Example usage for java.io SequenceInputStream SequenceInputStream

Introduction

In this page you can find the example usage for java.io SequenceInputStream SequenceInputStream.

Prototype

public SequenceInputStream(Enumeration<? extends InputStream> e)

Source Link

Document

Initializes a newly created SequenceInputStream by remembering the argument, which must be an Enumeration that produces objects whose run-time type is InputStream.

Usage

From source file:org.ow2.proactive_grid_cloud_portal.scheduler.SchedulerStateRest.java

@Override
@GET/*  w  w  w  .j  a  v a 2 s .  co m*/
@GZIP
@Path("jobs/{jobid}/log/full")
@Produces("application/json")
public InputStream jobFullLogs(@HeaderParam("sessionid") String sessionId, @PathParam("jobid") String jobId,
        @QueryParam("sessionid") String session) throws NotConnectedRestException, UnknownJobRestException,
        UnknownTaskRestException, PermissionRestException, IOException {

    if (sessionId == null) {
        sessionId = session;
    }

    try {
        Scheduler scheduler = checkAccess(sessionId, "jobs/" + jobId + "/log/full");

        JobState jobState = scheduler.getJobState(jobId);

        List<TaskState> tasks = jobState.getTasks();
        List<InputStream> streams = new ArrayList<>(tasks.size());

        Collections.sort(tasks, TaskState.COMPARE_BY_FINISHED_TIME_ASC);

        for (TaskState taskState : tasks) {

            InputStream inputStream = null;

            try {
                if (taskState.isPreciousLogs()) {
                    inputStream = retrieveTaskLogsUsingDataspaces(sessionId, jobId, taskState.getId());
                } else {
                    String taskLogs = retrieveTaskLogsUsingDatabase(sessionId, jobId, taskState.getName());

                    if (!taskLogs.isEmpty()) {
                        inputStream = IOUtils.toInputStream(taskLogs);
                    }

                    logger.warn("Retrieving truncated logs for task '" + taskState.getId() + "'");
                }
            } catch (Exception e) {
                logger.info("Could not retrieve logs for task " + taskState.getId()
                        + " (could be a non finished or killed task)", e);
            }

            if (inputStream != null) {
                streams.add(inputStream);
            }
        }

        if (streams.isEmpty()) {
            return null; // will produce HTTP 204 code
        } else {
            return new SequenceInputStream(Collections.enumeration(streams));
        }
    } catch (PermissionException e) {
        throw new PermissionRestException(e);
    } catch (UnknownJobException e) {
        throw new UnknownJobRestException(e);
    } catch (NotConnectedException e) {
        throw new NotConnectedRestException(e);
    }
}