| /* |
| * 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.plugins.document; |
| |
| import java.util.concurrent.TimeUnit; |
| |
| import org.apache.jackrabbit.oak.api.CommitFailedException; |
| import org.apache.jackrabbit.oak.spi.commit.CommitHook; |
| import org.apache.jackrabbit.oak.spi.commit.CommitInfo; |
| import org.apache.jackrabbit.oak.spi.state.NodeState; |
| import org.jetbrains.annotations.NotNull; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import static com.google.common.base.Preconditions.checkNotNull; |
| |
| /** |
| * A commit hook that measures the time it took to process the commit. This |
| * hook only reports timing for successfully processed commits. Those that fail |
| * with a {@link CommitFailedException} are not reported. |
| */ |
| class TimingHook implements CommitHook { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(TimingHook.class); |
| |
| private final CommitHook hook; |
| private final Listener listener; |
| |
| static CommitHook wrap(CommitHook hook, Listener listener) { |
| return new TimingHook(hook, listener); |
| } |
| |
| private TimingHook(@NotNull CommitHook hook, |
| @NotNull Listener listener) { |
| this.hook = checkNotNull(hook); |
| this.listener = checkNotNull(listener); |
| } |
| |
| @Override |
| public @NotNull NodeState processCommit(NodeState before, |
| NodeState after, |
| CommitInfo info) |
| throws CommitFailedException { |
| long start = System.nanoTime(); |
| NodeState state = hook.processCommit(before, after, info); |
| processed(System.nanoTime() - start); |
| return state; |
| } |
| |
| private void processed(long timeNano) { |
| try { |
| listener.processed(timeNano, TimeUnit.NANOSECONDS); |
| } catch (Throwable t) { |
| LOG.warn("Listener failed with exception", t); |
| } |
| } |
| |
| interface Listener { |
| |
| void processed(long time, TimeUnit unit); |
| } |
| } |