/*
* 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 org.apache.ignite.internal.visor.compute;
import java.util.HashMap;
import java.util.Map;
import org.apache.ignite.internal.IgniteEx;
import org.apache.ignite.internal.processors.timeout.GridTimeoutObjectAdapter;
import org.apache.ignite.internal.util.typedef.internal.S;
import static org.apache.ignite.internal.visor.util.VisorTaskUtils.VISOR_TASK_EVTS;
/**
* Holder class to store information in node local map between data collector task executions.
*/
public class VisorComputeMonitoringHolder {
/** Task monitoring events holder key. */
public static final String COMPUTE_MONITORING_HOLDER_KEY = "VISOR_COMPUTE_MONITORING_KEY";
/** Visors that collect events (Visor instance key -> collect events since last cleanup check) */
private final Map<String, Boolean> listenVisor = new HashMap<>();
/** If cleanup process not scheduled. */
private boolean cleanupStopped = true;
/** Timeout between disable events check. */
protected static final int CLEANUP_TIMEOUT = 2 * 60 * 1000;
/**
* Start collect events for Visor instance.
*
* @param ignite Grid.
* @param visorKey unique Visor instance key.
*/
public void startCollect(IgniteEx ignite, String visorKey) {
synchronized (listenVisor) {
if (cleanupStopped) {
scheduleCleanupJob(ignite);
cleanupStopped = false;
}
listenVisor.put(visorKey, Boolean.TRUE);
ignite.events().enableLocal(VISOR_TASK_EVTS);
}
}
/**
* Check if collect events may be disable.
*
* @param ignite Grid.
* @return {@code true} if task events should remain enabled.
*/
private boolean tryDisableEvents(IgniteEx ignite) {
if (!listenVisor.values().contains(Boolean.TRUE)) {
listenVisor.clear();
ignite.events().disableLocal(VISOR_TASK_EVTS);
}
// Return actual state. It could stay the same if events explicitly enabled in configuration.
return ignite.allEventsUserRecordable(VISOR_TASK_EVTS);
}
/**
* Disable collect events for Visor instance.
*
* @param g Grid.
* @param visorKey Unique Visor instance key.
*/
public void stopCollect(IgniteEx g, String visorKey) {
synchronized (listenVisor) {
listenVisor.remove(visorKey);
tryDisableEvents(g);
}
}
/**
* Schedule cleanup process for events monitoring.
*
* @param ignite grid.
*/
private void scheduleCleanupJob(final IgniteEx ignite) {
ignite.context().timeout().addTimeoutObject(new GridTimeoutObjectAdapter(CLEANUP_TIMEOUT) {
@Override public void onTimeout() {
synchronized (listenVisor) {
if (tryDisableEvents(ignite)) {
for (String visorKey : listenVisor.keySet())
listenVisor.put(visorKey, Boolean.FALSE);
scheduleCleanupJob(ignite);
}
else
cleanupStopped = true;
}
}
});
}
/** {@inheritDoc} */
@Override public String toString() {
return S.toString(VisorComputeMonitoringHolder.class, this);
}
}