private void tryWithMutex(MutableAtomicValue<byte[]> result, MakeValue makeValue)
throws Exception {
long startMs = System.currentTimeMillis();
int retryCount = 0;
if (mutex.acquire(promotedToLock.getMaxLockTime(), promotedToLock.getMaxLockTimeUnit())) {
try {
boolean done = false;
while (!done) {
result.stats.incrementPromotedTries();
if (tryOnce(result, makeValue)) {
result.succeeded = true;
done = true;
} else {
if (!promotedToLock
.getRetryPolicy()
.allowRetry(
retryCount++,
System.currentTimeMillis() - startMs,
RetryLoop.getDefaultRetrySleeper())) {
done = true;
}
}
}
} finally {
mutex.release();
}
}
result.stats.setPromotedTimeMs(System.currentTimeMillis() - startMs);
}
private Map<String, String> queryExhibitors(Exhibitors localExhibitors) {
Map<String, String> values = newValues();
long start = System.currentTimeMillis();
int retries = 0;
boolean done = false;
while (!done) {
List<String> hostnames = Lists.newArrayList(localExhibitors.getHostnames());
if (hostnames.size() == 0) {
done = true;
} else {
String hostname = hostnames.get(random.nextInt(hostnames.size()));
try {
String encoded =
restClient.getRaw(hostname, localExhibitors.getRestPort(), restUriPath, MIME_TYPE);
values.putAll(decodeExhibitorList(encoded));
done = true;
} catch (Throwable e) {
if (retryPolicy.allowRetry(
retries++, System.currentTimeMillis() - start, RetryLoop.getDefaultRetrySleeper())) {
log.warn("Couldn't get servers from Exhibitor. Retrying.", e);
} else {
log.error("Couldn't get servers from Exhibitor. Giving up.", e);
done = true;
}
}
}
}
return values;
}
private void tryOptimistic(MutableAtomicValue<byte[]> result, MakeValue makeValue)
throws Exception {
long startMs = System.currentTimeMillis();
int retryCount = 0;
boolean done = false;
while (!done) {
result.stats.incrementOptimisticTries();
if (tryOnce(result, makeValue)) {
result.succeeded = true;
done = true;
} else {
if (!retryPolicy.allowRetry(
retryCount++,
System.currentTimeMillis() - startMs,
RetryLoop.getDefaultRetrySleeper())) {
done = true;
}
}
}
result.stats.setOptimisticTimeMs(System.currentTimeMillis() - startMs);
}