| /** |
| * 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.distributedlog.service; |
| |
| import static org.apache.distributedlog.util.CommandLineUtils.getOptionalBooleanArg; |
| import static org.apache.distributedlog.util.CommandLineUtils.getOptionalIntegerArg; |
| import static org.apache.distributedlog.util.CommandLineUtils.getOptionalStringArg; |
| |
| import com.twitter.finagle.stats.NullStatsReceiver; |
| import com.twitter.finagle.stats.StatsReceiver; |
| import java.io.IOException; |
| import org.apache.bookkeeper.stats.NullStatsProvider; |
| import org.apache.bookkeeper.stats.StatsProvider; |
| import org.apache.bookkeeper.util.ReflectionUtils; |
| import org.apache.commons.cli.BasicParser; |
| import org.apache.commons.cli.CommandLine; |
| import org.apache.commons.cli.HelpFormatter; |
| import org.apache.commons.cli.Options; |
| import org.apache.commons.cli.ParseException; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| |
| /** |
| * The launcher to run monitor service. |
| */ |
| public class MonitorServiceApp { |
| |
| private static final Logger logger = LoggerFactory.getLogger(MonitorServiceApp.class); |
| |
| static final String USAGE = "MonitorService [-u <uri>] [-c <conf>] [-s serverset]"; |
| |
| final String[] args; |
| final Options options = new Options(); |
| |
| private MonitorServiceApp(String[] args) { |
| this.args = args; |
| // prepare options |
| options.addOption("u", "uri", true, "DistributedLog URI"); |
| options.addOption("c", "conf", true, "DistributedLog Configuration File"); |
| options.addOption("s", "serverset", true, "Proxy Server Set"); |
| options.addOption("i", "interval", true, "Check interval"); |
| options.addOption("d", "region", true, "Region ID"); |
| options.addOption("p", "provider", true, "DistributedLog Stats Provider"); |
| options.addOption("f", "filter", true, "Filter streams by regex"); |
| options.addOption("w", "watch", false, "Watch stream changes under a given namespace"); |
| options.addOption("n", "instance_id", true, "Instance ID"); |
| options.addOption("t", "total_instances", true, "Total instances"); |
| options.addOption("hck", "heartbeat-num-checks", true, "Send a heartbeat after num checks"); |
| options.addOption("hsci", "handshake-with-client-info", false, "Enable handshaking with client info"); |
| } |
| |
| void printUsage() { |
| HelpFormatter helpFormatter = new HelpFormatter(); |
| helpFormatter.printHelp(USAGE, options); |
| } |
| |
| private void run() { |
| try { |
| logger.info("Running monitor service."); |
| BasicParser parser = new BasicParser(); |
| CommandLine cmdline = parser.parse(options, args); |
| runCmd(cmdline); |
| } catch (ParseException pe) { |
| printUsage(); |
| Runtime.getRuntime().exit(-1); |
| } catch (IOException ie) { |
| logger.error("Failed to start monitor service : ", ie); |
| Runtime.getRuntime().exit(-1); |
| } |
| } |
| |
| void runCmd(CommandLine cmdline) throws IOException { |
| StatsProvider statsProvider = new NullStatsProvider(); |
| if (cmdline.hasOption("p")) { |
| String providerClass = cmdline.getOptionValue("p"); |
| statsProvider = ReflectionUtils.newInstance(providerClass, StatsProvider.class); |
| } |
| StatsReceiver statsReceiver = NullStatsReceiver.get(); |
| |
| final MonitorService monitorService = new MonitorService( |
| getOptionalStringArg(cmdline, "u"), |
| getOptionalStringArg(cmdline, "c"), |
| getOptionalStringArg(cmdline, "s"), |
| getOptionalIntegerArg(cmdline, "i"), |
| getOptionalIntegerArg(cmdline, "d"), |
| getOptionalStringArg(cmdline, "f"), |
| getOptionalIntegerArg(cmdline, "n"), |
| getOptionalIntegerArg(cmdline, "t"), |
| getOptionalIntegerArg(cmdline, "hck"), |
| getOptionalBooleanArg(cmdline, "hsci"), |
| getOptionalBooleanArg(cmdline, "w"), |
| getOptionalBooleanArg(cmdline, "mx"), |
| statsReceiver, |
| statsProvider); |
| |
| monitorService.runServer(); |
| |
| Runtime.getRuntime().addShutdownHook(new Thread() { |
| @Override |
| public void run() { |
| logger.info("Closing monitor service."); |
| monitorService.close(); |
| logger.info("Closed monitor service."); |
| } |
| }); |
| try { |
| monitorService.join(); |
| } catch (InterruptedException ie) { |
| logger.warn("Interrupted when waiting monitor service to be finished : ", ie); |
| } |
| } |
| |
| public static void main(String[] args) { |
| final MonitorServiceApp launcher = new MonitorServiceApp(args); |
| launcher.run(); |
| } |
| } |