/*
* Copyright 2016 the original author or authors.
*
* 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 org.gradle.launcher.daemon.registry;
import org.gradle.api.specs.Spec;
import org.gradle.util.CollectionUtils;
import java.util.ArrayList;
import java.util.Comparator;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
public class DaemonStopEvents {
private static final int RECENTLY = 1;
public static List<DaemonStopEvent> uniqueRecentDaemonStopEvents(final List<DaemonStopEvent> stopEvents) {
final Set<Long> uniqueStoppedPids = new HashSet<Long>(stopEvents.size());
final List<DaemonStopEvent> recentStopEvents = new ArrayList<DaemonStopEvent>(stopEvents.size());
final List<DaemonStopEvent> sortedEvents = CollectionUtils.sort(stopEvents, new Comparator<DaemonStopEvent>() {
@Override
public int compare(DaemonStopEvent event1, DaemonStopEvent event2) {
if (event1.getStatus() != null && event2.getStatus() == null) {
return -1;
} else if (event1.getStatus() == null && event2.getStatus() != null) {
return 1;
} else if (event1.getStatus() != null && event2.getStatus() != null) {
return event2.getStatus().compareTo(event1.getStatus());
}
return 0;
}
});
// User likely doesn't care about daemons that stopped a long time ago
for (DaemonStopEvent event : sortedEvents) {
Long pid = event.getPid();
if (event.occurredInLastHours(RECENTLY) && !uniqueStoppedPids.contains(pid)) {
// We can only determine if two DaemonStopEvent point at the same daemon if we know the PIDs
if (pid != null) {
uniqueStoppedPids.add(pid);
}
recentStopEvents.add(event);
}
}
return recentStopEvents;
}
public static List<DaemonStopEvent> oldStopEvents(final List<DaemonStopEvent> stopEvents) {
return CollectionUtils.filter(stopEvents, new Spec<DaemonStopEvent>() {
@Override
public boolean isSatisfiedBy(DaemonStopEvent event) {
return !event.occurredInLastHours(RECENTLY);
}
});
}
}