diff --git a/src/connector/nodejs/nodetaos/cinterface.js b/src/connector/nodejs/nodetaos/cinterface.js index 43a08a800afe7aa3e445a943f8d7a7f95f1ed05f..f3961e3787c4fb6d7da7092b68632d08a8b57e20 100644 --- a/src/connector/nodejs/nodetaos/cinterface.js +++ b/src/connector/nodejs/nodetaos/cinterface.js @@ -9,7 +9,7 @@ const ffi = require('ffi-napi'); const ArrayType = require('ref-array-napi'); const Struct = require('ref-struct-napi'); const FieldTypes = require('./constants'); -const errors = require ('./error'); +const errors = require('./error'); const TaosObjects = require('./taosobjects'); const { NULL_POINTER } = require('ref-napi'); @@ -22,7 +22,7 @@ function convertMicrosecondsToDatetime(time) { return new TaosObjects.TaosTimestamp(time * 0.001, true); } -function convertTimestamp(data, num_of_rows, nbytes = 0, offset = 0, micro=false) { +function convertTimestamp(data, num_of_rows, nbytes = 0, offset = 0, micro = false) { timestampConverter = convertMillisecondsToDatetime; if (micro == true) { timestampConverter = convertMicrosecondsToDatetime; @@ -44,14 +44,14 @@ function convertTimestamp(data, num_of_rows, nbytes = 0, offset = 0, micro=false } return res; } -function convertBool(data, num_of_rows, nbytes = 0, offset = 0, micro=false) { +function convertBool(data, num_of_rows, nbytes = 0, offset = 0, micro = false) { data = ref.reinterpret(data.deref(), nbytes * num_of_rows, offset); let res = new Array(data.length); for (let i = 0; i < data.length; i++) { if (data[i] == 0) { res[i] = false; } - else if (data[i] == 1){ + else if (data[i] == 1) { res[i] = true; } else if (data[i] == FieldTypes.C_BOOL_NULL) { @@ -60,29 +60,29 @@ function convertBool(data, num_of_rows, nbytes = 0, offset = 0, micro=false) { } return res; } -function convertTinyint(data, num_of_rows, nbytes = 0, offset = 0, micro=false) { +function convertTinyint(data, num_of_rows, nbytes = 0, offset = 0, micro = false) { data = ref.reinterpret(data.deref(), nbytes * num_of_rows, offset); let res = []; let currOffset = 0; while (currOffset < data.length) { - let d = data.readIntLE(currOffset,1); + let d = data.readIntLE(currOffset, 1); res.push(d == FieldTypes.C_TINYINT_NULL ? null : d); currOffset += nbytes; } return res; } -function convertSmallint(data, num_of_rows, nbytes = 0, offset = 0, micro=false) { +function convertSmallint(data, num_of_rows, nbytes = 0, offset = 0, micro = false) { data = ref.reinterpret(data.deref(), nbytes * num_of_rows, offset); let res = []; let currOffset = 0; while (currOffset < data.length) { - let d = data.readIntLE(currOffset,2); + let d = data.readIntLE(currOffset, 2); res.push(d == FieldTypes.C_SMALLINT_NULL ? null : d); currOffset += nbytes; } return res; } -function convertInt(data, num_of_rows, nbytes = 0, offset = 0, micro=false) { +function convertInt(data, num_of_rows, nbytes = 0, offset = 0, micro = false) { data = ref.reinterpret(data.deref(), nbytes * num_of_rows, offset); let res = []; let currOffset = 0; @@ -93,7 +93,7 @@ function convertInt(data, num_of_rows, nbytes = 0, offset = 0, micro=false) { } return res; } -function convertBigint(data, num_of_rows, nbytes = 0, offset = 0, micro=false) { +function convertBigint(data, num_of_rows, nbytes = 0, offset = 0, micro = false) { data = ref.reinterpret(data.deref(), nbytes * num_of_rows, offset); let res = []; let currOffset = 0; @@ -104,7 +104,7 @@ function convertBigint(data, num_of_rows, nbytes = 0, offset = 0, micro=false) { } return res; } -function convertFloat(data, num_of_rows, nbytes = 0, offset = 0, micro=false) { +function convertFloat(data, num_of_rows, nbytes = 0, offset = 0, micro = false) { data = ref.reinterpret(data.deref(), nbytes * num_of_rows, offset); let res = []; let currOffset = 0; @@ -115,7 +115,7 @@ function convertFloat(data, num_of_rows, nbytes = 0, offset = 0, micro=false) { } return res; } -function convertDouble(data, num_of_rows, nbytes = 0, offset = 0, micro=false) { +function convertDouble(data, num_of_rows, nbytes = 0, offset = 0, micro = false) { data = ref.reinterpret(data.deref(), nbytes * num_of_rows, offset); let res = []; let currOffset = 0; @@ -126,7 +126,7 @@ function convertDouble(data, num_of_rows, nbytes = 0, offset = 0, micro=false) { } return res; } -function