private boolean runPolling() {
try {
// to make sure that the log file contains up-to-date text,
// don't do buffering.
StreamTaskListener listener = new StreamTaskListener(getLogFile());
try {
PrintStream logger = listener.getLogger();
long start = System.currentTimeMillis();
logger.println("Started on " + DateFormat.getDateTimeInstance().format(new Date()));
boolean result = job.poll(listener).hasChanges();
logger.println(
"Done. Took " + Util.getTimeSpanString(System.currentTimeMillis() - start));
if (result) {
logger.println("Changes found");
} else {
logger.println("No changes");
}
return result;
} catch (Error e) {
e.printStackTrace(listener.error("Failed to record SCM polling"));
LOGGER.log(Level.SEVERE, "Failed to record SCM polling", e);
throw e;
} catch (RuntimeException e) {
e.printStackTrace(listener.error("Failed to record SCM polling"));
LOGGER.log(Level.SEVERE, "Failed to record SCM polling", e);
throw e;
} finally {
listener.close();
}
} catch (IOException e) {
LOGGER.log(Level.SEVERE, "Failed to record SCM polling", e);
return false;
}
}
public void run() {
String threadName = Thread.currentThread().getName();
Thread.currentThread().setName("SCM polling for " + job);
try {
startTime = System.currentTimeMillis();
if (runPolling()) {
AbstractProject p = job.asProject();
String name = " #" + p.getNextBuildNumber();
SCMTriggerCause cause;
try {
cause = new SCMTriggerCause(getLogFile());
} catch (IOException e) {
LOGGER.log(WARNING, "Failed to parse the polling log", e);
cause = new SCMTriggerCause();
}
if (p.scheduleBuild(p.getQuietPeriod(), cause, additionalActions)) {
LOGGER.info("SCM changes detected in " + job.getName() + ". Triggering " + name);
} else {
LOGGER.info(
"SCM changes detected in " + job.getName() + ". Job is already in the queue");
}
}
} finally {
Thread.currentThread().setName(threadName);
}
}
/** Human readable string of when this polling is started. */
public String getDuration() {
return Util.getTimeSpanString(System.currentTimeMillis() - startTime);
}