content: /**
   * 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.util.Map;
  
  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 com.google.common.collect.ImmutableMap;
  
  import org.apache.aurora.scheduler.base.JobKeys;
  import org.apache.aurora.scheduler.cron.CronJobManager;
  import org.apache.aurora.scheduler.cron.CrontabEntry;
  import org.apache.aurora.scheduler.storage.entities.IJobKey;
  
  /**
   * HTTP interface to dump state of the internal cron scheduler.
   */
  @Path("/cron")
  public class Cron {
    private final CronJobManager cronManager;
  
    @Inject
    Cron(CronJobManager cronManager) {
      this.cronManager = cronManager;
    }
  
    /**
     * Dumps the state of the cron manager.
     *
     * @return An HTTP response containing the cron manager's state.
     */
    @GET
    @Produces(MediaType.APPLICATION_JSON)
    public Response dumpContents() {
      ImmutableMap.Builder<String, String> scheduled = ImmutableMap.builder();
      for (Map.Entry<IJobKey, CrontabEntry> entry : cronManager.getScheduledJobs().entrySet()) {
        scheduled.put(JobKeys.canonicalString(entry.getKey()), entry.getValue().toString());
      }
  
      return Response.ok(ImmutableMap.of("scheduled", scheduled.build())).build();
    }
  }
  