convertBinary(data, num_of_rows, nbytes = 0, offset = 0, micro=false) { +function convertBinary(data, num_of_rows, nbytes = 0, offset = 0, micro = false) { data = ref.reinterpret(data.deref(), nbytes * num_of_rows, offset); let res = []; let currOffset = 0; @@ -142,7 +142,7 @@ function convertBinary(data, num_of_rows, nbytes = 0, offset = 0, micro=false) { } return res; } -function convertNchar(data, num_of_rows, nbytes = 0, offset = 0, micro=false) { +function convertNchar(data, num_of_rows, nbytes = 0, offset = 0, micro = false) { data = ref.reinterpret(data.deref(), nbytes * num_of_rows, offset); let res = []; let dataEntry = data.slice(0, nbytes); //one entry in a row under a column; @@ -153,23 +153,23 @@ function convertNchar(data, num_of_rows, nbytes = 0, offset = 0, micro=false) { // Object with all the relevant converters from pblock data to javascript readable data let convertFunctions = { - [FieldTypes.C_BOOL] : convertBool, - [FieldTypes.C_TINYINT] : convertTinyint, - [FieldTypes.C_SMALLINT] : convertSmallint, - [FieldTypes.C_INT] : convertInt, - [FieldTypes.C_BIGINT] : convertBigint, - [FieldTypes.C_FLOAT] : convertFloat, - [FieldTypes.C_DOUBLE] : convertDouble, - [FieldTypes.C_BINARY] : convertBinary, - [FieldTypes.C_TIMESTAMP] : convertTimestamp, - [FieldTypes.C_NCHAR] : convertNchar + [FieldTypes.C_BOOL]: convertBool, + [FieldTypes.C_TINYINT]: convertTinyint, + [FieldTypes.C_SMALLINT]: convertSmallint, + [FieldTypes.C_INT]: convertInt, + [FieldTypes.C_BIGINT]: convertBigint, + [FieldTypes.C_FLOAT]: convertFloat, + [FieldTypes.C_DOUBLE]: convertDouble, + [FieldTypes.C_BINARY]: convertBinary, + [FieldTypes.C_TIMESTAMP]: convertTimestamp, + [FieldTypes.C_NCHAR]: convertNchar } // Define TaosField structure var char_arr = ArrayType(ref.types.char); var TaosField = Struct({ - 'name': char_arr, - }); + 'name': char_arr, +}); TaosField.fields.name.type.size = 65; TaosField.defineProperty('type', ref.types.char); TaosField.defineProperty('bytes', ref.types.short); @@ -183,7 +183,7 @@ TaosField.defineProperty('bytes', ref.types.short); * @classdesc The CTaosInterface is the interface through which Node.JS communicates data back and forth with TDengine. It is not advised to * access this class directly and use it unless you understand what these functions do. */ -function CTaosInterface (config = null, pass = false) { +function CTaosInterface(config = null, pass = false) { ref.types.char_ptr = ref.refType(ref.types.char); ref.types.void_ptr = ref.refType(ref.types.void); ref.types.void_ptr2 = ref.refType(ref.types.void_ptr); @@ -196,64 +196,65 @@ function CTaosInterface (config = null, pass = false) { taoslibname = 'libtaos'; } this.libtaos = ffi.Library(taoslibname, { - 'taos_options': [ ref.types.int, [ ref.types.int , ref.types.void_ptr ] ], - 'taos_init': [ ref.types.void, [ ] ], + 'taos_options': [ref.types.int, [ref.types.int, ref.types.void_ptr]], + 'taos_init': [ref.types.void, []], //TAOS *taos_connect(char *ip, char *user, char *pass, char *db, int port) - 'taos_connect': [ ref.types.void_ptr, [ ref.types.char_ptr, ref.types.char_ptr, ref.types.char_ptr, ref.types.char_ptr, ref.types.int ] ], + 'taos_connect': [ref.types.void_ptr, [ref.types.char_ptr, ref.types.char_ptr, ref.types.char_ptr, ref.types.char_ptr, ref.types.int]], //void taos_close(TAOS *taos) - 'taos_close': [ ref.types.void, [ ref.types.void_ptr ] ], - //int *taos_fetch_lengths(TAOS_RES *taos); - 'taos_fetch_lengths': [ ref.types.void_ptr, [ ref.types.void_ptr ] ], + 'taos_close': [ref.types.void, [ref.types.void_ptr]], + //int *taos_fetch_lengths(TAOS_RES *res); + 'taos_fetch_lengths': [ref.types.void_ptr, [ref.types.void_ptr]], //int taos_query(TAOS *taos, char *sqlstr) - 'taos_query': [ ref.types.void_ptr, [ ref.types.void_ptr, ref.types.char_ptr ] ], - //int taos_affected_rows(TAOS *taos) - 'taos_affected_rows': [ ref.types.int, [ ref.types.void_ptr] ], + 'taos_query': [ref.types.void_ptr, [ref.types.void_ptr, ref.types.char_ptr]], + //int taos_affected_rows(TAOS_RES *res) + 'taos_affected_rows': [ref.types.int, [ref.types.void_ptr]], //int taos_fetch_block(TAOS_RES *res, TAOS_ROW *rows) - 'taos_fetch_block': [ ref.types.int, [ ref.types.void_ptr, ref.types.void_ptr] ], + 