| /* |
| * 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.guacamole.rest.identifier; |
| |
| import java.util.List; |
| import java.util.Set; |
| import javax.ws.rs.Consumes; |
| import javax.ws.rs.GET; |
| import javax.ws.rs.PATCH; |
| import javax.ws.rs.Produces; |
| import javax.ws.rs.core.MediaType; |
| import org.apache.guacamole.GuacamoleClientException; |
| import org.apache.guacamole.GuacamoleException; |
| import org.apache.guacamole.net.auth.RelatedObjectSet; |
| import org.apache.guacamole.rest.jsonpatch.APIPatch; |
| |
| /** |
| * A REST resource which abstracts the operations available on arbitrary sets |
| * of objects which share some common relation. |
| */ |
| @Produces(MediaType.APPLICATION_JSON) |
| @Consumes(MediaType.APPLICATION_JSON) |
| public class RelatedObjectSetResource { |
| |
| /** |
| * The path of any operation within a JSON patch which adds/removes an |
| * object from the associated set. |
| */ |
| private static final String OBJECT_PATH = "/"; |
| |
| /** |
| * The set of objects represented by this RelatedObjectSetResource. |
| */ |
| private final RelatedObjectSet objects; |
| |
| /** |
| * Creates a new RelatedObjectSetResource which exposes the operations and |
| * subresources available for the given RelatedObjectSet. |
| * |
| * @param objects |
| * The RelatedObjectSet exposed by this RelatedObjectSetResource. |
| */ |
| public RelatedObjectSetResource(RelatedObjectSet objects) { |
| this.objects = objects; |
| } |
| |
| /** |
| * Returns the identifiers of all objects within RelatedObjectSet exposed by |
| * this RelatedObjectSetResource. |
| * |
| * @return |
| * The identifiers of all objects within RelatedObjectSet exposed by |
| * this RelatedObjectSetResource. |
| * |
| * @throws GuacamoleException |
| * If an error occurs while retrieving the objects within the set, or |
| * if objects cannot be retrieved due to lack of permissions to do so. |
| */ |
| @GET |
| public Set<String> getObjects() throws GuacamoleException { |
| return objects.getObjects(); |
| } |
| |
| /** |
| * Updates the given RelatedObjectSetPatch by queuing an add or remove |
| * operation for the object having the given identifier based on the given |
| * patch operation. |
| * |
| * @param operation |
| * The patch operation to perform. |
| * |
| * @param relatedObjectSetPatch |
| * The RelatedObjectSetPatch being modified. |
| * |
| * @param identifier |
| * The identifier of the object being added or removed from the set. |
| * |
| * @throws GuacamoleException |
| * If the requested patch operation is not supported. |
| */ |
| private void updateRelatedObjectSet(APIPatch.Operation operation, |
| RelatedObjectSetPatch relatedObjectSetPatch, String identifier) |
| throws GuacamoleException { |
| |
| // Add or remove object based on operation |
| switch (operation) { |
| |
| // Add object |
| case add: |
| relatedObjectSetPatch.addObject(identifier); |
| break; |
| |
| // Remove object |
| case remove: |
| relatedObjectSetPatch.removeObject(identifier); |
| break; |
| |
| // Unsupported patch operation |
| default: |
| throw new GuacamoleClientException("Unsupported patch operation: \"" + operation + "\""); |
| |
| } |
| |
| } |
| |
| /** |
| * Applies a given list of patches to the RelatedObjectSet exposed by this |
| * RelatedObjectSetResource. Each patch specifies either |
| * an "add" or a "remove" operation for a particular object represented |
| * by its identifier. The path of each operation MUST be "/", with the |
| * identifier of the object being provided within the value of the patch. |
| * |
| * @param patches |
| * The patches to apply for this request. |
| * |
| * @throws GuacamoleException |
| * If an error is encountered while modifying the contents of the |
| * RelatedObjectSet. |
| */ |
| @PATCH |
| public void patchObjects(List<APIPatch<String>> patches) |
| throws GuacamoleException { |
| |
| // Apply all patch operations individually |
| RelatedObjectSetPatch objectPatch = new RelatedObjectSetPatch(); |
| for (APIPatch<String> patch : patches) { |
| |
| String path = patch.getPath(); |
| |
| // Add/remove objects from set |
| if (path.equals(OBJECT_PATH)) { |
| String identifier = patch.getValue(); |
| updateRelatedObjectSet(patch.getOp(), objectPatch, identifier); |
| } |
| |
| // Otherwise, the path is not supported |
| else |
| throw new GuacamoleClientException("Unsupported patch path: \"" + path + "\""); |
| |
| } // end for each patch operation |
| |
| // Save changes |
| objectPatch.apply(objects); |
| |
| } |
| |
| } |