| /* |
| * 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.twill.filesystem; |
| |
| import com.google.common.base.Preconditions; |
| import com.google.common.base.Throwables; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.fs.Path; |
| |
| import java.io.IOException; |
| import java.net.URI; |
| import java.util.Objects; |
| |
| /** |
| * A {@link LocationFactory} that creates HDFS {@link Location} using {@link FileSystem}. |
| * |
| * @deprecated Deprecated since 0.7.0. Use {@link FileContextLocationFactory} instead. |
| */ |
| @Deprecated |
| public final class HDFSLocationFactory implements LocationFactory { |
| |
| private final FileSystem fileSystem; |
| private final String pathBase; |
| |
| public HDFSLocationFactory(Configuration configuration) { |
| this(getFileSystem(configuration)); |
| } |
| |
| public HDFSLocationFactory(Configuration configuration, String pathBase) { |
| this(getFileSystem(configuration), pathBase); |
| } |
| |
| public HDFSLocationFactory(FileSystem fileSystem) { |
| this(fileSystem, "/"); |
| } |
| |
| public HDFSLocationFactory(FileSystem fileSystem, String pathBase) { |
| String base = pathBase.equals("/") ? "" : pathBase; |
| base = base.endsWith("/") ? base.substring(0, base.length() - 1) : base; |
| |
| this.fileSystem = fileSystem; |
| this.pathBase = base; |
| } |
| |
| @Override |
| public Location create(String path) { |
| if (path.startsWith("/")) { |
| path = path.substring(1); |
| } |
| return new HDFSLocation(this, new Path(fileSystem.getUri() + "/" + pathBase + "/" + path)); |
| } |
| |
| @Override |
| public Location create(URI uri) { |
| URI fsURI = fileSystem.getUri(); |
| if (Objects.equals(fsURI.getScheme(), uri.getScheme()) |
| && Objects.equals(fsURI.getAuthority(), uri.getAuthority())) { |
| // It's a full URI |
| return new HDFSLocation(this, new Path(uri)); |
| } |
| |
| if (uri.isAbsolute()) { |
| // Needs to be of the same scheme |
| Preconditions.checkArgument(Objects.equals(fsURI.getScheme(), uri.getScheme()), |
| "Only URI with '%s' scheme is supported", fsURI.getScheme()); |
| return new HDFSLocation(this, new Path(fileSystem.getUri() + uri.getPath())); |
| } |
| |
| return create(uri.getPath()); |
| } |
| |
| @Override |
| public Location getHomeLocation() { |
| return new HDFSLocation(this, fileSystem.getHomeDirectory()); |
| } |
| |
| /** |
| * Returns the underlying {@link FileSystem} object. |
| */ |
| public FileSystem getFileSystem() { |
| return fileSystem; |
| } |
| |
| private static FileSystem getFileSystem(Configuration configuration) { |
| try { |
| return FileSystem.get(configuration); |
| } catch (IOException e) { |
| throw Throwables.propagate(e); |
| } |
| } |
| } |