| /* |
| * 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.sdk.io.hdfs; |
| |
| import static org.apache.beam.vendor.guava.v20_0.com.google.common.base.Preconditions.checkArgument; |
| import static org.apache.beam.vendor.guava.v20_0.com.google.common.base.Preconditions.checkState; |
| |
| import java.net.URI; |
| import java.util.Objects; |
| import org.apache.beam.sdk.io.fs.ResolveOptions; |
| import org.apache.beam.sdk.io.fs.ResolveOptions.StandardResolveOptions; |
| import org.apache.beam.sdk.io.fs.ResourceId; |
| import org.apache.hadoop.fs.Path; |
| |
| /** {@link ResourceId} implementation for the {@link HadoopFileSystem}. */ |
| class HadoopResourceId implements ResourceId { |
| private final URI uri; |
| |
| HadoopResourceId(URI uri) { |
| this.uri = uri; |
| } |
| |
| @Override |
| public ResourceId resolve(String other, ResolveOptions resolveOptions) { |
| checkState( |
| isDirectory(), String.format("Expected this resource is a directory, but had [%s].", uri)); |
| if (resolveOptions == StandardResolveOptions.RESOLVE_DIRECTORY) { |
| if (!other.endsWith("/")) { |
| other += "/"; |
| } |
| return new HadoopResourceId(uri.resolve(other)); |
| } else if (resolveOptions == StandardResolveOptions.RESOLVE_FILE) { |
| checkArgument(!other.endsWith("/"), "Resolving a file with a directory path: %s", other); |
| return new HadoopResourceId(uri.resolve(other)); |
| } else { |
| throw new UnsupportedOperationException( |
| String.format("Unexpected StandardResolveOptions %s", resolveOptions)); |
| } |
| } |
| |
| @Override |
| public ResourceId getCurrentDirectory() { |
| return new HadoopResourceId(uri.getPath().endsWith("/") ? uri : uri.resolve(".")); |
| } |
| |
| @Override |
| public boolean isDirectory() { |
| return uri.getPath().endsWith("/"); |
| } |
| |
| @Override |
| public String getFilename() { |
| return new Path(uri).getName(); |
| } |
| |
| @Override |
| public String getScheme() { |
| return uri.getScheme(); |
| } |
| |
| @Override |
| public String toString() { |
| return uri.toString(); |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (!(obj instanceof HadoopResourceId)) { |
| return false; |
| } |
| return Objects.equals(uri, ((HadoopResourceId) obj).uri); |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hashCode(uri); |
| } |
| |
| Path toPath() { |
| return new Path(uri); |
| } |
| } |