'taos_fetch_block': [ref.types.int, [ref.types.void_ptr, ref.types.void_ptr]], //int taos_num_fields(TAOS_RES *res); - 'taos_num_fields': [ ref.types.int, [ ref.types.void_ptr] ], + 'taos_num_fields': [ref.types.int, [ref.types.void_ptr]], //TAOS_ROW taos_fetch_row(TAOS_RES *res) //TAOS_ROW is void **, but we set the return type as a reference instead to get the row - 'taos_fetch_row': [ ref.refType(ref.types.void_ptr2), [ ref.types.void_ptr ] ], + 'taos_fetch_row': [ref.refType(ref.types.void_ptr2), [ref.types.void_ptr]], + 'taos_print_row': [ref.types.int, [ref.types.char_ptr, ref.types.void_ptr, ref.types.void_ptr, ref.types.int]], //int taos_result_precision(TAOS_RES *res) - 'taos_result_precision': [ ref.types.int, [ ref.types.void_ptr ] ], + 'taos_result_precision': [ref.types.int, [ref.types.void_ptr]], //void taos_free_result(TAOS_RES *res) - 'taos_free_result': [ ref.types.void, [ ref.types.void_ptr] ], + 'taos_free_result': [ref.types.void, [ref.types.void_ptr]], //int taos_field_count(TAOS *taos) - 'taos_field_count': [ ref.types.int, [ ref.types.void_ptr ] ], + 'taos_field_count': [ref.types.int, [ref.types.void_ptr]], //TAOS_FIELD *taos_fetch_fields(TAOS_RES *res) - 'taos_fetch_fields': [ ref.refType(TaosField), [ ref.types.void_ptr ] ], + 'taos_fetch_fields': [ref.refType(TaosField), [ref.types.void_ptr]], //int taos_errno(TAOS *taos) - 'taos_errno': [ ref.types.int, [ ref.types.void_ptr] ], + 'taos_errno': [ref.types.int, [ref.types.void_ptr]], //char *taos_errstr(TAOS *taos) - 'taos_errstr': [ ref.types.char_ptr, [ ref.types.void_ptr] ], + 'taos_errstr': [ref.types.char_ptr, [ref.types.void_ptr]], //void taos_stop_query(TAOS_RES *res); - 'taos_stop_query': [ ref.types.void, [ ref.types.void_ptr] ], + 'taos_stop_query': [ref.types.void, [ref.types.void_ptr]], //char *taos_get_server_info(TAOS *taos); - 'taos_get_server_info': [ ref.types.char_ptr, [ ref.types.void_ptr ] ], + 'taos_get_server_info': [ref.types.char_ptr, [ref.types.void_ptr]], //char *taos_get_client_info(); - 'taos_get_client_info': [ ref.types.char_ptr, [ ] ], + 'taos_get_client_info': [ref.types.char_ptr, []], // ASYNC // void taos_query_a(TAOS *taos, char *sqlstr, void (*fp)(void *, TAOS_RES *, int), void *param) - 'taos_query_a': [ ref.types.void, [ ref.types.void_ptr, ref.types.char_ptr, ref.types.void_ptr, ref.types.void_ptr ] ], + 'taos_query_a': [ref.types.void, [ref.types.void_ptr, ref.types.char_ptr, ref.types.void_ptr, ref.types.void_ptr]], // void taos_fetch_rows_a(TAOS_RES *res, void (*fp)(void *param, TAOS_RES *, int numOfRows), void *param); - 'taos_fetch_rows_a': [ ref.types.void, [ ref.types.void_ptr, ref.types.void_ptr, ref.types.void_ptr ]], + 'taos_fetch_rows_a': [ref.types.void, [ref.types.void_ptr, ref.types.void_ptr, ref.types.void_ptr]], // Subscription //TAOS_SUB *taos_subscribe(TAOS* taos, int restart, const char* topic, const char *sql, TAOS_SUBSCRIBE_CALLBACK fp, void *param, int interval) - 'taos_subscribe': [ ref.types.void_ptr, [ ref.types.void_ptr, ref.types.int, ref.types.char_ptr, ref.types.char_ptr, ref.types.void_ptr, ref.types.void_ptr, ref.types.int] ], + 'taos_subscribe': [ref.types.void_ptr, [ref.types.void_ptr, ref.types.int, ref.types.char_ptr, ref.types.char_ptr, ref.types.void_ptr, ref.types.void_ptr, ref.types.int]], // TAOS_RES *taos_consume(TAOS_SUB *tsub) - 'taos_consume': [ ref.types.void_ptr, [ref.types.void_ptr] ], + 'taos_consume': [ref.types.void_ptr, [ref.types.void_ptr]], //void taos_unsubscribe(TAOS_SUB *tsub); - 'taos_unsubscribe': [ ref.types.void, [ ref.types.void_ptr ] ], + 'taos_unsubscribe': [ref.types.void, [ref.types.void_ptr]], // Continuous Query //TAOS_STREAM *taos_open_stream(TAOS *taos, char *sqlstr, void (*fp)(void *param, TAOS_RES *, TAOS_ROW row), // int64_t stime, void *param, void (*callback)(void *)); - 'taos_open_stream': [ ref.types.void_ptr, [ ref.types.void_ptr, ref.types.char_ptr, ref.types.void_ptr, ref.types.int64, ref.types.void_ptr, ref.types.void_ptr ] ], + 'taos_open_stream': [ref.types.void_ptr, [ref.types.void_ptr, ref.types.char_ptr, ref.types.void_ptr, ref.types.int64, ref.types.void_ptr, ref.types.void_ptr]], //void taos_close_stream(TAOS_STREAM *tstr); - 'taos_close_stream': [ ref.types.void, [ ref.types.void_ptr ] ] + 