sequelize/lib/dialects/oracle/connection-manager.js

Sequelize is a promise-based Node.js ORM tool for Postgres, MySQL, MariaDB, SQLite, Microsoft SQL Server, Amazon Redshift and Snowflake’s Data Cloud. It features solid transaction support, relations, eager and lazy loading, read replication and more.

"use strict";
var __defProp = Object.defineProperty;
var __getOwnPropSymbols = Object.getOwnPropertySymbols;
var __hasOwnProp = Object.prototype.hasOwnProperty;
var __propIsEnum = Object.prototype.propertyIsEnumerable;
var __defNormalProp = (obj, key, value) => key in obj ? __defProp(obj, key, { enumerable: true, configurable: true, writable: true, value }) : obj[key] = value;
var __spreadValues = (a, b) => {
  for (var prop in b || (b = {}))
    if (__hasOwnProp.call(b, prop))
      __defNormalProp(a, prop, b[prop]);
  if (__getOwnPropSymbols)
    for (var prop of __getOwnPropSymbols(b)) {
      if (__propIsEnum.call(b, prop))
        __defNormalProp(a, prop, b[prop]);
    }
  return a;
};
var __markAsModule = (target) => __defProp(target, "__esModule", { value: true });
var __export = (target, all) => {
  __markAsModule(target);
  for (var name in all)
    __defProp(target, name, { get: all[name], enumerable: true });
};
__export(exports, {
  OracleConnectionManager: () => OracleConnectionManager
});
const AbstractConnectionManager = require("../abstract/connection-manager");
const SequelizeErrors = require("../../errors");
const parserStore = require("../parserStore")("oracle");
const { logger } = require("../../utils/logger");
const debug = logger.debugContext("connection:oracle");
const DataTypes = require("../../data-types").oracle;
const { promisify } = require("util");
class OracleConnectionManager extends AbstractConnectionManager {
  constructor(dialect, sequelize) {
    super(dialect, sequelize);
    this.sequelize = sequelize;
    this.sequelize.config.port = this.sequelize.config.port || 1521;
    this.lib = this._loadDialectModule("oracledb");
    this.extendLib();
    this.refreshTypeParser(DataTypes);
  }
  extendLib() {
    this.lib.maxRows = 1e3;
    if (this.sequelize.config && "dialectOptions" in this.sequelize.config) {
      const dialectOptions = this.sequelize.config.dialectOptions;
      if (dialectOptions && "maxRows" in dialectOptions) {
        this.lib.maxRows = this.sequelize.config.dialectOptions.maxRows;
      }
      if (dialectOptions && "fetchAsString" in dialectOptions) {
        this.lib.fetchAsString = this.sequelize.config.dialectOptions.fetchAsString;
      } else {
        this.lib.fetchAsString = [this.lib.CLOB];
      }
    }
    this.lib.fetchAsBuffer = [this.lib.BLOB];
  }
  checkConfigObject(config) {
    if (config.database.length === 0) {
      let errorToThrow = "The database cannot be blank, you must specify the database name (which correspond to the service name";
      errorToThrow += "\n from tnsnames.ora : (HOST = mymachine.example.com)(PORT = 1521)(SERVICE_NAME = orcl)";
      throw new Error(errorToThrow);
    }
    if (!config.host || config.host.length === 0) {
      throw new Error("You have to specify the host");
    }
    if (config.database.indexOf("/") === -1) {
      let connectString = config.host;
      if (config.port && config.port !== 0) {
        connectString += `:${config.port}`;
      } else {
        connectString += ":1521";
      }
      connectString += `/${config.database}`;
      config.database = connectString;
    }
  }
  _refreshTypeParser(dataType) {
    parserStore.refresh(dataType);
  }
  _clearTypeParser() {
    parserStore.clear();
  }
  async connect(config) {
    const connectionConfig = __spreadValues({
      user: config.username,
      host: config.host,
      port: config.port,
      database: config.database,
      password: config.password,
      externalAuth: config.externalAuth,
      stmtCacheSize: 0,
      connectString: config.database
    }, config.dialectOptions);
    try {
      this.checkConfigObject(connectionConfig);
      connectionConfig.connectString = connectionConfig.database;
      if (config.dialectOptions) {
        Object.keys(config.dialectOptions).forEach((key) => {
          connectionConfig[key] = config.dialectOptions[key];
        });
      }
      const connection = await this.lib.getConnection(connectionConfig);
      debug("connection acquired");
      connection.on("error", (error) => {
        switch (error.code) {
          case "ESOCKET":
          case "ECONNRESET":
          case "EPIPE":
          case "PROTOCOL_CONNECTION_LOST":
            this.pool.destroy(connection);
        }
      });
      return connection;
    } catch (err) {
      let errorCode = err.message.split(":");
      errorCode = errorCode[0];
      switch (errorCode) {
        case "ORA-12560":
        case "ORA-12154":
        case "ORA-12505":
        case "ORA-12514":
          throw new SequelizeErrors.ConnectionRefusedError(err);
        case "ORA-28000":
        case "ORA-28040":
        case "ORA-01017":
          throw new SequelizeErrors.AccessDeniedError(err);
        case "ORA-12541":
          throw new SequelizeErrors.HostNotReachableError(err);
        case "ORA-12170":
          throw new SequelizeErrors.ConnectionTimedOutError(err);
        default:
          throw new SequelizeErrors.ConnectionError(err);
      }
    }
  }
  async disconnect(connection) {
    if (!connection.isHealthy()) {
      debug("connection tried to disconnect but was already at CLOSED state");
      return;
    }
    return await promisify((callback) => connection.close(callback))();
  }
  validate(connection) {
    return connection && connection.isHealthy();
  }
}
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