cast(data, ctypes.POINTER(ctypes.c_byte))[0]
# elif (dtype == CTaosInterface.TSDB_DATA_TYPE_SMALLINT):
# return ctypes.cast(data, ctypes.POINTER(ctypes.c_short))[0]
# elif (dtype == CTaosInterface.TSDB_DATA_TYPE_INT):
# return ctypes.cast(data, ctypes.POINTER(ctypes.c_int))[0]
# elif (dtype == CTaosInterface.TSDB_DATA_TYPE_BIGINT):
# return ctypes.cast(data, ctypes.POINTER(ctypes.c_int64))[0]
# elif (dtype == CTaosInterface.TSDB_DATA_TYPE_FLOAT):
# return ctypes.cast(data, ctypes.POINTER(ctypes.c_float))[0]
# elif (dtype == CTaosInterface.TSDB_DATA_TYPE_DOUBLE):
# return ctypes.cast(data, ctypes.POINTER(ctypes.c_double))[0]
# elif (dtype == CTaosInterface.TSDB_DATA_TYPE_BINARY):
# return (ctypes.cast(data, ctypes.POINTER(ctypes.c_char))[0:byte]).rstrip('\x00')
# elif (dtype == CTaosInterface.TSDB_DATA_TYPE_TIMESTAMP):
# return ctypes.cast(data, ctypes.POINTER(ctypes.c_int64))[0]
# elif (dtype == CTaosInterface.TSDB_DATA_TYPE_NCHAR):
# return (ctypes.cast(data, ctypes.c_char_p).value).rstrip('\x00')
@staticmethod
def errno(result):
"""Return the error number.
"""
return CTaosInterface.libtaos.taos_errno(result)
@staticmethod
def errStr(result):
"""Return the error styring
"""
return CTaosInterface.libtaos.taos_errstr(result).decode('utf-8')
if __name__ == '__main__':
cinter = CTaosInterface()
conn = cinter.connect()
result = cinter.query(conn, 'show databases')
print('Query Affected rows: {}'.format(cinter.affectedRows(result)))
fields = CTaosInterface.useResult(result)
data, num_of_rows = CTaosInterface.fetchBlock(result, fields)
print(data)
cinter.freeResult(result)
cinter.close(conn)
src/connector/python/osx/python3/taos/connection.py 已删除 100644 → 0
浏览文件 @ 398397bc
from .cursor import TDengineCursor
from .subscription import TDengineSubscription
from .cinterface import CTaosInterface
class TDengineConnection(object):
""" TDengine connection object
"""
def __init__(self, *args, **kwargs):
self._conn = None
self._host = None
self._user = "root"
self._password = "taosdata"
self._database = None
self._port = 0
self._config = None
self._chandle = None
self.config(**kwargs)
def config(self, **kwargs):
# host
if 'host' in kwargs:
self._host = kwargs['host']
# user
if 'user' in kwargs:
self._user = kwargs['user']
# password
if 'password' in kwargs:
self._password = kwargs['password']
# database
if 'database' in kwargs:
self._database = kwargs['database']
# port
if 'port' in kwargs:
self._port = kwargs['port']
# config
if 'config' in kwargs:
self._config = kwargs['config']
self._chandle = CTaosInterface(self._config)
self._conn = self._chandle.connect(
self._host,
self._user,
self._password,
self._database,
self._port)
def close(self):
"""Close current connection.
"""
return CTaosInterface.close(self._conn)
def subscribe(self, restart, topic, sql, interval):
"""Create a subscription.
"""
if self._conn is None:
return None
sub = CTaosInterface.subscribe(
self._conn, restart, topic, sql, interval)
return TDengineSubscription(sub)
def cursor(self):
"""Return a new Cursor object using the connection.
"""
return TDengineCursor(self)
def commit(self):
"""Commit any pending transaction to the database.
Since TDengine do not support transactions, the implement is void functionality.
"""
pass
def rollback(self):
"""Void functionality
"""
pass
def clear_result_set(self):
"""Clear unused result set on this connection.
"""
pass
if __name__ == "__main__":
conn = TDengineConnection(host='192.168.1.107')
conn.close()
print("Hello world")
src/connector/python/osx/python3/taos/constants.py 已删除 100644 → 0
浏览文件 @ 398397bc
"""Constants in TDengine python
"""
from .dbapi import *
class FieldType(object):
"""TDengine Field Types
"""
# type_code
C_NULL = 0
C_BOOL = 1
C_TINYINT = 2
C_SMALLINT = 3
C_INT = 4
C_BIGINT = 5
C_FLOAT = 6
C_DOUBLE = 7
C_BINARY = 8
C_TIMESTAMP = 9
C_NCHAR = 10
C_TINYINT_UNSIGNED = 11
C_SMALLINT_UNSIGNED = 12
C_INT_UNSIGNED = 13
C_BIGINT_UNSIGNED = 14
# NULL value definition
# NOTE: These values should change according to C definition in tsdb.h
C_BOOL_NULL = 0x02
C_TINYINT_NULL = -128
C_TINYINT_UNSIGNED_NULL = 255
C_SMALLINT_NULL = -32768
C_SMALLINT_UNSIGNED_NULL = 65535
C_INT_NULL = -2147483648
C_INT_UNSIGNED_NULL = 4294967295
C_BIGINT_NULL = -9223372036854775808
C_BIGINT_UNSIGNED_NULL = 18446744073709551615
C_FLOAT_NULL = float('nan')
C_DOUBLE_NULL = float('nan')
C_BINARY_NULL = bytearray([int('0xff', 16)])
# Timestamp precision definition
C_TIMESTAMP_MILLI = 0
C_TIMESTAMP_MICRO = 1
src/connector/python/osx/python3/taos/dbapi.py 已删除 100644 → 0
浏览文件 @ 398397bc
"""Type Objects and Constructors.
"""
import time
import datetime
class DBAPITypeObject(object):
def __init__(self, *values):
self.values = values
def __com__(self, other):
if other in self.values:
return 0
if other < self.values:
return 1
else:
return -1
Date = datetime.date
Time = datetime.time
Timestamp = datetime.datetime
def DataFromTicks(ticks):
return Date(*time.localtime(ticks)[:3])
def TimeFromTicks(ticks):
return Time(*time.localtime(ticks)[3:6])
def TimestampFromTicks(ticks):
return Timestamp(*time.localtime(ticks)[:6])
Binary = bytes
# STRING = DBAPITypeObject(*constants.FieldType.get_string_types())
# BINARY = DBAPITypeObject(*constants.FieldType.get_binary_types())
# NUMBER = BAPITypeObject(*constants.FieldType.get_number_types())
# DATETIME = DBAPITypeObject(*constants.FieldType.get_timestamp_types())
# ROWID = DBAPITypeObject()
src/connector/python/osx/python3/taos/error.py 已删除 100644 → 0
浏览文件 @ 398397bc
"""Python exceptions
"""
class Error(Exception):
def __init__(self, msg=None, errno=None):
self.msg = msg
self._full_msg = self.msg
self.errno = errno
def __str__(self):
return self._full_msg
class Warning(Exception):
"""Exception raised for important warnings like data truncations while inserting.
"""
pass
class InterfaceError(Error):
"""Exception raised for errors that are related to the database interface rather than the database itself.
"""
pass
class DatabaseError(Error):
"""Exception raised for errors that are related to the database.
"""
pass
class DataError(DatabaseError):
"""Exception raised for errors that are due to problems with the processed data like division by zero, numeric value out of range.
"""
pass
class OperationalError(DatabaseError):
"""Exception raised for errors that are related to the database's operation and not necessarily under the control of the programmer
"""
pass
class IntegrityError(DatabaseError):
"""Exception raised when the relational integrity of the database is affected.
"""
pass
class InternalError(DatabaseError):
"""Exception raised when the database encounters an internal error.
"""
pass
class ProgrammingError(DatabaseError):
"""Exception raised for programming errors.
"""
pass
class NotSupportedError(DatabaseError):
"""Exception raised in case a method or database API was used which is not supported by the database,.
"""
pass
src/connector/python/osx/python3/taos/subscription.py 已删除 100644 → 0
浏览文件 @ 398397bc
from .cinterface import CTaosInterface
from .error import *
class TDengineSubscription(object):
"""TDengine subscription object
"""
def __init__(self, sub):
self._sub = sub
def consume(self):
"""Consume rows of a subscription
"""
if self._sub is None:
raise OperationalError("Invalid use of consume")
result, fields = CTaosInterface.consume(self._sub)
buffer = [[] for i in range(len(fields))]
while True:
block, num_of_fields = CTaosInterface.fetchBlock(result, fields)
if num_of_fields == 0:
break
for i in range(len(fields)):
buffer[i].extend(block[i])
self.fields = fields
return list(map(tuple, zip(*buffer)))
def close(self, keepProgress=True):
"""Close the Subscription.
"""
if self._sub is None:
return False
CTaosInterface.unsubscribe(self._sub, keepProgress)
return True
if __name__ == '__main__':
from .connection import TDengineConnection
conn = TDengineConnection(
host="127.0.0.1",
user="root",
password="taosdata",
database="test")
# Generate a cursor object to run SQL commands
sub = conn.subscribe(True, "test", "select * from meters;", 1000)
for i in range(0, 10):
data = sub.consume()
for d in data:
print(d)
sub.close()
conn.close()
src/connector/python/linux/python3/setup.py → src/connector/python/setup.py
浏览文件 @ 7617a973
...@@ -5,16 +5,30 @@ with open("README.md", "r") as fh: ...@@ -5,16 +5,30 @@ with open("README.md", "r") as fh:
setuptools.setup( setuptools.setup(
name="taos", name="taos",
version="2.0.9", version="2.0.10",
author="Taosdata Inc.", author="Taosdata Inc.",
author_email="support@taosdata.com", author_email="support@taosdata.com",
description="TDengine python client package", description="TDengine python client package",
long_description=long_description, long_description=long_description,
long_description_content_type="text/markdown", long_description_content_type="text/markdown",
url="https://github.com/pypa/sampleproject", url="https://github.com/taosdata/TDengine/tree/develop/src/connector/python",
packages=setuptools.find_packages(), packages=setuptools.find_packages(),
classifiers=[ classifiers=[
"Environment :: Console",
"Environment :: MacOS X",
"Environment :: Win32 (MS Windows)",
"Programming Language :: Python",
"Programming Language :: Python :: 3", "Programming Language :: Python :: 3",
"Programming Language :: Python :: 3.6",
"Programming Language :: Python :: 3.7",
"Programming Language :: Python :: 3.8",
"Programming Language :: Python :: 3.9",
"License :: OSI Approved :: GNU Affero General Public License v3 or later (AGPLv3+)",
"Operating System :: MacOS",
"Programming Language :: Python :: 2.7",
"Operating System :: Linux", "Operating System :: Linux",
"Operating System :: POSIX :: Linux",
"Operating System :: Microsoft :: Windows",
"Operating System :: Microsoft :: Windows :: Windows 10",
], ],
) )
src/connector/python/linux/python2/taos/cinterface.py → src/connector/python/taos/cinterface.py
浏览文件 @ 7617a973
...@@ -3,6 +3,7 @@ from .constants import FieldType ...@@ -3,6 +3,7 @@ from .constants import FieldType
from .error import * from .error import *
import math import math
import datetime import datetime
import platform
def _convert_millisecond_to_datetime(milli): def _convert_millisecond_to_datetime(milli):
...@@ -20,13 +21,6 @@ def _crow_timestamp_to_python(data, num_of_rows, nbytes=None, micro=False): ...@@ -20,13 +21,6 @@ def _crow_timestamp_to_python(data, num_of_rows, nbytes=None, micro=False):
if micro: if micro:
_timestamp_converter = _convert_microsecond_to_datetime _timestamp_converter = _convert_microsecond_to_datetime
if num_of_rows > 0:
return [
None if ele == FieldType.C_BIGINT_NULL else _timestamp_converter(ele) for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_int64))[
:abs(num_of_rows)]]
else:
return [ return [
None if ele == FieldType.C_BIGINT_NULL else _timestamp_converter(ele) for ele in ctypes.cast( None if ele == FieldType.C_BIGINT_NULL else _timestamp_converter(ele) for ele in ctypes.cast(
data, ctypes.POINTER( data, ctypes.POINTER(
...@@ -37,27 +31,16 @@ def _crow_timestamp_to_python(data, num_of_rows, nbytes=None, micro=False): ...@@ -37,27 +31,16 @@ def _crow_timestamp_to_python(data, num_of_rows, nbytes=None, micro=False):
def _crow_bool_to_python(data, num_of_rows, nbytes=None, micro=False): def _crow_bool_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C bool row to python row """Function to convert C bool row to python row
""" """
if num_of_rows > 0:
return [ return [
None if ele == FieldType.C_BOOL_NULL else bool(ele) for ele in ctypes.cast( None if ele == FieldType.C_BOOL_NULL else bool(ele) for ele in ctypes.cast(
data, ctypes.POINTER( data, ctypes.POINTER(
ctypes.c_byte))[ ctypes.c_byte))[
:abs(num_of_rows)]] :abs(num_of_rows)]]
else:
return [
None if ele == FieldType.C_BOOL_NULL else bool(ele) for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_bool))[
:abs(num_of_rows)]]
def _crow_tinyint_to_python(data, num_of_rows, nbytes=None, micro=False): def _crow_tinyint_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C tinyint row to python row """Function to convert C tinyint row to python row
""" """
if num_of_rows > 0:
return [None if ele == FieldType.C_TINYINT_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(ctypes.c_byte))[:abs(num_of_rows)]]
else:
return [None if ele == FieldType.C_TINYINT_NULL else ele for ele in ctypes.cast( return [None if ele == FieldType.C_TINYINT_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(ctypes.c_byte))[:abs(num_of_rows)]] data, ctypes.POINTER(ctypes.c_byte))[:abs(num_of_rows)]]
...@@ -69,13 +52,6 @@ def _crow_tinyint_unsigned_to_python( ...@@ -69,13 +52,6 @@ def _crow_tinyint_unsigned_to_python(
micro=False): micro=False):
"""Function to convert C tinyint row to python row """Function to convert C tinyint row to python row
""" """
if num_of_rows > 0:
return [
None if ele == FieldType.C_TINYINT_UNSIGNED_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_ubyte))[
:abs(num_of_rows)]]
else:
return [ return [
None if ele == FieldType.C_TINYINT_UNSIGNED_NULL else ele for ele in ctypes.cast( None if ele == FieldType.C_TINYINT_UNSIGNED_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER( data, ctypes.POINTER(
...@@ -86,13 +62,6 @@ def _crow_tinyint_unsigned_to_python( ...@@ -86,13 +62,6 @@ def _crow_tinyint_unsigned_to_python(
def _crow_smallint_to_python(data, num_of_rows, nbytes=None, micro=False): def _crow_smallint_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C smallint row to python row """Function to convert C smallint row to python row
""" """
if num_of_rows > 0:
return [
None if ele == FieldType.C_SMALLINT_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_short))[
:abs(num_of_rows)]]
else:
return [ return [
None if ele == FieldType.C_SMALLINT_NULL else ele for ele in ctypes.cast( None if ele == FieldType.C_SMALLINT_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER( data, ctypes.POINTER(
...@@ -104,13 +73,6 @@ def _crow_smallint_unsigned_to_python( ...@@ -104,13 +73,6 @@ def _crow_smallint_unsigned_to_python(
data, num_of_rows, nbytes=None, micro=False): data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C smallint row to python row """Function to convert C smallint row to python row
""" """
if num_of_rows > 0:
return [
None if ele == FieldType.C_SMALLINT_UNSIGNED_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_ushort))[
:abs(num_of_rows)]]
else:
return [ return [
None if ele == FieldType.C_SMALLINT_UNSIGNED_NULL else ele for ele in ctypes.cast( None if ele == FieldType.C_SMALLINT_UNSIGNED_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER( data, ctypes.POINTER(
...@@ -121,10 +83,6 @@ def _crow_smallint_unsigned_to_python( ...@@ -121,10 +83,6 @@ def _crow_smallint_unsigned_to_python(
def _crow_int_to_python(data, num_of_rows, nbytes=None, micro=False): def _crow_int_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C int row to python row """Function to convert C int row to python row
