/**
* This method handles submitting and then waiting for the request from the server. It uses the
* ClientRequest API to actually write the request and then read back the response. This
* implementation will block for a response from the server.
*
* @param <T> Return type
* @param clientRequest ClientRequest implementation used to write the request and read the
* response
* @param operationName Simple string representing the type of request
* @return Data returned by the individual requests
*/
private <T> T request(ClientRequest<T> delegate, String operationName) {
ClientRequestExecutor clientRequestExecutor = pool.checkout(destination);
try {
BlockingClientRequest<T> blockingClientRequest =
new BlockingClientRequest<T>(delegate, timeoutMs);
clientRequestExecutor.addClientRequest(blockingClientRequest, timeoutMs);
blockingClientRequest.await();
return blockingClientRequest.getResult();
} catch (InterruptedException e) {
throw new UnreachableStoreException(
"Failure in " + operationName + " on " + destination + ": " + e.getMessage(), e);
} catch (IOException e) {
clientRequestExecutor.close();
throw new UnreachableStoreException(
"Failure in " + operationName + " on " + destination + ": " + e.getMessage(), e);
} finally {
pool.checkin(destination, clientRequestExecutor);
}
}
public synchronized boolean checkTimeout() {
if (expiration <= 0) return true;
long nowNs = System.nanoTime();
if (nowNs <= expiration) return true;
if (logger.isEnabledFor(Level.WARN)) {
long allowedTime = expiration - startTime;
long elapsedTime = nowNs - startTime;
logger.warn(
"Client request associated with "
+ socketChannel.socket()
+ " timed out. Start time(ns) "
+ startTime
+ " allowed time(ns) "
+ allowedTime
+ " elapsed time(ns) "
+ elapsedTime);
}
isExpired = true;
close();
return false;
}
/**
* This method handles submitting and then waiting for the request from the server. It uses the
* ClientRequest API to actually write the request and then read back the response. This
* implementation will block for a response from the server.
*
* @param <T> Return type
* @param clientRequest ClientRequest implementation used to write the request and read the
* response
* @param operationName Simple string representing the type of request
* @return Data returned by the individual requests
*/
private <T> T request(ClientRequest<T> delegate, String operationName) {
long startTimeMs = -1;
long startTimeNs = -1;
if (logger.isDebugEnabled()) {
startTimeMs = System.currentTimeMillis();
}
ClientRequestExecutor clientRequestExecutor = pool.checkout(destination);
String debugMsgStr = "";
startTimeNs = System.nanoTime();
BlockingClientRequest<T> blockingClientRequest = null;
try {
blockingClientRequest = new BlockingClientRequest<T>(delegate, timeoutMs);
clientRequestExecutor.addClientRequest(
blockingClientRequest, timeoutMs, System.nanoTime() - startTimeNs);
boolean awaitResult = blockingClientRequest.await();
if (awaitResult == false) {
blockingClientRequest.timeOut();
}
if (logger.isDebugEnabled()) debugMsgStr += "success";
return blockingClientRequest.getResult();
} catch (InterruptedException e) {
if (logger.isDebugEnabled()) debugMsgStr += "unreachable: " + e.getMessage();
throw new UnreachableStoreException(
"Failure in " + operationName + " on " + destination + ": " + e.getMessage(), e);
} catch (UnreachableStoreException e) {
clientRequestExecutor.close();
if (logger.isDebugEnabled()) debugMsgStr += "failure: " + e.getMessage();
throw new UnreachableStoreException(
"Failure in " + operationName + " on " + destination + ": " + e.getMessage(),
e.getCause());
} finally {
if (blockingClientRequest != null && !blockingClientRequest.isComplete()) {
// close the executor if we timed out
clientRequestExecutor.close();
}
// Record operation time
long opTimeNs = Utils.elapsedTimeNs(startTimeNs, System.nanoTime());
if (stats != null) {
stats.recordSyncOpTimeNs(destination, opTimeNs);
}
if (logger.isDebugEnabled()) {
logger.debug(
"Sync request end, type: "
+ operationName
+ " requestRef: "
+ System.identityHashCode(delegate)
+ " totalTimeNs: "
+ opTimeNs
+ " start time: "
+ startTimeMs
+ " end time: "
+ System.currentTimeMillis()
+ " client:"
+ clientRequestExecutor.getSocketChannel().socket().getLocalAddress()
+ ":"
+ clientRequestExecutor.getSocketChannel().socket().getLocalPort()
+ " server: "
+ clientRequestExecutor.getSocketChannel().socket().getRemoteSocketAddress()
+ " outcome: "
+ debugMsgStr);
}
pool.checkin(destination, clientRequestExecutor);
}
}