MonitorHandler.java

/*
 * Copyright © 2014-2015 Cask Data, Inc.
 *
 * 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 co.cask.cdap.gateway.handlers;

import co.cask.cdap.app.store.ServiceStore;
import co.cask.cdap.common.conf.Constants;
import co.cask.cdap.common.twill.MasterServiceManager;
import co.cask.http.HttpResponder;
import com.google.inject.Inject;
import org.jboss.netty.handler.codec.http.HttpRequest;

import java.util.Map;
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;

/**
 * Monitor Handler V3
 */
@Path(Constants.Gateway.API_VERSION_3)
public class MonitorHandler extends AbstractMonitorHandler {

  @Inject
  public MonitorHandler(Map<String, MasterServiceManager> serviceMap,
                        ServiceStore serviceStore) throws Exception {
    super(serviceMap, serviceStore);
  }

  /**
   * Returns the live info of CDAP Services
   */
  @Path("/system/services/{service-name}/live-info")
  @GET
  public void getServiceLiveInfo(HttpRequest request, HttpResponder responder,
                                 @PathParam("service-name") String serviceName) throws Exception {
    super.getServiceLiveInfo(request, responder, serviceName);
  }

  /**
   * Returns the number of instances of CDAP Services
   */
  @Path("/system/services/{service-name}/instances")
  @GET
  public void getServiceInstance(HttpRequest request, HttpResponder responder,
                                 @PathParam("service-name") String serviceName) throws Exception {

    super.getServiceInstance(request, responder, serviceName);
  }

  /**
   * Sets the number of instances of CDAP Services
   */
  @Path("/system/services/{service-name}/instances")
  @PUT
  public void setServiceInstance(HttpRequest request, HttpResponder responder,
                                 @PathParam("service-name") final String serviceName) {
    super.setServiceInstance(request, responder, serviceName);
  }

  // Return the status of CDAP services in JSON format
  @Path("/system/services/status")
  @GET
  public void getBootStatus(HttpRequest request, HttpResponder responder) {
    super.getBootStatus(request, responder);
  }

  @Path("/system/services/{service-name}/status")
  @GET
  public void monitor(HttpRequest request, HttpResponder responder,
                      @PathParam("service-name") String serviceName) {
    super.monitor(request, responder, serviceName);
  }

  @Path("/system/services")
  @GET
  public void getServiceSpec(HttpRequest request, HttpResponder responder) throws Exception {
    super.getServiceSpec(request, responder);
  }

  /**
   * Send request to restart all instances for a CDAP system service.
   */
  @Path("/system/services/{service-name}/restart")
  @POST
  public void restartAllServiceInstances(HttpRequest request, HttpResponder responder,
                                         @PathParam("service-name") String serviceName) {
    super.restartAllServiceInstances(request, responder, serviceName);
  }

  /**
   * Send request to restart single instance identified by <instance-id>
   */
  @Path("/system/services/{service-name}/instances/{instance-id}/restart")
  @POST
  public void restartServiceInstance(HttpRequest request, HttpResponder responder,
                                     @PathParam("service-name") String serviceName,
                                     @PathParam("instance-id") int instanceId) {
    super.restartServiceInstance(request, responder, serviceName, instanceId);
  }

  /**
   * Send request to get the status of latest restart instances request for a CDAP system service.
   */
  @Path("/system/services/{service-name}/latest-restart")
  @GET
  public void getLatestRestartServiceInstanceStatus(HttpRequest request, HttpResponder responder,
                                                    @PathParam("service-name") String serviceName) {
    super.getLatestRestartServiceInstanceStatus(request, responder, serviceName);
  }

}