'taos_close_stream': [ref.types.void, [ref.types.void_ptr]] }); if (pass == false) { @@ -264,7 +265,7 @@ function CTaosInterface (config = null, pass = false) { try { this._config = ref.allocCString(config); } - catch(err){ + catch (err) { throw "Attribute Error: config is expected as a str"; } } @@ -276,38 +277,38 @@ function CTaosInterface (config = null, pass = false) { return this; } CTaosInterface.prototype.config = function config() { - return this._config; - } -CTaosInterface.prototype.connect = function connect(host=null, user="root", password="taosdata", db=null, port=0) { - let _host,_user,_password,_db,_port; - try { + return this._config; +} +CTaosInterface.prototype.connect = function connect(host = null, user = "root", password = "taosdata", db = null, port = 0) { + let _host, _user, _password, _db, _port; + try { _host = host != null ? ref.allocCString(host) : ref.alloc(ref.types.char_ptr, ref.NULL); } - catch(err) { + catch (err) { throw "Attribute Error: host is expected as a str"; } try { _user = ref.allocCString(user) } - catch(err) { + catch (err) { throw "Attribute Error: user is expected as a str"; } try { _password = ref.allocCString(password); } - catch(err) { + catch (err) { throw "Attribute Error: password is expected as a str"; } try { _db = db != null ? ref.allocCString(db) : ref.alloc(ref.types.char_ptr, ref.NULL); } - catch(err) { + catch (err) { throw "Attribute Error: db is expected as a str"; } try { _port = ref.alloc(ref.types.int, port); } - catch(err) { + catch (err) { throw TypeError("port is expected as an int") } let connection = this.libtaos.taos_connect(_host, _user, _password, _db, _port); @@ -324,10 +325,10 @@ CTaosInterface.prototype.close = function close(connection) { console.log("Connection is closed"); } CTaosInterface.prototype.query = function query(connection, sql) { - return this.libtaos.taos_query(connection, ref.allocCString(sql)); + return this.libtaos.taos_query(connection, ref.allocCString(sql)); } -CTaosInterface.prototype.affectedRows = function affectedRows(connection) { - return this.libtaos.taos_affected_rows(connection); +CTaosInterface.prototype.affectedRows = function affectedRows(result) { + return this.libtaos.taos_affected_rows(result); } CTaosInterface.prototype.useResult = function useResult(result) { @@ -337,8 +338,8 @@ CTaosInterface.prototype.useResult = function useResult(result) { pfields = ref.reinterpret(pfields, this.fieldsCount(result) * 68, 0); for (let i = 0; i < pfields.length; i += 68) { //0 - 63 = name //64 - 65 = bytes, 66 - 67 = type - fields.push( { - name: ref.readCString(ref.reinterpret(pfields,65,i)), + fields.push({ + name: ref.readCString(ref.reinterpret(pfields, 65, i)), type: pfields[i + 65], bytes: pfields[i + 66] }) @@ -347,11 +348,10 @@ CTaosInterface.prototype.useResult = function useResult(result) { return fields; } CTaosInterface.prototype.fetchBlock = function fetchBlock(result, fields) { - //let pblock = ref.ref(ref.ref(ref.NULL)); // equal to our raw data - let pblock = this.libtaos.taos_fetch_row(result); - let num_of_rows = 1; - if (ref.isNull(pblock) == true) { - return {block:null, num_of_rows:0}; + let pblock = ref.NULL_POINTER; + let num_of_rows = this.libtaos.taos_fetch_block(result, pblock); + if (ref.isNull(pblock.deref()) == true) { + return { block: null, num_of_rows: 0 }; } var fieldL = this.libtaos.taos_fetch_lengths(result); @@ -359,10 +359,10 @@ CTaosInterface.prototype.fetchBlock = function fetchBlock(result, fields) { let isMicro = (this.libtaos.taos_result_precision(result) == FieldTypes.C_TIMESTAMP_MICRO); var fieldlens = []; - + if (ref.isNull(fieldL) == false) { - for (let i = 0; i < fields.length; i ++) { - let plen = ref.reinterpret(fieldL, 4, i*4); + for (let i = 0; i < fields.length; i++) { + let plen = ref.reinterpret(fieldL, 4, i * 4); let len = plen.readInt32LE(0); fieldlens.push(len); } @@ -370,21 +370,23 @@ CTaosInterface.prototype.fetchBlock = function fetchBlock(result, fields) { let blocks = new Array(fields.length); blocks.fill(null); - //num_of_rows = Math.abs(num_of_rows); + num_of_rows = Math.abs(num_of_rows); let offset = 0; + let ptr = pblock.deref(); + for (let i = 0; i < fields.length; i++) { - pdata = ref.reinterpret(pblock,8,i*8); - if(ref.isNull(pdata.readPointer())){ - blocks[i] = new Array(); - }else{ - pdata = ref.ref(pdata.readPointer()); - if (!convertFunctions[fields[i]['type']] ) { - throw new errors.DatabaseError("Invalid data type returned from database"); - } - blocks[i] = convertFunctions[fields[i]['type']](pdata, 1, fieldlens[i], offset, isMicro); - } - } - return {blocks: blocks, num_of_rows:Math.abs(num_of_rows)} + pdata = ref.reinterpret(ptr, 8, i * 8); + if (ref.isNull(pdata.readPointer())) { + blocks[i] = new Array(); + } else { + pdata = ref.ref(pdata.readPointer()); + if (!convertFunctions[fields[i]['type']]) { + throw new errors.DatabaseError("Invalid data type returned from database"); + } + blocks[i] = convertFunctions[fields[i]['type']](pdata, num_of_rows, fieldlens[i], offset, isMicro); + } + } + return { blocks: blocks, num_of_rows } } CTaosInterface.prototype.fetchRow = function fetchRow(result, fields) { let row = this.libtaos.taos_fetch_row(result); @@ -414,7 +416,7 @@ CTaosInterface.prototype.errStr = function errStr(result) { // Async CTaosInterface.prototype.query_a = function query_a(connection, sql, callback, param = ref.ref(ref.NULL)) { // void taos_query_a(TAOS *taos, char *sqlstr, void (*fp)(void *param, TAOS_RES *, int), void *param) - callback = ffi.Callback(ref.types.void, [ ref.types.void_ptr, ref.types.void_ptr, ref.types.int ], callback); + callback = ffi.Callback(ref.types.void, [ref.types.void_ptr, ref.types.void_ptr, ref.types.int], callback); this.libtaos.taos_query_a(connection, ref.allocCString(sql), callback, param); return param; } @@ -439,46 +441,46 @@ CTaosInterface.prototype.fetch_rows_a = function fetch_rows_a(result, callback, var fieldL = cti.libtaos.taos_fetch_lengths(result); var fieldlens = []; if (ref.isNull(fieldL) == false) { - - for (let i = 0; i < fields.length; i ++) { - let plen = ref.reinterpret(fieldL, 8, i*8); - let len = ref.get(plen,0,ref.types.int32); + + for (let i = 0; i < fields.length; i++) { + let plen = ref.reinterpret(fieldL, 8, i * 8); + let len = ref.get(plen, 0, ref.types.int32); fieldlens.push(len); } } - if (numOfRows2 > 0){ + if (numOfRows2 > 0) { for (let i = 0; i < fields.length; i++) { - if(ref.isNull(pdata.readPointer())){ - blocks[i] = new Array(); - }else{ - if (!convertFunctions[fields[i]['type']] ) { - throw new errors.DatabaseError("Invalid data type returned from database"); - } - let prow = ref.reinterpret(row,8,i*8); - prow = prow.readPointer(); - prow = ref.ref(prow); - blocks[i] = convertFunctions[fields[i]['type']](prow, 1, fieldlens[i], offset, isMicro); - //offset += fields[i]['bytes'] * numOfRows2; - } + if (ref.isNull(pdata.readPointer())) { + blocks[i] = new Array(); + } else { + if (!convertFunctions[fields[i]['type']]) { + throw new errors.DatabaseError("Invalid data type returned from database"); + } + let prow = ref.reinterpret(row, 8, i * 8); + prow = prow.readPointer(); + prow = ref.ref(prow); + blocks[i] = convertFunctions[fields[i]['type']](prow, 1, fieldlens[i], offset, isMicro); + //offset += fields[i]['bytes'] * numOfRows2; + } } } callback(param2, result2, numOfRows2, blocks); } - asyncCallbackWrapper = ffi.Callback(ref.types.void, [ ref.types.void_ptr, ref.types.void_ptr, ref.types.int ], asyncCallbackWrapper); + asyncCallbackWrapper = ffi.Callback(ref.types.void, [ref.types.void_ptr, ref.types.void_ptr, ref.types.int], asyncCallbackWrapper); this.libtaos.taos_fetch_rows_a(result, asyncCallbackWrapper, param); return param; } // Fetch field meta data by result handle -CTaosInterface.prototype.fetchFields_a = function fetchFields_a (result) { +CTaosInterface.prototype.fetchFields_a = function fetchFields_a(result) { let pfields = this.fetchFields(result); let pfieldscount = this.numFields(result); let fields = []; if (ref.isNull(pfields) == false) { - pfields = ref.reinterpret(pfields, 68 * pfieldscount , 0); + pfields = ref.reinterpret(pfields, 68 * pfieldscount, 0); for (let i = 0; i < pfields.length; i += 68) { //0 - 64 = name //65 = type, 66 - 67 = bytes - fields.push( { - name: ref.readCString(ref.reinterpret(pfields,65,i)), + fields.push({ + name: ref.readCString(ref.reinterpret(pfields, 65, i)), type: pfields[i + 65], bytes: pfields[i + 66] }) @@ -488,7 +490,7 @@ CTaosInterface.prototype.fetchFields_a = function