| package org.apache.helix.rest.server.resources.helix; |
| |
| /* |
| * 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. |
| */ |
| |
| import java.io.IOException; |
| import java.util.Collections; |
| import java.util.Map; |
| import javax.ws.rs.GET; |
| import javax.ws.rs.POST; |
| import javax.ws.rs.Path; |
| import javax.ws.rs.PathParam; |
| import javax.ws.rs.QueryParam; |
| import javax.ws.rs.core.Response; |
| |
| import com.codahale.metrics.annotation.ResponseMetered; |
| import com.codahale.metrics.annotation.Timed; |
| import com.fasterxml.jackson.core.type.TypeReference; |
| import org.apache.helix.rest.common.HttpConstants; |
| import org.apache.helix.task.TaskDriver; |
| import org.apache.helix.zookeeper.zkclient.exception.ZkNoNodeException; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| @Path("/clusters/{clusterId}/workflows/{workflowName}/jobs/{jobName}/tasks") |
| public class TaskAccessor extends AbstractHelixResource { |
| private static Logger _logger = LoggerFactory.getLogger(TaskAccessor.class.getName()); |
| |
| @ResponseMetered(name = HttpConstants.READ_REQUEST) |
| @Timed(name = HttpConstants.READ_REQUEST) |
| @GET |
| @Path("{taskPartitionId}/userContent") |
| public Response getTaskUserContent( |
| @PathParam("clusterId") String clusterId, |
| @PathParam("workflowName") String workflowName, |
| @PathParam("jobName") String jobName, |
| @PathParam("taskPartitionId") String taskPartitionid |
| ) { |
| TaskDriver taskDriver = getTaskDriver(clusterId); |
| try { |
| Map<String, String> contentStore = |
| taskDriver.getTaskUserContentMap(workflowName, jobName, taskPartitionid); |
| if (contentStore == null) { |
| return notFound(String.format( |
| "Unable to find content store. Workflow (%s) or Job (%s) or Task content store (%s) not created yet.", |
| workflowName, jobName, taskPartitionid)); |
| } |
| return JSONRepresentation(contentStore); |
| } catch (ZkNoNodeException e) { |
| return notFound(String.format( |
| "Unable to find content store. Workflow (%s) or Job (%s) not created yet.", |
| workflowName, jobName)); |
| } catch (Exception e) { |
| return serverError(e); |
| } |
| } |
| |
| @ResponseMetered(name = HttpConstants.WRITE_REQUEST) |
| @Timed(name = HttpConstants.WRITE_REQUEST) |
| @POST |
| @Path("{taskPartitionId}/userContent") |
| public Response updateTaskUserContent( |
| @PathParam("clusterId") String clusterId, |
| @PathParam("workflowName") String workflowName, |
| @PathParam("jobName") String jobName, |
| @PathParam("taskPartitionId") String taskPartitionid, |
| @QueryParam("command") String commandStr, |
| String content |
| ) { |
| Command cmd; |
| Map<String, String> contentMap = Collections.emptyMap(); |
| try { |
| contentMap = OBJECT_MAPPER.readValue(content, new TypeReference<Map<String, String>>() { |
| }); |
| } catch (IOException e) { |
| return badRequest(String |
| .format("Content %s cannot be deserialized to Map<String, String>. Err: %s", content, |
| e.getMessage())); |
| } |
| |
| try { |
| cmd = (commandStr == null || commandStr.isEmpty()) |
| ? Command.update |
| : Command.valueOf(commandStr); |
| } catch (IllegalArgumentException ie) { |
| return badRequest(String.format("Invalid command: %s. Err: %s", commandStr, ie.getMessage())); |
| } |
| |
| TaskDriver driver = getTaskDriver(clusterId); |
| try { |
| switch (cmd) { |
| case update: |
| driver.addOrUpdateTaskUserContentMap(workflowName, jobName, taskPartitionid, contentMap); |
| return OK(); |
| default: |
| return badRequest(String.format("Command \"%s\" is not supported!", cmd)); |
| } |
| } catch (NullPointerException npe) { |
| // ZkCacheBasedDataAccessor would throw npe if workflow or job does not exist |
| return notFound( |
| String.format("Workflow (%s) or job (%s) does not exist", workflowName, jobName)); |
| } catch (Exception e) { |
| _logger.error("Failed to update user content store", e); |
| return serverError(e); |
| } |
| } |
| } |