| /** |
| * 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.fs.swift.util; |
| |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.fs.swift.exceptions.SwiftConfigurationException; |
| import org.apache.hadoop.fs.swift.http.RestClientBindings; |
| |
| import java.net.URI; |
| import java.util.regex.Pattern; |
| |
| /** |
| * Swift hierarchy mapping of (container, path) |
| */ |
| public final class SwiftObjectPath { |
| private static final Pattern PATH_PART_PATTERN = Pattern.compile(".*/AUTH_\\w*/"); |
| |
| /** |
| * Swift container |
| */ |
| private final String container; |
| |
| /** |
| * swift object |
| */ |
| private final String object; |
| |
| private final String uriPath; |
| |
| /** |
| * Build an instance from a (host, object) pair |
| * |
| * @param container container name |
| * @param object object ref underneath the container |
| */ |
| public SwiftObjectPath(String container, String object) { |
| |
| if (object == null) { |
| throw new IllegalArgumentException("object name can't be null"); |
| } |
| |
| this.container = container; |
| this.object = URI.create(object).getPath(); |
| uriPath = buildUriPath(); |
| } |
| |
| public String getContainer() { |
| return container; |
| } |
| |
| public String getObject() { |
| return object; |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (this == o) return true; |
| if (!(o instanceof SwiftObjectPath)) return false; |
| final SwiftObjectPath that = (SwiftObjectPath) o; |
| return this.toUriPath().equals(that.toUriPath()); |
| } |
| |
| @Override |
| public int hashCode() { |
| int result = container.hashCode(); |
| result = 31 * result + object.hashCode(); |
| return result; |
| } |
| |
| private String buildUriPath() { |
| return SwiftUtils.joinPaths(container, object); |
| } |
| |
| public String toUriPath() { |
| return uriPath; |
| } |
| |
| @Override |
| public String toString() { |
| return toUriPath(); |
| } |
| |
| /** |
| * Test for the object matching a path, ignoring the container |
| * value. |
| * |
| * @param path path string |
| * @return true iff the object's name matches the path |
| */ |
| public boolean objectMatches(String path) { |
| return object.equals(path); |
| } |
| |
| |
| /** |
| * Query to see if the possibleChild object is a child path of this. |
| * object. |
| * |
| * The test is done by probing for the path of the this object being |
| * at the start of the second -with a trailing slash, and both |
| * containers being equal |
| * |
| * @param possibleChild possible child dir |
| * @return true iff the possibleChild is under this object |
| */ |
| public boolean isEqualToOrParentOf(SwiftObjectPath possibleChild) { |
| String origPath = toUriPath(); |
| String path = origPath; |
| if (!path.endsWith("/")) { |
| path = path + "/"; |
| } |
| String childPath = possibleChild.toUriPath(); |
| return childPath.equals(origPath) || childPath.startsWith(path); |
| } |
| |
| /** |
| * Create a path tuple of (container, path), where the container is |
| * chosen from the host of the URI. |
| * |
| * @param uri uri to start from |
| * @param path path underneath |
| * @return a new instance. |
| * @throws SwiftConfigurationException if the URI host doesn't parse into |
| * container.service |
| */ |
| public static SwiftObjectPath fromPath(URI uri, |
| Path path) |
| throws SwiftConfigurationException { |
| return fromPath(uri, path, false); |
| } |
| |
| /** |
| * Create a path tuple of (container, path), where the container is |
| * chosen from the host of the URI. |
| * A trailing slash can be added to the path. This is the point where |
| * these /-es need to be appended, because when you construct a {@link Path} |
| * instance, {@link Path#normalizePath(String, String)} is called |
| * -which strips off any trailing slash. |
| * |
| * @param uri uri to start from |
| * @param path path underneath |
| * @param addTrailingSlash should a trailing slash be added if there isn't one. |
| * @return a new instance. |
| * @throws SwiftConfigurationException if the URI host doesn't parse into |
| * container.service |
| */ |
| public static SwiftObjectPath fromPath(URI uri, |
| Path path, |
| boolean addTrailingSlash) |
| throws SwiftConfigurationException { |
| |
| String url = |
| path.toUri().getPath().replaceAll(PATH_PART_PATTERN.pattern(), ""); |
| //add a trailing slash if needed |
| if (addTrailingSlash && !url.endsWith("/")) { |
| url += "/"; |
| } |
| |
| String container = uri.getHost(); |
| if (container == null) { |
| //no container, not good: replace with "" |
| container = ""; |
| } else if (container.contains(".")) { |
| //its a container.service URI. Strip the container |
| container = RestClientBindings.extractContainerName(container); |
| } |
| return new SwiftObjectPath(container, url); |
| } |
| |
| |
| } |