/*
* 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 java.io.Closeable;
import java.io.IOException;
import java.util.List;
import java.util.concurrent.ExecutorService;
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;
import gobblin.runtime.api.JobSpecSchedulerListenersContainer;
import gobblin.util.callbacks.CallbacksDispatcher;
/**
* Manages a list of {@link JobSpecSchedulerListener}s and can dispatch callbacks to them.
*/
public class JobSpecSchedulerListeners
implements JobSpecSchedulerListenersContainer, JobSpecSchedulerListener, Closeable {
private CallbacksDispatcher<JobSpecSchedulerListener> _dispatcher;
public JobSpecSchedulerListeners(Optional<ExecutorService> execService,
Optional<Logger> log) {
_dispatcher = new CallbacksDispatcher<>(execService, log);
}
public JobSpecSchedulerListeners(Logger log) {
_dispatcher = new CallbacksDispatcher<>(log);
}
public JobSpecSchedulerListeners() {
_dispatcher = new CallbacksDispatcher<>();
}
/** {@inheritDoc} */
@Override public void registerJobSpecSchedulerListener(JobSpecSchedulerListener listener) {
_dispatcher.addListener(listener);
}
/** {@inheritDoc} */
@Override public void unregisterJobSpecSchedulerListener(JobSpecSchedulerListener listener) {
_dispatcher.removeListener(listener);
}
/** {@inheritDoc} */
@Override public List<JobSpecSchedulerListener> getJobSpecSchedulerListeners() {
return _dispatcher.getListeners();
}
@Override public void onJobScheduled(JobSpecSchedule jobSchedule) {
try {
_dispatcher.execCallbacks(new JobScheduledCallback(jobSchedule));
} catch (InterruptedException e) {
_dispatcher.getLog().warn("onJobScheduled interrupted.");
}
}
@Override public void onJobTriggered(JobSpec jobSpec) {
try {
_dispatcher.execCallbacks(new JobTriggeredCallback(jobSpec));
} catch (InterruptedException e) {
_dispatcher.getLog().warn("onJobTriggered interrupted.");
}
}
@Override public void onJobUnscheduled(JobSpecSchedule jobSchedule) {
try {
_dispatcher.execCallbacks(new JobUnscheduledCallback(jobSchedule));
} catch (InterruptedException e) {
_dispatcher.getLog().warn("onJobUnscheduled interrupted.");
}
}
@Override
public void registerWeakJobSpecSchedulerListener(JobSpecSchedulerListener listener) {
_dispatcher.addWeakListener(listener);
}
@Override
public void close()
throws IOException {
_dispatcher.close();
}
}