| /* |
| * 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.hadoop.hbase.snapshot; |
| |
| import java.io.IOException; |
| import java.io.InterruptedIOException; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.concurrent.Callable; |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.Executor; |
| import java.util.concurrent.ExecutorCompletionService; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.FSDataInputStream; |
| import org.apache.hadoop.fs.FSDataOutputStream; |
| import org.apache.hadoop.fs.FileStatus; |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.fs.PathFilter; |
| import org.apache.hadoop.hbase.client.RegionInfo; |
| import org.apache.hadoop.hbase.regionserver.StoreFileInfo; |
| import org.apache.hadoop.hbase.util.CommonFSUtils; |
| import org.apache.yetus.audience.InterfaceAudience; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import org.apache.hbase.thirdparty.com.google.protobuf.CodedInputStream; |
| import org.apache.hbase.thirdparty.com.google.protobuf.InvalidProtocolBufferException; |
| import org.apache.hbase.thirdparty.com.google.protobuf.UnsafeByteOperations; |
| |
| import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil; |
| import org.apache.hadoop.hbase.shaded.protobuf.generated.SnapshotProtos.SnapshotDescription; |
| import org.apache.hadoop.hbase.shaded.protobuf.generated.SnapshotProtos.SnapshotRegionManifest; |
| |
| /** |
| * DO NOT USE DIRECTLY. USE {@link SnapshotManifest}. Snapshot v2 layout format - Single Manifest |
| * file containing all the information of regions - In the online-snapshot case each region will |
| * write a "region manifest" /snapshotName/manifest.regionName |
| */ |
| @InterfaceAudience.Private |
| public final class SnapshotManifestV2 { |
| private static final Logger LOG = LoggerFactory.getLogger(SnapshotManifestV2.class); |
| |
| public static final int DESCRIPTOR_VERSION = 2; |
| |
| public static final String SNAPSHOT_MANIFEST_PREFIX = "region-manifest."; |
| |
| private SnapshotManifestV2() { |
| } |
| |
| static class ManifestBuilder implements SnapshotManifest.RegionVisitor< |
| SnapshotRegionManifest.Builder, SnapshotRegionManifest.FamilyFiles.Builder> { |
| private final Configuration conf; |
| private final Path snapshotDir; |
| private final FileSystem rootFs; |
| |
| public ManifestBuilder(final Configuration conf, final FileSystem rootFs, |
| final Path snapshotDir) { |
| this.snapshotDir = snapshotDir; |
| this.conf = conf; |
| this.rootFs = rootFs; |
| } |
| |
| @Override |
| public SnapshotRegionManifest.Builder regionOpen(final RegionInfo regionInfo) { |
| SnapshotRegionManifest.Builder manifest = SnapshotRegionManifest.newBuilder(); |
| manifest.setRegionInfo(ProtobufUtil.toRegionInfo(regionInfo)); |
| return manifest; |
| } |
| |
| @Override |
| public void regionClose(final SnapshotRegionManifest.Builder region) throws IOException { |
| // we should ensure the snapshot dir exist, maybe it has been deleted by master |
| // see HBASE-16464 |
| FileSystem workingDirFs = snapshotDir.getFileSystem(this.conf); |
| if (workingDirFs.exists(snapshotDir)) { |
| SnapshotRegionManifest manifest = region.build(); |
| try (FSDataOutputStream stream = |
| workingDirFs.create(getRegionManifestPath(snapshotDir, manifest))) { |
| manifest.writeTo(stream); |
| } |
| } else { |
| LOG.warn("can't write manifest without parent dir, maybe it has been deleted by master?"); |
| } |
| } |
| |
| @Override |
| public SnapshotRegionManifest.FamilyFiles.Builder |
| familyOpen(final SnapshotRegionManifest.Builder region, final byte[] familyName) { |
| SnapshotRegionManifest.FamilyFiles.Builder family = |
| SnapshotRegionManifest.FamilyFiles.newBuilder(); |
| family.setFamilyName(UnsafeByteOperations.unsafeWrap(familyName)); |
| return family; |
| } |
| |
| @Override |
| public void familyClose(final SnapshotRegionManifest.Builder region, |
| final SnapshotRegionManifest.FamilyFiles.Builder family) { |
| region.addFamilyFiles(family.build()); |
| } |
| |
| @Override |
| public void storeFile(final SnapshotRegionManifest.Builder region, |
| final SnapshotRegionManifest.FamilyFiles.Builder family, final StoreFileInfo storeFile) |
| throws IOException { |
| SnapshotRegionManifest.StoreFile.Builder sfManifest = |
| SnapshotRegionManifest.StoreFile.newBuilder(); |
| sfManifest.setName(storeFile.getPath().getName()); |
| if (storeFile.isReference()) { |
| sfManifest.setReference(storeFile.getReference().convert()); |
| } |
| if (!storeFile.isReference() && !storeFile.isLink()) { |
| sfManifest.setFileSize(storeFile.getSize()); |
| } else { |
| sfManifest.setFileSize(storeFile.getReferencedFileStatus(rootFs).getLen()); |
| } |
| family.addStoreFiles(sfManifest.build()); |
| } |
| } |
| |
| static List<SnapshotRegionManifest> loadRegionManifests(final Configuration conf, |
| final Executor executor, final FileSystem fs, final Path snapshotDir, |
| final SnapshotDescription desc, final int manifestSizeLimit) throws IOException { |
| FileStatus[] manifestFiles = CommonFSUtils.listStatus(fs, snapshotDir, new PathFilter() { |
| @Override |
| public boolean accept(Path path) { |
| return path.getName().startsWith(SNAPSHOT_MANIFEST_PREFIX); |
| } |
| }); |
| |
| if (manifestFiles == null || manifestFiles.length == 0) return null; |
| |
| final ExecutorCompletionService<SnapshotRegionManifest> completionService = |
| new ExecutorCompletionService<>(executor); |
| for (final FileStatus st : manifestFiles) { |
| completionService.submit(new Callable<SnapshotRegionManifest>() { |
| @Override |
| public SnapshotRegionManifest call() throws IOException { |
| try (FSDataInputStream stream = fs.open(st.getPath())) { |
| CodedInputStream cin = CodedInputStream.newInstance(stream); |
| cin.setSizeLimit(manifestSizeLimit); |
| return SnapshotRegionManifest.parseFrom(cin); |
| } |
| } |
| }); |
| } |
| |
| ArrayList<SnapshotRegionManifest> regionsManifest = new ArrayList<>(manifestFiles.length); |
| try { |
| for (int i = 0; i < manifestFiles.length; ++i) { |
| regionsManifest.add(completionService.take().get()); |
| } |
| } catch (InterruptedException e) { |
| throw new InterruptedIOException(e.getMessage()); |
| } catch (ExecutionException e) { |
| Throwable t = e.getCause(); |
| |
| if (t instanceof InvalidProtocolBufferException) { |
| throw (InvalidProtocolBufferException) t; |
| } else { |
| throw new IOException("ExecutionException", e.getCause()); |
| } |
| } |
| return regionsManifest; |
| } |
| |
| static void deleteRegionManifest(final FileSystem fs, final Path snapshotDir, |
| final SnapshotRegionManifest manifest) throws IOException { |
| fs.delete(getRegionManifestPath(snapshotDir, manifest), true); |
| } |
| |
| private static Path getRegionManifestPath(final Path snapshotDir, |
| final SnapshotRegionManifest manifest) { |
| String regionName = SnapshotManifest.getRegionNameFromManifest(manifest); |
| return new Path(snapshotDir, SNAPSHOT_MANIFEST_PREFIX + regionName); |
| } |
| } |