88 lines
2.8 KiB
JavaScript
88 lines
2.8 KiB
JavaScript
/*
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* Copyright © 2016-2018 The Thingsboard Authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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const config = require('config'),
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kafka = require('kafka-node'),
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ConsumerGroup = kafka.ConsumerGroup,
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Producer = kafka.Producer,
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JsInvokeMessageProcessor = require('./api/jsInvokeMessageProcessor'),
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logger = require('./config/logger')('main');
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var kafkaClient;
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(async() => {
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try {
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logger.info('Starting ThingsBoard JavaScript Executor Microservice...');
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const kafkaBootstrapServers = config.get('kafka.bootstrap.servers');
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const kafkaRequestTopic = config.get('kafka.request_topic');
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logger.info('Kafka Bootstrap Servers: %s', kafkaBootstrapServers);
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logger.info('Kafka Requests Topic: %s', kafkaRequestTopic);
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kafkaClient = new kafka.KafkaClient({kafkaHost: kafkaBootstrapServers});
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var consumer = new ConsumerGroup(
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{
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kafkaHost: kafkaBootstrapServers,
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groupId: 'js-executor-group',
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autoCommit: true,
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encoding: 'buffer'
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},
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kafkaRequestTopic
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);
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var producer = new Producer(kafkaClient);
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producer.on('error', (err) => {
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logger.error('Unexpected kafka producer error: %s', err.message);
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logger.error(err.stack);
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});
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var messageProcessor = new JsInvokeMessageProcessor(producer);
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producer.on('ready', () => {
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consumer.on('message', (message) => {
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messageProcessor.onJsInvokeMessage(message);
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});
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logger.info('Started ThingsBoard JavaScript Executor Microservice.');
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});
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} catch (e) {
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logger.error('Failed to start ThingsBoard JavaScript Executor Microservice: %s', e.message);
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logger.error(e.stack);
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exit(-1);
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}
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})();
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process.on('exit', function () {
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exit(0);
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});
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function exit(status) {
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logger.info('Exiting with status: %d ...', status);
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if (kafkaClient) {
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logger.info('Stopping Kafka Client...');
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var _kafkaClient = kafkaClient;
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kafkaClient = null;
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_kafkaClient.close(() => {
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logger.info('Kafka Client stopped.');
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process.exit(status);
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});
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} else {
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process.exit(status);
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}
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}
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