fetchFields_a (result) { } // Stop a query by result handle CTaosInterface.prototype.stopQuery = function stopQuery(result) { - if (result != null){ + if (result != null) { this.libtaos.taos_stop_query(result); } else { @@ -509,13 +511,13 @@ CTaosInterface.prototype.subscribe = function subscribe(connection, restart, top try { sql = sql != null ? ref.allocCString(sql) : ref.alloc(ref.types.char_ptr, ref.NULL); } - catch(err) { + catch (err) { throw "Attribute Error: sql is expected as a str"; } try { topic = topic != null ? ref.allocCString(topic) : ref.alloc(ref.types.char_ptr, ref.NULL); } - catch(err) { + catch (err) { throw TypeError("topic is expected as a str"); } @@ -539,8 +541,8 @@ CTaosInterface.prototype.consume = function consume(subscription) { pfields = ref.reinterpret(pfields, this.numFields(result) * 68, 0); for (let i = 0; i < pfields.length; i += 68) { //0 - 63 = name //64 - 65 = bytes, 66 - 67 = type - fields.push( { - name: ref.readCString(ref.reinterpret(pfields,64,i)), + fields.push({ + name: ref.readCString(ref.reinterpret(pfields, 64, i)), bytes: pfields[i + 64], type: pfields[i + 66] }) @@ -548,7 +550,7 @@ CTaosInterface.prototype.consume = function consume(subscription) { } let data = []; - while(true) { + while (true) { let { blocks, num_of_rows } = this.fetchBlock(result, fields); if (num_of_rows == 0) { break; @@ -559,7 +561,7 @@ CTaosInterface.prototype.consume = function consume(subscription) { for (let j = 0; j < fields.length; j++) { rowBlock[j] = blocks[j][i]; } - data[data.length-1] = (rowBlock); + data[data.length - 1] = (rowBlock); } } return { data: data, fields: fields, result: result }; @@ -570,11 +572,11 @@ CTaosInterface.prototype.unsubscribe = function unsubscribe(subscription) { } // Continuous Query -CTaosInterface.prototype.openStream = function openStream(connection, sql, callback, stime,stoppingCallback, param = ref.ref(ref.NULL)) { +CTaosInterface.prototype.openStream = function openStream(connection, sql, callback, stime, stoppingCallback, param = ref.ref(ref.NULL)) { try { sql = ref.allocCString(sql); } - catch(err) { + catch (err) { throw "Attribute Error: sql string is expected as a str"; } var cti = this; @@ -587,7 +589,7 @@ CTaosInterface.prototype.openStream = function openStream(connection, sql, callb let offset = 0; if (numOfRows2 > 0) { for (let i = 0; i < fields.length; i++) { - if (!convertFunctions[fields[i]['type']] ) { + if (!convertFunctions[fields[i]['type']]) { throw new errors.DatabaseError("Invalid data type returned from database"); } blocks[i] = convertFunctions[fields[i]['type']](row, numOfRows2, fields[i]['bytes'], offset, isMicro); @@ -596,8 +598,8 @@ CTaosInterface.prototype.openStream = function openStream(connection, sql, callb } callback(param2, result2, blocks, fields); } - asyncCallbackWrapper = ffi.Callback(ref.types.void, [ ref.types.void_ptr, ref.types.void_ptr, ref.refType(ref.types.void_ptr2) ], asyncCallbackWrapper); - asyncStoppingCallbackWrapper = ffi.Callback( ref.types.void, [ ref.types.void_ptr ], stoppingCallback); + asyncCallbackWrapper = ffi.Callback(ref.types.void, [ref.types.void_ptr, ref.types.void_ptr, ref.refType(ref.types.void_ptr2)], asyncCallbackWrapper); + asyncStoppingCallbackWrapper = ffi.Callback(ref.types.void, [ref.types.void_ptr], stoppingCallback); let streamHandle = this.libtaos.taos_open_stream(connection, sql, asyncCallbackWrapper, stime, param, asyncStoppingCallbackWrapper); if (ref.isNull(streamHandle)) { throw new errors.TDError('Failed to open a stream with TDengine'); diff --git a/src/connector/nodejs/nodetaos/cursor.js b/src/connector/nodejs/nodetaos/cursor.js index e18e6c2500019684dea85fe05bc7306e0a372478..f879d89d487eae9290fd9fc70259699f27937928 100644 --- a/src/connector/nodejs/nodetaos/cursor.js +++ b/src/connector/nodejs/nodetaos/cursor.js @@ -1,7 +1,7 @@ const ref = require('ref-napi'); require('./globalfunc.js') const CTaosInterface = require('./cinterface') -const errors = require ('./error') +const errors = require('./error') const TaosQuery = require('./taosquery') const { PerformanceObserver, performance } = require('perf_hooks'); module.exports = TDengineCursor; @@ -22,7 +22,7 @@ module.exports = TDengineCursor; * @property {fields} - Array of the field