""" """
if num_of_rows > 0:
return [None if ele == FieldType.C_INT_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(ctypes.c_int))[:abs(num_of_rows)]]
else:
return [None if ele == FieldType.C_INT_NULL else ele for ele in ctypes.cast( return [None if ele == FieldType.C_INT_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(ctypes.c_int))[:abs(num_of_rows)]] data, ctypes.POINTER(ctypes.c_int))[:abs(num_of_rows)]]
...@@ -132,13 +90,6 @@ def _crow_int_to_python(data, num_of_rows, nbytes=None, micro=False): ...@@ -132,13 +90,6 @@ def _crow_int_to_python(data, num_of_rows, nbytes=None, micro=False):
def _crow_int_unsigned_to_python(data, num_of_rows, nbytes=None, micro=False): def _crow_int_unsigned_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C int row to python row """Function to convert C int row to python row
""" """
if num_of_rows > 0:
return [
None if ele == FieldType.C_INT_UNSIGNED_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_uint))[
:abs(num_of_rows)]]
else:
return [ return [
None if ele == FieldType.C_INT_UNSIGNED_NULL else ele for ele in ctypes.cast( None if ele == FieldType.C_INT_UNSIGNED_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER( data, ctypes.POINTER(
...@@ -149,10 +100,6 @@ def _crow_int_unsigned_to_python(data, num_of_rows, nbytes=None, micro=False): ...@@ -149,10 +100,6 @@ def _crow_int_unsigned_to_python(data, num_of_rows, nbytes=None, micro=False):
def _crow_bigint_to_python(data, num_of_rows, nbytes=None, micro=False): def _crow_bigint_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C bigint row to python row """Function to convert C bigint row to python row
""" """
if num_of_rows > 0:
return [None if ele == FieldType.C_BIGINT_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(ctypes.c_int64))[:abs(num_of_rows)]]
else:
return [None if ele == FieldType.C_BIGINT_NULL else ele for ele in ctypes.cast( return [None if ele == FieldType.C_BIGINT_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(ctypes.c_int64))[:abs(num_of_rows)]] data, ctypes.POINTER(ctypes.c_int64))[:abs(num_of_rows)]]
...@@ -164,13 +111,6 @@ def _crow_bigint_unsigned_to_python( ...@@ -164,13 +111,6 @@ def _crow_bigint_unsigned_to_python(
micro=False): micro=False):
"""Function to convert C bigint row to python row """Function to convert C bigint row to python row
""" """
if num_of_rows > 0:
return [
None if ele == FieldType.C_BIGINT_UNSIGNED_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_uint64))[
:abs(num_of_rows)]]
else:
return [ return [
None if ele == FieldType.C_BIGINT_UNSIGNED_NULL else ele for ele in ctypes.cast( None if ele == FieldType.C_BIGINT_UNSIGNED_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER( data, ctypes.POINTER(
...@@ -181,10 +121,6 @@ def _crow_bigint_unsigned_to_python( ...@@ -181,10 +121,6 @@ def _crow_bigint_unsigned_to_python(
def _crow_float_to_python(data, num_of_rows, nbytes=None, micro=False): def _crow_float_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C float row to python row """Function to convert C float row to python row
""" """
if num_of_rows > 0:
return [None if math.isnan(ele) else ele for ele in ctypes.cast(
data, ctypes.POINTER(ctypes.c_float))[:abs(num_of_rows)]]
else:
return [None if math.isnan(ele) else ele for ele in ctypes.cast( return [None if math.isnan(ele) else ele for ele in ctypes.cast(
data, ctypes.POINTER(ctypes.c_float))[:abs(num_of_rows)]] data, ctypes.POINTER(ctypes.c_float))[:abs(num_of_rows)]]
...@@ -192,10 +128,6 @@ def _crow_float_to_python(data, num_of_rows, nbytes=None, micro=False): ...@@ -192,10 +128,6 @@ def _crow_float_to_python(data, num_of_rows, nbytes=None, micro=False):
def _crow_double_to_python(data, num_of_rows, nbytes=None, micro=False): def _crow_double_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C double row to python row """Function to convert C double row to python row
""" """
if num_of_rows > 0:
return [None if math.isnan(ele) else ele for ele in ctypes.cast(
data, ctypes.POINTER(ctypes.c_double))[:abs(num_of_rows)]]
else:
return [None if math.isnan(ele) else ele for ele in ctypes.cast( return [None if math.isnan(ele) else ele for ele in ctypes.cast(
data, ctypes.POINTER(ctypes.c_double))[:abs(num_of_rows)]] data, ctypes.POINTER(ctypes.c_double))[:abs(num_of_rows)]]
...@@ -204,10 +136,6 @@ def _crow_binary_to_python(data, num_of_rows, nbytes=None, micro=False): ...@@ -204,10 +136,6 @@ def _crow_binary_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C binary row to python row """Function to convert C binary row to python row
""" """
assert(nbytes is not None) assert(nbytes is not None)
if num_of_rows > 0:
return [None if ele.value[0:1] == FieldType.C_BINARY_NULL else ele.value.decode(
'utf-8') for ele in (ctypes.cast(data, ctypes.POINTER(ctypes.c_char * nbytes)))[:abs(num_of_rows)]]
else:
return [None if ele.value[0:1] == FieldType.C_BINARY_NULL else ele.value.decode( return [None if ele.value[0:1] == FieldType.C_BINARY_NULL else ele.value.decode(
'utf-8') for ele in (ctypes.cast(data, ctypes.POINTER(ctypes.c_char * nbytes)))[:abs(num_of_rows)]] 'utf-8') for ele in (ctypes.cast(data, ctypes.POINTER(ctypes.c_char * nbytes)))[:abs(num_of_rows)]]
...@@ -236,19 +164,6 @@ def _crow_binary_to_python_block(data, num_of_rows, nbytes=None, micro=False): ...@@ -236,19 +164,6 @@ def _crow_binary_to_python_block(data, num_of_rows, nbytes=None, micro=False):
""" """
assert(nbytes is not None) assert(nbytes is not None)
res = [] res = []
if num_of_rows > 0:
for i in range(abs(num_of_rows)):
try:
rbyte = ctypes.cast(
data + nbytes * i,
ctypes.POINTER(
ctypes.c_short))[
:1].pop()
tmpstr = ctypes.c_char_p(data + nbytes * i + 2)
res.append(tmpstr.value.decode()[0:rbyte])
except ValueError:
res.append(None)
else:
for i in range(abs(num_of_rows)): for i in range(abs(num_of_rows)):
try: try:
rbyte = ctypes.cast( rbyte = ctypes.cast(
...@@ -268,20 +183,12 @@ def _crow_nchar_to_python_block(data, num_of_rows, nbytes=None, micro=False): ...@@ -268,20 +183,12 @@ def _crow_nchar_to_python_block(data, num_of_rows, nbytes=None, micro=False):
""" """
assert(nbytes is not None) assert(nbytes is not None)
res = [] res = []
if num_of_rows >= 0:
for i in range(abs(num_of_rows)): for i in range(abs(num_of_rows)):
try: try:
tmpstr = ctypes.c_char_p(data + nbytes * i + 2) tmpstr = ctypes.c_char_p(data + nbytes * i + 2)
res.append(tmpstr.value.decode()) res.append(tmpstr.value.decode())
except ValueError: except ValueError:
res.append(None) res.append(None)
else:
for i in range(abs(num_of_rows)):
try:
res.append((ctypes.cast(data + nbytes * i + 2,
ctypes.POINTER(ctypes.c_wchar * (nbytes // 4))))[0].value)
except ValueError:
res.append(None)
return res return res
...@@ -330,14 +237,38 @@ class TaosField(ctypes.Structure): ...@@ -330,14 +237,38 @@ class TaosField(ctypes.Structure):
# C interface class # C interface class
def _load_taos_linux():
return ctypes.CDLL('libtaos.so')
def _load_taos_darwin():
return ctypes.cDLL('libtaos.dylib')
def _load_taos_windows():
return ctypes.windll.LoadLibrary('taos')
def _load_taos():
load_func = {
'Linux': _load_taos_linux,
'Darwin': _load_taos_darwin,
'Windows': _load_taos_windows,
}
try:
return load_func[platform.system()]()
except:
sys.exit('unsupported platform to TDengine connector')
class CTaosInterface(object): class CTaosInterface(object):
libtaos = ctypes.CDLL('libtaos.so') libtaos = _load_taos()
libtaos.taos_fetch_fields.restype = ctypes.POINTER(TaosField) libtaos.taos_fetch_fields.restype = ctypes.POINTER(TaosField)
libtaos.taos_init.restype = None libtaos.taos_init.restype = None
libtaos.taos_connect.restype = ctypes.c_void_p libtaos.taos_connect.restype = ctypes.c_void_p
#libtaos.taos_use_result.restype = ctypes.c_void_p # libtaos.taos_use_result.restype = ctypes.c_void_p
libtaos.taos_fetch_row.restype = ctypes.POINTER(ctypes.c_void_p) libtaos.taos_fetch_row.restype = ctypes.POINTER(ctypes.c_void_p)
libtaos.taos_errstr.restype = ctypes.c_char_p libtaos.taos_errstr.restype = ctypes.c_char_p
libtaos.taos_subscribe.restype = ctypes.c_void_p libtaos.taos_subscribe.restype = ctypes.c_void_p
...@@ -438,7 +369,7 @@ class CTaosInterface(object): ...@@ -438,7 +369,7 @@ class CTaosInterface(object):
'''Close the TDengine handle '''Close the TDengine handle
''' '''
CTaosInterface.libtaos.taos_close(connection) CTaosInterface.libtaos.taos_close(connection)
#print('connection is closed') # print('connection is closed')
@staticmethod @staticmethod
def query(connection, sql): def query(connection, sql):
......
src/connector/python/osx/python3/taos/cursor.py → src/connector/python/taos/cursor.py
浏览文件 @ 7617a973
...@@ -45,6 +45,12 @@ class TDengineCursor(object): ...@@ -45,6 +45,12 @@ class TDengineCursor(object):
return self return self
def __next__(self): def __next__(self):
return self._taos_next()
def next(self):
return self._taos_next()
def _taos_next(self):
if self._result is None or self._fields is None: if self._result is None or self._fields is None:
raise OperationalError("Invalid use of fetch iterator") raise OperationalError("Invalid use of fetch iterator")
......
src/connector/python/windows/python2/LICENSE 已删除 100644 → 0
浏览文件 @ 398397bc
Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
This program is free software: you can use, redistribute, and/or modify
it under the terms of the GNU Affero General Public License, version 3
or later ("AGPL"), as published by the Free Software Foundation.
This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
src/connector/python/windows/python2/README.md 已删除 100644 → 0
浏览文件 @ 398397bc
# TDengine python client interface
\ No newline at end of file
src/connector/python/windows/python2/setup.py 已删除 100644 → 0
浏览文件 @ 398397bc
import setuptools
with open("README.md", "r") as fh:
long_description = fh.read()
setuptools.setup(
name="taos",
version="2.0.9",
author="Taosdata Inc.",
author_email="support@taosdata.com",
description="TDengine python client package",
long_description=long_description,
long_description_content_type="text/markdown",
url="https://github.com/pypa/sampleproject",
packages=setuptools.find_packages(),
classifiers=[
"Programming Language :: Python :: 2",
"Operating System :: Windows",
],
)
src/connector/python/windows/python2/taos/__init__.py 已删除 100644 → 0
浏览文件 @ 398397bc
from .connection import TDengineConnection
from .cursor import TDengineCursor
# Globals
threadsafety = 0
paramstyle = 'pyformat'
__all__ = ['connection', 'cursor']
def connect(*args, **kwargs):
""" Function to return a TDengine connector object
Current supporting keyword parameters:
@dsn: Data source name as string
@user: Username as string(optional)
@password: Password as string(optional)
@host: Hostname(optional)
@database: Database name(optional)
@rtype: TDengineConnector
"""
return TDengineConnection(*args, **kwargs)
src/connector/python/windows/python2/taos/cinterface.py 已删除 100644 → 0
浏览文件 @ 398397bc
import ctypes
from .constants import FieldType
from .error import *
import math
import datetime
def _convert_millisecond_to_datetime(milli):
return datetime.datetime.fromtimestamp(milli / 1000.0)
def _convert_microsecond_to_datetime(micro):
return datetime.datetime.fromtimestamp(micro / 1000000.0)
def _crow_timestamp_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C bool row to python row
"""
_timestamp_converter = _convert_millisecond_to_datetime
if micro:
_timestamp_converter = _convert_microsecond_to_datetime
if num_of_rows > 0:
return [
None if ele == FieldType.C_BIGINT_NULL else _timestamp_converter(ele) for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_int64))[
:abs(num_of_rows)]]
else:
return [
None if ele == FieldType.C_BIGINT_NULL else _timestamp_converter(ele) for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_int64))[
:abs(num_of_rows)]]
def _crow_bool_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C bool row to python row
"""
if num_of_rows > 0:
return [
None if ele == FieldType.C_BOOL_NULL else bool(ele) for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_byte))[
:abs(num_of_rows)]]
else:
return [
None if ele == FieldType.C_BOOL_NULL else bool(ele) for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_bool))[
:abs(num_of_rows)]]
def _crow_tinyint_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C tinyint row to python row
"""
if num_of_rows > 0:
return [None if ele == FieldType.C_TINYINT_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(ctypes.c_byte))[:abs(num_of_rows)]]
else:
return [None if ele == FieldType.C_TINYINT_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(ctypes.c_byte))[:abs(num_of_rows)]]
def _crow_tinyint_unsigned_to_python(
data,
num_of_rows,
nbytes=None,
micro=False):
"""Function to convert C tinyint row to python row
"""
if num_of_rows > 0:
return [
None if ele == FieldType.C_TINYINT_UNSIGNED_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_ubyte))[
:abs(num_of_rows)]]
else:
return [
None if ele == FieldType.C_TINYINT_UNSIGNED_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_ubyte))[
:abs(num_of_rows)]]
def _crow_smallint_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C smallint row to python row
"""
if num_of_rows > 0:
return [
None if ele == FieldType.C_SMALLINT_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_short))[
:abs(num_of_rows)]]
else:
return [
None if ele == FieldType.C_SMALLINT_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_short))[
:abs(num_of_rows)]]
def _crow_smallint_unsigned_to_python(
data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C smallint row to python row
"""
if num_of_rows > 0:
return [
None if ele == FieldType.C_SMALLINT_UNSIGNED_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_ushort))[
:abs(num_of_rows)]]
else:
return [
None if ele == FieldType.C_SMALLINT_UNSIGNED_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_ushort))[
:abs(num_of_rows)]]
def _crow_int_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C int row to python row
"""
if num_of_rows > 0:
return [None if ele == FieldType.C_INT_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(ctypes.c_int))[:abs(num_of_rows)]]
else:
return [None if ele == FieldType.C_INT_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(ctypes.c_int))[:abs(num_of_rows)]]
def _crow_int_unsigned_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C int row to python row
"""
if num_of_rows > 0:
return [
None if ele == FieldType.C_INT_UNSIGNED_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_uint))[
:abs(num_of_rows)]]
else:
return [
None if ele == FieldType.C_INT_UNSIGNED_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_uint))[
:abs(num_of_rows)]]
def _crow_bigint_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C bigint row to python row
"""
if num_of_rows > 0:
