| /** |
| * Licensed 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.aurora.scheduler.http; |
| |
| import java.io.IOException; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Objects; |
| |
| import javax.inject.Inject; |
| import javax.ws.rs.GET; |
| import javax.ws.rs.Path; |
| import javax.ws.rs.Produces; |
| import javax.ws.rs.core.MediaType; |
| import javax.ws.rs.core.Response; |
| |
| import org.apache.aurora.scheduler.base.TaskGroupKey; |
| import org.apache.aurora.scheduler.metadata.NearestFit; |
| import org.apache.aurora.scheduler.scheduling.TaskGroup; |
| import org.apache.aurora.scheduler.scheduling.TaskGroups; |
| import org.codehaus.jackson.map.ObjectMapper; |
| import org.codehaus.jackson.node.ArrayNode; |
| import org.codehaus.jackson.node.ObjectNode; |
| |
| /** |
| * Servlet that exposes detailed information about tasks that are pending. |
| */ |
| @Path("/pendingtasks") |
| public class PendingTasks { |
| |
| private final TaskGroups taskGroups; |
| private final NearestFit nearestFit; |
| |
| @Inject |
| PendingTasks(TaskGroups taskGroups, NearestFit nearestFit) { |
| this.taskGroups = Objects.requireNonNull(taskGroups); |
| this.nearestFit = Objects.requireNonNull(nearestFit); |
| } |
| |
| /** |
| * Returns information about pending tasks. |
| * |
| * @return HTTP response. |
| */ |
| @GET |
| @Produces(MediaType.APPLICATION_JSON) |
| public Response getOffers() throws IOException { |
| Map<TaskGroupKey, List<String>> taskGroupReasonMap = |
| nearestFit.getPendingReasons(taskGroups.getGroups()); |
| |
| ObjectMapper mapper = new ObjectMapper(); |
| ArrayNode jsonNode = mapper.createArrayNode(); |
| |
| // Add the attribute "reason" to each serialized taskgroup |
| for (TaskGroup group : taskGroups.getGroups()) { |
| ObjectNode pendingTask = (ObjectNode) mapper.valueToTree(group); |
| |
| pendingTask.put("reason", taskGroupReasonMap.get(group.getKey()).toString()); |
| jsonNode.add(pendingTask); |
| } |
| return Response.ok(jsonNode).build(); |
| } |
| |
| } |