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TDengine
提交 9d97d89e 编写于 作者: G Ganlin Zhao
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CMakeLists.txt
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...@@ -70,5 +70,6 @@ INCLUDE(cmake/install.inc) ...@@ -70,5 +70,6 @@ INCLUDE(cmake/install.inc)
ADD_SUBDIRECTORY(deps) ADD_SUBDIRECTORY(deps)
ADD_SUBDIRECTORY(src) ADD_SUBDIRECTORY(src)
ADD_SUBDIRECTORY(tests) ADD_SUBDIRECTORY(tests)
ADD_SUBDIRECTORY(examples/c)
INCLUDE(CPack) INCLUDE(CPack)
documentation20/cn/00.index/docs.md
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...@@ -92,8 +92,6 @@ TDengine是一个高效的存储、查询、分析时序大数据的平台，专 ...@@ -92,8 +92,6 @@ TDengine是一个高效的存储、查询、分析时序大数据的平台，专
## [与其他工具的连接](/connections) ## [与其他工具的连接](/connections)
* [Grafana](/connections#grafana)：获取并可视化保存在TDengine的数据 * [Grafana](/connections#grafana)：获取并可视化保存在TDengine的数据
* [MATLAB](/connections#matlab)：通过配置MATLAB的JDBC数据源访问保存在TDengine的数据
* [R](/connections#r)：通过配置R的JDBC数据源访问保存在TDengine的数据
* [IDEA Database](https://www.taosdata.com/blog/2020/08/27/1767.html)：通过IDEA 数据库管理工具可视化使用 TDengine * [IDEA Database](https://www.taosdata.com/blog/2020/08/27/1767.html)：通过IDEA 数据库管理工具可视化使用 TDengine
## [TDengine集群的安装、管理](/cluster) ## [TDengine集群的安装、管理](/cluster)
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documentation20/cn/08.connector/01.java/docs.md
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...@@ -792,8 +792,8 @@ Query OK, 1 row(s) in set (0.000141s) ...@@ -792,8 +792,8 @@ Query OK, 1 row(s) in set (0.000141s)
## 在框架中使用 ## 在框架中使用
* Spring JdbcTemplate 中使用 taos-jdbcdriver，可参考 [SpringJdbcTemplate](https://github.com/taosdata/TDengine/tree/develop/tests/examples/JDBC/SpringJdbcTemplate) * Spring JdbcTemplate 中使用 taos-jdbcdriver，可参考 [SpringJdbcTemplate](https://github.com/taosdata/TDengine/tree/develop/examples/JDBC/SpringJdbcTemplate)
* Springboot + Mybatis 中使用，可参考 [springbootdemo](https://github.com/taosdata/TDengine/tree/develop/tests/examples/JDBC/springbootdemo) * Springboot + Mybatis 中使用，可参考 [springbootdemo](https://github.com/taosdata/TDengine/tree/develop/examples/JDBC/springbootdemo)
## 示例程序 ## 示例程序
...@@ -803,7 +803,7 @@ Query OK, 1 row(s) in set (0.000141s) ...@@ -803,7 +803,7 @@ Query OK, 1 row(s) in set (0.000141s)
* Springbootdemo：springboot示例源程序 * Springbootdemo：springboot示例源程序
* SpringJdbcTemplate：SpringJDBC模板 * SpringJdbcTemplate：SpringJDBC模板
请参考：[JDBC example](https://github.com/taosdata/TDengine/tree/develop/tests/examples/JDBC) 请参考：[JDBC example](https://github.com/taosdata/TDengine/tree/develop/examples/JDBC)
## 常见问题 ## 常见问题
* 使用Statement的addBatch和executeBatch来执行“批量写入/更行”，为什么没有带来性能上的提升？ * 使用Statement的addBatch和executeBatch来执行“批量写入/更行”，为什么没有带来性能上的提升？
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documentation20/cn/08.connector/docs.md
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...@@ -164,7 +164,7 @@ C/C++的API类似于MySQL的C API。应用程序使用时，需要包含TDengine ...@@ -164,7 +164,7 @@ C/C++的API类似于MySQL的C API。应用程序使用时，需要包含TDengine
### 示例程序 ### 示例程序
使用C/C++连接器的示例代码请参见 https://github.com/taosdata/TDengine/tree/develop/tests/examples/c 。 使用C/C++连接器的示例代码请参见 https://github.com/taosdata/TDengine/tree/develop/examples/c 。
示例程序源码也可以在安装目录下的 examples/c 路径下找到： 示例程序源码也可以在安装目录下的 examples/c 路径下找到：
...@@ -1080,7 +1080,7 @@ HTTP 请求 URL 采用 `sqlutc` 时，返回结果集的时间戳将采用 UTC ...@@ -1080,7 +1080,7 @@ HTTP 请求 URL 采用 `sqlutc` 时，返回结果集的时间戳将采用 UTC
示例程序源码位于 示例程序源码位于
* {client_install_directory}/examples/C# * {client_install_directory}/examples/C#
* [github C# example source code](https://github.com/taosdata/TDengine/tree/develop/tests/examples/C%2523) * [github C# example source code](https://github.com/taosdata/TDengine/tree/develop/examples/C%2523)
**注意:** TDengineTest.cs C#示例源程序,包含了数据库连接参数，以及如何执行数据插入、查询等操作。 **注意:** TDengineTest.cs C#示例源程序,包含了数据库连接参数，以及如何执行数据插入、查询等操作。
...@@ -1112,7 +1112,7 @@ dotnet add package TDengine.Connector ...@@ -1112,7 +1112,7 @@ dotnet add package TDengine.Connector
```c# ```c#
using TDengineDriver; using TDengineDriver;
``` ```
* 用户可以参考[TDengineTest.cs](https://github.com/taosdata/TDengine/tree/develop/tests/examples/C%2523/TDengineTest)来定义数据库连接参数，以及如何执行数据插入、查询等操作。 * 用户可以参考[TDengineTest.cs](https://github.com/taosdata/TDengine/tree/develop/examples/C%2523/TDengineTest)来定义数据库连接参数，以及如何执行数据插入、查询等操作。
**注意：** **注意：**
...@@ -1150,7 +1150,7 @@ Go连接器支持的系统有： ...@@ -1150,7 +1150,7 @@ Go连接器支持的系统有：
### 示例程序 ### 示例程序
使用 Go 连接器的示例代码请参考 https://github.com/taosdata/TDengine/tree/develop/tests/examples/go 以及[视频教程](https://www.taosdata.com/blog/2020/11/11/1951.html)。 使用 Go 连接器的示例代码请参考 https://github.com/taosdata/TDengine/tree/develop/examples/go 以及[视频教程](https://www.taosdata.com/blog/2020/11/11/1951.html)。
示例程序源码也位于安装目录下的 examples/go/taosdemo.go 文件中。 示例程序源码也位于安装目录下的 examples/go/taosdemo.go 文件中。
...@@ -1285,7 +1285,7 @@ Node-example-raw.js ...@@ -1285,7 +1285,7 @@ Node-example-raw.js
验证方法： 验证方法：
1. 新建安装验证目录，例如：`~/tdengine-test`，拷贝github上nodejsChecker.js源程序。下载地址：（https://github.com/taosdata/TDengine/tree/develop/tests/examples/nodejs/nodejsChecker.js）。 1. 新建安装验证目录，例如：`~/tdengine-test`，拷贝github上nodejsChecker.js源程序。下载地址：（https://github.com/taosdata/TDengine/tree/develop/examples/nodejs/nodejsChecker.js）。
2. 在命令行中执行以下命令： 2. 在命令行中执行以下命令：
...@@ -1389,6 +1389,6 @@ promise2.then(function(result) { ...@@ -1389,6 +1389,6 @@ promise2.then(function(result) {
### 示例 ### 示例
[node-example.js](https://github.com/taosdata/TDengine/tree/master/tests/examples/nodejs/node-example.js)提供了一个使用NodeJS 连接器建表，插入天气数据并查询插入的数据的代码示例。 [node-example.js](https://github.com/taosdata/tests/tree/master/examples/nodejs/node-example.js)提供了一个使用NodeJS 连接器建表，插入天气数据并查询插入的数据的代码示例。
[node-example-raw.js](https://github.com/taosdata/TDengine/tree/master/tests/examples/nodejs/node-example-raw.js)同样是一个使用NodeJS 连接器建表，插入天气数据并查询插入的数据的代码示例，但和上面不同的是，该示例只使用`cursor`。 [node-example-raw.js](https://github.com/taosdata/tests/tree/master/examples/nodejs/node-example-raw.js)同样是一个使用NodeJS 连接器建表，插入天气数据并查询插入的数据的代码示例，但和上面不同的是，该示例只使用`cursor`。
documentation20/cn/09.connections/docs.md
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...@@ -52,7 +52,7 @@ GF_PLUGINS_ALLOW_LOADING_UNSIGNED_PLUGINS=tdengine-datasource ...@@ -52,7 +52,7 @@ GF_PLUGINS_ALLOW_LOADING_UNSIGNED_PLUGINS=tdengine-datasource
#### 配置数据源 #### 配置数据源
用户可以直接通过 <http://localhost:3000> 的网址，登录 Grafana 服务器（用户名/密码：admin/admin），通过左侧 `Configuration -> Data Sources` 可以添加数据源，如下图所示： 用户可以直接通过 http://localhost:3000 的网址，登录 Grafana 服务器（用户名/密码：admin/admin），通过左侧 `Configuration -> Data Sources` 可以添加数据源，如下图所示：
![img](../images/connections/add_datasource1.jpg) ![img](../images/connections/add_datasource1.jpg)
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documentation20/cn/11.administrator/docs.md
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...@@ -149,7 +149,7 @@ taosd -C ...@@ -149,7 +149,7 @@ taosd -C
| 31 | streamCompDelayRatio | | **S** | | 连续查询的延迟时间计算系数 | 0.1-0.9 | 0.1 | | | 31 | streamCompDelayRatio | | **S** | | 连续查询的延迟时间计算系数 | 0.1-0.9 | 0.1 | |
| 32 | maxVgroupsPerDb | | **S** | | 每个DB中 能够使用的最大vnode个数 | 0-8192 | | | | 32 | maxVgroupsPerDb | | **S** | | 每个DB中 能够使用的最大vnode个数 | 0-8192 | | |
| 33 | maxTablesPerVnode | | **S** | | 每个vnode中能够创建的最大表个数 | | 1000000 | | | 33 | maxTablesPerVnode | | **S** | | 每个vnode中能够创建的最大表个数 | | 1000000 | |
| 34 | minTablesPerVnode | YES | **S** | | 每个vnode中必须创建的最小表个数 | | 100 | | | 34 | minTablesPerVnode | YES | **S** | | 每个vnode中必须创建的最小表个数 | | 1000 | |
| 35 | tableIncStepPerVnode | YES | **S** | | 每个vnode中超过最小表数后递增步长 | | 1000 | | | 35 | tableIncStepPerVnode | YES | **S** | | 每个vnode中超过最小表数后递增步长 | | 1000 | |
| 36 | cache | | **S** | MB | 内存块的大小 | | 16 | | | 36 | cache | | **S** | MB | 内存块的大小 | | 16 | |
| 37 | blocks | | **S** | | 每个vnode（tsdb）中有多少cache大小的内存块。因此一个vnode的用的内存大小粗略为（cache * blocks） | | 6 | | | 37 | blocks | | **S** | | 每个vnode（tsdb）中有多少cache大小的内存块。因此一个vnode的用的内存大小粗略为（cache * blocks） | | 6 | |
...@@ -162,7 +162,7 @@ taosd -C ...@@ -162,7 +162,7 @@ taosd -C
| 44 | walLevel | | **S** | | WAL级别 | 1：写wal, 但不执行fsync; 2：写wal, 而且执行fsync | 1 | | | 44 | walLevel | | **S** | | WAL级别 | 1：写wal, 但不执行fsync; 2：写wal, 而且执行fsync | 1 | |
| 45 | fsync | | **S** | 毫秒 | 当wal设置为2时，执行fsync的周期 | 最小为0，表示每次写入，立即执行fsync；最大为180000（三分钟） | 3000 | | | 45 | fsync | | **S** | 毫秒 | 当wal设置为2时，执行fsync的周期 | 最小为0，表示每次写入，立即执行fsync；最大为180000（三分钟） | 3000 | |
| 46 | replica | | **S** | | 副本个数 | 1-3 | 1 | | | 46 | replica | | **S** | | 副本个数 | 1-3 | 1 | |
| 47 | mqttHostName | YES | **S** | | mqtt uri | | | [mqtt://username:password@hostname:1883/taos/](mqtt://username:password@hostname:1883/taos/) | | 47 | mqttHostName | YES | **S** | | mqtt uri | | | mqtt://username:password@hostname:1883/taos/ |
| 48 | mqttPort | YES | **S** | | mqtt client name | | | 1883 | | 48 | mqttPort | YES | **S** | | mqtt client name | | | 1883 |
| 49 | mqttTopic | YES | **S** | | | | | /test | | 49 | mqttTopic | YES | **S** | | | | | /test |
| 50 | compressMsgSize | | **S** | bytes | 客户端与服务器之间进行消息通讯过程中，对通讯的消息进行压缩的阈值。如果要压缩消息，建议设置为64330字节，即大于64330字节的消息体才进行压缩。 | `0 `表示对所有的消息均进行压缩 >0: 超过该值的消息才进行压缩 -1: 不压缩 | -1 | | | 50 | compressMsgSize | | **S** | bytes | 客户端与服务器之间进行消息通讯过程中，对通讯的消息进行压缩的阈值。如果要压缩消息，建议设置为64330字节，即大于64330字节的消息体才进行压缩。 | `0 `表示对所有的消息均进行压缩 >0: 超过该值的消息才进行压缩 -1: 不压缩 | -1 | |
...@@ -602,7 +602,7 @@ chmod +x TDinsight.sh ...@@ -602,7 +602,7 @@ chmod +x TDinsight.sh
-T '{"alarm_level":"%s","time":"%s","name":"%s","content":"%s"}' -T '{"alarm_level":"%s","time":"%s","name":"%s","content":"%s"}'
``` ```
运行程序并重启 Grafana 服务，打开面板：<http://localhost:3000/d/tdinsight>。 运行程序并重启 Grafana 服务，打开面板：http://localhost:3000/d/tdinsight。
更多使用场景和限制请参考[TDinsight](https://github.com/taosdata/grafanaplugin/blob/master/dashboards/TDinsight.md) 文档。 更多使用场景和限制请参考[TDinsight](https://github.com/taosdata/grafanaplugin/blob/master/dashboards/TDinsight.md) 文档。
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documentation20/en/08.connector/01.java/docs.md
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## Integrated with framework ## Integrated with framework
- Please refer to [SpringJdbcTemplate](https://github.com/taosdata/TDengine/tree/develop/tests/examples/JDBC/SpringJdbcTemplate) if using taos-jdbcdriver in Spring JdbcTemplate. - Please refer to [SpringJdbcTemplate](https://github.com/taosdata/TDengine/tree/develop/examples/JDBC/SpringJdbcTemplate) if using taos-jdbcdriver in Spring JdbcTemplate.
