com.hurence.logisland.runner.StreamProcessingRunner Maven / Gradle / Ivy
/**
* Copyright (C) 2016 Hurence ([email protected])
*
* Licensed 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 com.hurence.logisland.runner;
import com.hurence.logisland.BannerLoader;
import com.hurence.logisland.component.ComponentFactory;
import com.hurence.logisland.config.ConfigReader;
import com.hurence.logisland.config.LogislandConfiguration;
import com.hurence.logisland.engine.EngineContext;
import org.apache.commons.cli.*;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.nio.channels.IllegalChannelGroupException;
import java.util.Optional;
public class StreamProcessingRunner {
private static Logger logger = LoggerFactory.getLogger(StreamProcessingRunner.class);
/**
* main entry point
*
* @param args
*/
public static void main(String[] args) {
logger.info("starting StreamProcessingRunner");
//////////////////////////////////////////
// Commande lien management
Parser parser = new GnuParser();
Options options = new Options();
String helpMsg = "Print this message.";
Option help = new Option("help", helpMsg);
options.addOption(help);
OptionBuilder.withArgName("conf");
OptionBuilder.withLongOpt("config-file");
OptionBuilder.isRequired();
OptionBuilder.hasArg();
OptionBuilder.withDescription("config file path");
Option conf = OptionBuilder.create("conf");
options.addOption(conf);
Optional engineInstance = Optional.empty();
try {
System.out.println(BannerLoader.loadBanner());
// parse the command line arguments
CommandLine line = parser.parse(options, args);
String configFile = line.getOptionValue("conf");
// load the YAML config
LogislandConfiguration sessionConf = ConfigReader.loadConfig(configFile);
// instantiate engine and all the processor from the config
engineInstance = ComponentFactory.getEngineContext(sessionConf.getEngine());
if (!engineInstance.isPresent()) {
throw new IllegalArgumentException("engineInstance could not be instantiated");
}
if (!engineInstance.get().isValid()) {
throw new IllegalArgumentException("engineInstance is not valid with input configuration !");
}
logger.info("starting Logisland session version {}", sessionConf.getVersion());
logger.info(sessionConf.getDocumentation());
} catch (Exception e) {
logger.error("unable to launch runner", e);
System.exit(-1);
}
String engineName = engineInstance.get().getEngine().getIdentifier();
try {
// start the engine
EngineContext engineContext = engineInstance.get();
logger.info("start engine {}", engineName);
engineInstance.get().getEngine().start(engineContext);
logger.info("awaitTermination for engine {}", engineName);
engineContext.getEngine().awaitTermination(engineContext);
System.exit(0);
} catch (Exception e) {
logger.error("something went bad while running the job {} : {}", engineName, e);
System.exit(-1);
}
}
}
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