| /* |
| * 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.asterix.api.http.server; |
| |
| import static org.apache.asterix.api.http.server.ServletConstants.HYRACKS_CONNECTION_ATTR; |
| import static org.apache.asterix.common.api.IClusterManagementWork.ClusterState.SHUTTING_DOWN; |
| |
| import java.io.IOException; |
| import java.io.PrintWriter; |
| import java.util.Date; |
| import java.util.concurrent.ConcurrentMap; |
| |
| import org.apache.asterix.common.cluster.IClusterStateManager; |
| import org.apache.asterix.common.config.GlobalConfig; |
| import org.apache.asterix.common.dataflow.ICcApplicationContext; |
| import org.apache.hyracks.api.client.IHyracksClientConnection; |
| import org.apache.hyracks.http.api.IServletRequest; |
| import org.apache.hyracks.http.api.IServletResponse; |
| import org.apache.hyracks.http.server.AbstractServlet; |
| import org.apache.hyracks.http.server.utils.HttpUtil; |
| import org.apache.hyracks.util.JSONUtil; |
| import org.apache.logging.log4j.Level; |
| import org.apache.logging.log4j.LogManager; |
| import org.apache.logging.log4j.Logger; |
| |
| import com.fasterxml.jackson.databind.node.ArrayNode; |
| import com.fasterxml.jackson.databind.node.ObjectNode; |
| |
| import io.netty.handler.codec.http.HttpResponseStatus; |
| |
| public class ShutdownApiServlet extends AbstractServlet { |
| private static final Logger LOGGER = LogManager.getLogger(); |
| public static final String NODE_ID_KEY = "node_id"; |
| public static final String NCSERVICE_PID = "ncservice_pid"; |
| public static final String INI = "ini"; |
| public static final String PID = "pid"; |
| private final ICcApplicationContext appCtx; |
| |
| public ShutdownApiServlet(ICcApplicationContext appCtx, ConcurrentMap<String, Object> ctx, String[] paths) { |
| super(ctx, paths); |
| this.appCtx = appCtx; |
| } |
| |
| @Override |
| protected void post(IServletRequest request, IServletResponse response) { |
| IHyracksClientConnection hcc = (IHyracksClientConnection) ctx.get(HYRACKS_CONNECTION_ATTR); |
| IClusterStateManager csm = appCtx.getClusterStateManager(); |
| boolean terminateNCServices = "true".equalsIgnoreCase(request.getParameter("all")); |
| Thread t = new Thread(() -> { |
| try { |
| hcc.stopCluster(terminateNCServices); |
| } catch (Exception e) { |
| GlobalConfig.ASTERIX_LOGGER.log(Level.ERROR, "Exception stopping cluster", e); |
| } |
| }, "Shutdown Servlet Worker"); |
| |
| try { |
| HttpUtil.setContentType(response, HttpUtil.ContentType.APPLICATION_JSON, request); |
| } catch (IOException e) { |
| LOGGER.log(Level.WARN, "Failure handling request", e); |
| response.setStatus(HttpResponseStatus.INTERNAL_SERVER_ERROR); |
| return; |
| } |
| response.setStatus(HttpResponseStatus.ACCEPTED); |
| ObjectNode jsonObject = OBJECT_MAPPER.createObjectNode(); |
| try { |
| jsonObject.put("status", "SHUTTING_DOWN"); |
| jsonObject.put("date", new Date().toString()); |
| ObjectNode clusterState = csm.getClusterStateDescription(); |
| ArrayNode ncs = (ArrayNode) clusterState.get("ncs"); |
| for (int i = 0; i < ncs.size(); i++) { |
| ObjectNode nc = (ObjectNode) ncs.get(i); |
| String node = nc.get(NODE_ID_KEY).asText(); |
| final String detailsString = hcc.getNodeDetailsJSON(node, false, true); |
| if (detailsString != null) { |
| ObjectNode details = (ObjectNode) OBJECT_MAPPER.readTree(detailsString); |
| nc.set(PID, details.get(PID)); |
| if (details.has(INI) && details.get(INI).has(NCSERVICE_PID)) { |
| nc.put(NCSERVICE_PID, details.get(INI).get(NCSERVICE_PID).asInt()); |
| } |
| } else { |
| LOGGER.warn("Unable to get node details for " + node + " from hcc"); |
| } |
| } |
| jsonObject.set("cluster", clusterState); |
| final PrintWriter writer = response.writer(); |
| JSONUtil.writeNode(writer, jsonObject); |
| // accept no further queries once this servlet returns |
| csm.setState(SHUTTING_DOWN); |
| writer.close(); |
| } catch (Exception e) { |
| GlobalConfig.ASTERIX_LOGGER.log(Level.INFO, "Exception writing response", e); |
| } |
| t.start(); |
| } |
| |
| } |