- Please refer to [springbootdemo](https://github.com/taosdata/TDengine/tree/develop/tests/examples/JDBC/springbootdemo) if using taos-jdbcdriver in Spring JdbcTemplate. - Please refer to [springbootdemo](https://github.com/taosdata/TDengine/tree/develop/examples/JDBC/springbootdemo) if using taos-jdbcdriver in Spring JdbcTemplate.
## Example Codes ## Example Codes
you see sample code here: [JDBC example](https://github.com/taosdata/TDengine/tree/develop/tests/examples/JDBC) you see sample code here: [JDBC example](https://github.com/taosdata/TDengine/tree/develop/examples/JDBC)
## FAQ ## FAQ
- Why does not addBatch and executeBatch provide a performance benefit for executing "batch writes/updates"? - Why does not addBatch and executeBatch provide a performance benefit for executing "batch writes/updates"?
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documentation20/en/08.connector/docs.md
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...@@ -164,10 +164,10 @@ The C/C++ API is similar to MySQL's C API. When application use it, it needs to ...@@ -164,10 +164,10 @@ The C/C++ API is similar to MySQL's C API. When application use it, it needs to
Note: Note:
- The TDengine dynamic library needs to be linked at compiling. The library in Linux is [libtaos.so](http://libtaos.so/), which installed at/usr/local/taos/driver. By Windows, it is taos.dll and installed at C:\ TDengine. - The TDengine dynamic library needs to be linked at compiling. The library in Linux is *libtaos.so*, which installed at/usr/local/taos/driver. By Windows, it is taos.dll and installed at C:\ TDengine.
- Unless otherwise specified, when the return value of API is an integer, 0 represents success, others are error codes representing the cause of failure, and when the return value is a pointer, NULL represents failure. - Unless otherwise specified, when the return value of API is an integer, 0 represents success, others are error codes representing the cause of failure, and when the return value is a pointer, NULL represents failure.
More sample codes for using C/C++ connectors, please visit https://github.com/taosdata/TDengine/tree/develop/tests/examples/c. More sample codes for using C/C++ connectors, please visit https://github.com/taosdata/TDengine/tree/develop/examples/c.
### Basic API ### Basic API
...@@ -891,7 +891,7 @@ Only some configuration parameters related to RESTful interface are listed below ...@@ -891,7 +891,7 @@ Only some configuration parameters related to RESTful interface are listed below
### Example Source Code ### Example Source Code
you can find sample code under follow directions: you can find sample code under follow directions:
* {client_install_directory}/examples/C# * {client_install_directory}/examples/C#
* [github C# example source code](https://github.com/taosdata/TDengine/tree/develop/tests/examples/C%2523) * [github C# example source code](https://github.com/taosdata/TDengine/tree/develop/examples/C%2523)
**Tips:** TDengineTest.cs One of C# connector's sample code that include basic examples like connection,sql executions and so on. **Tips:** TDengineTest.cs One of C# connector's sample code that include basic examples like connection,sql executions and so on.
...@@ -924,7 +924,7 @@ dotnet add package TDengine.Connector ...@@ -924,7 +924,7 @@ dotnet add package TDengine.Connector
```C# ```C#
using TDengineDriver; using TDengineDriver;
``` ```
* user can reference from[TDengineTest.cs](https://github.com/taosdata/TDengine/tree/develop/tests/examples/C%2523/TDengineTest) and learn how to define database connection,query,insert and other basic data manipulations. * user can reference from[TDengineTest.cs](https://github.com/taosdata/TDengine/tree/develop/examples/C%2523/TDengineTest) and learn how to define database connection,query,insert and other basic data manipulations.
**Note:** **Note:**
...@@ -951,7 +951,7 @@ https://www.taosdata.com/blog/2020/11/02/1901.html ...@@ -951,7 +951,7 @@ https://www.taosdata.com/blog/2020/11/02/1901.html
The TDengine provides the GO driver taosSql. taosSql implements the GO language's built-in interface database/sql/driver. Users can access TDengine in the application by simply importing the package as follows, see https://github.com/taosdata/driver-go/blob/develop/taosSql/driver_test.go for details. The TDengine provides the GO driver taosSql. taosSql implements the GO language's built-in interface database/sql/driver. Users can access TDengine in the application by simply importing the package as follows, see https://github.com/taosdata/driver-go/blob/develop/taosSql/driver_test.go for details.
Sample code for using the Go connector can be found in https://github.com/taosdata/TDengine/tree/develop/tests/examples/go . Sample code for using the Go connector can be found in https://github.com/taosdata/TDengine/tree/develop/examples/go .
```Go ```Go
import ( import (
...@@ -1067,7 +1067,7 @@ After installing the TDengine client, the nodejsChecker.js program can verify wh ...@@ -1067,7 +1067,7 @@ After installing the TDengine client, the nodejsChecker.js program can verify wh
Steps: Steps:
1. Create a new installation verification directory, for example: `~/tdengine-test`, copy the nodejsChecker.js source program on github. Download address: （https://github.com/taosdata/TDengine/tree/develop/tests/examples/nodejs/nodejsChecker.js）. 1. Create a new installation verification directory, for example: `~/tdengine-test`, copy the nodejsChecker.js source program on github. Download address: （https://github.com/taosdata/TDengine/tree/develop/examples/nodejs/nodejsChecker.js）.
2. Execute the following command: 2. Execute the following command:
...@@ -1171,6 +1171,6 @@ promise2.then(function(result) { ...@@ -1171,6 +1171,6 @@ promise2.then(function(result) {
### Example ### Example
[node-example.js](https://github.com/taosdata/TDengine/tree/master/tests/examples/nodejs/node-example.js) provides a code example that uses the NodeJS connector to create a table, insert weather data, and query the inserted data. [node-example.js](https://github.com/taosdata/tests/tree/master/examples/nodejs/node-example.js) provides a code example that uses the NodeJS connector to create a table, insert weather data, and query the inserted data.
[node-example-raw.js](https://github.com/taosdata/TDengine/tree/master/tests/examples/nodejs/node-example-raw.js) is also a code example that uses the NodeJS connector to create a table, insert weather data, and query the inserted data, but unlike the above, this example only uses cursor. [node-example-raw.js](https://github.com/taosdata/tests/tree/master/examples/nodejs/node-example-raw.js) is also a code example that uses the NodeJS connector to create a table, insert weather data, and query the inserted data, but unlike the above, this example only uses cursor.
documentation20/en/09.connections/docs.md
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...@@ -63,7 +63,7 @@ Enter the data source configuration page and modify the corresponding configurat ...@@ -63,7 +63,7 @@ Enter the data source configuration page and modify the corresponding configurat
![img](../images/connections/add_datasource3.jpg) ![img](../images/connections/add_datasource3.jpg)
- Host: IP address of any server in TDengine cluster and port number of TDengine RESTful interface (6041), use [http://localhost:6041](http://localhost:6041/) to access the interface by default. Note the 2.4 and later version of TDengine use a stand-alone software, taosAdapter to provide RESTful interface. Please refer to its document for configuration and deployment. - Host: IP address of any server in TDengine cluster and port number of TDengine RESTful interface (6041), use `http://localhost:6041` to access the interface by default. Note the 2.4 and later version of TDengine use a stand-alone software, taosAdapter to provide RESTful interface. Please refer to its document for configuration and deployment.
- User: TDengine username. - User: TDengine username.
- Password: TDengine user password. - Password: TDengine user password.
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documentation20/en/10.cluster/docs.md
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...@@ -2,7 +2,7 @@ ...@@ -2,7 +2,7 @@
Multiple TDengine servers, that is, multiple running instances of taosd, can form a cluster to ensure the highly reliable operation of TDengine and provide scale-out features. To understand cluster management in TDengine 2.0, it is necessary to understand the basic concepts of clustering. Please refer to the chapter "Overall Architecture of TDengine 2.0". And before installing the cluster, please follow the chapter ["Getting started"](https://www.taosdata.com/en/documentation/getting-started/) to install and experience the single node TDengine. Multiple TDengine servers, that is, multiple running instances of taosd, can form a cluster to ensure the highly reliable operation of TDengine and provide scale-out features. To understand cluster management in TDengine 2.0, it is necessary to understand the basic concepts of clustering. Please refer to the chapter "Overall Architecture of TDengine 2.0". And before installing the cluster, please follow the chapter ["Getting started"](https://www.taosdata.com/en/documentation/getting-started/) to install and experience the single node TDengine.
Each data node of the cluster is uniquely identified by End Point, which is composed of FQDN (Fully Qualified Domain Name) plus Port, such as [h1.taosdata.com](http://h1.taosdata.com/):6030. The general FQDN is the hostname of the server, which can be obtained through the Linux command `hostname -f` (how to configure FQDN, please refer to: [All about FQDN of TDengine](https://www.taosdata.com/blog/2020/09/11/1824.html)). Port is the external service port number of this data node. The default is 6030, but it can be modified by configuring the parameter serverPort in taos.cfg. A physical node may be configured with multiple hostnames, and TDengine will automatically get the first one, but it can also be specified through the configuration parameter `fqdn` in taos.cfg. If you want to access via direct IP address, you can set the parameter `fqdn` to the IP address of this node. Each data node of the cluster is uniquely identified by End Point, which is composed of FQDN (Fully Qualified Domain Name) plus Port, such as h1.taosdata.com:6030. The general FQDN is the hostname of the server, which can be obtained through the Linux command `hostname -f` (how to configure FQDN, please refer to: [All about FQDN of TDengine](https://www.taosdata.com/blog/2020/09/11/1824.html)). Port is the external service port number of this data node. The default is 6030, but it can be modified by configuring the parameter serverPort in taos.cfg. A physical node may be configured with multiple hostnames, and TDengine will automatically get the first one, but it can also be specified through the configuration parameter `fqdn` in taos.cfg. If you want to access via direct IP address, you can set the parameter `fqdn` to the IP address of this node.
The cluster management of TDengine is extremely simple. Except for manual intervention in adding and deleting nodes, all other tasks are completed automatically, thus minimizing the workload of operation. This chapter describes the operations of cluster management in detail. The cluster management of TDengine is extremely simple. Except for manual intervention in adding and deleting nodes, all other tasks are completed automatically, thus minimizing the workload of operation. This chapter describes the operations of cluster management in detail.
...@@ -29,7 +29,7 @@ Please refer to the [video tutorial](https://www.taosdata.com/blog/2020/11/11/19 ...@@ -29,7 +29,7 @@ Please refer to the [video tutorial](https://www.taosdata.com/blog/2020/11/11/19
3. From the physical node where the application runs, ping the data node where taosd runs. If the ping fails, the application cannot connect to taosd. Please check the DNS settings or hosts file of the physical node where the application is located; 3. From the physical node where the application runs, ping the data node where taosd runs. If the ping fails, the application cannot connect to taosd. Please check the DNS settings or hosts file of the physical node where the application is located;
4. The End Point of each data node is the output hostname plus the port number, for example, `h1.taosdata.com:6030` 4. The End Point of each data node is the output hostname plus the port number, for example, `h1.taosdata.com:6030`
**Step 5:** Modify the TDengine configuration file (the file/etc/taos/taos.cfg for all nodes needs to be modified). Assume that the first data node End Point to be started is [h1.taosdata.com](http://h1.taosdata.com/): 6030, and its parameters related to cluster configuration are as follows: **Step 5:** Modify the TDengine configuration file (the file/etc/taos/taos.cfg for all nodes needs to be modified). Assume that the first data node End Point to be started is h1.taosdata.com:6030, and its parameters related to cluster configuration are as follows:
``` ```
// firstEp is the first data node connected after each data node’s first launch // firstEp is the first data node connected after each data node’s first launch
...@@ -64,7 +64,7 @@ The parameters that must be modified are firstEp and fqdn. At each data node, ev ...@@ -64,7 +64,7 @@ The parameters that must be modified are firstEp and fqdn. At each data node, ev
## <a class="anchor" id="node-one"></a> Launch the First Data Node ## <a class="anchor" id="node-one"></a> Launch the First Data Node
Follow the instructions in "[Getting started](https://www.taosdata.com/en/documentation/getting-started/)", launch the first data node, such as [h1.taosdata.com](http://h1.taosdata.com/), then execute taos, start the taos shell, and execute command "show dnodes" from the shell; ", as follows: Follow the instructions in "[Getting started](https://www.taosdata.com/en/documentation/getting-started/)", launch the first data node, such as h1.taosdata.com, then execute taos, start the taos shell, and execute command "show dnodes" from the shell; ", as follows:
``` ```
Welcome to the TDengine shell from Linux, Client Version:2.0.0.0 Welcome to the TDengine shell from Linux, Client Version:2.0.0.0
......
documentation20/en/11.administrator/docs.md
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...@@ -447,7 +447,7 @@ Some CLI options are needed to use the script: ...@@ -447,7 +447,7 @@ Some CLI options are needed to use the script:
-T '{"alarm_level":"%s","time":"%s","name":"%s","content":"%s"}' -T '{"alarm_level":"%s","time":"%s","name":"%s","content":"%s"}'
``` ```
Follow the usage of the script and then restart grafana-server service, here we go `http://localhost:3000/d/tdinsight`. Follow the usage of the script and then restart grafana-server service, here we go http://localhost:3000/d/tdinsight.
