85 lines
2.7 KiB
JavaScript
85 lines
2.7 KiB
JavaScript
'use strict'
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const msnodesql = require('msnodesqlv8')
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const debug = require('debug')('mssql:msv8')
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const BaseConnectionPool = require('../base/connection-pool')
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const { IDS, INCREMENT } = require('../utils')
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const shared = require('../shared')
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const ConnectionError = require('../error/connection-error')
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const { platform } = require('node:os')
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const { buildConnectionString } = require('@tediousjs/connection-string')
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const CONNECTION_DRIVER = ['darwin', 'linux'].includes(platform()) ? 'ODBC Driver 17 for SQL Server' : 'SQL Server Native Client 11.0'
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class ConnectionPool extends BaseConnectionPool {
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_poolCreate () {
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return new shared.Promise((resolve, reject) => {
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this.config.requestTimeout = this.config.requestTimeout ?? this.config.timeout ?? 15000
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const cfg = {
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conn_str: this.config.connectionString,
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conn_timeout: (this.config.connectionTimeout ?? this.config.timeout ?? 15000) / 1000
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}
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if (!this.config.connectionString) {
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cfg.conn_str = buildConnectionString({
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Driver: CONNECTION_DRIVER,
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Server: this.config.options.instanceName ? `${this.config.server}\\${this.config.options.instanceName}` : `${this.config.server},${this.config.port}`,
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Database: this.config.database,
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Uid: this.config.user,
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Pwd: this.config.password,
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Trusted_Connection: !!this.config.options.trustedConnection,
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Encrypt: !!this.config.options.encrypt
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})
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}
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const connedtionId = INCREMENT.Connection++
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debug('pool(%d): connection #%d created', IDS.get(this), connedtionId)
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debug('connection(%d): establishing', connedtionId)
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if (typeof this.config.beforeConnect === 'function') {
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this.config.beforeConnect(cfg)
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}
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msnodesql.open(cfg, (err, tds) => {
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if (err) {
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err = new ConnectionError(err)
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return reject(err)
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}
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IDS.add(tds, 'Connection', connedtionId)
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tds.setUseUTC(this.config.options.useUTC)
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debug('connection(%d): established', IDS.get(tds))
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resolve(tds)
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})
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})
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}
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_poolValidate (tds) {
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if (tds && !tds.hasError) {
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return !this.config.validateConnection || new shared.Promise((resolve) => {
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tds.query('SELECT 1;', (err) => {
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resolve(!err)
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})
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})
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}
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return false
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}
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_poolDestroy (tds) {
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return new shared.Promise((resolve, reject) => {
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if (!tds) {
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resolve()
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return
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}
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debug('connection(%d): destroying', IDS.get(tds))
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tds.close(() => {
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debug('connection(%d): destroyed', IDS.get(tds))
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resolve()
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})
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})
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}
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}
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module.exports = ConnectionPool
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