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/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 2012-2013 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* http://glassfish.java.net/public/CDDL+GPL_1_1.html
* or packager/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
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*/
package org.glassfish.jersey.server;
import java.io.IOException;
import java.io.OutputStream;
import java.net.URI;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.Date;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Queue;
import java.util.concurrent.ConcurrentLinkedQueue;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.ws.rs.HttpMethod;
import javax.ws.rs.NotFoundException;
import javax.ws.rs.ServiceUnavailableException;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.container.AsyncResponse;
import javax.ws.rs.container.CompletionCallback;
import javax.ws.rs.container.ConnectionCallback;
import javax.ws.rs.container.TimeoutHandler;
import javax.ws.rs.core.Configuration;
import javax.ws.rs.core.HttpHeaders;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.core.Response;
import javax.ws.rs.ext.ExceptionMapper;
import javax.inject.Inject;
import javax.inject.Provider;
import org.glassfish.jersey.internal.inject.Injections;
import org.glassfish.jersey.internal.util.Closure;
import org.glassfish.jersey.internal.util.Producer;
import org.glassfish.jersey.internal.util.collection.Ref;
import org.glassfish.jersey.internal.util.collection.Refs;
import org.glassfish.jersey.internal.util.collection.Value;
import org.glassfish.jersey.message.internal.HeaderValueException;
import org.glassfish.jersey.message.internal.OutboundMessageContext;
import org.glassfish.jersey.message.internal.TracingLogger;
import org.glassfish.jersey.process.internal.ExecutorsFactory;
import org.glassfish.jersey.process.internal.RequestScope;
import org.glassfish.jersey.process.internal.Stage;
import org.glassfish.jersey.process.internal.Stages;
import org.glassfish.jersey.server.internal.ServerTraceEvent;
import org.glassfish.jersey.server.internal.BackgroundScheduler;
import org.glassfish.jersey.server.internal.LocalizationMessages;
import org.glassfish.jersey.server.internal.monitoring.RequestEventBuilder;
import org.glassfish.jersey.server.internal.monitoring.RequestEventImpl;
import org.glassfish.jersey.server.internal.process.AsyncContext;
import org.glassfish.jersey.server.internal.process.Endpoint;
import org.glassfish.jersey.server.internal.process.MappableException;
import org.glassfish.jersey.server.internal.process.RespondingContext;
import org.glassfish.jersey.server.internal.routing.UriRoutingContext;
import org.glassfish.jersey.server.monitoring.ApplicationEventListener;
import org.glassfish.jersey.server.monitoring.RequestEvent;
import org.glassfish.jersey.server.monitoring.RequestEventListener;
import org.glassfish.jersey.server.spi.ContainerResponseWriter;
import org.glassfish.jersey.spi.ExceptionMappers;
import static org.glassfish.jersey.server.internal.process.AsyncContext.State.COMPLETED;
import static org.glassfish.jersey.server.internal.process.AsyncContext.State.RESUMED;
import static org.glassfish.jersey.server.internal.process.AsyncContext.State.RUNNING;
import static org.glassfish.jersey.server.internal.process.AsyncContext.State.SUSPENDED;
import org.glassfish.hk2.api.ServiceLocator;
import com.google.common.base.Preconditions;
/**
* Server-side request processing runtime.
*
* @author Marek Potociar (marek.potociar at oracle.com)
*/
class ServerRuntime {
private final Stage requestProcessingRoot;
private final ServiceLocator locator;
private final ScheduledExecutorService backgroundScheduler;
private final RequestScope requestScope;
private final ExceptionMappers exceptionMappers;
private final Provider respondingContextProvider;
private final Provider closeableServiceProvider;
private final Provider>> asyncContextFactoryProvider;
private final Provider asyncContextProvider;
private final Provider uriRoutingContextProvider;
private final ExecutorsFactory asyncExecutorsFactory;
private final ApplicationEventListener applicationEventListener;
private final Configuration configuration;
private final TracingConfig tracingConfig;
private final TracingLogger.Level tracingThreshold;
/**
* Server-side request processing runtime builder.
*/
public static class Builder {
@Inject
private ServiceLocator locator;
@Inject
@BackgroundScheduler
private ScheduledExecutorService backgroundScheduler;
@Inject
private RequestScope requestScope;
@Inject
private ExceptionMappers exceptionMappers;
@Inject
private Provider respondingContextProvider;
@Inject
private Provider closeableServiceProvider;
@Inject
private Provider>> asyncContextRefProvider;
@Inject
private Provider asyncContextProvider;
@Inject
private Provider uriRoutingContextProvider;
@Inject
private ExecutorsFactory asyncExecutorsFactory;
@Inject
private Configuration configuration;
/**
* Create new server-side request processing runtime.
*
* @param requestProcessingRoot application request processing root stage.
* @param eventListener Application event listener registered for this runtime.
* @return new server-side request processing runtime.