Refer to [TDinsight](https://github.com/taosdata/grafanaplugin/blob/master/dashboards/TDinsight.md) README for more scenario and limitations of the script, and the metrics descriptions for all of the TDinsight. Refer to [TDinsight](https://github.com/taosdata/grafanaplugin/blob/master/dashboards/TDinsight.md) README for more scenario and limitations of the script, and the metrics descriptions for all of the TDinsight.
......
examples/C#/.gitignore 0 → 100644
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C#checker/bin/
C#checker/obj/
TDengineTest/bin/
TDengineTest/obj/
schemaless/bin/
schemaless/obj/
stmt/TDengineDriver.cs
stmt/TaosBind.cs
stmt/TaosMultiBind.cs
stmt/bin/
stmt/obj/
taosdemo/bin/
taosdemo/obj/
jsonTag/bin/
jsonTag/obj/
insertCn/bin/
insertCn/obj/
\ No newline at end of file
examples/C#/C#checker/C#checker.cs 0 → 100644
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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/>.
*/
using System;
using System.Text;
using System.Collections.Generic;
using System.Runtime.InteropServices;
using System.Collections;
namespace TDengineDriver
{
class TDengineTest
{
//connect parameters
private string host;
private string configDir;
private string user;
private string password;
private short port = 0;
//sql parameters
private string dbName;
private string tbName;
private string precision;
private bool isInsertData;
private bool isQueryData;
private long tableCount;
private long totalRows;
private long batchRows;
private long beginTimestamp = 1551369600000L;
private IntPtr conn = IntPtr.Zero;
private long rowsInserted = 0;
static void Main(string[] args)
{
TDengineTest tester = new TDengineTest();
tester.ReadArgument(args);
tester.InitTDengine();
tester.ConnectTDengine();
tester.createDatabase();
tester.useDatabase();
tester.checkDropTable();
tester.createTable();
tester.checkInsert();
tester.checkSelect();
tester.checkDropTable();
tester.dropDatabase();
tester.CloseConnection();
tester.cleanup();
}
public long GetArgumentAsLong(String[] argv, String argName, int minVal, int maxVal, int defaultValue)
{
int argc = argv.Length;
for (int i = 0; i < argc; ++i)
{
if (argName != argv[i])
{
continue;
}
if (i < argc - 1)
{
String tmp = argv[i + 1];
if (tmp[0] == '-')
{
Console.WriteLine("option {0:G} requires an argument", tmp);
ExitProgram();
}
long tmpVal = Convert.ToInt64(tmp);
if (tmpVal < minVal || tmpVal > maxVal)
{
Console.WriteLine("option {0:G} should in range [{1:G}, {2:G}]", argName, minVal, maxVal);
ExitProgram();
}
return tmpVal;
}
}
return defaultValue;
}
public String GetArgumentAsString(String[] argv, String argName, String defaultValue)
{
int argc = argv.Length;
for (int i = 0; i < argc; ++i)
{
if (argName != argv[i])
{
continue;
}
if (i < argc - 1)
{
String tmp = argv[i + 1];
if (tmp[0] == '-')
{
Console.WriteLine("option {0:G} requires an argument", tmp);
ExitProgram();
}
return tmp;
}
}
return defaultValue;
}
public void PrintHelp(String[] argv)
{
for (int i = 0; i < argv.Length; ++i)
{
if ("--help" == argv[i])
{
String indent = " ";
Console.WriteLine("taosTest is simple example to operate TDengine use C# Language.\n");
Console.WriteLine("{0:G}{1:G}", indent, "-h");
Console.WriteLine("{0:G}{1:G}{2:G}", indent, indent, "TDEngine server IP address to connect");
Console.WriteLine("{0:G}{1:G}", indent, "-u");
Console.WriteLine("{0:G}{1:G}{2:G}", indent, indent, "The TDEngine user name to use when connecting to the server, default is root");
Console.WriteLine("{0:G}{1:G}", indent, "-p");
Console.WriteLine("{0:G}{1:G}{2:G}", indent, indent, "The TDEngine user name to use when connecting to the server, default is taosdata");
Console.WriteLine("{0:G}{1:G}", indent, "-d");
Console.WriteLine("{0:G}{1:G}{2:G}", indent, indent, "Database used to create table or import data, default is db");
Console.WriteLine("{0:G}{1:G}", indent, "-s");
Console.WriteLine("{0:G}{1:G}{2:G}", indent, indent, "Super Tables used to create table, default is mt");
Console.WriteLine("{0:G}{1:G}", indent, "-t");
Console.WriteLine("{0:G}{1:G}{2:G}", indent, indent, "Table prefixs, default is t");
Console.WriteLine("{0:G}{1:G}", indent, "-w");
Console.WriteLine("{0:G}{1:G}{2:G}", indent, indent, "Whether to insert data");
Console.WriteLine("{0:G}{1:G}", indent, "-r");
Console.WriteLine("{0:G}{1:G}{2:G}", indent, indent, "Whether to query data");
Console.WriteLine("{0:G}{1:G}", indent, "-n");
Console.WriteLine("{0:G}{1:G}{2:G}", indent, indent, "How many Tables to create, default is 10");
Console.WriteLine("{0:G}{1:G}", indent, "-b");
Console.WriteLine("{0:G}{1:G}{2:G}", indent, indent, "How many rows per insert batch, default is 10");
Console.WriteLine("{0:G}{1:G}", indent, "-i");
Console.WriteLine("{0:G}{1:G}{2:G}", indent, indent, "How many rows to insert, default is 100");
Console.WriteLine("{0:G}{1:G}", indent, "-c");
Console.WriteLine("{0:G}{1:G}{2:G}", indent, indent, "Configuration directory");
//
Console.WriteLine("{0:G}{1:G}", indent, "-ps");
Console.WriteLine("{0:G}{1:G}{2:G}", indent, indent, "Configurate db precision,default millisecond");
ExitProgram();
}
}
}
public void ReadArgument(String[] argv)
{
PrintHelp(argv);
host = this.GetArgumentAsString(argv, "-h", "127.0.0.1");
user = this.GetArgumentAsString(argv, "-u", "root");
password = this.GetArgumentAsString(argv, "-p", "taosdata");
dbName = this.GetArgumentAsString(argv, "-d", "test");
tbName = this.GetArgumentAsString(argv, "-s", "weather");
precision = this.GetArgumentAsString(argv, "-ps", "ms");
isInsertData = this.GetArgumentAsLong(argv, "-w", 0, 1, 1) != 0;
isQueryData = this.GetArgumentAsLong(argv, "-r", 0, 1, 1) != 0;
tableCount = this.GetArgumentAsLong(argv, "-n", 1, 10000, 10);
batchRows = this.GetArgumentAsLong(argv, "-b", 1, 1000, 500);
totalRows = this.GetArgumentAsLong(argv, "-i", 1, 10000000, 10000);
configDir = this.GetArgumentAsString(argv, "-c", "C:/TDengine/cfg");
}
public void InitTDengine()
{
TDengine.Options((int)TDengineInitOption.TDDB_OPTION_CONFIGDIR, this.configDir);
TDengine.Options((int)TDengineInitOption.TDDB_OPTION_SHELL_ACTIVITY_TIMER, "60");
Console.WriteLine("init...");
TDengine.Init();
Console.WriteLine("get connection starting...");
}
public void ConnectTDengine()
{
string db = "";
this.conn = TDengine.Connect(this.host, this.user, this.password, db, this.port);
if (this.conn == IntPtr.Zero)
{
Console.WriteLine("connection failed: " + this.host);
ExitProgram();
}
else
{
Console.WriteLine("[ OK ] Connection established.");
}
}
public void createDatabase()
{
StringBuilder sql = new StringBuilder();
sql.Append("create database if not exists ").Append(this.dbName).Append(" precision '").Append(this.precision).Append("'");
execute(sql.ToString());
}
public void useDatabase()
{
StringBuilder sql = new StringBuilder();
sql.Append("use ").Append(this.dbName);
execute(sql.ToString());
}
public void checkSelect()
{
StringBuilder sql = new StringBuilder();
sql.Append("select * from ").Append(this.dbName).Append(".").Append(this.tbName);
ExecuteQuery(sql.ToString());
}
public void createTable()
{
StringBuilder sql = new StringBuilder();
sql.Append("create table if not exists ").Append(this.dbName).Append(".").Append(this.tbName).Append("(ts timestamp, temperature float, humidity int)");
execute(sql.ToString());
}
public void checkInsert()
{
StringBuilder sql = new StringBuilder();
sql.Append("insert into ").Append(this.dbName).Append(".").Append(this.tbName).Append("(ts, temperature, humidity) values(now, 20.5, 34)");
execute(sql.ToString());
}
public void checkDropTable()
{
StringBuilder sql = new StringBuilder();
sql.Append("drop table if exists ").Append(this.dbName).Append(".").Append(this.tbName).Append("");
execute(sql.ToString());
}
public void dropDatabase()
{
StringBuilder sql = new StringBuilder();
sql.Append("drop database if exists ").Append(this.dbName);
execute(sql.ToString());
}
public void execute(string sql)
{
DateTime dt1 = DateTime.Now;
IntPtr res = TDengine.Query(this.conn, sql.ToString());
DateTime dt2 = DateTime.Now;
TimeSpan span = dt2 - dt1;
if ((res == IntPtr.Zero) || (TDengine.ErrorNo(res) != 0))
{
Console.Write(sql.ToString() + " failure, ");
if (res != IntPtr.Zero) {
Console.Write("reason: " + TDengine.Error(res));
}
Console.WriteLine("");
ExitProgram();
}
else
{
Console.WriteLine(sql.ToString() + " success");
}
TDengine.FreeResult(res);
}
public void ExecuteQuery(string sql)
{
DateTime dt1 = DateTime.Now;
long queryRows = 0;
IntPtr res = TDengine.Query(conn, sql);
getPrecision(res);
if ((res == IntPtr.Zero) || (TDengine.ErrorNo(res) != 0))
{
Console.Write(sql.ToString() + " failure, ");
if (res != IntPtr.Zero) {
Console.Write("reason: " + TDengine.Error(res));
}
Console.WriteLine("");
ExitProgram();
}
DateTime dt2 = DateTime.Now;
TimeSpan span = dt2 - dt1;
Console.WriteLine("[OK] time cost: " + span.ToString() + "ms, execute statement ====> " + sql.ToString());
int fieldCount = TDengine.FieldCount(res);
List<TDengineMeta> metas = TDengine.FetchFields(res);
for (int j = 0; j < metas.Count; j++)
{
TDengineMeta meta = (TDengineMeta)metas[j];
}
IntPtr rowdata;
StringBuilder builder = new StringBuilder();
while ((rowdata = TDengine.FetchRows(res)) != IntPtr.Zero)
{
queryRows++;
for (int fields = 0; fields < fieldCount; ++fields)
{
TDengineMeta meta = metas[fields];
int offset = IntPtr.Size * fields;
IntPtr data = Marshal.ReadIntPtr(rowdata, offset);
builder.Append("---");
if (data == IntPtr.Zero)
{
builder.Append("NULL");
continue;
}
switch ((TDengineDataType)meta.type)
{
case TDengineDataType.TSDB_DATA_TYPE_BOOL:
bool v1 = Marshal.ReadByte(data) == 0 ? false : true;
builder.Append(v1);
break;
case TDengineDataType.TSDB_DATA_TYPE_TINYINT:
byte v2 = Marshal.ReadByte(data);
builder.Append(v2);
break;
case TDengineDataType.TSDB_DATA_TYPE_SMALLINT:
short v3 = Marshal.ReadInt16(data);
builder.Append(v3);
break;
case TDengineDataType.TSDB_DATA_TYPE_INT:
int v4 = Marshal.ReadInt32(data);
builder.Append(v4);
break;
case TDengineDataType.TSDB_DATA_TYPE_BIGINT:
long v5 = Marshal.ReadInt64(data);
builder.Append(v5);
break;
case TDengineDataType.TSDB_DATA_TYPE_FLOAT:
float v6 = (float)Marshal.PtrToStructure(data, typeof(float));
builder.Append(v6);
break;
case TDengineDataType.TSDB_DATA_TYPE_DOUBLE:
double v7 = (double)Marshal.PtrToStructure(data, typeof(double));
builder.Append(v7);
break;
case TDengineDataType.TSDB_DATA_TYPE_BINARY:
string v8 = Marshal.PtrToStringAnsi(data);
builder.Append(v8);
break;
case TDengineDataType.TSDB_DATA_TYPE_TIMESTAMP:
long v9 = Marshal.ReadInt64(data);
builder.Append(v9);
break;
case TDengineDataType.TSDB_DATA_TYPE_NCHAR:
string v10 = Marshal.PtrToStringAnsi(data);
builder.Append(v10);
break;
}
}
builder.Append("---");
if (queryRows <= 10)
{
Console.WriteLine(builder.ToString());
}
builder.Clear();
}
if (TDengine.ErrorNo(res) != 0)
{
Console.Write("Query is not complete, Error {0:G}", TDengine.ErrorNo(res), TDengine.Error(res));
}
Console.WriteLine("");
TDengine.FreeResult(res);
}
public void CloseConnection()
{
if (this.conn != IntPtr.Zero)
{
TDengine.Close(this.conn);
Console.WriteLine("connection closed.");
}
}
static void ExitProgram()
{
System.Environment.Exit(0);
}
public void cleanup()
{
Console.WriteLine("clean up...");
System.Environment.Exit(0);
}
// method to get db precision
public void getPrecision(IntPtr res)
{
int psc=TDengine.ResultPrecision(res);
switch(psc)
{
case 0:
Console.WriteLine("db：[{0:G}]'s precision is {1:G}",this.dbName,"millisecond");
break;
case 1:
Console.WriteLine("db：[{0:G}]'s precision is {1:G}",this.dbName,"microsecond");
break;
case 2:
Console.WriteLine("db：[{0:G}]'s precision is {1:G}",this.dbName,"nanosecond");
break;
}
}
}
}
examples/C#/C#checker/C#checker.csproj 0 → 100644
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<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>net5.0</TargetFramework>
