Examples with TaskDescriptor org.ow2.proactive.scheduler.common.TaskDescriptor used on opensource projects

Example 26 with TaskDescriptor

use of org.ow2.proactive.scheduler.common.TaskDescriptor in project scheduling by ow2-proactive.

the class SchedulerFrontend method getTasksToSchedule.

@Override
public List<TaskDescriptor> getTasksToSchedule() throws NotConnectedException, PermissionException {
    Policy policy = null;
    List<TaskDescriptor> eligibleTasks = new ArrayList<>();
    Map<JobId, JobDescriptor> jobMap = null;
    try {
        jobMap = schedulingService.lockJobsToSchedule();
        policy = (Policy) Class.forName(getCurrentPolicy()).newInstance();
        // we wait for next scheduling loop
        if (jobMap.isEmpty()) {
            return eligibleTasks;
        }
        List<JobDescriptor> descriptors = new ArrayList<>(jobMap.values());
        LinkedList<EligibleTaskDescriptor> taskRetrievedFromPolicy = policy.getOrderedTasks(descriptors);
        // if there is no task to scheduled, return
        if (taskRetrievedFromPolicy.isEmpty()) {
            return eligibleTasks;
        }
        eligibleTasks = (List) taskRetrievedFromPolicy;
    } catch (Exception e) {
        logger.error("Error Loading Current Policy:", e);
    } finally {
        schedulingService.unlockJobsToSchedule(jobMap.values());
    }
    return eligibleTasks;
}