objects in order from left to right of the latest data retrieved * @since 1.0.0 */ -function TDengineCursor(connection=null) { +function TDengineCursor(connection = null) { //All parameters are store for sync queries only. this._rowcount = -1; this._connection = null; @@ -91,7 +91,7 @@ TDengineCursor.prototype.execute = function execute(operation, options, callback return null; } - if (typeof options == 'function') { + if (typeof options == 'function') { callback = options; } if (typeof options != 'object') options = {} @@ -144,10 +144,10 @@ TDengineCursor.prototype.execute = function execute(operation, options, callback } TDengineCursor.prototype._createAffectedResponse = function (num, time) { - return "Query OK, " + num + " row(s) affected (" + (time * 0.001).toFixed(8) + "s)"; + return "Query OK, " + num + " row(s) affected (" + (time * 0.001).toFixed(8) + "s)"; } TDengineCursor.prototype._createSetResponse = function (num, time) { - return "Query OK, " + num + " row(s) in set (" + (time * 0.001).toFixed(8) + "s)"; + return "Query OK, " + num + " row(s) in set (" + (time * 0.001).toFixed(8) + "s)"; } TDengineCursor.prototype.executemany = function executemany() { @@ -176,27 +176,22 @@ TDengineCursor.prototype.fetchall = function fetchall(options, callback) { throw new errors.OperationalError("Invalid use of fetchall, either result or fields from query are null. First execute a query first"); } - let data = []; + let num_of_rows = this._chandle.affectedRows(this._result); + let data = new Array(num_of_rows); + this._rowcount = 0; - //let nodetime = 0; + let time = 0; const obs = new PerformanceObserver((items) => { time += items.getEntries()[0].duration; performance.clearMarks(); }); - /* - const obs2 = new PerformanceObserver((items) => { - nodetime += items.getEntries()[0].duration; - performance.clearMarks(); - }); - obs2.observe({ entryTypes: ['measure'] }); - performance.mark('nodea'); - */ obs.observe({ entryTypes: ['measure'] }); performance.mark('A'); - while(true) { - + while (true) { let blockAndRows = this._chandle.fetchBlock(this._result, this._fields); + // console.log(blockAndRows); + // break; let block = blockAndRows.blocks; let num_of_rows = blockAndRows.num_of_rows; if (num_of_rows == 0) { @@ -205,22 +200,24 @@ TDengineCursor.prototype.fetchall = function fetchall(options, callback) { this._rowcount += num_of_rows; let numoffields = this._fields.length; for (let i = 0; i < num_of_rows; i++) { - data.push([]); - + // data.push([]); + let rowBlock = new Array(numoffields); for (let j = 0; j < numoffields; j++) { rowBlock[j] = block[j][i]; } - data[data.length-1] = (rowBlock); + data[this._rowcount - num_of_rows + i] = (rowBlock); + // data.push(rowBlock); } } + performance.mark('B'); performance.measure('query', 'A', 'B'); let response = this._createSetResponse(this._rowcount, time) console.log(response); - // this._connection._clearResultSet(); + // this._connection._clearResultSet(); let fields = this.fields; this._reset_result(); this.data = data; @@ -239,12 +236,12 @@ TDengineCursor.prototype.fetchall = function fetchall(options, callback) { * @return {number | Buffer} Number of affected rows or a Buffer that points to the results of the query * @since 1.0.0 */ -TDengineCursor.prototype.execute_a = function execute_a (operation, options, callback, param) { +TDengineCursor.prototype.execute_a = function execute_a(operation, options, callback, param) { if (operation == undefined) { throw new errors.ProgrammingError('No operation passed as argument'); return null; } - if (typeof options == 'function') { + if (typeof options == 'function') { //we expect the parameter after callback to be param param = callback; callback = options; @@ -265,14 +262,14 @@ TDengineCursor.prototype.execute_a = function execute_a (operation, options, cal } if (resCode >= 0) { -// let fieldCount = cr._chandle.numFields(res2); -// if (fieldCount == 0) { -// //cr._chandle.freeResult(res2); -// return res2; -// } -// else { -// return res2; -// } + // let fieldCount = cr._chandle.numFields(res2); + // if (fieldCount == 0) { + // //cr._chandle.freeResult(res2); + // return res2; + // } + // else { + // return res2; + // } return res2; } @@ -317,7 +314,7 @@ TDengineCursor.prototype.execute_a = function execute_a (operation, options, cal * }) */ TDengineCursor.prototype.fetchall_a = function fetchall_a(result, options, callback, param = {}) { - if (typeof options == 'function') { + if (typeof options == 'function') { //we expect the parameter after callback to be param param = callback; callback = options; @@ -360,17 +357,17 @@ TDengineCursor.prototype.fetchall_a = function fetchall_a(result, options, callb for (let k = 0; k < fields.length; k++) { rowBlock[k] = block[k][j]; } - data[data.length-1] = rowBlock; + data[data.length - 1] = rowBlock; } } cr._chandle.freeResult(result2); // free result, avoid seg faults and mem leaks! - callback(param2, result2, numOfRows2, {data:data,fields:fields}); + callback(param2, result2, numOfRows2, { data: data, fields: fields }); } } ref.writeObject(buf, 0, param); param = this._chandle.fetch_rows_a(result, asyncCallbackWrapper, buf); //returned param - return {param:param,result:result}; + return { param: param, result: result }; } /** * Stop a query given the result handle. @@ -428,7 +425,7 @@ TDengineCursor.prototype.subscribe = function subscribe(config) { */ TDengineCursor.prototype.consumeData = async function consumeData(subscription, callback) { while (true) { - let { data, fields, result} = this._chandle.consume(subscription); + let { data, fields, result } = this._chandle.consume(subscription); callback(data, fields, result); } } @@ -450,30 +447,30 @@ TDengineCursor.prototype.unsubscribe = function unsubscribe(subscription) { * @return {Buffer} A buffer pointing to the stream handle * @since 1.3.0 */ - TDengineCursor.prototype.openStream = function openStream(sql, callback, stime = 0, stoppingCallback, param = {}) { - let buf = ref.alloc('Object'); - ref.writeObject(buf, 0, param); +TDengineCursor.prototype.openStream = function openStream(sql, callback, stime = 0, stoppingCallback, param = {}) { + let buf = ref.alloc('Object'); + ref.writeObject(buf, 0, param); - let asyncCallbackWrapper = function (param2, result2, blocks, fields) { - let data = []; - let num_of_rows = blocks[0].length; - for (let j = 0; j < num_of_rows; j++) { - data.push([]); - let rowBlock = new Array(fields.length); - for (let k = 0; k < fields.length; k++) { - rowBlock[k] = blocks[k][j]; - } - data[data.length-1] = rowBlock; - } - callback(param2, result2, blocks, fields); - } - return this._chandle.openStream(this._connection._conn, sql, asyncCallbackWrapper, stime, stoppingCallback, buf); - } - /** - * Close a stream - * @param {Buffer} - A buffer pointing to the handle of the stream to be closed - * @since 1.3.0 - */ - TDengineCursor.prototype.closeStream = function closeStream(stream) { - this._chandle.closeStream(stream); - } + let asyncCallbackWrapper = function (param2, result2, blocks, fields) { + let data = []; + let num_of_rows = blocks[0].length; + for (let j = 0; j < num_of_rows; j++) { + data.push([]); + let rowBlock = new Array(fields.length); + for (let k = 0; k < fields.length; k++) { + rowBlock[k] = blocks[k][j]; + } + data[data.length - 1] = rowBlock; + } + callback(param2, result2, blocks, fields); + } + return this._chandle.openStream(this._connection._conn, sql, asyncCallbackWrapper, stime, stoppingCallback, buf); +} +/** + * Close a stream + * @param {Buffer} - A buffer pointing to the handle of the stream to be closed + * @since 1.3.0 + */ +TDengineCursor.prototype.closeStream = function closeStream(stream) { + this._chandle.closeStream(stream); +} diff --git a/src/connector/nodejs/package-lock.json b/src/connector/nodejs/package-lock.json deleted file mode 100644 index 9ca174ccd12f782b047789e44a6abce231b15ad0..0000000000000000000000000000000000000000 --- a/src/connector/nodejs/package-lock.json +++ /dev/null @@ -1,285 +0,0 @@ -{ - 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} - } -} diff --git a/src/connector/nodejs/package.json b/src/connector/nodejs/package.json index b39ce2c17d8e693d0e981885aed55ba1b82313b6..d21b62108b14e5a132ad5457d190bbcbc58b73a8 100644 --- a/src/connector/nodejs/package.json +++ b/src/connector/nodejs/package.json @@ -1,6 +1,6 @@ { "name": "td2.0-connector", - "version": "2.0.6", + "version": "2.0.7", "description": "A Node.js connector for TDengine.", "main": "tdengine.js", "directories": {