return [None if ele == FieldType.C_BIGINT_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(ctypes.c_int64))[:abs(num_of_rows)]]
else:
return [None if ele == FieldType.C_BIGINT_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(ctypes.c_int64))[:abs(num_of_rows)]]
def _crow_bigint_unsigned_to_python(
data,
num_of_rows,
nbytes=None,
micro=False):
"""Function to convert C bigint row to python row
"""
if num_of_rows > 0:
return [
None if ele == FieldType.C_BIGINT_UNSIGNED_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_uint64))[
:abs(num_of_rows)]]
else:
return [
None if ele == FieldType.C_BIGINT_UNSIGNED_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_uint64))[
:abs(num_of_rows)]]
def _crow_float_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C float row to python row
"""
if num_of_rows > 0:
return [None if math.isnan(ele) else ele for ele in ctypes.cast(
data, ctypes.POINTER(ctypes.c_float))[:abs(num_of_rows)]]
else:
return [None if math.isnan(ele) else ele for ele in ctypes.cast(
data, ctypes.POINTER(ctypes.c_float))[:abs(num_of_rows)]]
def _crow_double_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C double row to python row
"""
if num_of_rows > 0:
return [None if math.isnan(ele) else ele for ele in ctypes.cast(
data, ctypes.POINTER(ctypes.c_double))[:abs(num_of_rows)]]
else:
return [None if math.isnan(ele) else ele for ele in ctypes.cast(
data, ctypes.POINTER(ctypes.c_double))[:abs(num_of_rows)]]
def _crow_binary_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C binary row to python row
"""
assert(nbytes is not None)
if num_of_rows > 0:
return [None if ele.value[0:1] == FieldType.C_BINARY_NULL else ele.value.decode(
'utf-8') for ele in (ctypes.cast(data, ctypes.POINTER(ctypes.c_char * nbytes)))[:abs(num_of_rows)]]
else:
return [None if ele.value[0:1] == FieldType.C_BINARY_NULL else ele.value.decode(
'utf-8') for ele in (ctypes.cast(data, ctypes.POINTER(ctypes.c_char * nbytes)))[:abs(num_of_rows)]]
def _crow_nchar_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C nchar row to python row
"""
assert(nbytes is not None)
res = []
for i in range(abs(num_of_rows)):
try:
if num_of_rows >= 0:
tmpstr = ctypes.c_char_p(data)
res.append(tmpstr.value.decode())
else:
res.append((ctypes.cast(data + nbytes * i,
ctypes.POINTER(ctypes.c_wchar * (nbytes // 4))))[0].value)
except ValueError:
res.append(None)
return res
def _crow_binary_to_python_block(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C binary row to python row
"""
assert(nbytes is not None)
res = []
if num_of_rows > 0:
for i in range(abs(num_of_rows)):
try:
rbyte = ctypes.cast(
data + nbytes * i,
ctypes.POINTER(
ctypes.c_short))[
:1].pop()
tmpstr = ctypes.c_char_p(data + nbytes * i + 2)
res.append(tmpstr.value.decode()[0:rbyte])
except ValueError:
res.append(None)
else:
for i in range(abs(num_of_rows)):
try:
rbyte = ctypes.cast(
data + nbytes * i,
ctypes.POINTER(
ctypes.c_short))[
:1].pop()
tmpstr = ctypes.c_char_p(data + nbytes * i + 2)
res.append(tmpstr.value.decode()[0:rbyte])
except ValueError:
res.append(None)
return res
def _crow_nchar_to_python_block(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C nchar row to python row
"""
assert(nbytes is not None)
res = []
if num_of_rows >= 0:
for i in range(abs(num_of_rows)):
try:
tmpstr = ctypes.c_char_p(data + nbytes * i + 2)
res.append(tmpstr.value.decode())
except ValueError:
res.append(None)
else:
for i in range(abs(num_of_rows)):
try:
res.append((ctypes.cast(data + nbytes * i + 2,
ctypes.POINTER(ctypes.c_wchar * (nbytes // 4))))[0].value)
except ValueError:
res.append(None)
return res
_CONVERT_FUNC = {
FieldType.C_BOOL: _crow_bool_to_python,
FieldType.C_TINYINT: _crow_tinyint_to_python,
FieldType.C_SMALLINT: _crow_smallint_to_python,
FieldType.C_INT: _crow_int_to_python,
FieldType.C_BIGINT: _crow_bigint_to_python,
FieldType.C_FLOAT: _crow_float_to_python,
FieldType.C_DOUBLE: _crow_double_to_python,
FieldType.C_BINARY: _crow_binary_to_python,
FieldType.C_TIMESTAMP: _crow_timestamp_to_python,
FieldType.C_NCHAR: _crow_nchar_to_python,
FieldType.C_TINYINT_UNSIGNED: _crow_tinyint_unsigned_to_python,
FieldType.C_SMALLINT_UNSIGNED: _crow_smallint_unsigned_to_python,
FieldType.C_INT_UNSIGNED: _crow_int_unsigned_to_python,
FieldType.C_BIGINT_UNSIGNED: _crow_bigint_unsigned_to_python
}
_CONVERT_FUNC_BLOCK = {
FieldType.C_BOOL: _crow_bool_to_python,
FieldType.C_TINYINT: _crow_tinyint_to_python,
FieldType.C_SMALLINT: _crow_smallint_to_python,
FieldType.C_INT: _crow_int_to_python,
FieldType.C_BIGINT: _crow_bigint_to_python,
FieldType.C_FLOAT: _crow_float_to_python,
FieldType.C_DOUBLE: _crow_double_to_python,
FieldType.C_BINARY: _crow_binary_to_python_block,
FieldType.C_TIMESTAMP: _crow_timestamp_to_python,
FieldType.C_NCHAR: _crow_nchar_to_python_block,
FieldType.C_TINYINT_UNSIGNED: _crow_tinyint_unsigned_to_python,
FieldType.C_SMALLINT_UNSIGNED: _crow_smallint_unsigned_to_python,
FieldType.C_INT_UNSIGNED: _crow_int_unsigned_to_python,
FieldType.C_BIGINT_UNSIGNED: _crow_bigint_unsigned_to_python
}
# Corresponding TAOS_FIELD structure in C
class TaosField(ctypes.Structure):
_fields_ = [('name', ctypes.c_char * 65),
('type', ctypes.c_char),
('bytes', ctypes.c_short)]
# C interface class
class CTaosInterface(object):
libtaos = ctypes.windll.LoadLibrary('taos')
libtaos.taos_fetch_fields.restype = ctypes.POINTER(TaosField)
libtaos.taos_init.restype = None
libtaos.taos_connect.restype = ctypes.c_void_p
#libtaos.taos_use_result.restype = ctypes.c_void_p
libtaos.taos_fetch_row.restype = ctypes.POINTER(ctypes.c_void_p)
libtaos.taos_errstr.restype = ctypes.c_char_p
libtaos.taos_subscribe.restype = ctypes.c_void_p
libtaos.taos_consume.restype = ctypes.c_void_p
libtaos.taos_fetch_lengths.restype = ctypes.c_void_p
libtaos.taos_free_result.restype = None
libtaos.taos_errno.restype = ctypes.c_int
libtaos.taos_query.restype = ctypes.POINTER(ctypes.c_void_p)
def __init__(self, config=None):
'''
Function to initialize the class
@host : str, hostname to connect
@user : str, username to connect to server
@password : str, password to connect to server
@db : str, default db to use when log in
@config : str, config directory
@rtype : None
'''
if config is None:
self._config = ctypes.c_char_p(None)
else:
try:
self._config = ctypes.c_char_p(config.encode('utf-8'))
except AttributeError:
raise AttributeError("config is expected as a str")
if config is not None:
CTaosInterface.libtaos.taos_options(3, self._config)
CTaosInterface.libtaos.taos_init()
@property
def config(self):
""" Get current config
"""
return self._config
def connect(
self,
host=None,
user="root",
password="taosdata",
db=None,
port=0):
'''
Function to connect to server
@rtype: c_void_p, TDengine handle
'''
# host
try:
_host = ctypes.c_char_p(host.encode(
"utf-8")) if host is not None else ctypes.c_char_p(None)
except AttributeError:
raise AttributeError("host is expected as a str")
# user
try:
_user = ctypes.c_char_p(user.encode("utf-8"))
except AttributeError:
raise AttributeError("user is expected as a str")
# password
try:
_password = ctypes.c_char_p(password.encode("utf-8"))
except AttributeError:
raise AttributeError("password is expected as a str")
# db
try:
_db = ctypes.c_char_p(
db.encode("utf-8")) if db is not None else ctypes.c_char_p(None)
except AttributeError:
raise AttributeError("db is expected as a str")
# port
try:
_port = ctypes.c_int(port)
except TypeError:
raise TypeError("port is expected as an int")
connection = ctypes.c_void_p(CTaosInterface.libtaos.taos_connect(
_host, _user, _password, _db, _port))
if connection.value is None:
print('connect to TDengine failed')
raise ConnectionError("connect to TDengine failed")
# sys.exit(1)
# else:
# print('connect to TDengine success')
return connection
@staticmethod
def close(connection):
'''Close the TDengine handle
'''
CTaosInterface.libtaos.taos_close(connection)
#print('connection is closed')
@staticmethod
def query(connection, sql):
'''Run SQL
@sql: str, sql string to run
@rtype: 0 on success and -1 on failure
'''
try:
return CTaosInterface.libtaos.taos_query(
connection, ctypes.c_char_p(sql.encode('utf-8')))
except AttributeError:
raise AttributeError("sql is expected as a string")
# finally:
# CTaosInterface.libtaos.close(connection)
@staticmethod
def affectedRows(result):
"""The affected rows after runing query
"""
return CTaosInterface.libtaos.taos_affected_rows(result)
@staticmethod
def subscribe(connection, restart, topic, sql, interval):
"""Create a subscription
@restart boolean,
@sql string, sql statement for data query, must be a 'select' statement.
@topic string, name of this subscription
"""
return ctypes.c_void_p(CTaosInterface.libtaos.taos_subscribe(
connection,
1 if restart else 0,
ctypes.c_char_p(topic.encode('utf-8')),
ctypes.c_char_p(sql.encode('utf-8')),
None,
None,
interval))
@staticmethod
def consume(sub):
"""Consume data of a subscription
"""
result = ctypes.c_void_p(CTaosInterface.libtaos.taos_consume(sub))
fields = []
pfields = CTaosInterface.fetchFields(result)
for i in range(CTaosInterface.libtaos.taos_num_fields(result)):
fields.append({'name': pfields[i].name.decode('utf-8'),
'bytes': pfields[i].bytes,
'type': ord(pfields[i].type)})
return result, fields
@staticmethod
def unsubscribe(sub, keepProgress):
"""Cancel a subscription
"""
CTaosInterface.libtaos.taos_unsubscribe(sub, 1 if keepProgress else 0)
@staticmethod
def useResult(result):
'''Use result after calling self.query
'''
fields = []
pfields = CTaosInterface.fetchFields(result)
for i in range(CTaosInterface.fieldsCount(result)):
fields.append({'name': pfields[i].name.decode('utf-8'),
'bytes': pfields[i].bytes,
'type': ord(pfields[i].type)})
return fields
@staticmethod
def fetchBlock(result, fields):
pblock = ctypes.c_void_p(0)
num_of_rows = CTaosInterface.libtaos.taos_fetch_block(
result, ctypes.byref(pblock))
if num_of_rows == 0:
return None, 0
isMicro = (CTaosInterface.libtaos.taos_result_precision(
result) == FieldType.C_TIMESTAMP_MICRO)
blocks = [None] * len(fields)
fieldL = CTaosInterface.libtaos.taos_fetch_lengths(result)
fieldLen = [
ele for ele in ctypes.cast(
fieldL, ctypes.POINTER(
ctypes.c_int))[
:len(fields)]]
for i in range(len(fields)):
data = ctypes.cast(pblock, ctypes.POINTER(ctypes.c_void_p))[i]
if fields[i]['type'] not in _CONVERT_FUNC_BLOCK:
raise DatabaseError("Invalid data type returned from database")
blocks[i] = _CONVERT_FUNC_BLOCK[fields[i]['type']](
data, num_of_rows, fieldLen[i], isMicro)
return blocks, abs(num_of_rows)
@staticmethod
def fetchRow(result, fields):
pblock = ctypes.c_void_p(0)
pblock = CTaosInterface.libtaos.taos_fetch_row(result)
if pblock:
num_of_rows = 1
isMicro = (CTaosInterface.libtaos.taos_result_precision(
result) == FieldType.C_TIMESTAMP_MICRO)
blocks = [None] * len(fields)
fieldL = CTaosInterface.libtaos.taos_fetch_lengths(result)
fieldLen = [
ele for ele in ctypes.cast(
fieldL, ctypes.POINTER(
ctypes.c_int))[
:len(fields)]]
for i in range(len(fields)):
data = ctypes.cast(pblock, ctypes.POINTER(ctypes.c_void_p))[i]
if fields[i]['type'] not in _CONVERT_FUNC:
raise DatabaseError(
"Invalid data type returned from database")
if data is None:
blocks[i] = [None]
else:
blocks[i] = _CONVERT_FUNC[fields[i]['type']](
data, num_of_rows, fieldLen[i], isMicro)
else:
return None, 0
return blocks, abs(num_of_rows)
@staticmethod
def freeResult(result):
CTaosInterface.libtaos.taos_free_result(result)
result.value = None
@staticmethod
def fieldsCount(result):
return CTaosInterface.libtaos.taos_field_count(result)
@staticmethod
def fetchFields(result):
return CTaosInterface.libtaos.taos_fetch_fields(result)
# @staticmethod
# def fetchRow(result, fields):
# l = []
# row = CTaosInterface.libtaos.taos_fetch_row(result)
# if not row:
# return None
# for i in range(len(fields)):
# l.append(CTaosInterface.getDataValue(
# row[i], fields[i]['type'], fields[i]['bytes']))
# return tuple(l)
# @staticmethod
# def getDataValue(data, dtype, byte):
# '''
# '''
# if not data:
# return None
# if (dtype == CTaosInterface.TSDB_DATA_TYPE_BOOL):
# return ctypes.cast(data, ctypes.POINTER(ctypes.c_bool))[0]
# elif (dtype == CTaosInterface.TSDB_DATA_TYPE_TINYINT):
# return ctypes.cast(data, ctypes.POINTER(ctypes.c_byte))[0]
# elif (dtype == CTaosInterface.TSDB_DATA_TYPE_SMALLINT):
# return ctypes.cast(data, ctypes.POINTER(ctypes.c_short))[0]
# elif (dtype == CTaosInterface.TSDB_DATA_TYPE_INT):
# return ctypes.cast(data, ctypes.POINTER(ctypes.c_int))[0]
# elif (dtype == CTaosInterface.TSDB_DATA_TYPE_BIGINT):
# return ctypes.cast(data, ctypes.POINTER(ctypes.c_int64))[0]
# elif (dtype == CTaosInterface.TSDB_DATA_TYPE_FLOAT):
# return ctypes.cast(data, ctypes.POINTER(ctypes.c_float))[0]
# elif (dtype == CTaosInterface.TSDB_DATA_TYPE_DOUBLE):
# return ctypes.cast(data, ctypes.POINTER(ctypes.c_double))[0]
# elif (dtype == CTaosInterface.TSDB_DATA_TYPE_BINARY):
# return (ctypes.cast(data, ctypes.POINTER(ctypes.c_char))[0:byte]).rstrip('\x00')
# elif (dtype == CTaosInterface.TSDB_DATA_TYPE_TIMESTAMP):
# return ctypes.cast(data, ctypes.POINTER(ctypes.c_int64))[0]
# elif (dtype == CTaosInterface.TSDB_DATA_TYPE_NCHAR):
# return (ctypes.cast(data, ctypes.c_char_p).value).rstrip('\x00')
@staticmethod
def errno(result):
"""Return the error number.
"""
return CTaosInterface.libtaos.taos_errno(result)
@staticmethod
def errStr(result):
"""Return the error styring
"""
return CTaosInterface.libtaos.taos_errstr(result).decode('utf-8')
if __name__ == '__main__':
cinter = CTaosInterface()
conn = cinter.connect()
result = cinter.query(conn, 'show databases')
print('Query Affected rows: {}'.format(cinter.affectedRows(result)))
fields = CTaosInterface.useResult(result)
data, num_of_rows = CTaosInterface.fetchBlock(result, fields)
print(data)
cinter.freeResult(result)
cinter.close(conn)
src/connector/python/windows/python2/taos/connection.py 已删除 100644 → 0
浏览文件 @ 398397bc
from .cursor import TDengineCursor
from .subscription import TDengineSubscription
from .cinterface import CTaosInterface
class TDengineConnection(object):
""" TDengine connection object
"""
def __init__(self, *args, **kwargs):
self._conn = None
self._host = None
self._user = "root"
self._password = "taosdata"
self._database = None
self._port = 0
self._config = None
self._chandle = None
if len(kwargs) > 0:
self.config(**kwargs)
def config(self, **kwargs):
# host
if 'host' in kwargs:
self._host = kwargs['host']
# user
if 'user' in kwargs:
self._user = kwargs['user']
# password
if 'password' in kwargs:
self._password = kwargs['password']
# database
if 'database' in kwargs:
self._database = kwargs['database']
# port
if 'port' in kwargs:
self._port = kwargs['port']
# config
if 'config' in kwargs:
self._config = kwargs['config']
self._chandle = CTaosInterface(self._config)
self._conn = self._chandle.connect(
self._host,
self._user,
self._password,
self._database,
self._port)
def close(self):
"""Close current connection.
