@tdengine/websocket
Version:
The websocket Node.js connector for TDengine. TDengine versions 3.3.2.0 and above are recommended to use this connector.
90 lines (89 loc) • 3.95 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
const config_1 = require("../src/common/config");
const src_1 = require("../src");
let dsn = 'ws://127.0.0.1:6041';
async function json_tag_example() {
let wsSql = null;
try {
let conf = new config_1.WSConfig(dsn);
conf.setUser('root');
conf.setPwd('taosdata');
wsSql = await (0, src_1.sqlConnect)(conf);
console.log("Connected to " + dsn + " successfully.");
// create database
await wsSql.exec('CREATE DATABASE IF NOT EXISTS example_json_tag');
console.log("Create database example_json_tag successfully.");
// create table
await wsSql.exec('create table if not exists example_json_tag.stb (ts timestamp, v int) tags(jt json)');
console.log("Create stable example_json_tag.stb successfully");
let insertQuery = 'INSERT INTO ' +
'example_json_tag.tb1 USING example_json_tag.stb TAGS(\'{"name":"value"}\') ' +
"values(now, 1) ";
let taosResult = await wsSql.exec(insertQuery);
console.log("Successfully inserted " + taosResult.getAffectRows() + " rows to example_json_tag.stb.");
let sql = 'SELECT ts, v, jt FROM example_json_tag.stb limit 100';
let wsRows = await wsSql.query(sql);
while (await wsRows.next()) {
let row = wsRows.getData();
if (row) {
console.log('ts: ' + row[0] + ', v: ' + row[1] + ', jt: ' + row[2]);
}
}
}
catch (err) {
console.error(`Failed to create database example_json_tag or stable stb, ErrCode: ${err.code}, ErrMessage: ${err.message}`);
}
finally {
if (wsSql) {
await wsSql.close();
}
}
}
async function all_type_example() {
let wsSql = null;
try {
let conf = new config_1.WSConfig(dsn);
conf.setUser('root');
conf.setPwd('taosdata');
wsSql = await (0, src_1.sqlConnect)(conf);
console.log("Connected to " + dsn + " successfully.");
// create database
await wsSql.exec('CREATE DATABASE IF NOT EXISTS all_type_example');
console.log("Create database all_type_example successfully.");
// create table
await wsSql.exec('create table if not exists all_type_example.stb (ts timestamp, ' +
'int_col INT, double_col DOUBLE, bool_col BOOL, binary_col BINARY(100),' +
'nchar_col NCHAR(100), varbinary_col VARBINARY(100), geometry_col GEOMETRY(100)) ' +
'tags(int_tag INT, double_tag DOUBLE, bool_tag BOOL, binary_tag BINARY(100),' +
'nchar_tag NCHAR(100), varbinary_tag VARBINARY(100), geometry_tag GEOMETRY(100));');
console.log("Create stable all_type_example.stb successfully");
let insertQuery = "INSERT INTO all_type_example.tb1 using all_type_example.stb "
+ "tags(1, 1.1, true, 'binary_value', 'nchar_value', '\\x98f46e', 'POINT(100 100)') "
+ "values(now, 1, 1.1, true, 'binary_value', 'nchar_value', '\\x98f46e', 'POINT(100 100)')";
let taosResult = await wsSql.exec(insertQuery);
console.log("Successfully inserted " + taosResult.getAffectRows() + " rows to all_type_example.stb.");
let sql = 'SELECT * FROM all_type_example.stb limit 100';
let wsRows = await wsSql.query(sql);
let meta = wsRows.getMeta();
console.log("wsRow:meta:=>", meta);
while (await wsRows.next()) {
let row = wsRows.getData();
console.log(row);
}
}
catch (err) {
console.error(`Failed to create database all_type_example or stable stb, ErrCode: ${err.code}, ErrMessage: ${err.message}`);
}
finally {
if (wsSql) {
await wsSql.close();
}
}
}
async function test() {
await json_tag_example();
await all_type_example();
(0, src_1.destroy)();
}
test();