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[BEAM-12370] Support side input in Samza portable runner (#14883)
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.../samza/src/main/java/org/apache/beam/runners/samza/runtime/SamzaStateRequestHandlers.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,69 @@ | ||
| /* | ||
| * 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.samza.runtime; | ||
|
|
||
| import java.io.IOException; | ||
| import java.util.EnumMap; | ||
| import java.util.Map; | ||
| import org.apache.beam.model.fnexecution.v1.BeamFnApi; | ||
| import org.apache.beam.model.pipeline.v1.RunnerApi; | ||
| import org.apache.beam.runners.core.SideInputHandler; | ||
| import org.apache.beam.runners.core.construction.graph.ExecutableStage; | ||
| import org.apache.beam.runners.fnexecution.control.ProcessBundleDescriptors; | ||
| import org.apache.beam.runners.fnexecution.state.StateRequestHandler; | ||
| import org.apache.beam.runners.fnexecution.state.StateRequestHandlers; | ||
| import org.apache.beam.runners.fnexecution.translation.StreamingSideInputHandlerFactory; | ||
| import org.apache.beam.sdk.values.PCollectionView; | ||
| import org.apache.beam.vendor.guava.v26_0_jre.com.google.common.base.Preconditions; | ||
|
|
||
| /** | ||
| * This class creates {@link StateRequestHandler} for side inputs and states of the Samza portable | ||
| * runner. | ||
| */ | ||
| public class SamzaStateRequestHandlers { | ||
|
|
||
| // TODO: [BEAM-12403] support state handlers | ||
| public static StateRequestHandler of( | ||
| ExecutableStage executableStage, | ||
| Map<RunnerApi.ExecutableStagePayload.SideInputId, PCollectionView<?>> sideInputIds, | ||
| SideInputHandler sideInputHandler) { | ||
| final StateRequestHandler sideInputStateHandler; | ||
| if (executableStage.getSideInputs().size() > 0) { | ||
| final StateRequestHandlers.SideInputHandlerFactory sideInputHandlerFactory = | ||
| Preconditions.checkNotNull( | ||
| StreamingSideInputHandlerFactory.forStage( | ||
| executableStage, sideInputIds, sideInputHandler)); | ||
| try { | ||
| sideInputStateHandler = | ||
| StateRequestHandlers.forSideInputHandlerFactory( | ||
| ProcessBundleDescriptors.getSideInputs(executableStage), sideInputHandlerFactory); | ||
| } catch (IOException e) { | ||
| throw new RuntimeException("Failed to initialize SideInputHandler", e); | ||
| } | ||
| } else { | ||
| sideInputStateHandler = StateRequestHandler.unsupported(); | ||
| } | ||
|
|
||
| final EnumMap<BeamFnApi.StateKey.TypeCase, StateRequestHandler> handlerMap = | ||
| new EnumMap<>(BeamFnApi.StateKey.TypeCase.class); | ||
| handlerMap.put(BeamFnApi.StateKey.TypeCase.ITERABLE_SIDE_INPUT, sideInputStateHandler); | ||
| handlerMap.put(BeamFnApi.StateKey.TypeCase.MULTIMAP_SIDE_INPUT, sideInputStateHandler); | ||
| handlerMap.put(BeamFnApi.StateKey.TypeCase.MULTIMAP_KEYS_SIDE_INPUT, sideInputStateHandler); | ||
| return StateRequestHandlers.delegateBasedUponType(handlerMap); | ||
| } | ||
| } |
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