/**
* All the search requests are sent out in parallel.... wait for all of them to be done. This
* method can be called as-is from a waiter thread with push ...that is if the push can work more
* reliably.
*/
private void waitForSearchResults(PatientSearchCompletionService completionService) {
try {
System.out.println("#################" + completionService.getNodesToSearch().size());
List<NBIANode> noResponseNode = new ArrayList<NBIANode>();
for (NBIANode node : completionService.getNodesToSearch()) {
noResponseNode.add(node);
}
for (int i = 0; i < completionService.getNodesToSearch().size(); i++) {
try {
// this is a blocking call
Future<PatientSearchResults> future =
completionService
.getCompletionService()
.poll(NCIAConfig.getTimeoutInMin(), TimeUnit.MINUTES);
// this is a blocking call
PatientSearchResults result = null;
if (future != null) {
result = future.get();
System.out.println(
"got response from node " + result.getNode().getDisplayName() + " so remove it");
noResponseNode.remove(result.getNode()); // got response so remove it
logResult(result);
addNodeResult(result);
}
} catch (CancellationException e) {
e.printStackTrace();
}
// pushToBrowser();
}
if (noResponseNode != null && !noResponseNode.isEmpty()) {
// check is there are any node from where, no response came with configurable minutes.
for (NBIANode node : noResponseNode) {
System.out.println("no response Node" + node.getDisplayName());
Exception searchError = new Exception("no response from node");
PatientSearchResults result = new PatientSearchResults(node, searchError);
logResult(result);
addNodeResult(result);
}
}
System.out.println("done waiting for results");
}
// catch(InterruptedException ie) {
// System.out.println("interrupted the async result waiter");
// }
catch (Exception ex) {
// shouldnt get here, the search result service should capture
// any exceptions and results a search result that indicates
// there was an error
ex.printStackTrace();
}
}
private AlgoResponse pipeRequest(String input, ContentType content_type) throws APIException {
try {
return pipeRequestAsync(input, content_type).get();
} catch (java.util.concurrent.ExecutionException e) {
throw new APIException(e.getCause().getMessage());
} catch (java.util.concurrent.CancellationException e) {
throw new APIException(
"API connection cancelled: " + algoRef.getUrl() + " (" + e.getMessage() + ")", e);
} catch (java.lang.InterruptedException e) {
throw new APIException(
"API connection interrupted: " + algoRef.getUrl() + " (" + e.getMessage() + ")", e);
}
}
/** @see javax.swing.SwingWorker#done() */
@Override
protected void done() {
try {
Map<SignatureType, SignatureFileInfo> updatedFiles = get();
progressDialog.setVisible(false);
DialogUtils.showUpdateSuccessfulDialog(parent, updatedFiles);
} catch (InterruptedException e) {
log.debug(e);
} catch (ExecutionException e) {
log.error(e.getCause(), e);
progressDialog.setVisible(false);
DialogUtils.showSignatureUpdateErrorDialog(parent, e.getCause());
} catch (CancellationException e) {
log.warn(e.getMessage());
} finally {
progressDialog.setVisible(false);
progressDialog.dispose();
parent.setCursor(Cursor.getDefaultCursor());
}
}
/**
* @param files
* @return
* @throws PMDException
*/
public static Map<String, IPackage> computeAsts(final Map<String, IFlexFile> files)
throws PMDException {
final Map<String, IPackage> asts = new LinkedHashMap<String, IPackage>();
for (final Entry<String, IFlexFile> fileEntry : files.entrySet()) {
final IFlexFile file = fileEntry.getValue();
try {
final IParserNode node = buildThreadedAst(file);
asts.put(file.getFullyQualifiedName(), NodeFactory.createPackage(node));
} catch (final InterruptedException e) {
LOGGER.warning(buildLogMessage(file, e.getMessage()));
} catch (final NoClassDefFoundError e) {
LOGGER.warning(buildLogMessage(file, e.getMessage()));
} catch (final ExecutionException e) {
LOGGER.warning(buildLogMessage(file, e.getMessage()));
} catch (final CancellationException e) {
LOGGER.warning(buildLogMessage(file, e.getMessage()));
}
}
return asts;
}
private FactoryManager getApplicationFactoryManager(ClassLoader cl) {
while (true) {
Future<FactoryManager> factories = applicationMap.get(cl);
if (factories == null) {
Callable<FactoryManager> callable =
new Callable<FactoryManager>() {
public FactoryManager call() throws Exception {
return new FactoryManager();
}
};
FutureTask<FactoryManager> ft = new FutureTask<FactoryManager>(callable);
factories = applicationMap.putIfAbsent(cl, ft);
if (factories == null) {
factories = ft;
ft.run();
}
}
try {
return factories.get();
} catch (CancellationException ce) {
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.log(Level.FINEST, ce.toString(), ce);
}
applicationMap.remove(cl);
} catch (InterruptedException ie) {
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.log(Level.FINEST, ie.toString(), ie);
}
applicationMap.remove(cl);
} catch (ExecutionException ee) {
throw new FacesException(ee);
}
}
}
@Override
public Result[] call(int timeout) throws IOException {
// If the active replica callable was closed somewhere, invoke the RPC to
// really close it. In the case of regular scanners, this applies. We make couple
// of RPCs to a RegionServer, and when that region is exhausted, we set
// the closed flag. Then an RPC is required to actually close the scanner.
