| /* |
| * 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.beam.runners.dataflow.worker; |
| |
| import com.google.auto.service.AutoService; |
| import java.io.Closeable; |
| import java.io.IOException; |
| import org.apache.beam.runners.core.metrics.ExecutionStateTracker; |
| import org.apache.beam.sdk.metrics.MetricsEnvironment; |
| import org.apache.beam.vendor.guava.v26_0_jre.com.google.common.annotations.VisibleForTesting; |
| |
| /** |
| * Registration of a {@link ContextActivationObserver} for the {@link MetricsEnvironment} with the |
| * {@link DataflowExecutionContext}. |
| */ |
| public class MetricsEnvironmentContextActivationObserverRegistration { |
| |
| /** A {@link ContextActivationObserver} to register default metrics. */ |
| @VisibleForTesting |
| static class MetricsEnvironmentContextActivationObserver implements ContextActivationObserver { |
| @Override |
| public void close() throws IOException {} |
| |
| @Override |
| public Closeable activate(ExecutionStateTracker e) { |
| return MetricsEnvironment.scopedMetricsContainer(new DataflowMetricsContainer(e)); |
| } |
| } |
| |
| /** |
| * A {@link ContextActivationObserver.Registrar} to register {@link ContextActivationObserver} for |
| * {@link MetricsEnvironment}. |
| */ |
| @AutoService(ContextActivationObserver.Registrar.class) |
| public static class MetricsEnvironmentContextActivationObserverRegistrar |
| implements ContextActivationObserver.Registrar { |
| |
| @Override |
| public boolean isEnabled() { |
| return true; |
| } |
| |
| @Override |
| public ContextActivationObserver getContextActivationObserver() { |
| return new MetricsEnvironmentContextActivationObserver(); |
| } |
| } |
| } |