| /* |
| * 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.reef.runtime.common.launch; |
| |
| import org.apache.reef.runtime.common.launch.parameters.LaunchID; |
| import org.apache.reef.tang.annotations.Parameter; |
| import org.apache.reef.wake.EventHandler; |
| import org.apache.reef.wake.profiler.WakeProfiler; |
| import org.apache.reef.wake.time.event.StopTime; |
| |
| import javax.inject.Inject; |
| import java.io.FileNotFoundException; |
| import java.io.PrintWriter; |
| import java.io.UnsupportedEncodingException; |
| import java.util.logging.Level; |
| import java.util.logging.Logger; |
| |
| /** |
| * An EventHandler that writes out the profiler results. |
| */ |
| public final class ProfilingStopHandler implements EventHandler<StopTime> { |
| private static final Logger LOG = Logger.getLogger(ProfilingStopHandler.class.getName()); |
| private static WakeProfiler profiler; |
| private final String launchID; |
| |
| @Inject |
| public ProfilingStopHandler(@Parameter(LaunchID.class) final String launchID) { |
| this.launchID = launchID; |
| } |
| |
| public static void setProfiler(final WakeProfiler profiler) { |
| ProfilingStopHandler.profiler = profiler; |
| } |
| |
| @Override |
| public void onNext(final StopTime stopTime) { |
| try (PrintWriter out = new PrintWriter("profile-" + launchID + ".json", "UTF-8")) { |
| out.print(profiler.objectGraphToString()); |
| } catch (final FileNotFoundException | UnsupportedEncodingException e) { |
| LOG.log(Level.WARNING, "Unable to write the profile", e); |
| } |
| } |
| } |