"""
return CTaosInterface.close(self._conn)
def subscribe(self, restart, topic, sql, interval):
"""Create a subscription.
"""
if self._conn is None:
return None
sub = CTaosInterface.subscribe(
self._conn, restart, topic, sql, interval)
return TDengineSubscription(sub)
def cursor(self):
"""Return a new Cursor object using the connection.
"""
return TDengineCursor(self)
def commit(self):
"""Commit any pending transaction to the database.
Since TDengine do not support transactions, the implement is void functionality.
"""
pass
def rollback(self):
"""Void functionality
"""
pass
def clear_result_set(self):
"""Clear unused result set on this connection.
"""
pass
if __name__ == "__main__":
conn = TDengineConnection(host='192.168.1.107')
conn.close()
print("Hello world")
src/connector/python/windows/python2/taos/constants.py 已删除 100644 → 0
浏览文件 @ 398397bc
"""Constants in TDengine python
"""
from .dbapi import *
class FieldType(object):
"""TDengine Field Types
"""
# type_code
C_NULL = 0
C_BOOL = 1
C_TINYINT = 2
C_SMALLINT = 3
C_INT = 4
C_BIGINT = 5
C_FLOAT = 6
C_DOUBLE = 7
C_BINARY = 8
C_TIMESTAMP = 9
C_NCHAR = 10
C_TINYINT_UNSIGNED = 11
C_SMALLINT_UNSIGNED = 12
C_INT_UNSIGNED = 13
C_BIGINT_UNSIGNED = 14
# NULL value definition
# NOTE: These values should change according to C definition in tsdb.h
C_BOOL_NULL = 0x02
C_TINYINT_NULL = -128
C_TINYINT_UNSIGNED_NULL = 255
C_SMALLINT_NULL = -32768
C_SMALLINT_UNSIGNED_NULL = 65535
C_INT_NULL = -2147483648
C_INT_UNSIGNED_NULL = 4294967295
C_BIGINT_NULL = -9223372036854775808
C_BIGINT_UNSIGNED_NULL = 18446744073709551615
C_FLOAT_NULL = float('nan')
C_DOUBLE_NULL = float('nan')
C_BINARY_NULL = bytearray([int('0xff', 16)])
# Time precision definition
C_TIMESTAMP_MILLI = 0
C_TIMESTAMP_MICRO = 1
src/connector/python/windows/python2/taos/cursor.py 已删除 100644 → 0
浏览文件 @ 398397bc
from .cinterface import CTaosInterface
from .error import *
from .constants import FieldType
# querySeqNum = 0
class TDengineCursor(object):
"""Database cursor which is used to manage the context of a fetch operation.
Attributes:
.description: Read-only attribute consists of 7-item sequences:
> name (mondatory)
> type_code (mondatory)
> display_size
> internal_size
> precision
> scale
> null_ok
This attribute will be None for operations that do not return rows or
if the cursor has not had an operation invoked via the .execute*() method yet.
.rowcount:This read-only attribute specifies the number of rows that the last
.execute*() produced (for DQL statements like SELECT) or affected
"""
def __init__(self, connection=None):
self._description = []
self._rowcount = -1
self._connection = None
self._result = None
self._fields = None
self._block = None
self._block_rows = -1
self._block_iter = 0
self._affected_rows = 0
self._logfile = ""
if connection is not None:
self._connection = connection
def __iter__(self):
return self
def __next__(self):
if self._result is None or self._fields is None:
raise OperationalError("Invalid use of fetch iterator")
if self._block_rows <= self._block_iter:
block, self._block_rows = CTaosInterface.fetchRow(
self._result, self._fields)
if self._block_rows == 0:
raise StopIteration
self._block = list(map(tuple, zip(*block)))
self._block_iter = 0
data = self._block[self._block_iter]
self._block_iter += 1
return data
@property
def description(self):
"""Return the description of the object.
"""
return self._description
@property
def rowcount(self):
"""Return the rowcount of the object
"""
return self._rowcount
@property
def affected_rows(self):
"""Return the affected_rows of the object
"""
return self._affected_rows
def callproc(self, procname, *args):
"""Call a stored database procedure with the given name.
Void functionality since no stored procedures.
"""
pass
def close(self):
"""Close the cursor.
"""
if self._connection is None:
return False
self._reset_result()
self._connection = None
return True
def execute(self, operation, params=None):
"""Prepare and execute a database operation (query or command).
"""
if not operation:
return None
if not self._connection:
# TODO : change the exception raised here
raise ProgrammingError("Cursor is not connected")
self._reset_result()
stmt = operation
if params is not None:
pass
self._result = CTaosInterface.query(self._connection._conn, stmt)
errno = CTaosInterface.libtaos.taos_errno(self._result)
if errno == 0:
if CTaosInterface.fieldsCount(self._result) == 0:
self._affected_rows += CTaosInterface.affectedRows(
self._result)
return CTaosInterface.affectedRows(self._result)
else:
self._fields = CTaosInterface.useResult(self._result)
return self._handle_result()
else:
raise ProgrammingError(CTaosInterface.errStr(self._result), errno)
def executemany(self, operation, seq_of_parameters):
"""Prepare a database operation (query or command) and then execute it against all parameter sequences or mappings found in the sequence seq_of_parameters.
"""
pass
def fetchone(self):
"""Fetch the next row of a query result set, returning a single sequence, or None when no more data is available.
"""
pass
def fetchmany(self):
pass
def fetchall_row(self):
"""Fetch all (remaining) rows of a query result, returning them as a sequence of sequences (e.g. a list of tuples). Note that the cursor's arraysize attribute can affect the performance of this operation.
"""
if self._result is None or self._fields is None:
raise OperationalError("Invalid use of fetchall")
buffer = [[] for i in range(len(self._fields))]
self._rowcount = 0
while True:
block, num_of_fields = CTaosInterface.fetchRow(
self._result, self._fields)
errno = CTaosInterface.libtaos.taos_errno(self._result)
if errno != 0:
raise ProgrammingError(
CTaosInterface.errStr(
self._result), errno)
if num_of_fields == 0:
break
self._rowcount += num_of_fields
for i in range(len(self._fields)):
buffer[i].extend(block[i])
return list(map(tuple, zip(*buffer)))
def fetchall(self):
if self._result is None or self._fields is None:
raise OperationalError("Invalid use of fetchall")
buffer = [[] for i in range(len(self._fields))]
self._rowcount = 0
while True:
block, num_of_fields = CTaosInterface.fetchBlock(
self._result, self._fields)
errno = CTaosInterface.libtaos.taos_errno(self._result)
if errno != 0:
raise ProgrammingError(
CTaosInterface.errStr(
self._result), errno)
if num_of_fields == 0:
break
self._rowcount += num_of_fields
for i in range(len(self._fields)):
buffer[i].extend(block[i])
return list(map(tuple, zip(*buffer)))
def nextset(self):
"""
"""
pass
def setinputsize(self, sizes):
pass
def setutputsize(self, size, column=None):
pass
def _reset_result(self):
"""Reset the result to unused version.
"""
self._description = []
self._rowcount = -1
if self._result is not None:
CTaosInterface.freeResult(self._result)
self._result = None
self._fields = None
self._block = None
self._block_rows = -1
self._block_iter = 0
self._affected_rows = 0
def _handle_result(self):
"""Handle the return result from query.
"""
self._description = []
for ele in self._fields:
self._description.append(
(ele['name'], ele['type'], None, None, None, None, False))
return self._result
src/connector/python/windows/python2/taos/dbapi.py 已删除 100644 → 0
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"""Type Objects and Constructors.
"""
import time
import datetime
class DBAPITypeObject(object):
def __init__(self, *values):
self.values = values
def __com__(self, other):
if other in self.values:
return 0
if other < self.values:
return 1
else:
return -1
Date = datetime.date
Time = datetime.time
Timestamp = datetime.datetime
def DataFromTicks(ticks):
return Date(*time.localtime(ticks)[:3])
def TimeFromTicks(ticks):
return Time(*time.localtime(ticks)[3:6])
def TimestampFromTicks(ticks):
return Timestamp(*time.localtime(ticks)[:6])
Binary = bytes
# STRING = DBAPITypeObject(*constants.FieldType.get_string_types())
# BINARY = DBAPITypeObject(*constants.FieldType.get_binary_types())
# NUMBER = BAPITypeObject(*constants.FieldType.get_number_types())
# DATETIME = DBAPITypeObject(*constants.FieldType.get_timestamp_types())
# ROWID = DBAPITypeObject()
src/connector/python/windows/python2/taos/error.py 已删除 100644 → 0
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"""Python exceptions
"""
class Error(Exception):
def __init__(self, msg=None, errno=None):
self.msg = msg
self._full_msg = self.msg
self.errno = errno
def __str__(self):
return self._full_msg
class Warning(Exception):
"""Exception raised for important warnings like data truncations while inserting.
"""
pass
class InterfaceError(Error):
"""Exception raised for errors that are related to the database interface rather than the database itself.
"""
pass
class DatabaseError(Error):
"""Exception raised for errors that are related to the database.
"""
pass
class DataError(DatabaseError):
"""Exception raised for errors that are due to problems with the processed data like division by zero, numeric value out of range.
"""
pass
class OperationalError(DatabaseError):
"""Exception raised for errors that are related to the database's operation and not necessarily under the control of the programmer
"""
pass
class IntegrityError(DatabaseError):
"""Exception raised when the relational integrity of the database is affected.
"""
pass
class InternalError(DatabaseError):
"""Exception raised when the database encounters an internal error.
"""
pass
class ProgrammingError(DatabaseError):
"""Exception raised for programming errors.
"""
pass
class NotSupportedError(DatabaseError):
"""Exception raised in case a method or database API was used which is not supported by the database,.
"""
pass
src/connector/python/windows/python2/taos/subscription.py 已删除 100644 → 0
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from .cinterface import CTaosInterface
from .error import *
class TDengineSubscription(object):
"""TDengine subscription object
"""
def __init__(self, sub):
self._sub = sub
def consume(self):
"""Consume rows of a subscription
"""
if self._sub is None:
raise OperationalError("Invalid use of consume")
result, fields = CTaosInterface.consume(self._sub)
buffer = [[] for i in range(len(fields))]
while True:
block, num_of_fields = CTaosInterface.fetchBlock(result, fields)
if num_of_fields == 0:
break
for i in range(len(fields)):
buffer[i].extend(block[i])
self.fields = fields
return list(map(tuple, zip(*buffer)))
def close(self, keepProgress=True):
"""Close the Subscription.
"""
if self._sub is None:
return False
CTaosInterface.unsubscribe(self._sub, keepProgress)
return True
if __name__ == '__main__':
from .connection import TDengineConnection
conn = TDengineConnection(
host="127.0.0.1",
user="root",
password="taosdata",
database="test")
# Generate a cursor object to run SQL commands
sub = conn.subscribe(True, "test", "select * from meters;", 1000)
for i in range(0, 10):
data = sub.consume()
for d in data:
print(d)
sub.close()
conn.close()
src/connector/python/windows/python3/LICENSE 已删除 100644 → 0
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Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
This program is free software: you can use, redistribute, and/or modify
it under the terms of the GNU Affero General Public License, version 3
or later ("AGPL"), as published by the Free Software Foundation.
