| /* |
| * 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.jackrabbit.oak.spi.gc; |
| |
| import static com.google.common.base.Preconditions.checkNotNull; |
| import static com.google.common.collect.Sets.newConcurrentHashSet; |
| |
| import java.util.Collection; |
| import java.util.Set; |
| |
| import com.google.common.collect.Sets; |
| import org.apache.jackrabbit.oak.spi.whiteboard.Registration; |
| import org.jetbrains.annotations.NotNull; |
| |
| /** |
| * This {@link GCMonitor} implementation simply delegates all its call |
| * to registered monitors. |
| */ |
| public class DelegatingGCMonitor implements GCMonitor { |
| private final Set<GCMonitor> gcMonitors; |
| |
| /** |
| * New instance with an initial set of delegates (which cannot be unregistered). |
| * @param gcMonitors |
| */ |
| public DelegatingGCMonitor(@NotNull Collection<? extends GCMonitor> gcMonitors) { |
| this.gcMonitors = newConcurrentHashSet(); |
| this.gcMonitors.addAll(gcMonitors); |
| } |
| |
| /** |
| * New instance without any delegate. |
| */ |
| public DelegatingGCMonitor() { |
| this(Sets.<GCMonitor>newConcurrentHashSet()); |
| } |
| |
| /** |
| * Register a {@link GCMonitor}. |
| * @param gcMonitor |
| * @return a {@link Registration} instance, which removes the registered |
| * {@code GCMonitor} instance when called. |
| */ |
| public Registration registerGCMonitor(@NotNull final GCMonitor gcMonitor) { |
| gcMonitors.add(checkNotNull(gcMonitor)); |
| return new Registration() { |
| @Override |
| public void unregister() { |
| gcMonitors.remove(gcMonitor); |
| } |
| }; |
| } |
| |
| @Override |
| public void info(String message, Object... arguments) { |
| for (GCMonitor gcMonitor : gcMonitors) { |
| gcMonitor.info(message, arguments); |
| } |
| } |
| |
| @Override |
| public void warn(String message, Object... arguments) { |
| for (GCMonitor gcMonitor : gcMonitors) { |
| gcMonitor.warn(message, arguments); |
| } |
| } |
| |
| @Override |
| public void error(String message, Exception exception) { |
| for (GCMonitor gcMonitor : gcMonitors) { |
| gcMonitor.error(message, exception); |
| } |
| } |
| |
| @Override |
| public void skipped(String reason, Object... arguments) { |
| for (GCMonitor gcMonitor : gcMonitors) { |
| gcMonitor.skipped(reason, arguments); |
| } |
| } |
| |
| @Override |
| public void compacted() { |
| for (GCMonitor gcMonitor : gcMonitors) { |
| gcMonitor.compacted(); |
| } |
| } |
| |
| @Override |
| public void cleaned(long reclaimedSize, long currentSize) { |
| for (GCMonitor gcMonitor : gcMonitors) { |
| gcMonitor.cleaned(reclaimedSize, currentSize); |
| } |
| } |
| |
| @Override |
| public void updateStatus(String status) { |
| for (GCMonitor gcMonitor : gcMonitors) { |
| gcMonitor.updateStatus(status); |
| } |
| } |
| |
| } |