/* * 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.core.construction; import java.util.ArrayList; import java.util.List; import java.util.Map; import java.util.Optional; import java.util.function.Function; import java.util.stream.Collectors; import java.util.stream.Stream; import org.apache.beam.model.pipeline.v1.RunnerApi; import org.apache.beam.vendor.guava.v26_0_jre.com.google.common.collect.ImmutableList; import org.apache.beam.vendor.guava.v26_0_jre.com.google.common.collect.ImmutableMap; import org.apache.beam.vendor.guava.v26_0_jre.com.google.common.collect.Lists; /** * A default artifact resolver. This resolver applies {@link ResolutionFn} in the reversed order * they registered i.e. the function registered later overrides the earlier one if they resolve the * same artifact. */ public class DefaultArtifactResolver implements ArtifactResolver { public static final ArtifactResolver INSTANCE = new DefaultArtifactResolver(); private List<ResolutionFn> fns = Lists.newArrayList( (info) -> { if (BeamUrns.getUrn(RunnerApi.StandardArtifacts.Types.FILE).equals(info.getTypeUrn())) { return Optional.of(ImmutableList.of(info)); } else { return Optional.empty(); } }); private Function<RunnerApi.ArtifactInformation, Stream<RunnerApi.ArtifactInformation>> resolver = (info) -> { for (ResolutionFn fn : Lists.reverse(fns)) { Optional<List<RunnerApi.ArtifactInformation>> resolved = fn.resolve(info); if (resolved.isPresent()) { return resolved.get().stream(); } } throw new RuntimeException(String.format("Cannot resolve artifact information: %s", info)); }; @Override public void register(ResolutionFn fn) { fns.add(fn); } @Override public List<RunnerApi.ArtifactInformation> resolveArtifacts( List<RunnerApi.ArtifactInformation> artifacts) { for (ResolutionFn fn : Lists.reverse(fns)) { List<RunnerApi.ArtifactInformation> moreResolved = new ArrayList<>(); for (RunnerApi.ArtifactInformation artifact : artifacts) { Optional<List<RunnerApi.ArtifactInformation>> resolved = fn.resolve(artifact); if (resolved.isPresent()) { moreResolved.addAll(resolved.get()); } else { moreResolved.add(artifact); } } artifacts = moreResolved; } return artifacts; } @Override public RunnerApi.Pipeline resolveArtifacts(RunnerApi.Pipeline pipeline) { ImmutableMap.Builder<String, RunnerApi.Environment> environmentMapBuilder = ImmutableMap.builder(); for (Map.Entry<String, RunnerApi.Environment> entry : pipeline.getComponents().getEnvironmentsMap().entrySet()) { List<RunnerApi.ArtifactInformation> resolvedDependencies = entry .getValue() .getDependenciesList() .parallelStream() .flatMap(resolver) .collect(Collectors.toList()); environmentMapBuilder.put( entry.getKey(), entry .getValue() .toBuilder() .clearDependencies() .addAllDependencies(resolvedDependencies) .build()); } return pipeline .toBuilder() .setComponents( pipeline.getComponents().toBuilder().putAllEnvironments(environmentMapBuilder.build())) .build(); } }