This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
src/connector/python/windows/python3/README.md 已删除 100644 → 0
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# TDengine python client interface
\ No newline at end of file
src/connector/python/windows/python3/setup.py 已删除 100644 → 0
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import setuptools
with open("README.md", "r") as fh:
long_description = fh.read()
setuptools.setup(
name="taos",
version="2.0.9",
author="Taosdata Inc.",
author_email="support@taosdata.com",
description="TDengine python client package",
long_description=long_description,
long_description_content_type="text/markdown",
url="https://github.com/pypa/sampleproject",
packages=setuptools.find_packages(),
classifiers=[
"Programming Language :: Python :: 3",
"Operating System :: Windows",
],
)
src/connector/python/windows/python3/taos/__init__.py 已删除 100644 → 0
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from .connection import TDengineConnection
from .cursor import TDengineCursor
# Globals
threadsafety = 0
paramstyle = 'pyformat'
__all__ = ['connection', 'cursor']
def connect(*args, **kwargs):
""" Function to return a TDengine connector object
Current supporting keyword parameters:
@dsn: Data source name as string
@user: Username as string(optional)
@password: Password as string(optional)
@host: Hostname(optional)
@database: Database name(optional)
@rtype: TDengineConnector
"""
return TDengineConnection(*args, **kwargs)
src/connector/python/windows/python3/taos/cinterface.py 已删除 100644 → 0
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import ctypes
from .constants import FieldType
from .error import *
import math
import datetime
def _convert_millisecond_to_datetime(milli):
return datetime.datetime.fromtimestamp(milli / 1000.0)
def _convert_microsecond_to_datetime(micro):
return datetime.datetime.fromtimestamp(micro / 1000000.0)
def _crow_timestamp_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C bool row to python row
"""
_timestamp_converter = _convert_millisecond_to_datetime
if micro:
_timestamp_converter = _convert_microsecond_to_datetime
if num_of_rows > 0:
return [
None if ele == FieldType.C_BIGINT_NULL else _timestamp_converter(ele) for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_int64))[
:abs(num_of_rows)]]
else:
return [
None if ele == FieldType.C_BIGINT_NULL else _timestamp_converter(ele) for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_int64))[
:abs(num_of_rows)]]
def _crow_bool_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C bool row to python row
"""
if num_of_rows > 0:
return [
None if ele == FieldType.C_BOOL_NULL else bool(ele) for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_byte))[
:abs(num_of_rows)]]
else:
return [
None if ele == FieldType.C_BOOL_NULL else bool(ele) for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_bool))[
:abs(num_of_rows)]]
def _crow_tinyint_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C tinyint row to python row
"""
if num_of_rows > 0:
return [None if ele == FieldType.C_TINYINT_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(ctypes.c_byte))[:abs(num_of_rows)]]
else:
return [None if ele == FieldType.C_TINYINT_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(ctypes.c_byte))[:abs(num_of_rows)]]
def _crow_tinyint_unsigned_to_python(
data,
num_of_rows,
nbytes=None,
micro=False):
"""Function to convert C tinyint row to python row
"""
if num_of_rows > 0:
return [
None if ele == FieldType.C_TINYINT_UNSIGNED_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_ubyte))[
:abs(num_of_rows)]]
else:
return [
None if ele == FieldType.C_TINYINT_UNSIGNED_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_ubyte))[
:abs(num_of_rows)]]
def _crow_smallint_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C smallint row to python row
"""
if num_of_rows > 0:
return [
None if ele == FieldType.C_SMALLINT_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_short))[
:abs(num_of_rows)]]
else:
return [
None if ele == FieldType.C_SMALLINT_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_short))[
:abs(num_of_rows)]]
def _crow_smallint_unsigned_to_python(
data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C smallint row to python row
"""
if num_of_rows > 0:
return [
None if ele == FieldType.C_SMALLINT_UNSIGNED_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_ushort))[
:abs(num_of_rows)]]
else:
return [
None if ele == FieldType.C_SMALLINT_UNSIGNED_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_ushort))[
:abs(num_of_rows)]]
def _crow_int_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C int row to python row
"""
if num_of_rows > 0:
return [None if ele == FieldType.C_INT_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(ctypes.c_int))[:abs(num_of_rows)]]
else:
return [None if ele == FieldType.C_INT_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(ctypes.c_int))[:abs(num_of_rows)]]
def _crow_int_unsigned_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C int row to python row
"""
if num_of_rows > 0:
return [
None if ele == FieldType.C_INT_UNSIGNED_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_uint))[
:abs(num_of_rows)]]
else:
return [
None if ele == FieldType.C_INT_UNSIGNED_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_uint))[
:abs(num_of_rows)]]
def _crow_bigint_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C bigint row to python row
"""
if num_of_rows > 0:
return [None if ele == FieldType.C_BIGINT_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(ctypes.c_int64))[:abs(num_of_rows)]]
else:
return [None if ele == FieldType.C_BIGINT_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(ctypes.c_int64))[:abs(num_of_rows)]]
def _crow_bigint_unsigned_to_python(
data,
num_of_rows,
nbytes=None,
micro=False):
"""Function to convert C bigint row to python row
"""
if num_of_rows > 0:
return [
None if ele == FieldType.C_BIGINT_UNSIGNED_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_uint64))[
:abs(num_of_rows)]]
else:
return [
None if ele == FieldType.C_BIGINT_UNSIGNED_NULL else ele for ele in ctypes.cast(
data, ctypes.POINTER(
ctypes.c_uint64))[
:abs(num_of_rows)]]
def _crow_float_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C float row to python row
"""
if num_of_rows > 0:
return [None if math.isnan(ele) else ele for ele in ctypes.cast(
data, ctypes.POINTER(ctypes.c_float))[:abs(num_of_rows)]]
else:
return [None if math.isnan(ele) else ele for ele in ctypes.cast(
data, ctypes.POINTER(ctypes.c_float))[:abs(num_of_rows)]]
def _crow_double_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C double row to python row
"""
if num_of_rows > 0:
return [None if math.isnan(ele) else ele for ele in ctypes.cast(
data, ctypes.POINTER(ctypes.c_double))[:abs(num_of_rows)]]
else:
return [None if math.isnan(ele) else ele for ele in ctypes.cast(
data, ctypes.POINTER(ctypes.c_double))[:abs(num_of_rows)]]
def _crow_binary_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C binary row to python row
"""
assert(nbytes is not None)
if num_of_rows > 0:
return [None if ele.value[0:1] == FieldType.C_BINARY_NULL else ele.value.decode(
'utf-8') for ele in (ctypes.cast(data, ctypes.POINTER(ctypes.c_char * nbytes)))[:abs(num_of_rows)]]
else:
return [None if ele.value[0:1] == FieldType.C_BINARY_NULL else ele.value.decode(
'utf-8') for ele in (ctypes.cast(data, ctypes.POINTER(ctypes.c_char * nbytes)))[:abs(num_of_rows)]]
def _crow_nchar_to_python(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C nchar row to python row
"""
assert(nbytes is not None)
res = []
for i in range(abs(num_of_rows)):
try:
if num_of_rows >= 0:
tmpstr = ctypes.c_char_p(data)
res.append(tmpstr.value.decode())
else:
res.append((ctypes.cast(data + nbytes * i,
ctypes.POINTER(ctypes.c_wchar * (nbytes // 4))))[0].value)
except ValueError:
res.append(None)
return res
def _crow_binary_to_python_block(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C binary row to python row
"""
assert(nbytes is not None)
res = []
if num_of_rows > 0:
for i in range(abs(num_of_rows)):
try:
rbyte = ctypes.cast(
data + nbytes * i,
ctypes.POINTER(
ctypes.c_short))[
:1].pop()
tmpstr = ctypes.c_char_p(data + nbytes * i + 2)
res.append(tmpstr.value.decode()[0:rbyte])
except ValueError:
res.append(None)
else:
for i in range(abs(num_of_rows)):
try:
rbyte = ctypes.cast(
data + nbytes * i,
ctypes.POINTER(
ctypes.c_short))[
:1].pop()
tmpstr = ctypes.c_char_p(data + nbytes * i + 2)
res.append(tmpstr.value.decode()[0:rbyte])
except ValueError:
res.append(None)
return res
def _crow_nchar_to_python_block(data, num_of_rows, nbytes=None, micro=False):
"""Function to convert C nchar row to python row
"""
assert(nbytes is not None)
res = []
if num_of_rows >= 0:
for i in range(abs(num_of_rows)):
try:
tmpstr = ctypes.c_char_p(data + nbytes * i + 2)
res.append(tmpstr.value.decode())
except ValueError:
res.append(None)
else:
for i in range(abs(num_of_rows)):
try:
res.append((ctypes.cast(data + nbytes * i + 2,
ctypes.POINTER(ctypes.c_wchar * (nbytes // 4))))[0].value)
except ValueError:
res.append(None)
return res
_CONVERT_FUNC = {
FieldType.C_BOOL: _crow_bool_to_python,
FieldType.C_TINYINT: _crow_tinyint_to_python,
FieldType.C_SMALLINT: _crow_smallint_to_python,
FieldType.C_INT: _crow_int_to_python,
FieldType.C_BIGINT: _crow_bigint_to_python,
FieldType.C_FLOAT: _crow_float_to_python,
FieldType.C_DOUBLE: _crow_double_to_python,
FieldType.C_BINARY: _crow_binary_to_python,
FieldType.C_TIMESTAMP: _crow_timestamp_to_python,
FieldType.C_NCHAR: _crow_nchar_to_python,
FieldType.C_TINYINT_UNSIGNED: _crow_tinyint_unsigned_to_python,
FieldType.C_SMALLINT_UNSIGNED: _crow_smallint_unsigned_to_python,
FieldType.C_INT_UNSIGNED: _crow_int_unsigned_to_python,
FieldType.C_BIGINT_UNSIGNED: _crow_bigint_unsigned_to_python
}
_CONVERT_FUNC_BLOCK = {
FieldType.C_BOOL: _crow_bool_to_python,
FieldType.C_TINYINT: _crow_tinyint_to_python,
FieldType.C_SMALLINT: _crow_smallint_to_python,
FieldType.C_INT: _crow_int_to_python,
FieldType.C_BIGINT: _crow_bigint_to_python,
FieldType.C_FLOAT: _crow_float_to_python,
FieldType.C_DOUBLE: _crow_double_to_python,
FieldType.C_BINARY: _crow_binary_to_python_block,
FieldType.C_TIMESTAMP: _crow_timestamp_to_python,
FieldType.C_NCHAR: _crow_nchar_to_python_block,
FieldType.C_TINYINT_UNSIGNED: _crow_tinyint_unsigned_to_python,
FieldType.C_SMALLINT_UNSIGNED: _crow_smallint_unsigned_to_python,
FieldType.C_INT_UNSIGNED: _crow_int_unsigned_to_python,
FieldType.C_BIGINT_UNSIGNED: _crow_bigint_unsigned_to_python
}
# Corresponding TAOS_FIELD structure in C
class TaosField(ctypes.Structure):
_fields_ = [('name', ctypes.c_char * 65),
('type', ctypes.c_char),
('bytes', ctypes.c_short)]
# C interface class
class CTaosInterface(object):
libtaos = ctypes.windll.LoadLibrary('taos')
libtaos.taos_fetch_fields.restype = ctypes.POINTER(TaosField)
libtaos.taos_init.restype = None
libtaos.taos_connect.restype = ctypes.c_void_p
#libtaos.taos_use_result.restype = ctypes.c_void_p
libtaos.taos_fetch_row.restype = ctypes.POINTER(ctypes.c_void_p)
libtaos.taos_errstr.restype = ctypes.c_char_p
libtaos.taos_subscribe.restype = ctypes.c_void_p
libtaos.taos_consume.restype = ctypes.c_void_p
libtaos.taos_fetch_lengths.restype = ctypes.c_void_p
libtaos.taos_free_result.restype = None
libtaos.taos_errno.restype = ctypes.c_int
libtaos.taos_query.restype = ctypes.POINTER(ctypes.c_void_p)
def __init__(self, config=None):
'''
Function to initialize the class
@host : str, hostname to connect
@user : str, username to connect to server
@password : str, password to connect to server
@db : str, default db to use when log in
@config : str, config directory
@rtype : None
'''
if config is None:
self._config = ctypes.c_char_p(None)
else:
try:
self._config = ctypes.c_char_p(config.encode('utf-8'))
except AttributeError:
raise AttributeError("config is expected as a str")
if config is not None:
CTaosInterface.libtaos.taos_options(3, self._config)
CTaosInterface.libtaos.taos_init()
@property
def config(self):
""" Get current config
"""
return self._config
def connect(
self,
host=None,
user="root",
password="taosdata",
db=None,
port=0):
'''
Function to connect to server
@rtype: c_void_p, TDengine handle
'''
# host
try:
_host = ctypes.c_char_p(host.encode(
"utf-8")) if host is not None else ctypes.c_char_p(None)
except AttributeError:
raise AttributeError("host is expected as a str")
# user
try:
_user = ctypes.c_char_p(user.encode("utf-8"))
except AttributeError:
raise AttributeError("user is expected as a str")
# password
try:
_password = ctypes.c_char_p(password.encode("utf-8"))
except AttributeError:
raise AttributeError("password is expected as a str")
# db
try:
_db = ctypes.c_char_p(
db.encode("utf-8")) if db is not None else ctypes.c_char_p(None)
except AttributeError:
raise AttributeError("db is expected as a str")
# port
try:
_port = ctypes.c_int(port)
except TypeError:
raise TypeError("port is expected as an int")
connection = ctypes.c_void_p(CTaosInterface.libtaos.taos_connect(
_host, _user, _password, _db, _port))
if connection.value is None:
print('connect to TDengine failed')
raise ConnectionError("connect to TDengine failed")
# sys.exit(1)
# else:
# print('connect to TDengine success')
return connection
@staticmethod
def close(connection):
'''Close the TDengine handle
'''
CTaosInterface.libtaos.taos_close(connection)
#print('connection is closed')
@staticmethod
def query(connection, sql):
'''Run SQL
@sql: str, sql string to run
@rtype: 0 on success and -1 on failure
'''
try:
return CTaosInterface.libtaos.taos_query(
connection, ctypes.c_char_p(sql.encode('utf-8')))
except AttributeError:
raise AttributeError("sql is expected as a string")
# finally:
# CTaosInterface.libtaos.close(connection)
@staticmethod
def affectedRows(result):
"""The affected rows after runing query
"""
return CTaosInterface.libtaos.taos_affected_rows(result)
@staticmethod
def subscribe(connection, restart, topic, sql, interval):
"""Create a subscription
@restart boolean,
@sql string, sql statement for data query, must be a 'select' statement.
@topic string, name of this subscription
"""
return ctypes.c_void_p(CTaosInterface.libtaos.taos_subscribe(
connection,
1 if restart else 0,
ctypes.c_char_p(topic.encode('utf-8')),
ctypes.c_char_p(sql.encode('utf-8')),
None,
None,
interval))
@staticmethod
def consume(sub):
"""Consume data of a subscription
"""
result = ctypes.c_void_p(CTaosInterface.libtaos.taos_consume(sub))
fields = []
pfields = CTaosInterface.fetchFields(result)
for i in range(CTaosInterface.libtaos.taos_num_fields(result)):
fields.append({'name': pfields[i].name.decode('utf-8'),
'bytes': pfields[i].bytes,
'type': ord(pfields[i].type)})
return result, fields
@staticmethod
def unsubscribe(sub, keepProgress):
"""Cancel a subscription
"""
CTaosInterface.libtaos.taos_unsubscribe(sub, 1 if keepProgress else 0)
@staticmethod
def useResult(result):
'''Use result after calling self.query
'''
fields = []
pfields = CTaosInterface.fetchFields(result)
for i in range(CTaosInterface.fieldsCount(result)):
fields.append({'name': pfields[i].name.decode('utf-8'),
'bytes': pfields[i].bytes,
'type': ord(pfields[i].type)})
return fields
@staticmethod
def fetchBlock(result, fields):
pblock = ctypes.c_void_p(0)
num_of_rows = CTaosInterface.libtaos.taos_fetch_block(
result, ctypes.byref(pblock))
if num_of_rows == 0:
return None, 0
isMicro = (CTaosInterface.libtaos.taos_result_precision(
result) == FieldType.C_TIMESTAMP_MICRO)
blocks = [None] * len(fields)
fieldL = CTaosInterface.libtaos.taos_fetch_lengths(result)
fieldLen = [
ele for ele in ctypes.cast(
fieldL, ctypes.POINTER(
ctypes.c_int))[
:len(fields)]]
for i in range(len(fields)):
data = ctypes.cast(pblock, ctypes.POINTER(ctypes.c_void_p))[i]
if fields[i]['type'] not in _CONVERT_FUNC_BLOCK:
raise DatabaseError("Invalid data type returned from database")
blocks[i] = _CONVERT_FUNC_BLOCK[fields[i]['type']](
data, num_of_rows, fieldLen[i], isMicro)
return blocks, abs(num_of_rows)
@staticmethod
def fetchRow(result, fields):
pblock = ctypes.c_void_p(0)
pblock = CTaosInterface.libtaos.taos_fetch_row(result)
if pblock:
num_of_rows = 1
isMicro = (CTaosInterface.libtaos.taos_result_precision(
result) == FieldType.C_TIMESTAMP_MICRO)
blocks = [None] * len(fields)
fieldL = CTaosInterface.libtaos.taos_fetch_lengths(result)
fieldLen = [
ele for ele in ctypes.cast(
fieldL, ctypes.POINTER(
ctypes.c_int))[
:len(fields)]]
for i in range(len(fields)):
data = ctypes.cast(pblock, ctypes.POINTER(ctypes.c_void_p))[i]
if fields[i]['type'] not in _CONVERT_FUNC:
raise DatabaseError(
"Invalid data type returned from database")
if data is None:
blocks[i] = [None]
else:
blocks[i] = _CONVERT_FUNC[fields[i]['type']](
data, num_of_rows, fieldLen[i], isMicro)
else:
return None, 0
return blocks, abs(num_of_rows)
@staticmethod
def freeResult(result):
CTaosInterface.libtaos.taos_free_result(result)
result.value = None
@staticmethod
def fieldsCount(result):
return CTaosInterface.libtaos.taos_field_count(result)
@staticmethod
def fetchFields(result):
return CTaosInterface.libtaos.taos_fetch_fields(result)
# @staticmethod
# def fetchRow(result, fields):
# l = []
# row = CTaosInterface.libtaos.taos_fetch_row(result)
# if not row:
# return None
# for i in range(len(fields)):
# l.append(CTaosInterface.getDataValue(
# row[i], fields[i]['type'], fields[i]['bytes']))
# return tuple(l)
# @staticmethod
# def getDataValue(data, dtype, byte):
# '''
# '''
# if not data:
# return None
# if (dtype == CTaosInterface.TSDB_DATA_TYPE_BOOL):
# return ctypes.cast(data, ctypes.POINTER(ctypes.c_bool))[0]
# elif (dtype == CTaosInterface.TSDB_DATA_TYPE_TINYINT):
# return ctypes.cast(data, ctypes.POINTER(ctypes.c_byte))[0]
# elif (dtype == CTaosInterface.TSDB_DATA_TYPE_SMALLINT):
# return ctypes.cast(data, ctypes.POINTER(ctypes.c_short))[0]
# elif (dtype == CTaosInterface.TSDB_DATA_TYPE_INT):
# return ctypes.cast(data, ctypes.POINTER(ctypes.c_int))[0]
# elif (dtype == CTaosInterface.TSDB_DATA_TYPE_BIGINT):
# return ctypes.cast(data, ctypes.POINTER(ctypes.c_int64))[0]
# elif (dtype == CTaosInterface.TSDB_DATA_TYPE_FLOAT):
# return ctypes.cast(data, ctypes.POINTER(ctypes.c_float))[0]
# elif (dtype == CTaosInterface.TSDB_DATA_TYPE_DOUBLE):
# return ctypes.cast(data, ctypes.POINTER(ctypes.c_double))[0]
# elif (dtype == CTaosInterface.TSDB_DATA_TYPE_BINARY):
# return (ctypes.cast(data, ctypes.POINTER(ctypes.c_char))[0:byte]).rstrip('\x00')
# elif (dtype == CTaosInterface.TSDB_DATA_TYPE_TIMESTAMP):
# return ctypes.cast(data, ctypes.POINTER(ctypes.c_int64))[0]
# elif (dtype == CTaosInterface.TSDB_DATA_TYPE_NCHAR):
# return (ctypes.cast(data, ctypes.c_char_p).value).rstrip('\x00')
@staticmethod
def errno(result):
"""Return the error number.
