| /*! |
| * |
| * 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 * as grpc from '@grpc/grpc-js'; |
| import { connectivityState } from '@grpc/grpc-js'; |
| |
| import * as packageInfo from '../../../../../package.json'; |
| import { createLogger } from '../../../../logging'; |
| import Client from './Client'; |
| import { ManagementServiceClient } from '../../../../proto/management/Management_grpc_pb'; |
| import AuthInterceptor from '../AuthInterceptor'; |
| import { InstancePingPkg, InstanceProperties } from '../../../../proto/management/Management_pb'; |
| import config from '../../../../config/AgentConfig'; |
| import { KeyStringValuePair } from '../../../../proto/common/Common_pb'; |
| import * as os from 'os'; |
| |
| const logger = createLogger(__filename); |
| |
| export default class HeartbeatClient implements Client { |
| private readonly managementServiceClient: ManagementServiceClient; |
| private heartbeatTimer?: NodeJS.Timeout; |
| |
| constructor() { |
| this.managementServiceClient = new ManagementServiceClient( |
| config.collectorAddress, |
| config.secure ? grpc.credentials.createSsl() : grpc.credentials.createInsecure(), |
| ); |
| } |
| |
| get isConnected(): boolean { |
| return this.managementServiceClient.getChannel().getConnectivityState(true) === connectivityState.READY; |
| } |
| |
| start() { |
| if (this.heartbeatTimer) { |
| logger.warn(` |
| The heartbeat timer has already been scheduled, |
| this may be a potential bug, please consider reporting |
| this to ${packageInfo.bugs.url} |
| `); |
| return; |
| } |
| |
| const keepAlivePkg = new InstancePingPkg() |
| .setService(config.serviceName) |
| .setServiceinstance(config.serviceInstance); |
| |
| const instanceProperties = new InstanceProperties() |
| .setService(config.serviceName) |
| .setServiceinstance(config.serviceInstance) |
| .setPropertiesList([ |
| new KeyStringValuePair().setKey('language').setValue('NodeJS'), |
| new KeyStringValuePair().setKey('OS Name').setValue(os.platform()), |
| new KeyStringValuePair().setValue('hostname').setValue(os.hostname()), |
| new KeyStringValuePair().setValue('Process No.').setValue(`${process.pid}`), |
| ]); |
| |
| this.heartbeatTimer = setInterval(() => { |
| this.managementServiceClient.reportInstanceProperties(instanceProperties, AuthInterceptor(), (error, _) => { |
| if (error) { |
| logger.error('Failed to send heartbeat', error); |
| } |
| }); |
| this.managementServiceClient.keepAlive(keepAlivePkg, AuthInterceptor(), (error, _) => { |
| if (error) { |
| logger.error('Failed to send heartbeat', error); |
| } |
| }); |
| }, 20000).unref(); |
| } |
| |
| flush(): Promise<any> | null { |
| logger.warn('HeartbeatClient does not need flush().'); |
| return null; |
| } |
| } |