Example usage for weka.experiment TaskStatusInfo getTaskResult

Introduction

In this page you can find the example usage for weka.experiment TaskStatusInfo getTaskResult.

Prototype

public Object getTaskResult() 

Source Link

Document

Get the returnable result of this task.

Usage

From source file:core.utils.ui.RemoteEngine.java

License:Open Source License

/**
 * Returns status information on a particular task
 *
 * @param taskId the ID of the task to check
 * @return a <code>TaskStatusInfo</code> encapsulating task status info
 * @exception Exception if an error occurs
 *///from   w ww  .j  a  v a  2s.  co m
public Object checkStatus(Object taskId) throws Exception {

    TaskStatusInfo inf = (TaskStatusInfo) m_TaskStatus.get(taskId);

    if (inf == null) {
        throw new Exception("RemoteEngine (" + m_HostName + ") : Task not found.");
    }

    TaskStatusInfo result = new TaskStatusInfo();
    result.setExecutionStatus(inf.getExecutionStatus());
    result.setStatusMessage(inf.getStatusMessage());
    result.setTaskResult(inf.getTaskResult());

    if (inf.getExecutionStatus() == TaskStatusInfo.FINISHED
            || inf.getExecutionStatus() == TaskStatusInfo.FAILED) {
        System.err.println("Finished/failed Task id : " + taskId + " checked by client. Removing.");
        inf.setTaskResult(null);
        inf = null;
        m_TaskStatus.remove(taskId);
    }
    inf = null;
    return result;
}

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From source file:core.utils.ui.RemoteEngine.java

License:Open Source License

/**
 * Checks to see if there are any waiting tasks, and if no task is
 * currently running starts a waiting task.
 *//*from w w  w .j  a va2s . c  om*/
private void startTask() {

    if (m_TaskRunning == false && m_TaskQueue.size() > 0) {
        Thread activeTaskThread;
        activeTaskThread = new Thread() {

            public void run() {
                m_TaskRunning = true;
                Task currentTask = (Task) m_TaskQueue.pop();
                String taskId = (String) m_TaskIdQueue.pop();
                TaskStatusInfo tsi = (TaskStatusInfo) m_TaskStatus.get(taskId);
                tsi.setExecutionStatus(TaskStatusInfo.PROCESSING);
                tsi.setStatusMessage("RemoteEngine (" + m_HostName + ") : task " + taskId + " running...");
                try {
                    System.err.println("Launching task id : " + taskId + "...");
                    currentTask.execute();
                    TaskStatusInfo runStatus = currentTask.getTaskStatus();
                    tsi.setExecutionStatus(runStatus.getExecutionStatus());
                    tsi.setStatusMessage(
                            "RemoteExperiment (" + m_HostName + ") " + runStatus.getStatusMessage());
                    tsi.setTaskResult(runStatus.getTaskResult());
                } catch (Error er) {
                    // Object initialization can raise Error, which are not subclass of Exception
                    tsi.setExecutionStatus(TaskStatusInfo.FAILED);
                    if (er.getCause() instanceof java.security.AccessControlException) {
                        tsi.setStatusMessage("RemoteEngine (" + m_HostName
                                + ") : security error, check remote policy file.");
                        System.err.println("Task id " + taskId + " Failed! Check remote policy file");
                    } else {
                        tsi.setStatusMessage(
                                "RemoteEngine (" + m_HostName + ") : unknown initialization error.");
                        System.err.println("Task id " + taskId + " Unknown initialization error");
                    }
                } catch (Exception ex) {
                    tsi.setExecutionStatus(TaskStatusInfo.FAILED);
                    if (ex instanceof java.io.FileNotFoundException) {
                        tsi.setStatusMessage("RemoteEngine (" + m_HostName + ") : " + ex.getMessage());
                        System.err.println("Task id " + taskId + " Failed, " + ex.getMessage());
                    } else {
                        tsi.setStatusMessage("RemoteEngine (" + m_HostName + ") : task " + taskId + " failed.");
                        System.err.println("Task id " + taskId + " Failed!");
                    }
                } finally {
                    if (m_TaskStatus.size() == 0) {
                        purgeClasses();
                    }
                    m_TaskRunning = false;
                    // start any waiting tasks
                    startTask();
                }
            }
        };
        activeTaskThread.setPriority(Thread.MIN_PRIORITY);
        activeTaskThread.start();
    }
}

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