<RootNamespace>C_checker</RootNamespace>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="TDengine.Connector" Version="1.0.2" />
</ItemGroup>
</Project>
examples/C#/TDengineTest/TDengineTest.cs 0 → 100644
浏览文件 @ 9d97d89e
此差异已折叠。
examples/C#/TDengineTest/TDengineTest.csproj 0 → 100644
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<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>net5.0</TargetFramework>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="TDengine.Connector" Version="1.0.2" />
</ItemGroup>
</Project>
examples/C#/insertCn/Program.cs 0 → 100644
浏览文件 @ 9d97d89e
using System;
using Test.UtilsTools;
using System.Runtime.InteropServices;
using System.Collections.Generic;
using Test.UtilsTools.ResultSet;
namespace insertCn
{
class Program
{
static void Main(string[] args)
{
Console.WriteLine("Hello World!");
IntPtr conn = UtilsTools.TDConnection();
string dbName = "insert_cn_to_nchar_sample_dotnet";
string createDB = $"create database if not exists {dbName};";
string dropDB = $"drop database if exists {dbName};";
string useDB = $"use {dbName};";
string table = "t1";
string stable = "stb";
UtilsTools.ExecuteUpdate(conn,createDB);
UtilsTools.ExecuteUpdate(conn,useDB);
Console.WriteLine("=====================ntable====================");
TestNtable(conn,table);
Console.WriteLine("=====================stable====================");
TestStable(conn,stable);
UtilsTools.ExecuteUpdate(conn,dropDB);
UtilsTools.CloseConnection(conn);
}
static void TestStable(IntPtr conn,string stable)
{
string createSql = $"create table if not exists {stable} (ts timestamp," +
$"v4 int," +
$"blob nchar(200)," +
$"locate nchar(200)," +
$"country binary(200)," +
$"city binary(50)" +
$")tags(" +
$"id int," +
$"name nchar(50)," +
$"addr nchar(200)," +
$"en_name binary(200));";
String dropTb = "drop table if exists " + stable;
String table = stable + "_subtable_1";
var colData = new List<Object>{1637064040000,1,"涛思数据","保利广场","Beijing","China",
1637064041000,2,"涛思数据taosdata","保利广场baoli","Beijing","China",
1637064042000,3,"TDegnine涛思数据","time广场","NewYork","US",
1637064043000,4,"4涛思数据","4广场南部","London","UK",
1637064044000,5,"涛思数据5","!广场路中部123","Tokyo","JP",
1637064045000,6,"taos涛思数据6","青年广场123号！","Washin","DC",
1637064046000,7,"7涛思数据taos","asdf#壮年广场%#endregion","NewYork","US",
1637064047000,8,"8&涛思数据taos","incluse阿斯顿发","NewYork","US",
1637064048000,9,"&涛思数据taos9","123黑化肥werq会挥……&¥%发！afsdfa","NewYork","US",
};
var tagData = new List<Object>{1,"涛思数据","中国北方&南方长江黄河！49wq","tdengine"};
string insertSql = UtilsTools.ConstructInsertSql(table, stable, colData, tagData, 9);
string selectSql = $"select * from {stable};";
List<Object> insertData = UtilsTools.CombineColAndTagData(colData,tagData,9);
UtilsTools.ExecuteUpdate(conn,dropTb);
UtilsTools.ExecuteUpdate(conn,createSql);
UtilsTools.ExecuteUpdate(conn,insertSql);
IntPtr res = UtilsTools.ExecuteQuery(conn,selectSql);
ResultSet resultSet = new ResultSet(res);
List<Object> queryResult = resultSet.GetResultData();
//display
int fieldsCount = resultSet.GetFieldsNum();
for(int i = 0 ; i<queryResult.Count;i++){
Console.Write(queryResult[i].ToString());
Console.Write("\t");
if((i+1)%fieldsCount == 0)
{
Console.WriteLine("");
}
}
if(insertData.Count == queryResult.Count)
{
Console.WriteLine("insert data count = retrieve data count");
for(int i = 0 ; i<queryResult.Count;i++)
{
if(!queryResult[i].Equals(insertData[i]))
{
Console.Write("[Unequal Data]");
Console.WriteLine("InsertData:{0},QueryData:{1}",queryResult[i],insertData[i]);
}
}
}
}
static void TestNtable(IntPtr conn,string tableName)
{
var colData = new List<Object>{1637064040000,1,"涛思数据","保利广场","Beijing","China",
1637064041000,2,"涛思数据taosdata","保利广场baoli","Beijing","China",
1637064042000,3,"TDegnine涛思数据","time广场","NewYork","US",
1637064043000,4,"4涛思数据","4广场南部","London","UK",
1637064044000,5,"涛思数据5","!广场路中部123","Tokyo","JP",
1637064045000,6,"taos涛思数据6","青年广场123号！","Washin","DC",
1637064046000,7,"7涛思数据taos","asdf#壮年广场%#endregion","NewYork","US",
1637064047000,8,"8&涛思数据taos","incluse阿斯顿发","NewYork","US",
1637064048000,9,"&涛思数据taos9","123黑化肥werq会挥……&¥%发！afsdfa","NewYork","US",
};
String dropTb = "drop table if exists " + tableName;
String createTb = $"create table if not exists {tableName} (ts timestamp,v4 int,blob nchar(200),location nchar(200),city binary(100),coutry nchar(200));";
String insertSql = UtilsTools.ConstructInsertSql(tableName, "", colData, null, 9);
String selectSql = "select * from " + tableName;
UtilsTools.ExecuteUpdate(conn, dropTb);
UtilsTools.ExecuteUpdate(conn, createTb);
UtilsTools.ExecuteUpdate(conn, insertSql);
IntPtr res = UtilsTools.ExecuteQuery(conn, selectSql);
ResultSet resultSet = new ResultSet(res);
List<Object> queryResult = resultSet.GetResultData();
int fieldsCount = resultSet.GetFieldsNum();
//display
for(int i = 0 ; i<queryResult.Count;i++){
Console.Write(queryResult[i].ToString());
Console.Write("\t");
if((i+1)%fieldsCount == 0)
{
Console.WriteLine("");
}
}
if(colData.Count == queryResult.Count)
{
Console.WriteLine("insert data count = retrieve data count");
for(int i = 0 ; i<queryResult.Count;i++)
{
if(!queryResult[i].Equals(colData[i]))
{
Console.Write("[Unequal Data]");
Console.WriteLine("InsertData:{0},QueryData:{1}",queryResult[i],colData[i]);
}
}
}
}
}
}
examples/C#/insertCn/TDengineDriver.cs 0 → 100644
浏览文件 @ 9d97d89e
/*
* 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/>.
*/
using System;
using System.Collections.Generic;
using System.Runtime.InteropServices;
namespace TDengineDriver
{
public enum TDengineDataType
{
TSDB_DATA_TYPE_NULL = 0, // 1 bytes
TSDB_DATA_TYPE_BOOL = 1, // 1 bytes
TSDB_DATA_TYPE_TINYINT = 2, // 1 bytes
TSDB_DATA_TYPE_SMALLINT = 3, // 2 bytes
TSDB_DATA_TYPE_INT = 4, // 4 bytes
TSDB_DATA_TYPE_BIGINT = 5, // 8 bytes
TSDB_DATA_TYPE_FLOAT = 6, // 4 bytes
TSDB_DATA_TYPE_DOUBLE = 7, // 8 bytes
TSDB_DATA_TYPE_BINARY = 8, // string
TSDB_DATA_TYPE_TIMESTAMP = 9,// 8 bytes
TSDB_DATA_TYPE_NCHAR = 10, // unicode string
TSDB_DATA_TYPE_UTINYINT = 11,// 1 byte
TSDB_DATA_TYPE_USMALLINT = 12,// 2 bytes
TSDB_DATA_TYPE_UINT = 13, // 4 bytes
TSDB_DATA_TYPE_UBIGINT = 14, // 8 bytes
TSDB_DATA_TYPE_JSONTAG = 15 //4096 bytes
}
public enum TDengineInitOption
{
TSDB_OPTION_LOCALE = 0,
TSDB_OPTION_CHARSET = 1,
TSDB_OPTION_TIMEZONE = 2,
TDDB_OPTION_CONFIGDIR = 3,
TDDB_OPTION_SHELL_ACTIVITY_TIMER = 4
}
enum TaosField
{
STRUCT_SIZE = 68,
NAME_LENGTH = 65,
TYPE_OFFSET = 65,
BYTES_OFFSET = 66,
}
public class TDengineMeta
{
public string name;
public short size;
public byte type;
public string TypeName()
{
switch ((TDengineDataType)type)
{
case TDengineDataType.TSDB_DATA_TYPE_BOOL:
return "BOOL";
case TDengineDataType.TSDB_DATA_TYPE_TINYINT:
return "TINYINT";
case TDengineDataType.TSDB_DATA_TYPE_SMALLINT:
return "SMALLINT";
case TDengineDataType.TSDB_DATA_TYPE_INT:
return "INT";
case TDengineDataType.TSDB_DATA_TYPE_BIGINT:
return "BIGINT";
case TDengineDataType.TSDB_DATA_TYPE_UTINYINT:
return "TINYINT UNSIGNED";
case TDengineDataType.TSDB_DATA_TYPE_USMALLINT:
return "SMALLINT UNSIGNED";
case TDengineDataType.TSDB_DATA_TYPE_UINT:
return "INT UNSIGNED";
case TDengineDataType.TSDB_DATA_TYPE_UBIGINT:
return "BIGINT UNSIGNED";
case TDengineDataType.TSDB_DATA_TYPE_FLOAT:
return "FLOAT";
case TDengineDataType.TSDB_DATA_TYPE_DOUBLE:
return "DOUBLE";
case TDengineDataType.TSDB_DATA_TYPE_BINARY:
return "BINARY";
case TDengineDataType.TSDB_DATA_TYPE_TIMESTAMP:
return "TIMESTAMP";
case TDengineDataType.TSDB_DATA_TYPE_NCHAR:
return "NCHAR";
case TDengineDataType.TSDB_DATA_TYPE_JSONTAG:
return "JSON";
default:
return "undefine";
}
}
}
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
public struct TAOS_BIND
{
// column type
public int buffer_type;
// one column value
public IntPtr buffer;
// unused
public Int32 buffer_length;
// actual value length in buffer
public IntPtr length;
// indicates the column value is null or not
public IntPtr is_null;
// unused
public int is_unsigned;
// unused
public IntPtr error;
public Int64 u;
public uint allocated;
}
[StructLayout(LayoutKind.Sequential)]
public struct TAOS_MULTI_BIND
{
// column type
public int buffer_type;
// array, one or more lines column value
public IntPtr buffer;
//length of element in TAOS_MULTI_BIND.buffer (for binary and nchar it is the longest element's length)
public ulong buffer_length;
//array, actual data length for each value
public IntPtr length;
//array, indicates each column value is null or not
public IntPtr is_null;
// line number, or the values number in buffer
public int num;
}
public class TDengine
{
public const int TSDB_CODE_SUCCESS = 0;
[DllImport("taos", EntryPoint = "taos_init", CallingConvention = CallingConvention.Cdecl)]
static extern public void Init();
[DllImport("taos", EntryPoint = "taos_cleanup", CallingConvention = CallingConvention.Cdecl)]
static extern public void Cleanup();
[DllImport("taos", EntryPoint = "taos_options", CallingConvention = CallingConvention.Cdecl)]
static extern public void Options(int option, string value);
[DllImport("taos", EntryPoint = "taos_connect", CallingConvention = CallingConvention.Cdecl)]
static extern public IntPtr Connect(string ip, string user, string password, string db, short port);
[DllImport("taos", EntryPoint = "taos_errstr", CallingConvention = CallingConvention.Cdecl)]
static extern private IntPtr taos_errstr(IntPtr res);
static public string Error(IntPtr res)
{
IntPtr errPtr = taos_errstr(res);
return Marshal.PtrToStringAnsi(errPtr);
}
[DllImport("taos", EntryPoint = "taos_errno", CallingConvention = CallingConvention.Cdecl)]
static extern public int ErrorNo(IntPtr res);
[DllImport("taos", EntryPoint = "taos_query", CallingConvention = CallingConvention.Cdecl)]
// static extern public IntPtr Query(IntPtr conn, string sqlstr);
static extern private IntPtr Query(IntPtr conn, IntPtr byteArr);
static public IntPtr Query(IntPtr conn,string command)
{
IntPtr res = IntPtr.Zero;
IntPtr commandBuffer = Marshal.StringToCoTaskMemUTF8(command);
res = Query(conn,commandBuffer);
return res;
}
[DllImport("taos", EntryPoint = "taos_affected_rows", CallingConvention = CallingConvention.Cdecl)]
static extern public int AffectRows(IntPtr res);
[DllImport("taos", EntryPoint = "taos_field_count", CallingConvention = CallingConvention.Cdecl)]
static extern public int FieldCount(IntPtr res);
[DllImport("taos", EntryPoint = "taos_fetch_fields", CallingConvention = CallingConvention.Cdecl)]
static extern private IntPtr taos_fetch_fields(IntPtr res);
static public List<TDengineMeta> FetchFields(IntPtr res)
{
// const int fieldSize = 68;
List<TDengineMeta> metas = new List<TDengineMeta>();
if (res == IntPtr.Zero)
{
return metas;
}
int fieldCount = FieldCount(res);
IntPtr fieldsPtr = taos_fetch_fields(res);
for (int i = 0; i < fieldCount; ++i)
{
int offset = i * (int)TaosField.STRUCT_SIZE;
TDengineMeta meta = new TDengineMeta();
meta.name = Marshal.PtrToStringAnsi(fieldsPtr + offset);
meta.type = Marshal.ReadByte(fieldsPtr + offset + (int)TaosField.TYPE_OFFSET);
meta.size = Marshal.ReadInt16(fieldsPtr + offset + (int)TaosField.BYTES_OFFSET);
metas.Add(meta);
}
return metas;
}
[DllImport("taos", EntryPoint = "taos_fetch_row", CallingConvention = CallingConvention.Cdecl)]
static extern public IntPtr FetchRows(IntPtr res);
[DllImport("taos", EntryPoint = "taos_free_result", CallingConvention = CallingConvention.Cdecl)]
static extern public IntPtr FreeResult(IntPtr res);
[DllImport("taos", EntryPoint = "taos_close", CallingConvention = CallingConvention.Cdecl)]
static extern public int Close(IntPtr taos);
//get precision of restultset
[DllImport("taos", EntryPoint = "taos_result_precision", CallingConvention = CallingConvention.Cdecl)]
static extern public int ResultPrecision(IntPtr taos);
//stmt APIs:
/// <summary>
/// init a TAOS_STMT object for later use.