"""
return CTaosInterface.libtaos.taos_errno(result)
@staticmethod
def errStr(result):
"""Return the error styring
"""
return CTaosInterface.libtaos.taos_errstr(result).decode('utf-8')
if __name__ == '__main__':
cinter = CTaosInterface()
conn = cinter.connect()
result = cinter.query(conn, 'show databases')
print('Query Affected rows: {}'.format(cinter.affectedRows(result)))
fields = CTaosInterface.useResult(result)
data, num_of_rows = CTaosInterface.fetchBlock(result, fields)
print(data)
cinter.freeResult(result)
cinter.close(conn)
src/connector/python/windows/python3/taos/connection.py 已删除 100644 → 0
浏览文件 @ 398397bc
from .cursor import TDengineCursor
from .subscription import TDengineSubscription
from .cinterface import CTaosInterface
class TDengineConnection(object):
""" TDengine connection object
"""
def __init__(self, *args, **kwargs):
self._conn = None
self._host = None
self._user = "root"
self._password = "taosdata"
self._database = None
self._port = 0
self._config = None
self._chandle = None
if len(kwargs) > 0:
self.config(**kwargs)
def config(self, **kwargs):
# host
if 'host' in kwargs:
self._host = kwargs['host']
# user
if 'user' in kwargs:
self._user = kwargs['user']
# password
if 'password' in kwargs:
self._password = kwargs['password']
# database
if 'database' in kwargs:
self._database = kwargs['database']
# port
if 'port' in kwargs:
self._port = kwargs['port']
# config
if 'config' in kwargs:
self._config = kwargs['config']
self._chandle = CTaosInterface(self._config)
self._conn = self._chandle.connect(
self._host,
self._user,
self._password,
self._database,
self._port)
def close(self):
"""Close current connection.
"""
return CTaosInterface.close(self._conn)
def subscribe(self, restart, topic, sql, interval):
"""Create a subscription.
"""
if self._conn is None:
return None
sub = CTaosInterface.subscribe(
self._conn, restart, topic, sql, interval)
return TDengineSubscription(sub)
def cursor(self):
"""Return a new Cursor object using the connection.
"""
return TDengineCursor(self)
def commit(self):
"""Commit any pending transaction to the database.
Since TDengine do not support transactions, the implement is void functionality.
"""
pass
def rollback(self):
"""Void functionality
"""
pass
def clear_result_set(self):
"""Clear unused result set on this connection.
"""
pass
if __name__ == "__main__":
conn = TDengineConnection(host='192.168.1.107')
conn.close()
print("Hello world")
src/connector/python/windows/python3/taos/constants.py 已删除 100644 → 0
浏览文件 @ 398397bc
"""Constants in TDengine python
"""
from .dbapi import *
class FieldType(object):
"""TDengine Field Types
"""
# type_code
C_NULL = 0
C_BOOL = 1
C_TINYINT = 2
C_SMALLINT = 3
C_INT = 4
C_BIGINT = 5
C_FLOAT = 6
C_DOUBLE = 7
C_BINARY = 8
C_TIMESTAMP = 9
C_NCHAR = 10
C_TINYINT_UNSIGNED = 11
C_SMALLINT_UNSIGNED = 12
C_INT_UNSIGNED = 13
C_BIGINT_UNSIGNED = 14
# NULL value definition
# NOTE: These values should change according to C definition in tsdb.h
C_BOOL_NULL = 0x02
C_TINYINT_NULL = -128
C_TINYINT_UNSIGNED_NULL = 255
C_SMALLINT_NULL = -32768
C_SMALLINT_UNSIGNED_NULL = 65535
C_INT_NULL = -2147483648
C_INT_UNSIGNED_NULL = 4294967295
C_BIGINT_NULL = -9223372036854775808
C_BIGINT_UNSIGNED_NULL = 18446744073709551615
C_FLOAT_NULL = float('nan')
C_DOUBLE_NULL = float('nan')
C_BINARY_NULL = bytearray([int('0xff', 16)])
# Timestamp precision definition
C_TIMESTAMP_MILLI = 0
C_TIMESTAMP_MICRO = 1
src/connector/python/windows/python3/taos/cursor.py 已删除 100644 → 0
浏览文件 @ 398397bc
from .cinterface import CTaosInterface
from .error import *
from .constants import FieldType
# querySeqNum = 0
class TDengineCursor(object):
"""Database cursor which is used to manage the context of a fetch operation.
Attributes:
.description: Read-only attribute consists of 7-item sequences:
> name (mondatory)
> type_code (mondatory)
> display_size
> internal_size
> precision
> scale
> null_ok
This attribute will be None for operations that do not return rows or
if the cursor has not had an operation invoked via the .execute*() method yet.
.rowcount:This read-only attribute specifies the number of rows that the last
.execute*() produced (for DQL statements like SELECT) or affected
"""
def __init__(self, connection=None):
self._description = []
self._rowcount = -1
self._connection = None
self._result = None
self._fields = None
self._block = None
self._block_rows = -1
self._block_iter = 0
self._affected_rows = 0
self._logfile = ""
if connection is not None:
self._connection = connection
def __iter__(self):
return self
def __next__(self):
if self._result is None or self._fields is None:
raise OperationalError("Invalid use of fetch iterator")
if self._block_rows <= self._block_iter:
block, self._block_rows = CTaosInterface.fetchRow(
self._result, self._fields)
if self._block_rows == 0:
raise StopIteration
self._block = list(map(tuple, zip(*block)))
self._block_iter = 0
data = self._block[self._block_iter]
self._block_iter += 1
return data
@property
def description(self):
"""Return the description of the object.
"""
return self._description
@property
def rowcount(self):
"""Return the rowcount of the object
"""
return self._rowcount
@property
def affected_rows(self):
"""Return the affected_rows of the object
"""
return self._affected_rows
def callproc(self, procname, *args):
"""Call a stored database procedure with the given name.
Void functionality since no stored procedures.
"""
pass
def close(self):
"""Close the cursor.
"""
if self._connection is None:
return False
self._reset_result()
self._connection = None
return True
def execute(self, operation, params=None):
"""Prepare and execute a database operation (query or command).
"""
if not operation:
return None
if not self._connection:
# TODO : change the exception raised here
raise ProgrammingError("Cursor is not connected")
self._reset_result()
stmt = operation
if params is not None:
pass
self._result = CTaosInterface.query(self._connection._conn, stmt)
errno = CTaosInterface.libtaos.taos_errno(self._result)
if errno == 0:
if CTaosInterface.fieldsCount(self._result) == 0:
self._affected_rows += CTaosInterface.affectedRows(
self._result)
return CTaosInterface.affectedRows(self._result)
else:
self._fields = CTaosInterface.useResult(self._result)
return self._handle_result()
else:
raise ProgrammingError(CTaosInterface.errStr(self._result), errno)
def executemany(self, operation, seq_of_parameters):
"""Prepare a database operation (query or command) and then execute it against all parameter sequences or mappings found in the sequence seq_of_parameters.
"""
pass
def fetchone(self):
"""Fetch the next row of a query result set, returning a single sequence, or None when no more data is available.
"""
pass
def fetchmany(self):
pass
def fetchall_row(self):
"""Fetch all (remaining) rows of a query result, returning them as a sequence of sequences (e.g. a list of tuples). Note that the cursor's arraysize attribute can affect the performance of this operation.
"""
if self._result is None or self._fields is None:
raise OperationalError("Invalid use of fetchall")
buffer = [[] for i in range(len(self._fields))]
self._rowcount = 0
while True:
block, num_of_fields = CTaosInterface.fetchRow(
self._result, self._fields)
errno = CTaosInterface.libtaos.taos_errno(self._result)
if errno != 0:
raise ProgrammingError(
CTaosInterface.errStr(
self._result), errno)
if num_of_fields == 0:
break
self._rowcount += num_of_fields
for i in range(len(self._fields)):
buffer[i].extend(block[i])
return list(map(tuple, zip(*buffer)))
def fetchall(self):
if self._result is None or self._fields is None:
raise OperationalError("Invalid use of fetchall")
buffer = [[] for i in range(len(self._fields))]
self._rowcount = 0
while True:
block, num_of_fields = CTaosInterface.fetchBlock(
self._result, self._fields)
errno = CTaosInterface.libtaos.taos_errno(self._result)
if errno != 0:
raise ProgrammingError(
CTaosInterface.errStr(
self._result), errno)
if num_of_fields == 0:
break
self._rowcount += num_of_fields
for i in range(len(self._fields)):
buffer[i].extend(block[i])
return list(map(tuple, zip(*buffer)))
def nextset(self):
"""
"""
pass
def setinputsize(self, sizes):
pass
def setutputsize(self, size, column=None):
pass
def _reset_result(self):
"""Reset the result to unused version.
"""
self._description = []
self._rowcount = -1
if self._result is not None:
CTaosInterface.freeResult(self._result)
self._result = None
self._fields = None
self._block = None
self._block_rows = -1
self._block_iter = 0
self._affected_rows = 0
def _handle_result(self):
"""Handle the return result from query.
"""
self._description = []
for ele in self._fields:
self._description.append(
(ele['name'], ele['type'], None, None, None, None, False))
return self._result
src/connector/python/windows/python3/taos/dbapi.py 已删除 100644 → 0
浏览文件 @ 398397bc
"""Type Objects and Constructors.
"""
import time
import datetime
class DBAPITypeObject(object):
def __init__(self, *values):
self.values = values
def __com__(self, other):
if other in self.values:
return 0
if other < self.values:
return 1
else:
return -1
Date = datetime.date
Time = datetime.time
Timestamp = datetime.datetime
def DataFromTicks(ticks):
return Date(*time.localtime(ticks)[:3])
def TimeFromTicks(ticks):
return Time(*time.localtime(ticks)[3:6])
def TimestampFromTicks(ticks):
return Timestamp(*time.localtime(ticks)[:6])
Binary = bytes
# STRING = DBAPITypeObject(*constants.FieldType.get_string_types())
# BINARY = DBAPITypeObject(*constants.FieldType.get_binary_types())
# NUMBER = BAPITypeObject(*constants.FieldType.get_number_types())
# DATETIME = DBAPITypeObject(*constants.FieldType.get_timestamp_types())
# ROWID = DBAPITypeObject()
src/connector/python/windows/python3/taos/error.py 已删除 100644 → 0
浏览文件 @ 398397bc
"""Python exceptions
"""
class Error(Exception):
def __init__(self, msg=None, errno=None):
self.msg = msg
self._full_msg = self.msg
self.errno = errno
def __str__(self):
return self._full_msg
class Warning(Exception):
"""Exception raised for important warnings like data truncations while inserting.
"""
pass
class InterfaceError(Error):
"""Exception raised for errors that are related to the database interface rather than the database itself.
"""
pass
class DatabaseError(Error):
"""Exception raised for errors that are related to the database.
"""
pass
class DataError(DatabaseError):
"""Exception raised for errors that are due to problems with the processed data like division by zero, numeric value out of range.
"""
pass
class OperationalError(DatabaseError):
"""Exception raised for errors that are related to the database's operation and not necessarily under the control of the programmer
"""
pass
class IntegrityError(DatabaseError):
"""Exception raised when the relational integrity of the database is affected.
"""
pass
class InternalError(DatabaseError):
"""Exception raised when the database encounters an internal error.
"""
pass
class ProgrammingError(DatabaseError):
"""Exception raised for programming errors.
"""
pass
class NotSupportedError(DatabaseError):
"""Exception raised in case a method or database API was used which is not supported by the database,.
"""
pass
src/connector/python/windows/python3/taos/subscription.py 已删除 100644 → 0
浏览文件 @ 398397bc
from .cinterface import CTaosInterface
from .error import *
class TDengineSubscription(object):
"""TDengine subscription object
"""
def __init__(self, sub):
self._sub = sub
def consume(self):
"""Consume rows of a subscription
"""
if self._sub is None:
raise OperationalError("Invalid use of consume")
result, fields = CTaosInterface.consume(self._sub)
buffer = [[] for i in range(len(fields))]
while True:
block, num_of_fields = CTaosInterface.fetchBlock(result, fields)
if num_of_fields == 0:
break
for i in range(len(fields)):
buffer[i].extend(block[i])
self.fields = fields
return list(map(tuple, zip(*buffer)))
def close(self, keepProgress=True):
"""Close the Subscription.
"""
if self._sub is None:
return False
CTaosInterface.unsubscribe(self._sub, keepProgress)
return True
if __name__ == '__main__':
from .connection import TDengineConnection
conn = TDengineConnection(
host="127.0.0.1",
user="root",
password="taosdata",
database="test")
# Generate a cursor object to run SQL commands
sub = conn.subscribe(True, "test", "select * from meters;", 1000)
for i in range(0, 10):
data = sub.consume()
for d in data:
print(d)
sub.close()
conn.close()
src/inc/taoserror.h
浏览文件 @ 7617a973
...@@ -215,11 +215,11 @@ int32_t* taosGetErrno(); ...@@ -215,11 +215,11 @@ int32_t* taosGetErrno();
#define TSDB_CODE_VND_IS_FLOWCTRL TAOS_DEF_ERROR_CODE(0, 0x050C) //"Database memory is full for waiting commit") #define TSDB_CODE_VND_IS_FLOWCTRL TAOS_DEF_ERROR_CODE(0, 0x050C) //"Database memory is full for waiting commit")
#define TSDB_CODE_VND_IS_DROPPING TAOS_DEF_ERROR_CODE(0, 0x050D) //"Database is dropping") #define TSDB_CODE_VND_IS_DROPPING TAOS_DEF_ERROR_CODE(0, 0x050D) //"Database is dropping")
#define TSDB_CODE_VND_IS_BALANCING TAOS_DEF_ERROR_CODE(0, 0x050E) //"Database is balancing") #define TSDB_CODE_VND_IS_BALANCING TAOS_DEF_ERROR_CODE(0, 0x050E) //"Database is balancing")
#define TSDB_CODE_VND_IS_CLOSING TAOS_DEF_ERROR_CODE(0, 0x0510) //"Database is closing")
#define TSDB_CODE_VND_NOT_SYNCED TAOS_DEF_ERROR_CODE(0, 0x0511) //"Database suspended") #define TSDB_CODE_VND_NOT_SYNCED TAOS_DEF_ERROR_CODE(0, 0x0511) //"Database suspended")
#define TSDB_CODE_VND_NO_WRITE_AUTH TAOS_DEF_ERROR_CODE(0, 0x0512) //"Database write operation denied") #define TSDB_CODE_VND_NO_WRITE_AUTH TAOS_DEF_ERROR_CODE(0, 0x0512) //"Database write operation denied")
#define TSDB_CODE_VND_IS_SYNCING TAOS_DEF_ERROR_CODE(0, 0x0513) //"Database is syncing") #define TSDB_CODE_VND_IS_SYNCING TAOS_DEF_ERROR_CODE(0, 0x0513) //"Database is syncing")
#define TSDB_CODE_VND_INVALID_TSDB_STATE TAOS_DEF_ERROR_CODE(0, 0x0514) //"Invalid tsdb state") #define TSDB_CODE_VND_INVALID_TSDB_STATE TAOS_DEF_ERROR_CODE(0, 0x0514) //"Invalid tsdb state")
#define TSDB_CODE_VND_IS_CLOSING TAOS_DEF_ERROR_CODE(0, 0x0515) //"Database is closing")
// tsdb // tsdb
#define TSDB_CODE_TDB_INVALID_TABLE_ID TAOS_DEF_ERROR_CODE(0, 0x0600) //"Invalid table ID") #define TSDB_CODE_TDB_INVALID_TABLE_ID TAOS_DEF_ERROR_CODE(0, 0x0600) //"Invalid table ID")
......
