| /*! |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| */ |
| |
| import SwPlugin from '../core/SwPlugin'; |
| import ContextManager from '../trace/context/ContextManager'; |
| import { Component } from '../trace/Component'; |
| import Tag from '../Tag'; |
| import { SpanLayer } from '../proto/language-agent/Tracing_pb'; |
| import PluginInstaller from '../core/PluginInstaller'; |
| import config from '../config/AgentConfig'; |
| |
| class MySQLPlugin implements SwPlugin { |
| readonly module = 'mysql'; |
| readonly versions = '*'; |
| |
| install(installer: PluginInstaller): void { |
| const Connection = installer.require('mysql/lib/Connection'); |
| const _query = Connection.prototype.query; |
| |
| Connection.prototype.query = function(sql: any, values: any, cb: any) { |
| const wrapCallback = (_cb: any) => { |
| return function(this: any, error: any, results: any, fields: any) { |
| span.resync(); |
| |
| if (error) |
| span.error(error); |
| |
| span.stop(); |
| |
| return _cb.call(this, error, results, fields); |
| } |
| }; |
| |
| let query: any; |
| |
| const host = `${this.config.host}:${this.config.port}`; |
| const span = ContextManager.current.newExitSpan('mysql/query', host).start(); |
| |
| try { |
| span.component = Component.MYSQL; |
| span.layer = SpanLayer.DATABASE; |
| span.peer = host; |
| |
| span.tag(Tag.dbType('Mysql')); |
| span.tag(Tag.dbInstance(`${this.config.database}`)); |
| |
| let _sql: any; |
| let _values: any; |
| let streaming: any; |
| |
| if (typeof sql === 'function') { |
| sql = wrapCallback(sql); |
| |
| } else if (typeof sql === 'object') { |
| _sql = sql.sql; |
| |
| if (typeof values === 'function') { |
| values = wrapCallback(values); |
| _values = sql.values; |
| |
| } else if (values !== undefined) { |
| _values = values; |
| |
| if (typeof cb === 'function') { |
| cb = wrapCallback(cb); |
| } else { |
| streaming = true; |
| } |
| |
| } else { |
| streaming = true; |
| } |
| |
| } else { |
| _sql = sql; |
| |
| if (typeof values === 'function') { |
| values = wrapCallback(values); |
| |
| } else if (values !== undefined) { |
| _values = values; |
| |
| if (typeof cb === 'function') { |
| cb = wrapCallback(cb); |
| } else { |
| streaming = true; |
| } |
| |
| } else { |
| streaming = true; |
| } |
| } |
| |
| span.tag(Tag.dbStatement(`${_sql}`)); |
| |
| if (_values) { |
| let vals = _values.map((v: any) => v === undefined ? 'undefined' : JSON.stringify(v)).join(', '); |
| |
| if (vals.length > config.sql_parameters_max_length) |
| vals = vals.splice(0, config.sql_parameters_max_length); |
| |
| span.tag(Tag.dbSqlParameters(`[${vals}]`)); |
| } |
| |
| query = _query.call(this, sql, values, cb); |
| |
| if (streaming) { |
| query.on('error', (e: any) => { |
| span.resync(); |
| span.error(e); |
| }); |
| |
| query.on('end', () => { |
| span.resync(); // may have already been done in 'error' but safe to do multiple times |
| span.stop() |
| }); |
| } |
| |
| } catch (e) { |
| span.error(e); |
| span.stop(); |
| |
| throw e; |
| } |
| |
| span.async(); |
| |
| return query; |
| }; |
| } |
| } |
| |
| // noinspection JSUnusedGlobalSymbols |
| export default new MySQLPlugin(); |