/// </summary>
/// <param name="taos">a valid taos connection</param>
/// <returns>
/// Not NULL returned for success, NULL for failure. And it should be freed with taos_stmt_close.
/// </returns>
[DllImport("taos", EntryPoint = "taos_stmt_init", CallingConvention = CallingConvention.Cdecl)]
static extern public IntPtr StmtInit(IntPtr taos);
/// <summary>
/// prepare a sql statement，'sql' should be a valid INSERT/SELECT statement.
/// </summary>
/// <param name="stmt">could be the value returned by 'StmtInit', that may be a valid object or NULL.</param>
/// <param name="sql">sql string,used to bind parameters with</param>
/// <param name="length">no used</param>
/// <returns>0 for success, non-zero for failure.</returns>
[DllImport("taos", EntryPoint = "taos_stmt_prepare", CallingConvention = CallingConvention.Cdecl)]
static extern public int StmtPrepare(IntPtr stmt, string sql);
/// <summary>
/// For INSERT only. Used to bind table name as a parmeter for the input stmt object.
/// </summary>
/// <param name="stmt">could be the value returned by 'StmtInit', that may be a valid object or NULL.</param>
/// <param name="name">table name you want to bind</param>
/// <returns>0 for success, non-zero for failure.</returns>
[DllImport("taos", EntryPoint = "taos_stmt_set_tbname", CallingConvention = CallingConvention.Cdecl)]
static extern public int StmtSetTbname(IntPtr stmt, string name);
/// <summary>
/// For INSERT only.
/// Set a table name for binding table name as parameter. Only used for binding all tables
/// in one stable, user application must call 'loadTableInfo' API to load all table
/// meta before calling this API. If the table meta is not cached locally, it will return error.
/// </summary>
/// <param name="stmt">could be the value returned by 'StmtInit', that may be a valid object or NULL.</param>
/// <param name="name">table name which is belong to an stable</param>
/// <returns>0 for success, non-zero for failure.</returns>
[DllImport("taos", EntryPoint = "taos_stmt_set_sub_tbname", CallingConvention = CallingConvention.Cdecl)]
static extern public int StmtSetSubTbname(IntPtr stmt, string name);
/// <summary>
/// For INSERT only.
/// set a table name for binding table name as parameter and tag values for all tag parameters.
/// </summary>
/// <param name="stmt">could be the value returned by 'StmtInit', that may be a valid object or NULL.</param>
/// <param name="name">use to set table name</param>
/// <param name="tags">
/// is an array contains all tag values,each item in the array represents a tag column's value.
/// the item number and sequence should keep consistence with that in stable tag definition.
/// </param>
/// <returns>0 for success, non-zero for failure.</returns>
[DllImport("taos", EntryPoint = "taos_stmt_set_tbname_tags", CallingConvention = CallingConvention.Cdecl)]
static extern public int StmtSetTbnameTags(IntPtr stmt, string name, TAOS_BIND[] tags);
/// <summary>
/// For both INSERT and SELECT.
/// bind a whole line data.
/// The usage of structure TAOS_BIND is the same with MYSQL_BIND in MySQL.
/// </summary>
/// <param name="stmt">could be the value returned by 'StmtInit', that may be a valid object or NULL.</param>
/// <param name="bind">
/// points to an array contains the whole line data.
/// the item number and sequence should keep consistence with columns in sql statement.
/// </param>
/// <returns>0 for success, non-zero for failure.</returns>
[DllImport("taos", EntryPoint = "taos_stmt_bind_param", CallingConvention = CallingConvention.Cdecl, SetLastError = true)]
static extern public int StmtBindParam(IntPtr stmt, TAOS_BIND[] bind);
/// <summary>
/// bind a single column's data, INTERNAL used and for INSERT only.
/// </summary>
/// <param name="stmt">could be the value returned by 'StmtInit', that may be a valid object or NULL.</param>
/// <param name="bind">points to a column's data which could be the one or more lines. </param>
/// <param name="colIdx">the column's index in prepared sql statement, it starts from 0.</param>
/// <returns>0 for success, non-zero for failure.</returns>
[DllImport("taos", EntryPoint = "taos_stmt_bind_single_param_batch", CallingConvention = CallingConvention.Cdecl)]
static extern public int StmtBindSingleParamBatch(IntPtr stmt, ref TAOS_MULTI_BIND bind, int colIdx);
/// <summary>
/// for INSERT only
/// bind one or multiple lines data. The parameter 'bind'
/// </summary>
/// <param name="stmt">could be the value returned by 'StmtInit', that may be a valid object or NULL.</param>
/// <param name="bind">
/// points to an array contains one or more lines data.Each item in array represents a column's value(s),
/// the item number and sequence should keep consistence with columns in sql statement.
/// </param>
/// <returns>0 for success, non-zero for failure.</returns>
[DllImport("taos", EntryPoint = "taos_stmt_bind_param_batch", CallingConvention = CallingConvention.Cdecl)]
static extern public int StmtBindParamBatch(IntPtr stmt, [In, Out] TAOS_MULTI_BIND[] bind);
/// <summary>
/// For INSERT only.
/// add all current bound parameters to batch process. Must be called after each call to
/// StmtBindParam/StmtBindSingleParamBatch, or all columns binds for one or more lines
/// with StmtBindSingleParamBatch. User application can call any bind parameter
/// API again to bind more data lines after calling to this API.
/// </summary>
/// <param name="stmt">could be the value returned by 'StmtInit', that may be a valid object or NULL.</param>
/// <returns>0 for success, non-zero for failure.</returns>
[DllImport("taos", EntryPoint = "taos_stmt_add_batch", CallingConvention = CallingConvention.Cdecl)]
static extern public int StmtAddBatch(IntPtr stmt);
/// <summary>
/// actually execute the INSERT/SELECT sql statement.
/// User application can continue to bind new data after calling to this API.
/// </summary>
/// <param name="stmt">could be the value returned by 'StmtInit', that may be a valid object or NULL.</param>
/// <returns></returns>
[DllImport("taos", EntryPoint = "taos_stmt_execute", CallingConvention = CallingConvention.Cdecl)]
static extern public int StmtExecute(IntPtr stmt);
/// <summary>
/// For SELECT only,getting the query result. User application should free it with API 'FreeResult' at the end.
/// </summary>
/// <param name="stmt">could be the value returned by 'StmtInit', that may be a valid object or NULL.</param>
/// <returns>Not NULL for success, NULL for failure.</returns>
[DllImport("taos", EntryPoint = "taos_stmt_use_result", CallingConvention = CallingConvention.Cdecl)]
static extern public IntPtr StmtUseResult(IntPtr stmt);
/// <summary>
/// close STMT object and free resources.
/// </summary>
/// <param name="stmt">could be the value returned by 'StmtInit', that may be a valid object or NULL.</param>
/// <returns>0 for success, non-zero for failure.</returns>
[DllImport("taos", EntryPoint = "taos_stmt_close", CallingConvention = CallingConvention.Cdecl)]
static extern public int StmtClose(IntPtr stmt);
[DllImport("taos", EntryPoint = "taos_load_table_info", CallingConvention = CallingConvention.Cdecl)]
/// <summary>
/// user application must call this API to load all tables meta,
/// </summary>
/// <param name="taos">taos connection</param>
/// <param name="tableList">tablelist</param>
/// <returns></returns>
static extern private int LoadTableInfoDll(IntPtr taos, string tableList);
/// <summary>
/// user application call this API to load all tables meta,this method call the native
/// method LoadTableInfoDll.
/// this method must be called before StmtSetSubTbname(IntPtr stmt, string name);
/// </summary>
/// <param name="taos">taos connection</param>
/// <param name="tableList">tables need to load meta info are form in an array</param>
/// <returns></returns>
static public int LoadTableInfo(IntPtr taos, string[] tableList)
{
string listStr = string.Join(",", tableList);
return LoadTableInfoDll(taos, listStr);
}
/// <summary>
/// get detail error message when got failure for any stmt API call. If not failure, the result
/// returned in this API is unknown.
/// </summary>
/// <param name="stmt">could be the value returned by 'StmtInit', that may be a valid object or NULL.</param>
/// <returns>piont the error message</returns>
[DllImport("taos", EntryPoint = "taos_stmt_errstr", CallingConvention = CallingConvention.Cdecl)]
static extern private IntPtr StmtErrPtr(IntPtr stmt);
/// <summary>
/// get detail error message when got failure for any stmt API call. If not failure, the result
/// returned in this API is unknown.
