| /** |
| * 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.ambari.server.api.services; |
| |
| import javax.ws.rs.DELETE; |
| import javax.ws.rs.GET; |
| import javax.ws.rs.POST; |
| import javax.ws.rs.PUT; |
| import javax.ws.rs.Path; |
| import javax.ws.rs.PathParam; |
| import javax.ws.rs.Produces; |
| import javax.ws.rs.core.Context; |
| import javax.ws.rs.core.HttpHeaders; |
| import javax.ws.rs.core.Response; |
| import javax.ws.rs.core.UriInfo; |
| |
| import org.apache.ambari.server.api.resources.ResourceInstance; |
| import org.apache.ambari.server.controller.spi.Resource; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| /** |
| * Service responsible for instances resource requests. |
| */ |
| @Path("/instances/") |
| public class InstanceService extends BaseService { |
| |
| /** |
| * Parent feed id. |
| */ |
| private String m_feedName; |
| |
| /** |
| * Constructor. |
| */ |
| public InstanceService() { |
| } |
| |
| /** |
| * Constructor. |
| * |
| * @param feedName feed id |
| */ |
| public InstanceService(String feedName) { |
| m_feedName = feedName; |
| } |
| |
| /** |
| * Handles GET /feeds/{feedID}/instances/{instanceID} and /instances/{instanceID} |
| * Get a specific instance. |
| * |
| * @param headers http headers |
| * @param ui uri info |
| * @param instanceID instance id |
| * |
| * @return instance resource representation |
| */ |
| @GET |
| @Path("{instanceID}") |
| @Produces("text/plain") |
| public Response getInstance(@Context HttpHeaders headers, @Context UriInfo ui, |
| @PathParam("instanceID") String instanceID) { |
| |
| return handleRequest(headers, null, ui, Request.Type.GET, |
| createInstanceResource(m_feedName, instanceID, ui)); |
| } |
| |
| /** |
| * Handles GET /feeds/{feedID}/instances and /instances |
| * Get all instances for a feed. |
| * |
| * @param headers http headers |
| * @param ui uri info |
| * @return instance collection resource representation |
| */ |
| @GET |
| @Produces("text/plain") |
| public Response getInstances(@Context HttpHeaders headers, @Context UriInfo ui) { |
| return handleRequest(headers, null, ui, Request.Type.GET, |
| createInstanceResource(m_feedName, null, ui)); |
| } |
| |
| /** |
| * Handles POST /feeds/{feedID}/instances/{instanceID} |
| * Create a specific instance. |
| * |
| * @param body http body |
| * @param headers http headers |
| * @param ui uri info |
| * @param instanceID instance id |
| * |
| * @return instance resource representation |
| */ |
| @POST |
| @Path("{instanceID}") |
| @Produces("text/plain") |
| public Response createInstance(String body, @Context HttpHeaders headers, @Context UriInfo ui, |
| @PathParam("instanceID") String instanceID) { |
| |
| return handleRequest(headers, body, ui, Request.Type.POST, |
| createInstanceResource(m_feedName, instanceID, ui)); |
| } |
| |
| /** |
| * Handles PUT /feeds/{feedID}/instances/{instanceID} |
| * Updates a specific instance. |
| * |
| * @param body http body |
| * @param headers http headers |
| * @param ui uri info |
| * @param instanceID instance id |
| * |
| * @return information regarding updated instance |
| */ |
| @PUT |
| @Path("{instanceID}") |
| @Produces("text/plain") |
| public Response updateInstance(String body, @Context HttpHeaders headers, @Context UriInfo ui, |
| @PathParam("instanceID") String instanceID) { |
| |
| return handleRequest(headers, body, ui, Request.Type.PUT, |
| createInstanceResource(m_feedName, instanceID, ui)); |
| } |
| |
| /** |
| * Handles DELETE /feeds/{feedID}/instances/{instanceID} |
| * Deletes a specific instance. |
| * |
| * @param headers http headers |
| * @param ui uri info |
| * @param instanceID instance id |
| * |
| * @return instance resource representation |
| */ |
| @DELETE |
| @Path("{instanceID}") |
| @Produces("text/plain") |
| public Response deleteInstance(@Context HttpHeaders headers, @Context UriInfo ui, |
| @PathParam("instanceID") String instanceID) { |
| |
| return handleRequest(headers, null, ui, Request.Type.DELETE, |
| createInstanceResource(m_feedName, instanceID, ui)); |
| } |
| |
| /** |
| * Create a service resource instance. |
| * |
| * |
| * |
| * @param feedName feed |
| * @param instanceID instance name |
| * @param ui uri information |
| * |
| * @return a instance resource instance |
| */ |
| ResourceInstance createInstanceResource(String feedName, String instanceID, UriInfo ui) { |
| boolean isAttached = ui.getRequestUri().toString().contains("/feeds/"); |
| |
| Map<Resource.Type,String> mapIds = new HashMap<Resource.Type, String>(); |
| mapIds.put(Resource.Type.DRInstance, instanceID); |
| if (isAttached) { |
| mapIds.put(Resource.Type.DRFeed, feedName); |
| } |
| |
| return createResource(Resource.Type.DRInstance, mapIds); |
| } |
| } |