src/kit/taosdemo/taosdemo.c
浏览文件 @ 7617a973
...@@ -364,7 +364,7 @@ typedef struct SDbs_S { ...@@ -364,7 +364,7 @@ typedef struct SDbs_S {
typedef struct SpecifiedQueryInfo_S { typedef struct SpecifiedQueryInfo_S {
uint64_t queryInterval; // 0: unlimit > 0 loop/s uint64_t queryInterval; // 0: unlimit > 0 loop/s
uint32_t concurrent; uint32_t concurrent;
uint64_t sqlCount; int sqlCount;
uint32_t asyncMode; // 0: sync, 1: async uint32_t asyncMode; // 0: sync, 1: async
uint64_t subscribeInterval; // ms uint64_t subscribeInterval; // ms
uint64_t queryTimes; uint64_t queryTimes;
...@@ -373,6 +373,7 @@ typedef struct SpecifiedQueryInfo_S { ...@@ -373,6 +373,7 @@ typedef struct SpecifiedQueryInfo_S {
char sql[MAX_QUERY_SQL_COUNT][MAX_QUERY_SQL_LENGTH+1]; char sql[MAX_QUERY_SQL_COUNT][MAX_QUERY_SQL_LENGTH+1];
char result[MAX_QUERY_SQL_COUNT][MAX_FILE_NAME_LEN+1]; char result[MAX_QUERY_SQL_COUNT][MAX_FILE_NAME_LEN+1];
int resubAfterConsume[MAX_QUERY_SQL_COUNT]; int resubAfterConsume[MAX_QUERY_SQL_COUNT];
int endAfterConsume[MAX_QUERY_SQL_COUNT];
TAOS_SUB* tsub[MAX_QUERY_SQL_COUNT]; TAOS_SUB* tsub[MAX_QUERY_SQL_COUNT];
char topic[MAX_QUERY_SQL_COUNT][32]; char topic[MAX_QUERY_SQL_COUNT][32];
int consumed[MAX_QUERY_SQL_COUNT]; int consumed[MAX_QUERY_SQL_COUNT];
...@@ -391,10 +392,11 @@ typedef struct SuperQueryInfo_S { ...@@ -391,10 +392,11 @@ typedef struct SuperQueryInfo_S {
uint64_t queryTimes; uint64_t queryTimes;
int64_t childTblCount; int64_t childTblCount;
char childTblPrefix[MAX_TB_NAME_SIZE]; char childTblPrefix[MAX_TB_NAME_SIZE];
uint64_t sqlCount; int sqlCount;
char sql[MAX_QUERY_SQL_COUNT][MAX_QUERY_SQL_LENGTH+1]; char sql[MAX_QUERY_SQL_COUNT][MAX_QUERY_SQL_LENGTH+1];
char result[MAX_QUERY_SQL_COUNT][MAX_FILE_NAME_LEN+1]; char result[MAX_QUERY_SQL_COUNT][MAX_FILE_NAME_LEN+1];
int resubAfterConsume; int resubAfterConsume;
int endAfterConsume;
TAOS_SUB* tsub[MAX_QUERY_SQL_COUNT]; TAOS_SUB* tsub[MAX_QUERY_SQL_COUNT];
char* childTblName; char* childTblName;
...@@ -1717,7 +1719,7 @@ static void printfQueryMeta() { ...@@ -1717,7 +1719,7 @@ static void printfQueryMeta() {
if ((SUBSCRIBE_TEST == g_args.test_mode) || (QUERY_TEST == g_args.test_mode)) { if ((SUBSCRIBE_TEST == g_args.test_mode) || (QUERY_TEST == g_args.test_mode)) {
printf("specified table query info: \n"); printf("specified table query info: \n");
printf("sqlCount: \033[33m%"PRIu64"\033[0m\n", printf("sqlCount: \033[33m%d\033[0m\n",
g_queryInfo.specifiedQueryInfo.sqlCount); g_queryInfo.specifiedQueryInfo.sqlCount);
if (g_queryInfo.specifiedQueryInfo.sqlCount > 0) { if (g_queryInfo.specifiedQueryInfo.sqlCount > 0) {
printf("specified tbl query times:\n"); printf("specified tbl query times:\n");
...@@ -1737,15 +1739,15 @@ static void printfQueryMeta() { ...@@ -1737,15 +1739,15 @@ static void printfQueryMeta() {
printf("keepProgress: \033[33m%d\033[0m\n", printf("keepProgress: \033[33m%d\033[0m\n",
g_queryInfo.specifiedQueryInfo.subscribeKeepProgress); g_queryInfo.specifiedQueryInfo.subscribeKeepProgress);
for (uint64_t i = 0; i < g_queryInfo.specifiedQueryInfo.sqlCount; i++) { for (int i = 0; i < g_queryInfo.specifiedQueryInfo.sqlCount; i++) {
printf(" sql[%"PRIu64"]: \033[33m%s\033[0m\n", printf(" sql[%d]: \033[33m%s\033[0m\n",
i, g_queryInfo.specifiedQueryInfo.sql[i]); i, g_queryInfo.specifiedQueryInfo.sql[i]);
} }
printf("\n"); printf("\n");
} }
printf("super table query info:\n"); printf("super table query info:\n");
printf("sqlCount: \033[33m%"PRIu64"\033[0m\n", printf("sqlCount: \033[33m%d\033[0m\n",
g_queryInfo.superQueryInfo.sqlCount); g_queryInfo.superQueryInfo.sqlCount);
if (g_queryInfo.superQueryInfo.sqlCount > 0) { if (g_queryInfo.superQueryInfo.sqlCount > 0) {
...@@ -4197,7 +4199,7 @@ static bool getMetaFromQueryJsonFile(cJSON* root) { ...@@ -4197,7 +4199,7 @@ static bool getMetaFromQueryJsonFile(cJSON* root) {
if (concurrent && concurrent->type == cJSON_Number) { if (concurrent && concurrent->type == cJSON_Number) {
if (concurrent->valueint <= 0) { if (concurrent->valueint <= 0) {
errorPrint( errorPrint(
"%s() LN%d, query sqlCount %"PRIu64" or concurrent %d is not correct.\n", "%s() LN%d, query sqlCount %d or concurrent %d is not correct.\n",
__func__, __LINE__, __func__, __LINE__,
g_queryInfo.specifiedQueryInfo.sqlCount, g_queryInfo.specifiedQueryInfo.sqlCount,
g_queryInfo.specifiedQueryInfo.concurrent); g_queryInfo.specifiedQueryInfo.concurrent);
...@@ -4296,6 +4298,17 @@ static bool getMetaFromQueryJsonFile(cJSON* root) { ...@@ -4296,6 +4298,17 @@ static bool getMetaFromQueryJsonFile(cJSON* root) {
tstrncpy(g_queryInfo.specifiedQueryInfo.sql[j], tstrncpy(g_queryInfo.specifiedQueryInfo.sql[j],
sqlStr->valuestring, MAX_QUERY_SQL_LENGTH); sqlStr->valuestring, MAX_QUERY_SQL_LENGTH);
cJSON* endAfterConsume =
cJSON_GetObjectItem(specifiedQuery, "endAfterConsume");
if (endAfterConsume
&& endAfterConsume->type == cJSON_Number) {
g_queryInfo.specifiedQueryInfo.endAfterConsume[j]
= endAfterConsume->valueint;
} else if (!endAfterConsume) {
// default value is -1, which mean infinite loop
g_queryInfo.specifiedQueryInfo.endAfterConsume[j] = -1;
}
cJSON* resubAfterConsume = cJSON* resubAfterConsume =
cJSON_GetObjectItem(specifiedQuery, "resubAfterConsume"); cJSON_GetObjectItem(specifiedQuery, "resubAfterConsume");
if (resubAfterConsume if (resubAfterConsume
...@@ -4303,9 +4316,8 @@ static bool getMetaFromQueryJsonFile(cJSON* root) { ...@@ -4303,9 +4316,8 @@ static bool getMetaFromQueryJsonFile(cJSON* root) {
g_queryInfo.specifiedQueryInfo.resubAfterConsume[j] g_queryInfo.specifiedQueryInfo.resubAfterConsume[j]
= resubAfterConsume->valueint; = resubAfterConsume->valueint;
} else if (!resubAfterConsume) { } else if (!resubAfterConsume) {
//printf("failed to read json, subscribe interval no found\n"); // default value is -1, which mean do not resub
//goto PARSE_OVER; g_queryInfo.specifiedQueryInfo.resubAfterConsume[j] = -1;
g_queryInfo.specifiedQueryInfo.resubAfterConsume[j] = 1;
} }
cJSON *result = cJSON_GetObjectItem(sql, "result"); cJSON *result = cJSON_GetObjectItem(sql, "result");
...@@ -4449,16 +4461,26 @@ static bool getMetaFromQueryJsonFile(cJSON* root) { ...@@ -4449,16 +4461,26 @@ static bool getMetaFromQueryJsonFile(cJSON* root) {
g_queryInfo.superQueryInfo.subscribeKeepProgress = 0; g_queryInfo.superQueryInfo.subscribeKeepProgress = 0;
} }
cJSON* superEndAfterConsume =
cJSON_GetObjectItem(superQuery, "endAfterConsume");
if (superEndAfterConsume
&& superEndAfterConsume->type == cJSON_Number) {
g_queryInfo.superQueryInfo.endAfterConsume =
superEndAfterConsume->valueint;
} else if (!superEndAfterConsume) {
// default value is -1, which mean do not resub
g_queryInfo.superQueryInfo.endAfterConsume = -1;
}
cJSON* superResubAfterConsume = cJSON* superResubAfterConsume =
cJSON_GetObjectItem(superQuery, "resubAfterConsume"); cJSON_GetObjectItem(superQuery, "endAfterConsume");
if (superResubAfterConsume if (superResubAfterConsume
&& superResubAfterConsume->type == cJSON_Number) { && superResubAfterConsume->type == cJSON_Number) {
g_queryInfo.superQueryInfo.resubAfterConsume = g_queryInfo.superQueryInfo.endAfterConsume =
superResubAfterConsume->valueint; superResubAfterConsume->valueint;
} else if (!superResubAfterConsume) { } else if (!superResubAfterConsume) {
//printf("failed to read json, subscribe interval no found\n"); // default value is -1, which mean do not resub
////goto PARSE_OVER; g_queryInfo.superQueryInfo.endAfterConsume = -1;
g_queryInfo.superQueryInfo.resubAfterConsume = 1;
} }
// supert table sqls // supert table sqls
...@@ -6239,7 +6261,7 @@ static void *specifiedTableQuery(void *sarg) { ...@@ -6239,7 +6261,7 @@ static void *specifiedTableQuery(void *sarg) {
uint64_t lastPrintTime = taosGetTimestampMs(); uint64_t lastPrintTime = taosGetTimestampMs();
uint64_t startTs = taosGetTimestampMs(); uint64_t startTs = taosGetTimestampMs();
if (g_queryInfo.specifiedQueryInfo.result[pThreadInfo->querySeq] != NULL) { if (g_queryInfo.specifiedQueryInfo.result[pThreadInfo->querySeq][0] != '\0') {
sprintf(pThreadInfo->filePath, "%s-%d", sprintf(pThreadInfo->filePath, "%s-%d",
g_queryInfo.specifiedQueryInfo.result[pThreadInfo->querySeq], g_queryInfo.specifiedQueryInfo.result[pThreadInfo->querySeq],
pThreadInfo->threadID); pThreadInfo->threadID);
...@@ -6340,7 +6362,7 @@ static void *superTableQuery(void *sarg) { ...@@ -6340,7 +6362,7 @@ static void *superTableQuery(void *sarg) {
for (int j = 0; j < g_queryInfo.superQueryInfo.sqlCount; j++) { for (int j = 0; j < g_queryInfo.superQueryInfo.sqlCount; j++) {
memset(sqlstr,0,sizeof(sqlstr)); memset(sqlstr,0,sizeof(sqlstr));
replaceChildTblName(g_queryInfo.superQueryInfo.sql[j], sqlstr, i); replaceChildTblName(g_queryInfo.superQueryInfo.sql[j], sqlstr, i);
if (g_queryInfo.superQueryInfo.result[j] != NULL) { if (g_queryInfo.superQueryInfo.result[j][0] != '\0') {
sprintf(pThreadInfo->filePath, "%s-%d", sprintf(pThreadInfo->filePath, "%s-%d",
g_queryInfo.superQueryInfo.result[j], g_queryInfo.superQueryInfo.result[j],
pThreadInfo->threadID); pThreadInfo->threadID);
...@@ -6679,7 +6701,10 @@ static void *superSubscribe(void *sarg) { ...@@ -6679,7 +6701,10 @@ static void *superSubscribe(void *sarg) {
uint64_t st = 0, et = 0; uint64_t st = 0, et = 0;
while(1) { while ((g_queryInfo.superQueryInfo.endAfterConsume == -1)
|| (g_queryInfo.superQueryInfo.endAfterConsume <
consumed[pThreadInfo->end_table_to - pThreadInfo->start_table_from])) {
for (uint64_t i = pThreadInfo->start_table_from; for (uint64_t i = pThreadInfo->start_table_from;
i <= pThreadInfo->end_table_to; i++) { i <= pThreadInfo->end_table_to; i++) {
tsubSeq = i - pThreadInfo->start_table_from; tsubSeq = i - pThreadInfo->start_table_from;
...@@ -6708,7 +6733,7 @@ static void *superSubscribe(void *sarg) { ...@@ -6708,7 +6733,7 @@ static void *superSubscribe(void *sarg) {
} }
consumed[tsubSeq] ++; consumed[tsubSeq] ++;
if ((g_queryInfo.superQueryInfo.subscribeKeepProgress) if ((g_queryInfo.superQueryInfo.resubAfterConsume != -1)
&& (consumed[tsubSeq] >= && (consumed[tsubSeq] >=
g_queryInfo.superQueryInfo.resubAfterConsume)) { g_queryInfo.superQueryInfo.resubAfterConsume)) {
printf("keepProgress:%d, resub super table query: %"PRIu64"\n", printf("keepProgress:%d, resub super table query: %"PRIu64"\n",
...@@ -6771,7 +6796,7 @@ static void *specifiedSubscribe(void *sarg) { ...@@ -6771,7 +6796,7 @@ static void *specifiedSubscribe(void *sarg) {
"taosdemo-subscribe-%"PRIu64"-%d", "taosdemo-subscribe-%"PRIu64"-%d",
pThreadInfo->querySeq, pThreadInfo->querySeq,
pThreadInfo->threadID); pThreadInfo->threadID);
if (g_queryInfo.specifiedQueryInfo.result[pThreadInfo->querySeq] != NULL) { if (g_queryInfo.specifiedQueryInfo.result[pThreadInfo->querySeq][0] != '\0') {
sprintf(pThreadInfo->filePath, "%s-%d", sprintf(pThreadInfo->filePath, "%s-%d",
g_queryInfo.specifiedQueryInfo.result[pThreadInfo->querySeq], g_queryInfo.specifiedQueryInfo.result[pThreadInfo->querySeq],
pThreadInfo->threadID); pThreadInfo->threadID);
...@@ -6790,7 +6815,10 @@ static void *specifiedSubscribe(void *sarg) { ...@@ -6790,7 +6815,10 @@ static void *specifiedSubscribe(void *sarg) {
// start loop to consume result // start loop to consume result
g_queryInfo.specifiedQueryInfo.consumed[pThreadInfo->threadID] = 0; g_queryInfo.specifiedQueryInfo.consumed[pThreadInfo->threadID] = 0;
while(1) { while((g_queryInfo.specifiedQueryInfo.endAfterConsume[pThreadInfo->querySeq] == -1)
|| (g_queryInfo.specifiedQueryInfo.consumed[pThreadInfo->threadID] <
g_queryInfo.specifiedQueryInfo.endAfterConsume[pThreadInfo->querySeq])) {
if (ASYNC_MODE == g_queryInfo.specifiedQueryInfo.asyncMode) { if (ASYNC_MODE == g_queryInfo.specifiedQueryInfo.asyncMode) {
continue; continue;
} }
...@@ -6806,7 +6834,7 @@ static void *specifiedSubscribe(void *sarg) { ...@@ -6806,7 +6834,7 @@ static void *specifiedSubscribe(void *sarg) {
} }
g_queryInfo.specifiedQueryInfo.consumed[pThreadInfo->threadID] ++; g_queryInfo.specifiedQueryInfo.consumed[pThreadInfo->threadID] ++;
if ((g_queryInfo.specifiedQueryInfo.subscribeKeepProgress) if ((g_queryInfo.specifiedQueryInfo.resubAfterConsume[pThreadInfo->querySeq] != -1)
&& (g_queryInfo.specifiedQueryInfo.consumed[pThreadInfo->threadID] >= && (g_queryInfo.specifiedQueryInfo.consumed[pThreadInfo->threadID] >=
g_queryInfo.specifiedQueryInfo.resubAfterConsume[pThreadInfo->querySeq])) { g_queryInfo.specifiedQueryInfo.resubAfterConsume[pThreadInfo->querySeq])) {
printf("keepProgress:%d, resub specified query: %"PRIu64"\n", printf("keepProgress:%d, resub specified query: %"PRIu64"\n",
...@@ -6873,12 +6901,12 @@ static int subscribeTestProcess() { ...@@ -6873,12 +6901,12 @@ static int subscribeTestProcess() {
//==== create threads for query for specified table //==== create threads for query for specified table
if (g_queryInfo.specifiedQueryInfo.sqlCount <= 0) { if (g_queryInfo.specifiedQueryInfo.sqlCount <= 0) {
debugPrint("%s() LN%d, sepcified query sqlCount %"PRIu64".\n", debugPrint("%s() LN%d, sepcified query sqlCount %d.\n",
__func__, __LINE__, __func__, __LINE__,
g_queryInfo.specifiedQueryInfo.sqlCount); g_queryInfo.specifiedQueryInfo.sqlCount);
} else { } else {
if (g_queryInfo.specifiedQueryInfo.concurrent <= 0) { if (g_queryInfo.specifiedQueryInfo.concurrent <= 0) {
errorPrint("%s() LN%d, sepcified query sqlCount %"PRIu64".\n", errorPrint("%s() LN%d, sepcified query sqlCount %d.\n",
__func__, __LINE__, __func__, __LINE__,
g_queryInfo.specifiedQueryInfo.sqlCount); g_queryInfo.specifiedQueryInfo.sqlCount);
exit(-1); exit(-1);
...@@ -6911,7 +6939,7 @@ static int subscribeTestProcess() { ...@@ -6911,7 +6939,7 @@ static int subscribeTestProcess() {
//==== create threads for super table query //==== create threads for super table query
if (g_queryInfo.superQueryInfo.sqlCount <= 0) { if (g_queryInfo.superQueryInfo.sqlCount <= 0) {
debugPrint("%s() LN%d, super table query sqlCount %"PRIu64".\n", debugPrint("%s() LN%d, super table query sqlCount %d.\n",
__func__, __LINE__, __func__, __LINE__,
g_queryInfo.superQueryInfo.sqlCount); g_queryInfo.superQueryInfo.sqlCount);
} else { } else {
......
