Examples of ca.eandb.jdcp.job.TaskDescription

ca.eandb.jdcp.job.TaskDescription
A description of a task assigned by a JobMasterService. @author Brad Kimmel @see {@link JobService#requestTask()}.

     * Submits the results for a task associated with this job.
     * @param taskId The ID of the task whose results are being submitted.
     * @param results The serialized results.
     */
    public void submitTaskResults(int taskId, Serialized<Object> results) {
      TaskDescription taskDesc = scheduler.remove(id, taskId);
      if (taskDesc != null) {
        Object task = taskDesc.getTask().get();
        Runnable command = new TaskResultSubmitter(this, task, results, this);
        try {
          executor.execute(command);
        } catch (RejectedExecutionException e) {
          command.run();

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    public void scheduleNextTask() throws JobExecutionException {
      Object task = job.getNextTask();
      stalled = (task == null);
      if (!stalled) {
        int taskId = generateTaskId();
        TaskDescription desc = new TaskDescription(id, taskId, task);
        scheduler.add(desc);
      }
    }

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  /* (non-Javadoc)
   * @see ca.eandb.jdcp.remote.JobService#requestTask()
   */
  public synchronized TaskDescription requestTask() throws SecurityException {
    TaskDescription taskDesc = scheduler.getNextTask();
    if (taskDesc != null) {
      ScheduledJob sched = jobs.get(taskDesc.getJobId());
      try {
        sched.scheduleNextTask();
      } catch (JobExecutionException e) {
        handleJobExecutionException(e, sched.id);
      }

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  /* (non-Javadoc)
   * @see ca.eandb.jdcp.remote.JobService#setIdleTime(int)
   */
  public void setIdleTime(int idleSeconds) throws IllegalArgumentException,
      SecurityException {
    idleTask = new TaskDescription(null, 0, idleSeconds);
    if (logger.isInfoEnabled()) {
      logger.info("Idle time set to " + Integer.toString(idleSeconds));
    }
  }

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     * Submits the results for a task associated with this job.
     * @param taskId The ID of the task whose results are being submitted.
     * @param results The serialized results.
     */
    public void submitTaskResults(int taskId, Serialized<Object> results) {
      TaskDescription taskDesc = scheduler.remove(id, taskId);
      if (taskDesc != null) {
        Object task = taskDesc.getTask().get();
        Runnable command = new TaskResultSubmitter(this, task, results, monitor);
        try {
          executor.execute(command);
        } catch (RejectedExecutionException e) {
          command.run();

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     */
    public void scheduleNextTask() throws JobExecutionException {
      Object task = job.getNextTask();
      if (task != null) {
        int taskId = generateTaskId();
        TaskDescription desc = new TaskDescription(id, taskId, task);
        scheduler.add(desc);
      }
    }

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  /* (non-Javadoc)
   * @see ca.eandb.jdcp.scheduling.TaskScheduler#getNextTask()
   */
  public TaskDescription getNextTask() {
    TaskDescription desc = null;


    while (true) {
      UUID jobId = jobQueue.peek();
      if (jobId == null) {
        break;

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          synchronized (this) {
            if (services.remove(info)) {
              services.add(info);
            }
          }
          TaskDescription task = info.requestTask();
          if (task != null) {
            UUID jobId = task.getJobId();
            routes.put(jobId, info);
            return task;
          }
        } catch (Exception e) {
          logger.error("Failed to request task from server", e);

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  /* (non-Javadoc)
   * @see ca.eandb.jdcp.remote.JobService#setIdleTime(int)
   */
  public void setIdleTime(int idleSeconds) throws IllegalArgumentException {
    idleTask = new TaskDescription(null, 0, idleSeconds);
  }

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  /* (non-Javadoc)
   * @see ca.eandb.jdcp.remote.JobService#requestTask()
   */
  public synchronized TaskDescription requestTask() throws SecurityException {
    TaskDescription taskDesc = scheduler.getNextTask();
    if (taskDesc != null) {
      ScheduledJob sched = jobs.get(taskDesc.getJobId());
      try {
        ServerUtil.setHostService(sched);
        sched.scheduleNextTask();
      } catch (JobExecutionException e) {
        handleJobExecutionException(e, sched.id);
      } finally {
        ServerUtil.clearHostService();
      }
      return taskDesc;
    }


    int n = services.size();
    if (n > 0) {
      ServiceInfo[] serv;
      synchronized (this) {
        serv = (ServiceInfo[]) services.toArray(new ServiceInfo[n]);
      }
      for (ServiceInfo info : serv) {
        try {
          synchronized (this) {
            if (services.remove(info)) {
              services.add(info);
            }
          }
          TaskDescription task = info.requestTask();
          if (task != null) {
            UUID jobId = task.getJobId();
            routes.put(jobId, info);
            return task;
          }
        } catch (Exception e) {
          logger.error("Failed to request task from server", e);

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ca.eandb.jdcp.server.JobServer$ScheduledJob

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