/**
* 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 java.util.Collections;
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;
/**
* Service responsible for view resource requests.
*/
@Path("/views/")
public class ViewService extends BaseService {
/**
* Handles: GET /views/{viewID}
* Get a specific view.
*
* @param headers http headers
* @param ui uri info
* @param viewName view id
*
* @return view instance representation
*/
@GET
@Path("{viewName}")
@Produces("text/plain")
public Response getView(String body, @Context HttpHeaders headers, @Context UriInfo ui,
@PathParam("viewName") String viewName) {
return handleRequest(headers, body, ui, Request.Type.GET, createViewResource(viewName));
}
/**
* Handles: GET /views
* Get all views.
*
* @param headers http headers
* @param ui uri info
*
* @return view collection resource representation
*/
@GET
@Produces("text/plain")
public Response getViews(String body, @Context HttpHeaders headers, @Context UriInfo ui) {
return handleRequest(headers, body, ui, Request.Type.GET, createViewResource(null));
}
/**
* Handles: POST /views/{viewID}
* Create a specific view.
*
* @param headers http headers
* @param ui uri info
* @param viewName view id
*
* @return information regarding the created view
*/
@POST
@Path("{viewName}")
@Produces("text/plain")
public Response createView(String body, @Context HttpHeaders headers, @Context UriInfo ui,
@PathParam("viewName") String viewName) {
return handleRequest(headers, body, ui, Request.Type.POST, createViewResource(viewName));
}
/**
* Handles: PUT /views/{viewID}
* Update a specific view.
*
* @param headers http headers
* @param ui uri info
* @param viewName view id
*
* @return information regarding the updated view
*/
@PUT
@Path("{viewName}")
@Produces("text/plain")
public Response updateView(String body, @Context HttpHeaders headers, @Context UriInfo ui,
@PathParam("viewName") String viewName) {
return handleRequest(headers, body, ui, Request.Type.PUT, createViewResource(viewName));
}
/**
* Handles: DELETE /views/{viewID}
* Delete a specific view.
*
* @param headers http headers
* @param ui uri info
* @param viewName view id
*
* @return information regarding the deleted view
*/
@DELETE
@Path("{viewName}")
@Produces("text/plain")
public Response deleteView(@Context HttpHeaders headers, @Context UriInfo ui,
@PathParam("viewName") String viewName) {
return handleRequest(headers, null, ui, Request.Type.DELETE, createViewResource(viewName));
}
/**
* Get the instances sub-resource
*
* @param viewName view id
*
* @return the versions service
*/
@Path("{viewName}/versions")
public ViewVersionService getInstanceHandler(@PathParam("viewName") String viewName) {
return new ViewVersionService(viewName);
}
// ----- helper methods ----------------------------------------------------
/**
* Create a view resource.
*
* @param viewName view name
*
* @return a view resource instance
*/
private ResourceInstance createViewResource(String viewName) {
return createResource(Resource.Type.View,
Collections.singletonMap(Resource.Type.View, viewName));
}
}