/// </summary>
/// <param name="stmt">could be the value returned by 'StmtInit', that may be a valid object or NULL.</param>
/// <returns>error string</returns>
static public string StmtErrorStr(IntPtr stmt)
{
IntPtr stmtErrPrt = StmtErrPtr(stmt);
return Marshal.PtrToStringAnsi(stmtErrPrt);
}
[DllImport("taos", EntryPoint = "taos_fetch_lengths", CallingConvention = CallingConvention.Cdecl)]
static extern public IntPtr FetchLengths(IntPtr taos);
}
}
examples/C#/insertCn/insertCn.csproj 0 → 100644
浏览文件 @ 9d97d89e
<Project Sdk="Microsoft.NET.Sdk">
<!-- <ItemGroup>
<ProjectReference Include="..\src\TDengineDriver\TDengineDriver.csproj" />
</ItemGroup> -->
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>net5.0</TargetFramework>
</PropertyGroup>
</Project>
examples/C#/jsonTag/JsonTag.cs 0 → 100644
浏览文件 @ 9d97d89e
此差异已折叠。
examples/C#/jsonTag/Util.cs 0 → 100644
浏览文件 @ 9d97d89e
using System;
using TDengineDriver;
using System.Runtime.InteropServices;
using System.Text;
using System.Collections.Generic;
namespace Utils
{
public class UtilsTools
{
static string configDir = "/etc/taos";//"C:/TDengine/cfg";
public static IntPtr TDConnection(string ip, string user, string password, string db, short port)
{
TDengine.Options((int)TDengineInitOption.TDDB_OPTION_CONFIGDIR, configDir);
TDengine.Options((int)TDengineInitOption.TDDB_OPTION_SHELL_ACTIVITY_TIMER, "60");
TDengine.Init();
return TDengine.Connect(ip, user, password, db, port);
}
public static IntPtr ExecuteQuery(IntPtr conn, String sql)
{
IntPtr res = TDengine.Query(conn, sql);
if ((res == IntPtr.Zero) || (TDengine.ErrorNo(res) != 0))
{
Console.Write(sql.ToString() + " failure, ");
if (res != IntPtr.Zero)
{
Console.Write("reason: " + TDengine.Error(res));
}
Console.WriteLine("");
ExitProgram();
}
else
{
Console.WriteLine(sql.ToString() + " success");
}
return res;
}
public static IntPtr ExecuteErrorQuery(IntPtr conn, String sql)
{
IntPtr res = TDengine.Query(conn, sql);
if ((res == IntPtr.Zero) || (TDengine.ErrorNo(res) != 0))
{
Console.Write(sql.ToString() + " failure, ");
if (res != IntPtr.Zero)
{
Console.Write("reason: " + TDengine.Error(res));
}
Console.WriteLine("");
}
else
{
Console.WriteLine(sql.ToString() + " success");
}
return res;
}
public static void ExecuteUpdate(IntPtr conn, String sql)
{
IntPtr res = TDengine.Query(conn, sql);
if ((res == IntPtr.Zero) || (TDengine.ErrorNo(res) != 0))
{
Console.Write(sql.ToString() + " failure, ");
if (res != IntPtr.Zero)
{
Console.Write("reason: " + TDengine.Error(res));
}
Console.WriteLine("");
ExitProgram();
}
else
{
Console.WriteLine(sql.ToString() + " success");
}
TDengine.FreeResult(res);
}
public static void DisplayRes(IntPtr res)
{
long queryRows = 0;
if ((res == IntPtr.Zero) || (TDengine.ErrorNo(res) != 0))
{
if (res != IntPtr.Zero)
{
Console.Write("reason: " + TDengine.Error(res));
}
Console.WriteLine("");
ExitProgram();
}
int fieldCount = TDengine.FieldCount(res);
List<TDengineMeta> metas = TDengine.FetchFields(res);
for (int j = 0; j < metas.Count; j++)
{
TDengineMeta meta = (TDengineMeta)metas[j];
}
IntPtr rowdata;
StringBuilder builder = new StringBuilder();
while ((rowdata = TDengine.FetchRows(res)) != IntPtr.Zero)
{
queryRows++;
IntPtr colLengthPtr = TDengine.FetchLengths(res);
int[] colLengthArr = new int[fieldCount];
Marshal.Copy(colLengthPtr, colLengthArr, 0, fieldCount);
for (int fields = 0; fields < fieldCount; ++fields)
{
TDengineMeta meta = metas[fields];
int offset = IntPtr.Size * fields;
IntPtr data = Marshal.ReadIntPtr(rowdata, offset);
builder.Append("---");
if (data == IntPtr.Zero)
{
builder.Append("NULL");
continue;
}
switch ((TDengineDataType)meta.type)
{
case TDengineDataType.TSDB_DATA_TYPE_BOOL:
bool v1 = Marshal.ReadByte(data) == 0 ? false : true;
builder.Append(v1);
break;
case TDengineDataType.TSDB_DATA_TYPE_TINYINT:
byte v2 = Marshal.ReadByte(data);
builder.Append(v2);
break;
case TDengineDataType.TSDB_DATA_TYPE_SMALLINT:
short v3 = Marshal.ReadInt16(data);
builder.Append(v3);
break;
case TDengineDataType.TSDB_DATA_TYPE_INT:
int v4 = Marshal.ReadInt32(data);
builder.Append(v4);
break;
case TDengineDataType.TSDB_DATA_TYPE_BIGINT:
long v5 = Marshal.ReadInt64(data);
builder.Append(v5);
break;
case TDengineDataType.TSDB_DATA_TYPE_FLOAT:
float v6 = (float)Marshal.PtrToStructure(data, typeof(float));
builder.Append(v6);
break;
case TDengineDataType.TSDB_DATA_TYPE_DOUBLE:
double v7 = (double)Marshal.PtrToStructure(data, typeof(double));
builder.Append(v7);
break;
case TDengineDataType.TSDB_DATA_TYPE_BINARY:
string v8 = Marshal.PtrToStringAnsi(data, colLengthArr[fields]);
builder.Append(v8);
break;
case TDengineDataType.TSDB_DATA_TYPE_TIMESTAMP:
long v9 = Marshal.ReadInt64(data);
builder.Append(v9);
break;
case TDengineDataType.TSDB_DATA_TYPE_NCHAR:
string v10 = Marshal.PtrToStringAnsi(data, colLengthArr[fields]);
builder.Append(v10);
break;
case TDengineDataType.TSDB_DATA_TYPE_JSONTAG:
string v11 = Marshal.PtrToStringAnsi(data);
builder.Append(v11);
break;
}
}
builder.Append("---");
if (queryRows <= 10)
{
Console.WriteLine(builder.ToString());
}
builder.Clear();
}
if (TDengine.ErrorNo(res) != 0)
{
Console.Write("Query is not complete, Error {0:G}", TDengine.ErrorNo(res), TDengine.Error(res));
}
TDengine.FreeResult(res); Console.WriteLine("");
}
public static bool IsValidResult(IntPtr res)
{
if ((res == IntPtr.Zero) || (TDengine.ErrorNo(res) != 0))
{
if (res != IntPtr.Zero)
{
Console.Write("reason: " + TDengine.Error(res));
return false;
}
Console.WriteLine("");
return false;
}
return true;
}
public static void CloseConnection(IntPtr conn)
{
if (conn != IntPtr.Zero)
{
if (TDengine.Close(conn) == 0)
{
Console.WriteLine("close connection sucess");
}
else
{
Console.WriteLine("close Connection failed");
}
}
}
public static void ExitProgram()
{
TDengine.Cleanup();
System.Environment.Exit(0);
}
}
}
\ No newline at end of file
examples/C#/jsonTag/jsonTag.csproj 0 → 100644
浏览文件 @ 9d97d89e
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>net5.0</TargetFramework>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="TDengine.Connector" Version="1.0.3" />
</ItemGroup>
</Project>
examples/C#/schemaless/TDengineDriver.cs 0 → 100644
浏览文件 @ 9d97d89e
/*
* 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/>.
*/
using System;
using System.Collections.Generic;
using System.Runtime.InteropServices;
namespace TDengineDriver
{
enum TDengineDataType
{
TSDB_DATA_TYPE_NULL = 0, // 1 bytes
TSDB_DATA_TYPE_BOOL = 1, // 1 bytes
TSDB_DATA_TYPE_TINYINT = 2, // 1 bytes
TSDB_DATA_TYPE_SMALLINT = 3, // 2 bytes
TSDB_DATA_TYPE_INT = 4, // 4 bytes
TSDB_DATA_TYPE_BIGINT = 5, // 8 bytes
TSDB_DATA_TYPE_FLOAT = 6, // 4 bytes
TSDB_DATA_TYPE_DOUBLE = 7, // 8 bytes
TSDB_DATA_TYPE_BINARY = 8, // string
TSDB_DATA_TYPE_TIMESTAMP = 9,// 8 bytes
TSDB_DATA_TYPE_NCHAR = 10, // unicode string
TSDB_DATA_TYPE_UTINYINT = 11,// 1 byte
TSDB_DATA_TYPE_USMALLINT = 12,// 2 bytes
TSDB_DATA_TYPE_UINT = 13, // 4 bytes
TSDB_DATA_TYPE_UBIGINT = 14 // 8 bytes
}
enum TDengineInitOption
{
TSDB_OPTION_LOCALE = 0,
TSDB_OPTION_CHARSET = 1,
TSDB_OPTION_TIMEZONE = 2,
TDDB_OPTION_CONFIGDIR = 3,
TDDB_OPTION_SHELL_ACTIVITY_TIMER = 4
}
enum TDengineSchemalessProtocol
{
TSDB_SML_UNKNOWN_PROTOCOL = 0,
TSDB_SML_LINE_PROTOCOL = 1,
TSDB_SML_TELNET_PROTOCOL = 2,
TSDB_SML_JSON_PROTOCOL = 3
}
enum TDengineSchemalessPrecision
{
TSDB_SML_TIMESTAMP_NOT_CONFIGURED = 0,
TSDB_SML_TIMESTAMP_HOURS = 1,
TSDB_SML_TIMESTAMP_MINUTES = 2,
TSDB_SML_TIMESTAMP_SECONDS = 3,
TSDB_SML_TIMESTAMP_MILLI_SECONDS = 4,
TSDB_SML_TIMESTAMP_MICRO_SECONDS = 5,
TSDB_SML_TIMESTAMP_NANO_SECONDS = 6
}
class TDengineMeta
{
public string name;
public short size;
public byte type;
public string TypeName()
{
switch ((TDengineDataType)type)
{
case TDengineDataType.TSDB_DATA_TYPE_BOOL:
return "BOOL";
case TDengineDataType.TSDB_DATA_TYPE_TINYINT:
return "TINYINT";
case TDengineDataType.TSDB_DATA_TYPE_SMALLINT:
return "SMALLINT";
case TDengineDataType.TSDB_DATA_TYPE_INT:
return "INT";
case TDengineDataType.TSDB_DATA_TYPE_BIGINT:
return "BIGINT";
case TDengineDataType.TSDB_DATA_TYPE_UTINYINT:
return "TINYINT UNSIGNED";
case TDengineDataType.TSDB_DATA_TYPE_USMALLINT:
return "SMALLINT UNSIGNED";
case TDengineDataType.TSDB_DATA_TYPE_UINT:
return "INT UNSIGNED";
case TDengineDataType.TSDB_DATA_TYPE_UBIGINT:
return "BIGINT UNSIGNED";
case TDengineDataType.TSDB_DATA_TYPE_FLOAT:
return "FLOAT";
case TDengineDataType.TSDB_DATA_TYPE_DOUBLE:
return "DOUBLE";
case TDengineDataType.TSDB_DATA_TYPE_BINARY:
return "STRING";
case TDengineDataType.TSDB_DATA_TYPE_TIMESTAMP:
return "TIMESTAMP";
case TDengineDataType.TSDB_DATA_TYPE_NCHAR:
return "NCHAR";
default:
return "undefine";
}
}
}
class TDengine
{
public const int TSDB_CODE_SUCCESS = 0;
[DllImport("taos", EntryPoint = "taos_init", CallingConvention = CallingConvention.Cdecl)]
static extern public void Init();
[DllImport("taos", EntryPoint = "taos_cleanup", CallingConvention = CallingConvention.Cdecl)]
static extern public void Cleanup();
[DllImport("taos", EntryPoint = "taos_options", CallingConvention = CallingConvention.Cdecl)]
static extern public void Options(int option, string value);
[DllImport("taos", EntryPoint = "taos_connect", CallingConvention = CallingConvention.Cdecl)]
static extern public IntPtr Connect(string ip, string user, string password, string db, short port);
[DllImport("taos", EntryPoint = "taos_errstr", CallingConvention = CallingConvention.Cdecl)]
static extern private IntPtr taos_errstr(IntPtr res);
static public string Error(IntPtr res)
{
IntPtr errPtr = taos_errstr(res);
return Marshal.PtrToStringAnsi(errPtr);
}
[DllImport("taos", EntryPoint = "taos_errno", CallingConvention = CallingConvention.Cdecl)]
static extern public int ErrorNo(IntPtr res);
[DllImport("taos", EntryPoint = "taos_query", CallingConvention = CallingConvention.Cdecl)]
static extern public IntPtr Query(IntPtr conn, string sqlstr);
[DllImport("taos", EntryPoint = "taos_affected_rows", CallingConvention = CallingConvention.Cdecl)]
static extern public int AffectRows(IntPtr res);
[DllImport("taos", EntryPoint = "taos_field_count", CallingConvention = CallingConvention.Cdecl)]
static extern public int FieldCount(IntPtr res);
[DllImport("taos", EntryPoint = "taos_fetch_fields", CallingConvention = CallingConvention.Cdecl)]
static extern private IntPtr taos_fetch_fields(IntPtr res);
static public List<TDengineMeta> FetchFields(IntPtr res)
{
const int fieldSize = 68;
List<TDengineMeta> metas = new List<TDengineMeta>();
if (res == IntPtr.Zero)
{
return metas;
}
int fieldCount = FieldCount(res);
IntPtr fieldsPtr = taos_fetch_fields(res);
for (int i = 0; i < fieldCount; ++i)
{
int offset = i * fieldSize;
TDengineMeta meta = new TDengineMeta();
meta.name = Marshal.PtrToStringAnsi(fieldsPtr + offset);
meta.type = Marshal.ReadByte(fieldsPtr + offset + 65);
meta.size = Marshal.ReadInt16(fieldsPtr + offset + 66);
metas.Add(meta);
}
return metas;
}
[DllImport("taos", EntryPoint = "taos_fetch_row", CallingConvention = CallingConvention.Cdecl)]
static extern public IntPtr FetchRows(IntPtr res);
[DllImport("taos", EntryPoint = "taos_free_result", CallingConvention = CallingConvention.Cdecl)]
static extern public IntPtr FreeResult(IntPtr res);
[DllImport("taos", EntryPoint = "taos_close", CallingConvention = CallingConvention.Cdecl)]
static extern public int Close(IntPtr taos);
//get precision in restultset
[DllImport("taos", EntryPoint = "taos_result_precision", CallingConvention = CallingConvention.Cdecl)]
static extern public int ResultPrecision(IntPtr taos);
//schemaless API
[DllImport("taos",SetLastError = true, EntryPoint = "taos_schemaless_insert", CallingConvention = CallingConvention.Cdecl)]
static extern public IntPtr SchemalessInsert(IntPtr taos, string[] lines, int numLines, int protocol, int precision);
}
}
examples/C#/schemaless/schemaless.csproj 0 → 100644
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<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>net5.0</TargetFramework>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="TDengine.Connector" Version="1.0.2" />
</ItemGroup>
</Project>
examples/C#/schemaless/schemalessSample.cs 0 → 100644
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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/>.
