| /* |
| * 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.fnexecution.control; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| import org.apache.beam.model.fnexecution.v1.BeamFnApi.FinalizeBundleRequest; |
| import org.apache.beam.model.fnexecution.v1.BeamFnApi.InstructionRequest; |
| |
| /** Utility methods for creating {@link BundleFinalizationHandler}s. */ |
| public class BundleFinalizationHandlers { |
| |
| /** |
| * A bundle finalizer that stores all bundle finalization requests in memory. After the runner |
| * durably persists the output, the runner is responsible for invoking {@link |
| * InMemoryFinalizer#finalizeAllOutstandingBundles()}. |
| */ |
| public static InMemoryFinalizer inMemoryFinalizer(InstructionRequestHandler fnApiControlClient) { |
| return new InMemoryFinalizer(fnApiControlClient); |
| } |
| |
| /** See {@link #inMemoryFinalizer(InstructionRequestHandler)} for details. */ |
| public static class InMemoryFinalizer implements BundleFinalizationHandler { |
| private final InstructionRequestHandler fnApiControlClient; |
| private final List<String> bundleIds; |
| |
| private InMemoryFinalizer(InstructionRequestHandler fnApiControlClient) { |
| this.fnApiControlClient = fnApiControlClient; |
| this.bundleIds = new ArrayList<>(); |
| } |
| |
| /** All finalization requests will be sent without waiting for the responses. */ |
| public synchronized void finalizeAllOutstandingBundles() { |
| for (String bundleId : bundleIds) { |
| InstructionRequest request = |
| InstructionRequest.newBuilder() |
| .setFinalizeBundle( |
| FinalizeBundleRequest.newBuilder().setInstructionId(bundleId).build()) |
| .build(); |
| fnApiControlClient.handle(request); |
| } |
| bundleIds.clear(); |
| } |
| |
| @Override |
| public synchronized void requestsFinalization(String bundleId) { |
| bundleIds.add(bundleId); |
| } |
| } |
| } |