| /* |
| * 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.extensions.gcp.storage; |
| |
| import static org.apache.beam.vendor.guava.v26_0_jre.com.google.common.base.Preconditions.checkArgument; |
| import static org.apache.beam.vendor.guava.v26_0_jre.com.google.common.base.Preconditions.checkNotNull; |
| import static org.apache.beam.vendor.guava.v26_0_jre.com.google.common.base.Preconditions.checkState; |
| |
| import javax.annotation.Nullable; |
| import org.apache.beam.sdk.extensions.gcp.util.gcsfs.GcsPath; |
| 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; |
| |
| /** {@link ResourceId} implementation for Google Cloud Storage. */ |
| public class GcsResourceId implements ResourceId { |
| |
| private final GcsPath gcsPath; |
| |
| static GcsResourceId fromGcsPath(GcsPath gcsPath) { |
| checkNotNull(gcsPath, "gcsPath"); |
| return new GcsResourceId(gcsPath); |
| } |
| |
| private GcsResourceId(GcsPath gcsPath) { |
| this.gcsPath = gcsPath; |
| } |
| |
| @Override |
| public GcsResourceId resolve(String other, ResolveOptions resolveOptions) { |
| checkState( |
| isDirectory(), |
| String.format("Expected the gcsPath is a directory, but had [%s].", gcsPath)); |
| checkArgument( |
| resolveOptions.equals(StandardResolveOptions.RESOLVE_FILE) |
| || resolveOptions.equals(StandardResolveOptions.RESOLVE_DIRECTORY), |
| String.format("ResolveOptions: [%s] is not supported.", resolveOptions)); |
| if (resolveOptions.equals(StandardResolveOptions.RESOLVE_FILE)) { |
| checkArgument( |
| !other.endsWith("/"), "The resolved file: [%s] should not end with '/'.", other); |
| return fromGcsPath(gcsPath.resolve(other)); |
| } else { |
| // StandardResolveOptions.RESOLVE_DIRECTORY |
| if (other.endsWith("/")) { |
| // other already contains the delimiter for gcs. |
| // It is not recommended for callers to set the delimiter. |
| // However, we consider it as a valid input. |
| return fromGcsPath(gcsPath.resolve(other)); |
| } else { |
| return fromGcsPath(gcsPath.resolve(other + "/")); |
| } |
| } |
| } |
| |
| @Override |
| public GcsResourceId getCurrentDirectory() { |
| if (isDirectory()) { |
| return this; |
| } else { |
| GcsPath parent = gcsPath.getParent(); |
| checkState( |
| parent != null, |
| String.format("Failed to get the current directory for path: [%s].", gcsPath)); |
| return fromGcsPath(parent); |
| } |
| } |
| |
| @Override |
| public boolean isDirectory() { |
| return gcsPath.endsWith("/"); |
| } |
| |
| @Override |
| public String getScheme() { |
| return "gs"; |
| } |
| |
| @Override |
| @Nullable |
| public String getFilename() { |
| if (gcsPath.getNameCount() <= 1) { |
| return null; |
| } else { |
| GcsPath gcsFilename = gcsPath.getFileName(); |
| return gcsFilename == null ? null : gcsFilename.toString(); |
| } |
| } |
| |
| GcsPath getGcsPath() { |
| return gcsPath; |
| } |
| |
| @Override |
| public String toString() { |
| return gcsPath.toString(); |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (!(obj instanceof GcsResourceId)) { |
| return false; |
| } |
| GcsResourceId other = (GcsResourceId) obj; |
| return this.gcsPath.equals(other.gcsPath); |
| } |
| |
| @Override |
| public int hashCode() { |
| return gcsPath.hashCode(); |
| } |
| } |