| /* |
| * 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.artifact; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.nio.channels.Channels; |
| import java.util.concurrent.TimeUnit; |
| import org.apache.beam.model.jobmanagement.v1.ArtifactApi; |
| import org.apache.beam.model.jobmanagement.v1.ArtifactApi.ProxyManifest; |
| import org.apache.beam.sdk.io.FileSystems; |
| import org.apache.beam.sdk.io.fs.ResourceId; |
| import org.apache.beam.vendor.guava.v26_0_jre.com.google.common.annotations.VisibleForTesting; |
| import org.apache.beam.vendor.guava.v26_0_jre.com.google.common.cache.Cache; |
| import org.apache.beam.vendor.guava.v26_0_jre.com.google.common.cache.CacheBuilder; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * An {@link ArtifactRetrievalService} that uses {@link FileSystems} as its backing storage and uses |
| * the artifact layout and retrieval token format produced by {@link |
| * BeamFileSystemArtifactStagingService}. |
| */ |
| public class BeamFileSystemArtifactRetrievalService extends AbstractArtifactRetrievalService { |
| private static final Logger LOG = |
| LoggerFactory.getLogger(BeamFileSystemArtifactRetrievalService.class); |
| |
| private static final Cache<String, ArtifactApi.ProxyManifest> MANIFEST_CACHE = |
| CacheBuilder.newBuilder() |
| .expireAfterAccess(1, TimeUnit.HOURS /* arbitrary */) |
| .maximumSize(100 /* arbitrary */) |
| .build(); |
| |
| public BeamFileSystemArtifactRetrievalService() { |
| super(MANIFEST_CACHE); |
| } |
| |
| public static BeamFileSystemArtifactRetrievalService create() { |
| return new BeamFileSystemArtifactRetrievalService(); |
| } |
| |
| @Override |
| public InputStream openUri(String retrievalToken, String uri) throws IOException { |
| ResourceId artifactResourceId = FileSystems.matchNewResource(uri, false /* is directory */); |
| return Channels.newInputStream(FileSystems.open(artifactResourceId)); |
| } |
| |
| @Override |
| public InputStream openManifest(String retrievalToken) throws IOException { |
| ResourceId manifestResourceId = getManifestLocationFromToken(retrievalToken); |
| try { |
| return Channels.newInputStream(FileSystems.open(manifestResourceId)); |
| } catch (IOException e) { |
| LOG.warn( |
| "GetManifest for {} failed. Make sure the artifact staging directory (configurable " |
| + "via --artifacts-dir argument to the job server) is accessible to workers.", |
| retrievalToken, |
| e); |
| throw e; |
| } |
| } |
| |
| @VisibleForTesting |
| static ProxyManifest loadManifest(String retrievalToken) throws IOException { |
| LOG.info("Loading manifest for retrieval token {}", retrievalToken); |
| // look for manifest file at $retrieval_token |
| ResourceId manifestResourceId = getManifestLocationFromToken(retrievalToken); |
| return loadManifest(manifestResourceId); |
| } |
| |
| static ProxyManifest loadManifest(ResourceId manifestResourceId) throws IOException { |
| return loadManifest( |
| Channels.newInputStream(FileSystems.open(manifestResourceId)), |
| manifestResourceId.toString()); |
| } |
| |
| private static ResourceId getManifestLocationFromToken(String retrievalToken) { |
| return FileSystems.matchNewResource(retrievalToken, false /* is directory */); |
| } |
| } |