src/mnode/src/mnodeSdb.c
浏览文件 @ 7617a973
...@@ -649,8 +649,6 @@ static int32_t sdbProcessWrite(void *wparam, void *hparam, int32_t qtype, void * ...@@ -649,8 +649,6 @@ static int32_t sdbProcessWrite(void *wparam, void *hparam, int32_t qtype, void *
dnodeReportStep("mnode-sdb", stepDesc, 0); dnodeReportStep("mnode-sdb", stepDesc, 0);
} }
if (qtype == TAOS_QTYPE_QUERY) return sdbPerformDeleteAction(pHead, pTable);
pthread_mutex_lock(&tsSdbMgmt.mutex); pthread_mutex_lock(&tsSdbMgmt.mutex);
if (pHead->version == 0) { if (pHead->version == 0) {
...@@ -712,13 +710,11 @@ static int32_t sdbProcessWrite(void *wparam, void *hparam, int32_t qtype, void * ...@@ -712,13 +710,11 @@ static int32_t sdbProcessWrite(void *wparam, void *hparam, int32_t qtype, void *
if (action == SDB_ACTION_INSERT) { if (action == SDB_ACTION_INSERT) {
return sdbPerformInsertAction(pHead, pTable); return sdbPerformInsertAction(pHead, pTable);
} else if (action == SDB_ACTION_DELETE) { } else if (action == SDB_ACTION_DELETE) {
//if (qtype == TAOS_QTYPE_FWD) { if (qtype == TAOS_QTYPE_FWD) {
// Drop database/stable may take a long time and cause a timeout, so we confirm first then reput it into queue // Drop database/stable may take a long time and cause a timeout, so we confirm first
// sdbWriteFwdToQueue(1, hparam, TAOS_QTYPE_QUERY, unused); syncConfirmForward(tsSdbMgmt.sync, pHead->version, TSDB_CODE_SUCCESS, false);
// return TSDB_CODE_SUCCESS; }
//} else {
return sdbPerformDeleteAction(pHead, pTable); return sdbPerformDeleteAction(pHead, pTable);
//}
} else if (action == SDB_ACTION_UPDATE) { } else if (action == SDB_ACTION_UPDATE) {
return sdbPerformUpdateAction(pHead, pTable); return sdbPerformUpdateAction(pHead, pTable);
} else { } else {
...@@ -1125,8 +1121,11 @@ static void *sdbWorkerFp(void *pWorker) { ...@@ -1125,8 +1121,11 @@ static void *sdbWorkerFp(void *pWorker) {
sdbConfirmForward(1, pRow, pRow->code); sdbConfirmForward(1, pRow, pRow->code);
} else { } else {
if (qtype == TAOS_QTYPE_FWD) { if (qtype == TAOS_QTYPE_FWD) {
int32_t action = pRow->pHead.msgType % 10;
if (action != SDB_ACTION_DELETE) {
syncConfirmForward(tsSdbMgmt.sync, pRow->pHead.version, pRow->code, false); syncConfirmForward(tsSdbMgmt.sync, pRow->pHead.version, pRow->code, false);
} }
}
sdbFreeFromQueue(pRow); sdbFreeFromQueue(pRow);
} }
} }
......
src/tsdb/src/tsdbMeta.c
浏览文件 @ 7617a973
...@@ -924,10 +924,7 @@ static int tsdbRemoveTableFromIndex(STsdbMeta *pMeta, STable *pTable) { ...@@ -924,10 +924,7 @@ static int tsdbRemoveTableFromIndex(STsdbMeta *pMeta, STable *pTable) {
STable *pSTable = pTable->pSuper; STable *pSTable = pTable->pSuper;
ASSERT(pSTable != NULL); ASSERT(pSTable != NULL);
STSchema *pSchema = tsdbGetTableTagSchema(pTable); char* key = getTagIndexKey(pTable);
STColumn *pCol = schemaColAt(pSchema, DEFAULT_TAG_INDEX_COLUMN);
char * key = tdGetKVRowValOfCol(pTable->tagVal, pCol->colId);
SArray *res = tSkipListGet(pSTable->pIndex, key); SArray *res = tSkipListGet(pSTable->pIndex, key);
size_t size = taosArrayGetSize(res); size_t size = taosArrayGetSize(res);
......
src/util/inc/ttoken.h
浏览文件 @ 7617a973
...@@ -185,6 +185,8 @@ static FORCE_INLINE int32_t tGetNumericStringType(const SStrToken* pToken) { ...@@ -185,6 +185,8 @@ static FORCE_INLINE int32_t tGetNumericStringType(const SStrToken* pToken) {
void taosCleanupKeywordsTable(); void taosCleanupKeywordsTable();
SStrToken taosTokenDup(SStrToken* pToken, char* buf, int32_t len);
#ifdef __cplusplus #ifdef __cplusplus
} }
#endif #endif
......
src/util/src/terror.c
浏览文件 @ 7617a973
...@@ -227,6 +227,7 @@ TAOS_DEFINE_ERROR(TSDB_CODE_VND_IS_FULL, "Database memory is fu ...@@ -227,6 +227,7 @@ TAOS_DEFINE_ERROR(TSDB_CODE_VND_IS_FULL, "Database memory is fu
TAOS_DEFINE_ERROR(TSDB_CODE_VND_IS_FLOWCTRL, "Database memory is full for waiting commit") TAOS_DEFINE_ERROR(TSDB_CODE_VND_IS_FLOWCTRL, "Database memory is full for waiting commit")
TAOS_DEFINE_ERROR(TSDB_CODE_VND_IS_DROPPING, "Database is dropping") TAOS_DEFINE_ERROR(TSDB_CODE_VND_IS_DROPPING, "Database is dropping")
TAOS_DEFINE_ERROR(TSDB_CODE_VND_IS_BALANCING, "Database is balancing") TAOS_DEFINE_ERROR(TSDB_CODE_VND_IS_BALANCING, "Database is balancing")
TAOS_DEFINE_ERROR(TSDB_CODE_VND_IS_CLOSING, "Database is closing")
TAOS_DEFINE_ERROR(TSDB_CODE_VND_NOT_SYNCED, "Database suspended") TAOS_DEFINE_ERROR(TSDB_CODE_VND_NOT_SYNCED, "Database suspended")
TAOS_DEFINE_ERROR(TSDB_CODE_VND_NO_WRITE_AUTH, "Database write operation denied") TAOS_DEFINE_ERROR(TSDB_CODE_VND_NO_WRITE_AUTH, "Database write operation denied")
TAOS_DEFINE_ERROR(TSDB_CODE_VND_IS_SYNCING, "Database is syncing") TAOS_DEFINE_ERROR(TSDB_CODE_VND_IS_SYNCING, "Database is syncing")
......
src/util/src/ttokenizer.c
浏览文件 @ 7617a973
...@@ -664,3 +664,15 @@ void taosCleanupKeywordsTable() { ...@@ -664,3 +664,15 @@ void taosCleanupKeywordsTable() {
taosHashCleanup(m); taosHashCleanup(m);
} }
} }
SStrToken taosTokenDup(SStrToken* pToken, char* buf, int32_t len) {
assert(pToken != NULL && buf != NULL);
SStrToken token = *pToken;
token.z = buf;
assert(len > token.n);
strncpy(token.z, pToken->z, pToken->n);
token.z[token.n] = 0;
return token;
}
tests/How-To-Run-Test-And-How-To-Add-New-Test-Case.md
浏览文件 @ 7617a973
...@@ -8,8 +8,8 @@ ...@@ -8,8 +8,8 @@
3. mkdir debug; cd debug; cmake ..; make ; sudo make install 3. mkdir debug; cd debug; cmake ..; make ; sudo make install
4. pip install ../src/connector/python/linux/python2 ; pip3 install 4. pip install ../src/connector/python ; pip3 install
../src/connector/python/linux/python3 ../src/connector/python
5. pip install numpy; pip3 install numpy (numpy is required only if you need to run querySort.py) 5. pip install numpy; pip3 install numpy (numpy is required only if you need to run querySort.py)
......
tests/Jenkinsfile
浏览文件 @ 7617a973
...@@ -21,7 +21,7 @@ def pre_test(){ ...@@ -21,7 +21,7 @@ def pre_test(){
cmake .. > /dev/null cmake .. > /dev/null
make > /dev/null make > /dev/null
make install > /dev/null make install > /dev/null
pip3 install ${WKC}/src/connector/python/linux/python3/ pip3 install ${WKC}/src/connector/python
''' '''
return 1 return 1
} }
......
tests/pytest/concurrent_inquiry.sh
浏览文件 @ 7617a973
...@@ -48,7 +48,7 @@ fi ...@@ -48,7 +48,7 @@ fi
PYTHON_EXEC=python3.8 PYTHON_EXEC=python3.8
# First we need to set up a path for Python to find our own TAOS modules, so that "import" can work. # First we need to set up a path for Python to find our own TAOS modules, so that "import" can work.
export PYTHONPATH=$(pwd)/../../src/connector/python/linux/python3:$(pwd) export PYTHONPATH=$(pwd)/../../src/connector/python:$(pwd)
# Then let us set up the library path so that our compiled SO file can be loaded by Python # Then let us set up the library path so that our compiled SO file can be loaded by Python
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$LIB_DIR export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$LIB_DIR
......
tests/pytest/crash_gen.sh
浏览文件 @ 7617a973
...@@ -48,7 +48,7 @@ fi ...@@ -48,7 +48,7 @@ fi
PYTHON_EXEC=python3.8 PYTHON_EXEC=python3.8
# First we need to set up a path for Python to find our own TAOS modules, so that "import" can work. # First we need to set up a path for Python to find our own TAOS modules, so that "import" can work.
export PYTHONPATH=$(pwd)/../../src/connector/python/linux/python3:$(pwd) export PYTHONPATH=$(pwd)/../../src/connector/python:$(pwd)
# Then let us set up the library path so that our compiled SO file can be loaded by Python # Then let us set up the library path so that our compiled SO file can be loaded by Python
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$LIB_DIR export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$LIB_DIR
......
tests/pytest/hivemq-extension-test.py
浏览文件 @ 7617a973
...@@ -10,7 +10,7 @@ ...@@ -10,7 +10,7 @@
# #
################################################################### ###################################################################
# install pip # install pip
# pip install src/connector/python/linux/python2/ # pip install src/connector/python/
import sys import sys
import os import os
import os.path import os.path
......
tests/pytest/perf_gen.sh
浏览文件 @ 7617a973
...@@ -48,7 +48,7 @@ fi ...@@ -48,7 +48,7 @@ fi
PYTHON_EXEC=python3.8 PYTHON_EXEC=python3.8
# First we need to set up a path for Python to find our own TAOS modules, so that "import" can work. # First we need to set up a path for Python to find our own TAOS modules, so that "import" can work.
export PYTHONPATH=$(pwd)/../../src/connector/python/linux/python3:$(pwd) export PYTHONPATH=$(pwd)/../../src/connector/python:$(pwd)
# Then let us set up the library path so that our compiled SO file can be loaded by Python # Then let us set up the library path so that our compiled SO file can be loaded by Python
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$LIB_DIR export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$LIB_DIR
......
tests/pytest/simpletest_no_sudo.sh
浏览文件 @ 7617a973
...@@ -4,7 +4,7 @@ ...@@ -4,7 +4,7 @@
# 2. No files are needed outside the development tree, everything is done in the local source code directory # 2. No files are needed outside the development tree, everything is done in the local source code directory
# First we need to set up a path for Python to find our own TAOS modules, so that "import" can work. # First we need to set up a path for Python to find our own TAOS modules, so that "import" can work.
export PYTHONPATH=$(pwd)/../../src/connector/python/linux/python3 export PYTHONPATH=$(pwd)/../../src/connector/python
# Then let us set up the library path so that our compiled SO file can be loaded by Python # Then let us set up the library path so that our compiled SO file can be loaded by Python
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$(pwd)/../../build/build/lib export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$(pwd)/../../build/build/lib
......
tests/pytest/test.py
浏览文件 @ 7617a973
...@@ -10,7 +10,7 @@ ...@@ -10,7 +10,7 @@
# #
################################################################### ###################################################################
# install pip # install pip
# pip install src/connector/python/linux/python2/ # pip install src/connector/python/
# -*- coding: utf-8 -*- # -*- coding: utf-8 -*-
import sys import sys
......
tests/pytest/test.sh
浏览文件 @ 7617a973
...@@ -13,7 +13,7 @@ else ...@@ -13,7 +13,7 @@ else
fi fi
TAOSD_DIR=`find $TAOS_DIR -name "taosd"|grep bin|head -n1` TAOSD_DIR=`find $TAOS_DIR -name "taosd"|grep bin|head -n1`
LIB_DIR=`echo $TAOSD_DIR|rev|cut -d '/' -f 3,4,5,6|rev`/lib LIB_DIR=`echo $TAOSD_DIR|rev|cut -d '/' -f 3,4,5,6|rev`/lib
export PYTHONPATH=$(pwd)/../../src/connector/python/linux/python3 export PYTHONPATH=$(pwd)/../../src/connector/python
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$LIB_DIR export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$LIB_DIR
if [[ "$1" == *"test.py"* ]]; then if [[ "$1" == *"test.py"* ]]; then
......
tests/pytest/testCompress.py
浏览文件 @ 7617a973
...@@ -10,7 +10,7 @@ ...@@ -10,7 +10,7 @@
# #
################################################################### ###################################################################
# install pip # install pip
# pip install src/connector/python/linux/python2/ # pip install src/connector/python/
# -*- coding: utf-8 -*- # -*- coding: utf-8 -*-
import sys import sys
......
tests/pytest/testMinTablesPerVnode.py
浏览文件 @ 7617a973
...@@ -10,7 +10,7 @@ ...@@ -10,7 +10,7 @@
# #
################################################################### ###################################################################
# install pip # install pip
# pip install src/connector/python/linux/python2/ # pip install src/connector/python/
# -*- coding: utf-8 -*- # -*- coding: utf-8 -*-
import sys import sys
......
tests/pytest/testNoCompress.py
浏览文件 @ 7617a973
...@@ -10,7 +10,7 @@ ...@@ -10,7 +10,7 @@
# #
################################################################### ###################################################################
# install pip # install pip
# pip install src/connector/python/linux/python2/ # pip install src/connector/python/
# -*- coding: utf-8 -*- # -*- coding: utf-8 -*-
import sys import sys
......
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