| /** |
| * 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 com.google.protobuf.InvalidProtocolBufferException; |
| 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.Executor; |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.ExecutorCompletionService; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.hadoop.hbase.classification.InterfaceAudience; |
| 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.HRegionInfo; |
| import org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.SnapshotDescription; |
| import org.apache.hadoop.hbase.protobuf.generated.SnapshotProtos.SnapshotRegionManifest; |
| import org.apache.hadoop.hbase.regionserver.StoreFileInfo; |
| import org.apache.hadoop.hbase.util.ByteStringer; |
| import org.apache.hadoop.hbase.util.FSUtils; |
| |
| /** |
| * 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 Log LOG = LogFactory.getLog(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 fs; |
| |
| public ManifestBuilder(final Configuration conf, final FileSystem fs, final Path snapshotDir) { |
| this.snapshotDir = snapshotDir; |
| this.conf = conf; |
| this.fs = fs; |
| } |
| |
| public SnapshotRegionManifest.Builder regionOpen(final HRegionInfo regionInfo) { |
| SnapshotRegionManifest.Builder manifest = SnapshotRegionManifest.newBuilder(); |
| manifest.setRegionInfo(HRegionInfo.convert(regionInfo)); |
| return manifest; |
| } |
| |
| public void regionClose(final SnapshotRegionManifest.Builder region) throws IOException { |
| SnapshotRegionManifest manifest = region.build(); |
| FSDataOutputStream stream = fs.create(getRegionManifestPath(snapshotDir, manifest)); |
| try { |
| manifest.writeTo(stream); |
| } finally { |
| stream.close(); |
| } |
| } |
| |
| public SnapshotRegionManifest.FamilyFiles.Builder familyOpen( |
| final SnapshotRegionManifest.Builder region, final byte[] familyName) { |
| SnapshotRegionManifest.FamilyFiles.Builder family = |
| SnapshotRegionManifest.FamilyFiles.newBuilder(); |
| family.setFamilyName(ByteStringer.wrap(familyName)); |
| return family; |
| } |
| |
| public void familyClose(final SnapshotRegionManifest.Builder region, |
| final SnapshotRegionManifest.FamilyFiles.Builder family) { |
| region.addFamilyFiles(family.build()); |
| } |
| |
| 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()); |
| } |
| sfManifest.setFileSize(storeFile.getReferencedFileStatus(fs).getLen()); |
| family.addStoreFiles(sfManifest.build()); |
| } |
| } |
| |
| static List<SnapshotRegionManifest> loadRegionManifests(final Configuration conf, |
| final Executor executor,final FileSystem fs, final Path snapshotDir, |
| final SnapshotDescription desc) throws IOException { |
| FileStatus[] manifestFiles = FSUtils.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<SnapshotRegionManifest>(executor); |
| for (final FileStatus st: manifestFiles) { |
| completionService.submit(new Callable<SnapshotRegionManifest>() { |
| @Override |
| public SnapshotRegionManifest call() throws IOException { |
| FSDataInputStream stream = fs.open(st.getPath()); |
| try { |
| return SnapshotRegionManifest.parseFrom(stream); |
| } finally { |
| stream.close(); |
| } |
| } |
| }); |
| } |
| |
| ArrayList<SnapshotRegionManifest> regionsManifest = |
| new ArrayList<SnapshotRegionManifest>(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 { |
| IOException ex = new IOException("ExecutionException"); |
| ex.initCause(e.getCause()); |
| throw ex; |
| } |
| } |
| 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); |
| } |
| } |