/** @param log Logger. */
private void execute(GridLogger log) {
try {
log.info("Started execute.");
// Countdown shared job latch so that the main thread know that all jobs are
// inside the "execute" routine.
jobLatch.countDown();
log.info("After job latch.");
// Await for the main thread to allow jobs to proceed.
latch.await();
log.info("After latch.");
if (awaitMasterLeaveCallback) {
latch0.await();
log.info("After latch0.");
} else log.info("Latch 0 skipped.");
} catch (InterruptedException e) {
// We do not expect any interruptions here, hence this statement.
fail("Unexpected exception: " + e);
}
}
/** {@inheritDoc} */
@Override
public void spiStop() throws GridSpiException {
unregisterMBean();
// Ack ok stop.
if (log.isDebugEnabled()) log.debug(stopInfo());
}
/**
* Method cleans up all events that either outnumber queue size or exceeds time-to-live value. It
* does none if someone else cleans up queue (lock is locked) or if there are queue readers
* (readersNum > 0).
*/
private void cleanupQueue() {
long now = U.currentTimeMillis();
long queueOversize = evts.sizex() - expireCnt;
for (int i = 0; i < queueOversize && evts.sizex() > expireCnt; i++) {
GridEvent expired = evts.poll();
if (log.isDebugEnabled()) log.debug("Event expired by count: " + expired);
}
while (true) {
ConcurrentLinkedDeque8.Node<GridEvent> node = evts.peekx();
if (node == null) // Queue is empty.
break;
GridEvent evt = node.item();
if (evt == null) // Competing with another thread.
continue;
if (now - evt.timestamp() < expireAgeMs) break;
if (evts.unlinkx(node) && log.isDebugEnabled())
log.debug("Event expired by age: " + node.item());
}
}
/**
* Gets job priority. At first tries to get from job context. If job context has no priority, then
* tries to get from task session. If task session has no priority default one will be used.
*
* @param ctx Collision job context.
* @return Job priority.
*/
private int getJobPriority(GridCollisionJobContext ctx) {
assert ctx != null;
Integer p = null;
GridJobContext jctx = ctx.getJobContext();
try {
p = (Integer) jctx.getAttribute(jobAttrKey);
} catch (ClassCastException e) {
LT.error(
log,
e,
"Type of job context priority attribute '"
+ jobAttrKey
+ "' is not java.lang.Integer [type="
+ jctx.getAttribute(jobAttrKey).getClass()
+ ']');
}
if (p == null) {
GridTaskSession ses = ctx.getTaskSession();
try {
p = (Integer) ses.getAttribute(taskAttrKey);
} catch (ClassCastException e) {
LT.error(
log,
e,
"Type of task session priority attribute '"
+ taskAttrKey
+ "' is not java.lang.Integer [type="
+ ses.getAttribute(taskAttrKey).getClass()
+ ']');
}
if (p == null) {
if (log.isDebugEnabled()) {
log.debug(
"Failed get priority from job context attribute '"
+ jobAttrKey
+ "' and task session attribute '"
+ taskAttrKey
+ "' (will use default priority): "
+ dfltPriority);
}
p = dfltPriority;
}
}
assert p != null;
return p;
}
/** {@inheritDoc} */
@Override
public void spiStart(String gridName) throws GridSpiException {
assertParameter(parallelJobsNum > 0, "parallelJobsNum > 0");
assertParameter(waitJobsNum >= 0, "waitingJobsNum >= 0");
assertParameter(taskAttrKey != null, "taskAttrKey != null");
assertParameter(jobAttrKey != null, "jobAttrKey != null");
// Start SPI start stopwatch.
startStopwatch();
// Ack parameters.
if (log.isDebugEnabled()) {
log.debug(configInfo("parallelJobsNum", parallelJobsNum));
log.debug(configInfo("taskAttrKey", taskAttrKey));
log.debug(configInfo("jobAttrKey", jobAttrKey));
log.debug(configInfo("dfltPriority", dfltPriority));
log.debug(configInfo("starvationInc", starvationInc));
log.debug(configInfo("preventStarvation", preventStarvation));
}
registerMBean(gridName, this, GridPriorityQueueCollisionSpiMBean.class);
// Ack start.
if (log.isDebugEnabled()) log.debug(startInfo());
}
/** {@inheritDoc} */
@Override
public void record(GridEvent evt) throws GridSpiException {
assert evt != null;
// Filter out events.
if (filter == null || filter.apply(evt)) {
cleanupQueue();
evts.add(evt);
// Make sure to filter out metrics updates to prevent log from flooding.
if (evt.type() != EVT_NODE_METRICS_UPDATED && log.isDebugEnabled())
log.debug("Event recorded: " + evt);
}
}
/**
* @param log Logger.
* @param job Actual job.
*/
private void onMasterLeave(GridLogger log, Object job) {
log.info("Callback executed: " + job);
latch0.countDown();
invokeLatch.countDown();
}
/** {@inheritDoc} */
@Override
public void spiStart(String gridName) throws GridSpiException {
// Start SPI start stopwatch.
startStopwatch();
assertParameter(expireCnt > 0, "expireCnt > 0");
assertParameter(expireAgeMs > 0, "expireAgeMs > 0");
// Ack parameters.
if (log.isDebugEnabled()) {
log.debug(configInfo("expireAgeMs", expireAgeMs));
log.debug(configInfo("expireCnt", expireCnt));
}
registerMBean(gridName, this, GridMemoryEventStorageSpiMBean.class);
// Ack ok start.
if (log.isDebugEnabled()) log.debug(startInfo());
}