/**
* 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> void requestAsync(
ClientRequest<T> delegate,
NonblockingStoreCallback callback,
long timeoutMs,
String operationName) {
ClientRequestExecutor clientRequestExecutor = null;
try {
clientRequestExecutor = pool.checkout(destination);
} catch (Exception e) {
// If we can't check out a socket from the pool, we'll usually get
// either an IOException (subclass) or an UnreachableStoreException
// error. However, in the case of asynchronous calls, we want the
// error to be reported via our callback, not returned to the caller
// directly.
if (!(e instanceof UnreachableStoreException))
e = new UnreachableStoreException("Failure in " + operationName + ": " + e.getMessage(), e);
try {
callback.requestComplete(e, 0);
} catch (Exception ex) {
if (logger.isEnabledFor(Level.WARN)) logger.warn(ex, ex);
}
return;
}
NonblockingStoreCallbackClientRequest<T> clientRequest =
new NonblockingStoreCallbackClientRequest<T>(delegate, clientRequestExecutor, callback);
clientRequestExecutor.addClientRequest(clientRequest, timeoutMs);
}
private void invokeCallback(Object o, long requestTime) {
if (callback != null) {
try {
callback.requestComplete(o, requestTime);
} catch (Exception e) {
if (logger.isEnabledFor(Level.WARN)) logger.warn(e, e);
}
}
}