/**
* Expands the hierarchy of queues and gives the list of all queues in depth-first order
*
* @param rootQueues the top-level queues
* @return the list of all the queues in depth-first order.
*/
List<JobQueueInfo> expandQueueList(JobQueueInfo[] rootQueues) {
List<JobQueueInfo> allQueues = new ArrayList<JobQueueInfo>();
for (JobQueueInfo queue : rootQueues) {
allQueues.add(queue);
if (queue.getChildren() != null) {
JobQueueInfo[] childQueues = queue.getChildren().toArray(new JobQueueInfo[0]);
allQueues.addAll(expandQueueList(childQueues));
}
}
return allQueues;
}
/**
* Method used to display information pertaining to a Single JobQueue registered with the {@link
* QueueManager}. Display of the Jobs is determine by the boolean
*
* @throws IOException
*/
private void displayQueueInfo(String queue, boolean showJobs) throws IOException {
JobQueueInfo jobQueueInfo = jc.getQueueInfo(queue);
if (jobQueueInfo == null) {
System.out.println("Queue \"" + queue + "\" does not exist.");
return;
}
printJobQueueInfo(jobQueueInfo, new PrintWriter(System.out));
if (showJobs
&& (jobQueueInfo.getChildren() == null || jobQueueInfo.getChildren().size() == 0)) {
JobStatus[] jobs = jc.getJobsFromQueue(queue);
if (jobs == null) jobs = new JobStatus[0];
jc.displayJobList(jobs);
}
}
// format and print information about the passed in job queue.
void printJobQueueInfo(JobQueueInfo jobQueueInfo, Writer writer) throws IOException {
if (jobQueueInfo == null) {
writer.write("No queue found.\n");
writer.flush();
return;
}
writer.write(String.format("Queue Name : %s \n", jobQueueInfo.getQueueName()));
writer.write(String.format("Queue State : %s \n", jobQueueInfo.getQueueState()));
writer.write(String.format("Scheduling Info : %s \n", jobQueueInfo.getSchedulingInfo()));
List<JobQueueInfo> childQueues = jobQueueInfo.getChildren();
if (childQueues != null && childQueues.size() > 0) {
writer.write(String.format("Child Queues : "));
for (int i = 0; i < childQueues.size(); i++) {
JobQueueInfo childQueue = childQueues.get(i);
writer.write(String.format("%s", childQueue.getQueueName()));
if (i != childQueues.size() - 1) {
writer.write(String.format(", "));
}
}
writer.write("\n");
}
writer.write(String.format("======================\n"));
writer.flush();
}