8 lines
7.1 KiB
Plaintext
8 lines
7.1 KiB
Plaintext
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{
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"version": 3,
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"sources": ["../../../src/dialects/mysql/connection-manager.js"],
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"sourcesContent": ["'use strict';\n\nconst AbstractConnectionManager = require('../abstract/connection-manager');\nconst SequelizeErrors = require('../../errors');\nconst { logger } = require('../../utils/logger');\nconst DataTypes = require('../../data-types').mysql;\nconst momentTz = require('moment-timezone');\nconst debug = logger.debugContext('connection:mysql');\nconst parserStore = require('../parserStore')('mysql');\nconst { promisify } = require('util');\n\n/**\n * MySQL Connection Manager\n *\n * Get connections, validate and disconnect them.\n * AbstractConnectionManager pooling use it to handle MySQL specific connections\n * Use https://github.com/sidorares/node-mysql2 to connect with MySQL server\n *\n * @private\n */\nclass ConnectionManager extends AbstractConnectionManager {\n constructor(dialect, sequelize) {\n sequelize.config.port = sequelize.config.port || 3306;\n super(dialect, sequelize);\n this.lib = this._loadDialectModule('mysql2');\n this.refreshTypeParser(DataTypes);\n }\n\n _refreshTypeParser(dataType) {\n parserStore.refresh(dataType);\n }\n\n _clearTypeParser() {\n parserStore.clear();\n }\n\n static _typecast(field, next) {\n if (parserStore.get(field.type)) {\n return parserStore.get(field.type)(field, this.sequelize.options, next);\n }\n return next();\n }\n\n /**\n * Connect with MySQL database based on config, Handle any errors in connection\n * Set the pool handlers on connection.error\n * Also set proper timezone once connection is connected.\n *\n * @param {object} config\n * @returns {Promise<Connection>}\n * @private\n */\n async connect(config) {\n const connectionConfig = {\n host: config.host,\n port: config.port,\n user: config.username,\n flags: '-FOUND_ROWS',\n password: config.password,\n database: config.database,\n timezone: this.sequelize.options.timezone,\n typeCast: ConnectionManager._typecast.bind(this),\n bigNumberStrings: false,\n supportBigNumbers: true,\n ...config.dialectOptions\n };\n\n try {\n const connection = await new Promise((resolve, reject) => {\n const connection = this.lib.createConnection(connectionConfig);\n\n const errorHandler = e => {\n // clean up connect & error event if there is error\n connection.removeListener('connect', connectHandler);\n connection.removeListener('error', connectHandler);\n reject(e);\n };\n\n const connectHandler = () => {\n // clean up error event if connected\n connection.removeListener('error', errorHandler);\n resolve(connection);\n };\n\n // don't use connection.once for error event handling here\n // mysql2 emit error two times in case handshake was failed\n // first error is protocol_lost and second is timeout\n // if we will use `once.error` node process will crash on 2nd error emit\n connection.on('error', errorHandler);\n connection.once('connect', connectHandler);\n });\n\n debug('connection acquired');\n connection.on('error', error => {\n switch (error.code) {\n case 'ESOCKET':\n case 'ECONNRESET':\n case 'EPIPE':\n case 'PROTOCOL_CONNECTION_LOST':\n this.pool.destroy(connection);\n }\n });\n\n if (!this.sequelize.config.keepDefaultTimezone) {\n // set timezone for this connection\n // but named timezone are not directly supported in mysql, so get its offset first\n let tzOffset = this.sequelize.options.timezone;\n tzOffset = /\\//.test(tzOffset) ? momentTz.tz(tzOffset).format('Z') : tzOffset;\n await promisify(cb => connection.query(`SET time_zone = '${tzOffset}'`, cb))();\n }\n\n return connection;\n } catch (err) {\n switch (err.code) {\n case 'ECONNREFUSED':\n throw new SequelizeErrors.ConnectionRefusedError(err);\n case 'ER_ACCESS_DENIED_ERROR':\n throw new SequelizeErrors.
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"names": []
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}
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