co.cask.cdap.metrics.collect.LocalMetricsCollectionService Maven / Gradle / Ivy
/*
* Copyright © 2014 Cask Data, Inc.
*
* 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 co.cask.cdap.metrics.collect;
import co.cask.cdap.api.metrics.MetricStore;
import co.cask.cdap.api.metrics.MetricValues;
import co.cask.cdap.common.conf.CConfiguration;
import co.cask.cdap.common.conf.Constants;
import co.cask.cdap.proto.Id;
import com.google.common.base.Throwables;
import com.google.common.collect.ImmutableMap;
import com.google.inject.Inject;
import com.google.inject.Singleton;
import org.apache.twill.common.Threads;
import java.util.Iterator;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;
/**
* A {@link co.cask.cdap.api.metrics.MetricsCollectionService} that writes to MetricsTable directly.
* It also has a scheduling job that clean up old metrics periodically.
*/
@Singleton
public final class LocalMetricsCollectionService extends AggregatedMetricsCollectionService {
public static final ImmutableMap METRICS_PROCESSOR_CONTEXT =
ImmutableMap.of(Constants.Metrics.Tag.NAMESPACE, Id.Namespace.SYSTEM.getId(),
Constants.Metrics.Tag.COMPONENT, Constants.Service.METRICS_PROCESSOR);
private final CConfiguration cConf;
private final MetricStore metricStore;
private ScheduledExecutorService scheduler;
@Inject
public LocalMetricsCollectionService(CConfiguration cConf, MetricStore metricStore) {
this.cConf = cConf;
this.metricStore = metricStore;
metricStore.setMetricsContext(this.getContext(METRICS_PROCESSOR_CONTEXT));
}
@Override
protected void publish(Iterator metrics) throws Exception {
while (metrics.hasNext()) {
MetricValues metric = metrics.next();
metricStore.add(metric);
}
}
@Override
protected void startUp() throws Exception {
super.startUp();
// It will only do cleanup if the underlying table doesn't supports TTL.
scheduler = Executors.newSingleThreadScheduledExecutor(Threads.createDaemonThreadFactory("metrics-cleanup"));
long retentionSecs = cConf.getLong(Constants.Metrics.RETENTION_SECONDS + ".1.seconds",
TimeUnit.HOURS.toSeconds(Constants.Metrics.DEFAULT_RETENTION_HOURS));
// Try right away if there's anything to cleanup, then we'll schedule to do that periodically
scheduler.schedule(createCleanupTask(retentionSecs), 1, TimeUnit.SECONDS);
}
@Override
protected void shutDown() throws Exception {
if (scheduler != null) {
scheduler.shutdownNow();
}
super.shutDown();
}
/**
* Creates a task for cleanup.
* @param retention Retention in seconds.
*/
private Runnable createCleanupTask(final long retention) {
return new Runnable() {
@Override
public void run() {
// We perform CleanUp only in LocalMetricsCollectionService , where TTL is NOT supported
// by underlying data store.
long currentTime = TimeUnit.SECONDS.convert(System.currentTimeMillis(), TimeUnit.MILLISECONDS);
long deleteBefore = currentTime - retention;
try {
metricStore.deleteBefore(deleteBefore);
} catch (Exception e) {
throw Throwables.propagate(e);
}
scheduler.schedule(this, 1, TimeUnit.HOURS);
}
};
}
}