| /* |
| * 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. |
| */ |
| package org.apache.pulsar.functions.worker; |
| |
| import static org.apache.commons.lang3.StringUtils.isBlank; |
| import com.beust.jcommander.JCommander; |
| import com.beust.jcommander.Parameter; |
| import lombok.extern.slf4j.Slf4j; |
| import org.apache.pulsar.common.util.ShutdownUtil; |
| import org.apache.pulsar.docs.tools.CmdGenerateDocs; |
| |
| /** |
| * A starter to start function worker. |
| */ |
| @Slf4j |
| public class FunctionWorkerStarter { |
| |
| private static class WorkerArguments { |
| @Parameter( |
| names = { "-c", "--conf" }, |
| description = "Configuration File for Function Worker") |
| private String configFile; |
| |
| @Parameter(names = {"-h", "--help"}, description = "Show this help message") |
| private boolean help = false; |
| |
| @Parameter(names = {"-g", "--generate-docs"}, description = "Generate docs") |
| private boolean generateDocs = false; |
| } |
| |
| public static void main(String[] args) throws Exception { |
| WorkerArguments workerArguments = new WorkerArguments(); |
| JCommander commander = new JCommander(workerArguments); |
| commander.setProgramName("FunctionWorkerStarter"); |
| |
| // parse args by commander |
| commander.parse(args); |
| |
| if (workerArguments.help) { |
| commander.usage(); |
| return; |
| } |
| |
| if (workerArguments.generateDocs) { |
| CmdGenerateDocs cmd = new CmdGenerateDocs("pulsar"); |
| cmd.addCommand("functions-worker", workerArguments); |
| cmd.run(null); |
| return; |
| } |
| |
| WorkerConfig workerConfig; |
| if (isBlank(workerArguments.configFile)) { |
| workerConfig = new WorkerConfig(); |
| } else { |
| workerConfig = WorkerConfig.load(workerArguments.configFile); |
| } |
| |
| final Worker worker = new Worker(workerConfig); |
| try { |
| worker.start(); |
| } catch (Throwable th) { |
| log.error("Encountered error in function worker.", th); |
| worker.stop(); |
| ShutdownUtil.triggerImmediateForcefulShutdown(); |
| } |
| Runtime.getRuntime().addShutdownHook(new Thread(() -> { |
| log.info("Stopping function worker service..."); |
| worker.stop(); |
| })); |
| } |
| } |