gobblin.scheduler.SchedulerDaemon.java Source code

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Here is the source code for gobblin.scheduler.SchedulerDaemon.java

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/*
 * 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 gobblin.scheduler;

import java.util.Properties;
import java.util.UUID;

import org.apache.commons.configuration.ConfigurationConverter;
import org.apache.commons.configuration.PropertiesConfiguration;

import lombok.extern.slf4j.Slf4j;

import gobblin.runtime.app.ServiceBasedAppLauncher;
import gobblin.util.PropertiesUtils;

/**
 * A class that runs the {@link JobScheduler} in a daemon process for standalone deployment.
 *
 * @author Yinan Li
 */
@Slf4j
public class SchedulerDaemon extends ServiceBasedAppLauncher {

    private SchedulerDaemon(Properties defaultProperties, Properties customProperties) throws Exception {
        this(PropertiesUtils.combineProperties(defaultProperties, customProperties));
    }

    public SchedulerDaemon(Properties properties) throws Exception {
        super(properties, getAppName(properties));
        SchedulerService schedulerService = new SchedulerService(properties);
        addService(schedulerService);
        addService(new JobScheduler(properties, schedulerService));
    }

    private static String getAppName(Properties properties) {
        return properties.getProperty(ServiceBasedAppLauncher.APP_NAME, "SchedulerDaemon-" + UUID.randomUUID());
    }

    public static void main(String[] args) throws Exception {
        if (args.length < 1 || args.length > 2) {
            System.err.println(
                    "Usage: SchedulerDaemon <default configuration properties file> [custom configuration properties file]");
            System.exit(1);
        }

        // Load default framework configuration properties
        Properties defaultProperties = ConfigurationConverter.getProperties(new PropertiesConfiguration(args[0]));

        // Load custom framework configuration properties (if any)
        Properties customProperties = new Properties();
        if (args.length == 2) {
            customProperties.putAll(ConfigurationConverter.getProperties(new PropertiesConfiguration(args[1])));
        }

        log.debug("Scheduler Daemon::main starting with defaultProperties: {}, customProperties: {}",
                defaultProperties, customProperties);
        // Start the scheduler daemon
        new SchedulerDaemon(defaultProperties, customProperties).start();
    }
}