*/
using System;
using System.Text;
using System.Collections.Generic;
using System.Runtime.InteropServices;
using System.Collections;
namespace TDengineDriver
{
class SchemalessSample
{
// connect parameters
private string host = "127.0.0.1";
private string configDir = "C:/TDengine/cfg";
private string user = "root";
private string passwd = "taosdata";
private short port = 0;
private IntPtr conn = IntPtr.Zero;
private string dbName = "csharp";
private string dbPrecision = "ms";
static void Main(string[] args)
{
string[] lines = {
"stg,t1=3i64,t2=4f64,t3=\"t3\" c1=3i64,c3=L\"passit\",c2=false,c4=4f64 1626006833639000000",
"stg,t1=4i64,t3=\"t4\",t2=5f64,t4=5f64 c1=3i64,c3=L\"passitagin\",c2=true,c4=5f64,c5=5f64 1626006833641000000"
};
string[] jsonStr = {
"{"
+"\"metric\": \"stb0_0\","
+"\"timestamp\": 1626006833,"
+"\"value\": 10,"
+"\"tags\": {"
+" \"t1\": true,"
+"\"t2\": false,"
+"\"t3\": 10,"
+"\"t4\": \"123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>\""
+"}"
+"}"
};
SchemalessSample sample = new SchemalessSample();
sample.InitTDengine();
sample.ConnectTDengine();
sample.dropDatabase();
sample.createDatabase();
sample.useDatabase();
sample.schemalessInsert(lines, 2, (int)TDengineSchemalessProtocol.TSDB_SML_LINE_PROTOCOL, (int)TDengineSchemalessPrecision.TSDB_SML_TIMESTAMP_NANO_SECONDS);
sample.checkSelect("stg");
sample.schemalessInsert(jsonStr,1,(int)TDengineSchemalessProtocol.TSDB_SML_JSON_PROTOCOL,(int)TDengineSchemalessPrecision.TSDB_SML_TIMESTAMP_SECONDS);
sample.checkSelect("stb0_0");
sample.CloseConnection();
sample.cleanup();
}
public void InitTDengine()
{
TDengine.Options((int)TDengineInitOption.TDDB_OPTION_CONFIGDIR, this.configDir);
TDengine.Options((int)TDengineInitOption.TDDB_OPTION_SHELL_ACTIVITY_TIMER, "60");
Console.WriteLine("init...");
TDengine.Init();
Console.WriteLine("get connection starting...");
}
public void ConnectTDengine()
{
string db = "";
this.conn = TDengine.Connect(host, this.user, this.passwd, db, this.port);
if (this.conn == IntPtr.Zero)
{
Console.WriteLine("connection failed: " + this.host);
ExitProgram();
}
else
{
Console.WriteLine("[ OK ] Connection established.");
}
}
public void createDatabase()
{
StringBuilder sql = new StringBuilder();
sql.Append("create database if not exists ").Append(this.dbName).Append(" precision '").Append(this.dbPrecision).Append("'");
execute(sql.ToString());
}
public void useDatabase()
{
StringBuilder sql = new StringBuilder();
sql.Append("use ").Append(this.dbName);
execute(sql.ToString());
}
public void checkSelect(String tableName)
{
StringBuilder sql = new StringBuilder();
sql.Append("select * from ").Append(this.dbName).Append(".").Append(tableName);
ExecuteQuery(sql.ToString());
}
public void schemalessInsert(string[] sqlstr, int lineCnt, int protocol, int precision)
{
IntPtr res = TDengine.SchemalessInsert(this.conn, sqlstr, lineCnt, protocol, precision);
if (TDengine.ErrorNo(res) != 0)
{
Console.WriteLine("schemaless_insert failed:{0}", TDengine.Error(res));
Console.WriteLine("line string:{0}", sqlstr);
Console.WriteLine("");
ExitProgram();
}
else
{
Console.WriteLine("else");
Console.WriteLine("schemaless insert success:{0}", TDengine.ErrorNo(res));
}
DisplayRes(res);
}
public void dropDatabase()
{
StringBuilder sql = new StringBuilder();
sql.Append("drop database if exists ").Append(this.dbName);
execute(sql.ToString());
}
public void execute(string sql)
{
DateTime dt1 = DateTime.Now;
IntPtr res = TDengine.Query(this.conn, sql.ToString());
DateTime dt2 = DateTime.Now;
TimeSpan span = dt2 - dt1;
if ((res == IntPtr.Zero) || (TDengine.ErrorNo(res) != 0))
{
Console.Write(sql.ToString() + " failure, ");
if (res != IntPtr.Zero)
{
Console.Write("reason: " + TDengine.Error(res));
}
Console.WriteLine("");
ExitProgram();
}
else
{
Console.WriteLine(sql.ToString() + " success");
}
TDengine.FreeResult(res);
}
public void DisplayRes(IntPtr res)
{
long queryRows = 0;
int fieldCount = TDengine.FieldCount(res);
List<TDengineMeta> metas = TDengine.FetchFields(res);
for (int j = 0; j < metas.Count; j++)
{
TDengineMeta meta = (TDengineMeta)metas[j];
}
IntPtr rowdata;
StringBuilder builder = new StringBuilder();
while ((rowdata = TDengine.FetchRows(res)) != IntPtr.Zero)
{
queryRows++;
for (int fields = 0; fields < fieldCount; ++fields)
{
TDengineMeta meta = metas[fields];
int offset = IntPtr.Size * fields;
IntPtr data = Marshal.ReadIntPtr(rowdata, offset);
builder.Append("---");
if (data == IntPtr.Zero)
{
builder.Append("NULL");
continue;
}
switch ((TDengineDataType)meta.type)
{
case TDengineDataType.TSDB_DATA_TYPE_BOOL:
bool v1 = Marshal.ReadByte(data) == 0 ? false : true;
builder.Append(v1);
break;
case TDengineDataType.TSDB_DATA_TYPE_TINYINT:
byte v2 = Marshal.ReadByte(data);
builder.Append(v2);
break;
case TDengineDataType.TSDB_DATA_TYPE_SMALLINT:
short v3 = Marshal.ReadInt16(data);
builder.Append(v3);
break;
case TDengineDataType.TSDB_DATA_TYPE_INT:
int v4 = Marshal.ReadInt32(data);
builder.Append(v4);
break;
case TDengineDataType.TSDB_DATA_TYPE_BIGINT:
long v5 = Marshal.ReadInt64(data);
builder.Append(v5);
break;
case TDengineDataType.TSDB_DATA_TYPE_FLOAT:
float v6 = (float)Marshal.PtrToStructure(data, typeof(float));
builder.Append(v6);
break;
case TDengineDataType.TSDB_DATA_TYPE_DOUBLE:
double v7 = (double)Marshal.PtrToStructure(data, typeof(double));
builder.Append(v7);
break;
case TDengineDataType.TSDB_DATA_TYPE_BINARY:
string v8 = Marshal.PtrToStringAnsi(data);
builder.Append(v8);
break;
case TDengineDataType.TSDB_DATA_TYPE_TIMESTAMP:
long v9 = Marshal.ReadInt64(data);
builder.Append(v9);
break;
case TDengineDataType.TSDB_DATA_TYPE_NCHAR:
string v10 = Marshal.PtrToStringAnsi(data);
builder.Append(v10);
break;
}
}
builder.Append("---");
if (queryRows <= 10)
{
Console.WriteLine(builder.ToString());
}
builder.Clear();
}
if (TDengine.ErrorNo(res) != 0)
{
Console.Write("Query is not complete, Error {0:G}", TDengine.ErrorNo(res), TDengine.Error(res));
}
Console.WriteLine("");
TDengine.FreeResult(res);
}
public void ExecuteQuery(string sql)
{
DateTime dt1 = DateTime.Now;
IntPtr res = TDengine.Query(conn, sql);
DateTime dt2 = DateTime.Now;
TimeSpan span = dt2 - dt1;
if ((res == IntPtr.Zero) || (TDengine.ErrorNo(res) != 0))
{
Console.Write(sql.ToString() + " failure, ");
if (res != IntPtr.Zero)
{
Console.Write("reason: " + TDengine.Error(res));
}
Console.WriteLine("");
ExitProgram();
}
Console.WriteLine("[OK] time cost: " + span.ToString() + "ms, execute statement ====> " + sql.ToString());
DisplayRes(res);
}
public void CloseConnection()
{
if (this.conn != IntPtr.Zero)
{
TDengine.Close(this.conn);
Console.WriteLine("connection closed.");
}
}
static void ExitProgram()
{
System.Environment.Exit(0);
}
public void cleanup()
{
Console.WriteLine("clean up...");
System.Environment.Exit(0);
}
// method to get db precision
}
}
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examples/C#/stmt/stmt.csproj 0 → 100644
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<Project Sdk="Microsoft.NET.Sdk">
<ItemGroup>
<PackageReference Include="TDengine.Connector" Version="1.0.3" />
</ItemGroup>
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>net5.0</TargetFramework>
</PropertyGroup>
</Project>
examples/C#/taosdemo/Dockerfile 0 → 100644
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FROM tdengine/tdengine-beta:latest
ENV DEBIAN_FRONTEND=noninteractive
ARG MIRROR=archive.ubuntu.com
RUN sed -Ei 's/\w+.ubuntu.com/'${MIRROR}'/' /etc/apt/sources.list && apt update && apt install mono-devel -y
RUN apt-get install wget -y \
&& wget https://packages.microsoft.com/config/ubuntu/18.04/packages-microsoft-prod.deb -O packages-microsoft-prod.deb \
&& dpkg -i packages-microsoft-prod.deb \
&& rm packages-microsoft-prod.deb \
&& apt-get update && apt-get install -y dotnet-sdk-5.0
COPY ./*.cs *.csproj /tmp/
WORKDIR /tmp/
RUN dotnet build -c Release && cp bin/Release/net5.0/taosdemo bin/Release/net5.0/taosdemo.* /usr/local/bin/ && rm -rf /tmp/*
FROM tdengine/tdengine-beta:latest
ENV DEBIAN_FRONTEND=noninteractive
RUN apt-get update && apt-get install wget -y \
&& wget https://packages.microsoft.com/config/ubuntu/18.04/packages-microsoft-prod.deb -O packages-microsoft-prod.deb \
&& dpkg -i packages-microsoft-prod.deb \
&& rm packages-microsoft-prod.deb \
&& apt-get update && apt-get install -y dotnet-runtime-5.0
COPY --from=0 /usr/local/bin/taosdemo* /usr/local/bin/
CMD ["/usr/local/bin/taosdemo"]
examples/C#/taosdemo/README.md 0 → 100644
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# C# Taosdemo
## For Mono
install build environment
```sh
yum/apt install mono-complete
```
build C# version taosdemo.
```sh
mcs -out:taosdemo *.cs
./taosdemo --help
```
## For DotNet
install dotnet environment.
```sh
wget https://packages.microsoft.com/config/ubuntu/18.04/packages-microsoft-prod.deb -O packages-microsoft-prod.deb \
&& dpkg -i packages-microsoft-prod.deb \
&& rm packages-microsoft-prod.deb \
&& apt-get update && apt-get install -y dotnet-sdk-5.0
```
Build DotNet version taosdemo.
```sh
dotnet build -c Release
./bin/Release/net5.0/taosdemo --help
```
## Usage
```
Usage: mono taosdemo.exe [OPTION...]
--help Show usage.
-h <hostname> host, The host to connect to TDengine. Default is localhost.
-p <port> port, The TCP/IP port number to use for the connection. Default is 0.
-u <username> user, The user name to use when connecting to the server. Default is 'root'.
-P <password> password, The password to use when connecting to the server. Default is 'taosdata'.
-d <dbname> database, Destination database. Default is 'test'.
-a <replications> replica, Set the replica parameters of the database, Default 1, min: 1, max: 5.
-m <table prefix> table_prefix, Table prefix name. Default is 't'.
-M stable, Use super table.
-s <stable prefix> stable_prefix, STable prefix name. Default is 'st'
-Q <DEFAULT | command> query, Execute query command. set 'DEFAULT' means select * from each table
-T <number> num_of_threads, The number of threads. Default is 10.
-r <number> num_of_records_per_req, The number of records per request. Default is 1000.
-t <number> num_of_tables, The number of tables. Default is 1.
-n <number> num_of_records_per_table, The number of records per table. Default is 1.
-c <path> config_directory, Configuration directory. Default is '/etc/taos/'.
-x flag, Insert only flag.
-O order, Insert mode--0: In order, 1: Out of order. Default is in order.
-R <number> rate, Out of order data's rate--if order=1 Default 10, min: 0, max: 50.
-D <number> Delete data methods 0: don't delete, 1: delete by table, 2: delete by stable, 3: delete by database.
-v Print verbose output
-g Print debug output
-y Skip read key for continous test, default is not skip
```
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examples/C#/taosdemo/taosdemo.csproj 0 → 100644
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<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>net5.0</TargetFramework>
<GenerateAssemblyInfo>false</GenerateAssemblyInfo>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="TDengine.Connector" Version="1.0.2" />
</ItemGroup>
</Project>
examples/JDBC/JDBCDemo/README-jdbc-windows.md 0 → 100644
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# 如何在 windows环境下使用jdbc进行TDengine应用开发
本文以windows环境为例，介绍java如何进行TDengine开发应用
## 环境准备
（1）安装jdk
官网下载jdk-1.8，下载页面：https://www.oracle.com/java/technologies/javase/javase-jdk8-downloads.html
安装，配置环境变量，把jdk加入到环境变量里。
命令行内查看java的版本。
```shell
>java -version
java version "1.8.0_131"
Java(TM) SE Runtime Environment (build 1.8.0_131-b11)
Java HotSpot(TM) 64-Bit Server VM (build 25.131-b11, mixed mode)
```
（2）安装配置maven
官网下载maven，下载地址：http://maven.apache.org/download.cgi
配置环境变量MAVEN_HOME，将MAVEN_HOME/bin添加到PATH
命令行里查看maven的版本
```shell
>mvn --version
Apache Maven 3.5.0 (ff8f5e7444045639af65f6095c62210b5713f426; 2017-04-04T03:39:06+08:00)
Maven home: D:\apache-maven-3.5.0\bin\..
