gobblin.runtime.scheduler.DefaultJobSpecSchedulerListenerImpl.java Source code

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Here is the source code for gobblin.runtime.scheduler.DefaultJobSpecSchedulerListenerImpl.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.runtime.scheduler;

import org.slf4j.Logger;

import com.google.common.base.Optional;

import gobblin.runtime.api.JobSpec;
import gobblin.runtime.api.JobSpecSchedule;
import gobblin.runtime.api.JobSpecSchedulerListener;

/**
 * Default no-op implementation for {@link JobSpecSchedulerListener}. It may optionally log
 * the callbacks.
 */
public class DefaultJobSpecSchedulerListenerImpl implements JobSpecSchedulerListener {
    protected final Optional<Logger> _log;

    /**
     * Constructor
     * @param log   if no log is specified, the logging will be done. Logging level is INFO.
     */
    public DefaultJobSpecSchedulerListenerImpl(Optional<Logger> log) {
        _log = log;
    }

    public DefaultJobSpecSchedulerListenerImpl(Logger log) {
        this(Optional.of(log));
    }

    /** Constructor with no logging */
    public DefaultJobSpecSchedulerListenerImpl() {
        this(Optional.<Logger>absent());
    }

    /** {@inheritDoc} */
    @Override
    public void onJobScheduled(JobSpecSchedule jobSchedule) {
        if (_log.isPresent()) {
            _log.get().info("Job scheduled: " + jobSchedule);
        }
    }

    /** {@inheritDoc} */
    @Override
    public void onJobUnscheduled(JobSpecSchedule jobSchedule) {
        if (_log.isPresent()) {
            _log.get().info("Job unscheduled: " + jobSchedule);
        }
    }

    /** {@inheritDoc} */
    @Override
    public void onJobTriggered(JobSpec jobSpec) {
        if (_log.isPresent()) {
            _log.get().info("Job triggered: " + jobSpec);
        }
    }

}