if (currentScannerCallable != null && currentScannerCallable.closed) {
// For closing we target that exact scanner (and not do replica fallback like in
// the case of normal reads)
if (LOG.isDebugEnabled()) {
LOG.debug("Closing scanner " + currentScannerCallable.scannerId);
}
Result[] r = currentScannerCallable.call(timeout);
currentScannerCallable = null;
return r;
}
// We need to do the following:
// 1. When a scan goes out to a certain replica (default or not), we need to
// continue to hit that until there is a failure. So store the last successfully invoked
// replica
// 2. We should close the "losing" scanners (scanners other than the ones we hear back
// from first)
//
RegionLocations rl =
RpcRetryingCallerWithReadReplicas.getRegionLocations(
true,
RegionReplicaUtil.DEFAULT_REPLICA_ID,
cConnection,
tableName,
currentScannerCallable.getRow());
// allocate a boundedcompletion pool of some multiple of number of replicas.
// We want to accomodate some RPCs for redundant replica scans (but are still in progress)
BoundedCompletionService<Pair<Result[], ScannerCallable>> cs =
new BoundedCompletionService<Pair<Result[], ScannerCallable>>(pool, rl.size() * 5);
List<ExecutionException> exceptions = null;
int submitted = 0, completed = 0;
AtomicBoolean done = new AtomicBoolean(false);
replicaSwitched.set(false);
// submit call for the primary replica.
submitted += addCallsForCurrentReplica(cs, rl);
try {
// wait for the timeout to see whether the primary responds back
Future<Pair<Result[], ScannerCallable>> f =
cs.poll(timeBeforeReplicas, TimeUnit.MICROSECONDS); // Yes, microseconds
if (f != null) {
Pair<Result[], ScannerCallable> r = f.get();
if (r != null && r.getSecond() != null) {
updateCurrentlyServingReplica(r.getSecond(), r.getFirst(), done, pool);
}
return r == null ? null : r.getFirst(); // great we got a response
}
} catch (ExecutionException e) {
// the primary call failed with RetriesExhaustedException or DoNotRetryIOException
// but the secondaries might still succeed. Continue on the replica RPCs.
exceptions = new ArrayList<ExecutionException>(rl.size());
exceptions.add(e);
completed++;
} catch (CancellationException e) {
throw new InterruptedIOException(e.getMessage());
} catch (InterruptedException e) {
throw new InterruptedIOException(e.getMessage());
}
// submit call for the all of the secondaries at once
// TODO: this may be an overkill for large region replication
submitted += addCallsForOtherReplicas(cs, rl, 0, rl.size() - 1);
try {
while (completed < submitted) {
try {
Future<Pair<Result[], ScannerCallable>> f = cs.take();
Pair<Result[], ScannerCallable> r = f.get();
if (r != null && r.getSecond() != null) {
updateCurrentlyServingReplica(r.getSecond(), r.getFirst(), done, pool);
}
return r == null ? null : r.getFirst(); // great we got an answer
} catch (ExecutionException e) {
// if not cancel or interrupt, wait until all RPC's are done
// one of the tasks failed. Save the exception for later.
if (exceptions == null) exceptions = new ArrayList<ExecutionException>(rl.size());
exceptions.add(e);
completed++;
}
}
} catch (CancellationException e) {
throw new InterruptedIOException(e.getMessage());
} catch (InterruptedException e) {
throw new InterruptedIOException(e.getMessage());
} finally {
// We get there because we were interrupted or because one or more of the
// calls succeeded or failed. In all case, we stop all our tasks.
cs.cancelAll(true);
}
if (exceptions != null && !exceptions.isEmpty()) {
RpcRetryingCallerWithReadReplicas.throwEnrichedException(
exceptions.get(0), retries); // just rethrow the first exception for now.
}
return null; // unreachable
}
/**
* @param args
* @throws Exception
*/
public static void main(String[] args) {
ExecutorService executor = Executors.newFixedThreadPool(10);
// ThreadPoolExecutor executor = Executors.newFixedThreadPool(10);
Callable<Long> worker =
new Callable<Long>() {
public Long call() throws Exception {
long result = 0L;
System.out.println("working...");
while (true) {
if (Thread.currentThread().isInterrupted()) {
System.out.println("canceled...!");
// Thread.currentThread().interrupt();
break;
}
// Thread.sleep(1000); // simulates work
result++;
System.out.println("step " + result + "...");
if (result == Long.MAX_VALUE) {
break;
}
}
return result;
}
};
int startCount = Thread.activeCount();
Future<Long> submit1 = executor.submit(worker);
Future<Long> submit2 = executor.submit(worker);
int middleCount = Thread.activeCount();
try {
Thread.sleep(500);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
submit1.cancel(true);
submit2.cancel(true);
System.out.println("Canceled! " + submit1.isCancelled());
System.out.println("Done! " + submit1.isDone());
try {
System.out.println("Get! " + submit1.get());
} catch (CancellationException e1) {
// TODO Auto-generated catch block
// e1.printStackTrace();
System.out.println("ERROR: " + e1.getMessage());
} catch (Exception e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
int lastCount = Thread.activeCount();
System.out.println("Count: ");
System.out.println(startCount);
System.out.println(middleCount);
System.out.println(lastCount);
try {
Thread.sleep(5000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
executor.shutdown();
System.out.println("last count: " + Thread.activeCount());
}