Java version: 1.8.0_131, vendor: Oracle Corporation
Java home: C:\Program Files\Java\jdk1.8.0_131\jre
Default locale: zh_CN, platform encoding: GBK
OS name: "windows 10", version: "10.0", arch: "amd64", family: "windows"
```
为了加快maven下载依赖的速度，可以为maven配置mirror，修改MAVEN_HOME\config\settings.xml文件
```xml
<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0 http://maven.apache.org/xsd/settings-1.0.0.xsd">
<!-- 配置本地maven仓库的路径 -->
<localRepository>D:\apache-maven-localRepository</localRepository>
<mirrors>
<!-- 配置阿里云Maven镜像仓库 -->
<mirror>
<id>alimaven</id>
<name>aliyun maven</name>
<url>http://maven.aliyun.com/nexus/content/groups/public/</url>
<mirrorOf>central</mirrorOf>
</mirror>
</mirrors>
<profiles>
<!-- 配置jdk，maven会默认使用java1.8 -->
<profile>
<id>jdk-1.8</id>
<activation>
<activeByDefault>true</activeByDefault>
<jdk>1.8</jdk>
</activation>
<properties>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<maven.compiler.compilerVersion>1.8</maven.compiler.compilerVersion>
</properties>
</profile>
</profiles>
</settings>
```
（3）在linux服务器上安装TDengine-server
在taosdata官网下载TDengine-server，下载地址：https://www.taosdata.com/cn/all-downloads/
在linux服务器上安装TDengine-server
```shell
# tar -zxvf package/TDengine-server-2.0.1.1-Linux-x64.tar.gz
# cd TDengine-server/
# ./install.sh
```
启动taosd
```shell
# systemctl start taosd
```
在server上用taos连接taosd
```shell
# taos
taos> show dnodes;
id | end_point | vnodes | cores | status | role | create_time |
==================================================================================================================
1 | td01:6030 | 2 | 4 | ready | any | 2020-08-19 18:40:25.045 |
Query OK, 1 row(s) in set (0.005765s)
```
如果可以正确连接到taosd实例，并打印出databases的信息，说明TDengine的server已经正确启动。这里查看server的hostname
```shell
# hostname -f
td01
```
注意，如果安装TDengine后，使用默认的taos.cfg配置文件，taosd会使用当前server的hostname创建dnode实例。之后，在client也需要使用这个hostname来连接taosd。
（4）在windows上安装TDengine-client
在taosdata官网下载taos客户端，下载地址：
https://www.taosdata.com/cn/all-downloads/
下载后，双击exe安装。
修改client的hosts文件（C:\Windows\System32\drivers\etc\hosts），将server的hostname和ip配置到client的hosts文件中
```
192.168.236.136 td01
```
配置完成后，在命令行内使用taos shell连接server端
```shell
C:\TDengine>taos -h td01
Welcome to the TDengine shell from Linux, Client Version:2.0.1.1
Copyright (c) 2017 by TAOS Data, Inc. All rights reserved.
taos> show databases;
name | created_time | ntables | vgroups | replica | quorum | days | keep0,keep1,keep(D) | cache(MB) | blocks | minrows | maxrows | wallevel | fsync | comp | precision | status |
===================================================================================================================================================================================================================================================================
test | 2020-08-19 18:43:50.731 | 1 | 1 | 1 | 1 | 2 | 3650,3650,3650 | 16 | 6 | 100 | 4096 | 1 | 3000 | 2 | ms | ready |
log | 2020-08-19 18:40:28.064 | 4 | 1 | 1 | 1 | 10 | 30,30,30 | 1 | 3 | 100 | 4096 | 1 | 3000 | 2 | us | ready |
Query OK, 2 row(s) in set (0.068000s)
```
如果windows上的client能够正常连接，并打印database信息，说明client可以正常连接server了。
## 应用开发
（1）新建maven工程，在pom.xml中引入taos-jdbcdriver依赖。
```xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.taosdata.demo</groupId>
<artifactId>JdbcDemo</artifactId>
<version>1.0-SNAPSHOT</version>
<dependencies>
<dependency>
<groupId>com.taosdata.jdbc</groupId>
<artifactId>taos-jdbcdriver</artifactId>
<version>2.0.8</version>
</dependency>
</dependencies>
</project>
```
（2）使用jdbc查询TDengine数据库
下面是示例代码：
```java
public class JdbcDemo {
public static void main(String[] args) throws Exception {
Connection conn = getConn();
Statement stmt = conn.createStatement();
// create database
stmt.executeUpdate("create database if not exists db");
// use database
stmt.executeUpdate("use db");
// create table
stmt.executeUpdate("create table if not exists tb (ts timestamp, temperature int, humidity float)");
// insert data
int affectedRows = stmt.executeUpdate("insert into tb values(now, 23, 10.3) (now + 1s, 20, 9.3)");
System.out.println("insert " + affectedRows + " rows.");
// query data
ResultSet resultSet = stmt.executeQuery("select * from tb");
Timestamp ts = null;
int temperature = 0;
float humidity = 0;
while(resultSet.next()){
ts = resultSet.getTimestamp(1);
temperature = resultSet.getInt(2);
humidity = resultSet.getFloat("humidity");
System.out.printf("%s, %d, %s\n", ts, temperature, humidity);
}
}
public static Connection getConn() throws Exception{
Class.forName("com.taosdata.jdbc.TSDBDriver");
String jdbcUrl = "jdbc:TAOS://td01:0/log?user=root&password=taosdata";
Properties connProps = new Properties();
connProps.setProperty(TSDBDriver.PROPERTY_KEY_CHARSET, "UTF-8");
connProps.setProperty(TSDBDriver.PROPERTY_KEY_LOCALE, "en_US.UTF-8");
connProps.setProperty(TSDBDriver.PROPERTY_KEY_TIME_ZONE, "UTC-8");
Connection conn = DriverManager.getConnection(jdbcUrl, connProps);
return conn;
}
}
```
（3）测试jdbc访问tdengine的sever实例
console输出：
```
insert 2 rows.
2020-08-26 00:06:34.575, 23, 10.3
2020-08-26 00:06:35.575, 20, 9.3
```
## 指南
（1）如何设置主机名和hosts
在server上查看hostname和fqdn
```shell
查看hostname
# hostname
taos-server
查看fqdn
# hostname -f
taos-server
```
windows下hosts文件位于：
C:\\Windows\System32\drivers\etc\hosts
修改hosts文件，添加server的ip和hostname
```s
192.168.56.101 node5
```
（2）什么是fqdn？
> 什么是FQDN？
>
> FQDN（Full qualified domain name）全限定域名，fqdn由2部分组成：hostname+domainname。
>
> 例如，一个邮件服务器的fqdn可能是：mymail.somecollege.edu，其中mymail是hostname（主机名），somcollege.edu是domainname（域名）。本例中，.edu是顶级域名，.somecollege是二级域名。
>
> 当连接服务器时，必须指定fqdn，然后，dns服务器通过查看dns表，将hostname解析为相应的ip地址。如果只指定hostname（不指定domainname），应用程序可能服务解析主机名。因为如果你试图访问不在本地的远程服务器时，本地的dns服务器和可能没有远程服务器的hostname列表。
>
> 参考：https://kb.iu.edu/d/aiuv
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<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.taosdata.jdbc</groupId>
<artifactId>JDBCDemo</artifactId>
<version>SNAPSHOT</version>
<packaging>jar</packaging>
<properties>
<project.assembly.dir>src/main/resources/assembly</project.assembly.dir>
</properties>
<dependencies>
<dependency>
<groupId>com.taosdata.jdbc</groupId>
<artifactId>taos-jdbcdriver</artifactId>
<version>2.0.36</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-assembly-plugin</artifactId>
<version>3.3.0</version>
<executions>
<!-- jdbcDemo -->
<execution>
<id>JdbcDemo</id>
<configuration>
<finalName>JdbcDemo</finalName>
<archive>
<manifest>
<mainClass>com.taosdata.example.JdbcDemo</mainClass>
</manifest>
</archive>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
</configuration>
<phase>package</phase>
<goals>
<goal>single</goal>
</goals>
</execution>
<execution>
<id>JdbcRestfulDemo</id>
<configuration>
<finalName>JdbcRestfulDemo</finalName>
<archive>
<manifest>
<mainClass>com.taosdata.example.JdbcRestfulDemo</mainClass>
</manifest>
</archive>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
</configuration>
<phase>package</phase>
<goals>
<goal>single</goal>
</goals>
</execution>
<execution>
<id>SubscribeDemo</id>
<configuration>
<finalName>SubscribeDemo</finalName>
<archive>
<manifest>
<mainClass>com.taosdata.example.SubscribeDemo</mainClass>
</manifest>
</archive>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
</configuration>
<phase>package</phase>
<goals>
<goal>single</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>8</source>
<target>8</target>
<encoding>UTF-8</encoding>
</configuration>
</plugin>
</plugins>
</build>
</project>
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# How to Run the JDBC Demo Code On Linux OS
TDengine's JDBC demo project is organized in a Maven way so that users can easily compile, package and run the project. If you don't have Maven on your server, you may install it using
```
sudo apt-get install maven
```
## Install TDengine Client
Make sure you have already installed a tdengine client on your current develop environment.
Download the tdengine package on our website: ``https://www.taosdata.com/cn/all-downloads/`` and install the client.
## Run jdbcDemo using mvn plugin
run command:
```
mvn clean compile exec:java -Dexec.mainClass="com.taosdata.example.JdbcDemo"
```
and run with your customed args
```
mvn clean compile exec:java -Dexec.mainClass="com.taosdata.example.JdbcDemo" -Dexec.args="-host [HOSTNAME]"
```
## Compile the Demo Code and Run It
To compile taos-jdbcdriver, go to the source directory ``TDengine/src/connector/jdbc`` and execute
```
mvn clean package -Dmaven.test.skip=true
```
To compile the demo project, go to the source directory ``TDengine/tests/examples/JDBC/JDBCDemo`` and execute
```
mvn clean package assembly:single
```
To run JDBCDemo.jar, go to ``TDengine/tests/examples/JDBC/JDBCDemo`` and execute
```
java -Djava.ext.dirs=../../../../src/connector/jdbc/target:$JAVA_HOME/jre/lib/ext -jar target/JDBCDemo-SNAPSHOT-jar-with-dependencies.jar -host [HOSTNAME]
```
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package com.taosdata.example;
import java.sql.*;
import java.util.*;
public class BatchInsert {
private static final String host = "127.0.0.1";
private static final String user = "root";
private static final String password = "taosdata";
private static final String dbname = "test";
private static final String stbname = "stb";
private static final int tables= 100;
private static final int rows = 500;
private static final long ts = 1604877767000l;
private Connection conn;
private void init() {
// final String url = "jdbc:TAOS://" + host + ":6030/?user=" + user + "&password=" + password;
final String url = "jdbc:TAOS-RS://" + host + ":6041/?user=" + user + "&password=" + password;
// get connection
try {
Properties properties = new Properties();
properties.setProperty("charset", "UTF-8");
properties.setProperty("locale", "en_US.UTF-8");
properties.setProperty("timezone", "UTC-8");
System.out.println("get connection starting...");
conn = DriverManager.getConnection(url, properties);
if (conn != null){
System.out.println("[ OK ] Connection established.");
}
Statement stmt = conn.createStatement();
stmt.execute("drop database if exists " + dbname);
stmt.execute("create database if not exists " + dbname);
stmt.execute("use " + dbname);
stmt.execute("create table " + dbname + "." + stbname + "(ts timestamp, col int) tags(id int)");
} catch (SQLException e) {
e.printStackTrace();
}
}
private String generateSql() {
StringBuilder sb = new StringBuilder();
Random rand = new Random();
sb.append("insert into ");
for (int i = 0; i < tables; i++) {
sb.append(dbname + ".tb" + i + " using " + dbname + "." + stbname + " tags(" + i + ") values");
for (int j = 0; j < rows; j++) {
sb.append("(");
sb.append(ts + j);
sb.append(",");
sb.append(rand.nextInt(1000));
sb.append(") ");
}
}
return sb.toString();
}
private void executeQuery(String sql) {
try (Statement stmt = conn.createStatement()) {
long start = System.currentTimeMillis();
stmt.execute(sql);
long end = System.currentTimeMillis();
System.out.println("insert " + tables * rows + " records, cost " + (end - start)+ "ms");
} catch (SQLException ex) {
ex.printStackTrace();
}
}
public static void main(String[] args) {
BatchInsert bi = new BatchInsert();
String sql = bi.generateSql();
bi.init();
bi.executeQuery(sql);
}
}
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package com.taosdata.example;
import com.taosdata.jdbc.TSDBDriver;
import java.sql.*;
import java.util.Properties;
public class ClientParameterSetting {
private static final String host = "127.0.0.1";
public static void main(String[] args) throws SQLException {
setParameterInJdbcUrl();
setParameterInProperties();
}
private static void setParameterInJdbcUrl() throws SQLException {
String jdbcUrl = "jdbc:TAOS://" + host + ":6030/?debugFlag=135&asyncLog=0";
Connection connection = DriverManager.getConnection(jdbcUrl, "root", "taosdata");
printDatabase(connection);
connection.close();
}
private static void setParameterInProperties() throws SQLException {
String jdbcUrl = "jdbc:TAOS://" + host + ":6030/";
Properties properties = new Properties();
properties.setProperty("user", "root");
properties.setProperty("password", "taosdata");
properties.setProperty("debugFlag", "135");
properties.setProperty("asyncLog", "0");
properties.setProperty("maxSQLLength", "1048576");
try (Connection conn = DriverManager.getConnection(jdbcUrl, properties)) {
printDatabase(conn);
}
}
private static void printDatabase(Connection connection) throws SQLException {
try (Statement stmt = connection.createStatement()) {
ResultSet rs = stmt.executeQuery("show databases");
ResultSetMetaData meta = rs.getMetaData();
while (rs.next()) {
for (int i = 1; i <= meta.getColumnCount(); i++) {
System.out.print(meta.getColumnLabel(i) + ": " + rs.getString(i) + "\t");
}
System.out.println();
}
}
}
}
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public interface ExecuteAsStatement{
void doExecute(String sql);
}
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