*/
public ServerRuntime build(final Stage requestProcessingRoot, ApplicationEventListener eventListener) {
return new ServerRuntime(
requestProcessingRoot,
locator,
backgroundScheduler,
requestScope,
exceptionMappers,
respondingContextProvider,
closeableServiceProvider,
asyncContextRefProvider,
asyncContextProvider,
uriRoutingContextProvider,
asyncExecutorsFactory,
eventListener,
configuration);
}
}
private ServerRuntime(Stage requestProcessingRoot,
ServiceLocator locator,
ScheduledExecutorService backgroundScheduler,
RequestScope requestScope,
ExceptionMappers exceptionMappers,
Provider respondingContextProvider,
Provider closeableServiceProvider,
Provider>> asyncContextFactoryProvider,
Provider asyncContextProvider,
Provider uriRoutingContextProvider,
ExecutorsFactory asyncExecutorsFactory,
ApplicationEventListener applicationEventListener,
Configuration configuration) {
this.requestProcessingRoot = requestProcessingRoot;
this.locator = locator;
this.backgroundScheduler = backgroundScheduler;
this.requestScope = requestScope;
this.exceptionMappers = exceptionMappers;
this.respondingContextProvider = respondingContextProvider;
this.closeableServiceProvider = closeableServiceProvider;
this.asyncContextFactoryProvider = asyncContextFactoryProvider;
this.asyncContextProvider = asyncContextProvider;
this.uriRoutingContextProvider = uriRoutingContextProvider;
this.asyncExecutorsFactory = asyncExecutorsFactory;
this.applicationEventListener = applicationEventListener;
this.configuration = configuration;
this.tracingConfig = TracingUtils.getTracingConfig(configuration);
this.tracingThreshold = TracingUtils.getTracingThreshold(configuration);
}
/**
* Process a container request.
*
* @param request request to be processed.
*/
public void process(final ContainerRequest request) {
initRequestEventListeners(request);
TracingUtils.initTracingSupport(tracingConfig, tracingThreshold, request);
try {
request.checkState();
requestScope.runInScope(new Runnable() {
@Override
public void run() {
TracingUtils.logStart(request);
final Responder responder = new Responder(request, ServerRuntime.this);
final AsyncResponderHolder asyncResponderHolder = new AsyncResponderHolder(
responder, requestScope.referenceCurrent());
try {
final Ref endpointRef = Refs.emptyRef();
final ContainerRequest data = Stages.process(request, requestProcessingRoot, endpointRef);
final Endpoint endpoint = endpointRef.get();
if (endpoint == null) {
// not found
throw new NotFoundException();
}
asyncContextFactoryProvider.get().set(asyncResponderHolder);
final ContainerResponse response = endpoint.apply(data);
if (!asyncResponderHolder.isAsync()) {
responder.process(response);
}
} catch (Throwable throwable) {
responder.process(throwable);
} finally {
asyncResponderHolder.release();
}
}
});
} finally {
request.triggerEvent(RequestEvent.Type.FINISHED);
}
}
private void initRequestEventListeners(ContainerRequest request) {
if (applicationEventListener != null) {
final RequestEventBuilder requestEventBuilder = new RequestEventImpl.Builder().setContainerRequest(request);
final RequestEventListener requestEventEventListener =
applicationEventListener.onRequest(requestEventBuilder.build(RequestEvent.Type.START));
if (requestEventEventListener != null) {
request.setRequestEventListener(requestEventEventListener, requestEventBuilder);
}
}
}
/**
* Get the Jersey server runtime background scheduler.
*
* @return server runtime background scheduler.
* @see BackgroundScheduler
*/
ScheduledExecutorService getBackgroundScheduler() {
return backgroundScheduler;
}
private static class AsyncResponderHolder implements Value {
private final Responder responder;
private final RequestScope.Instance scopeInstance;
private volatile AsyncResponder asyncResponder;
private AsyncResponderHolder(Responder responder,
RequestScope.Instance scopeInstance) {
this.responder = responder;
this.scopeInstance = scopeInstance;
}
@Override
public AsyncResponder get() {
final AsyncResponder ar = new AsyncResponder(responder, scopeInstance);
asyncResponder = ar;
return ar;
}
public boolean isAsync() {
final AsyncResponder ar = asyncResponder;
return ar != null && !ar.isRunning();
}
public void release() {
if (asyncResponder == null) {
scopeInstance.release();
}
}
}
private static class Responder {
private static final Logger LOGGER = Logger.getLogger(Responder.class.getName());
private final ContainerRequest request;
private final ServerRuntime runtime;
private final CompletionCallbackRunner completionCallbackRunner = new CompletionCallbackRunner();
private final ConnectionCallbackRunner connectionCallbackRunner = new ConnectionCallbackRunner();
private final TracingLogger tracingLogger;
public Responder(final ContainerRequest request, final ServerRuntime runtime) {
this.request = request;
this.runtime = runtime;
this.tracingLogger = TracingLogger.getInstance(request);
}
public void process(ContainerResponse response) {
request.getRequestEventBuilder().setContainerResponse(response);
response = processResponse(response);
release(response);
}
private ContainerResponse processResponse(ContainerResponse response) {
Stage respondingRoot = runtime.respondingContextProvider.get().createRespondingRoot();
if (respondingRoot != null) {
response = Stages.process(response, respondingRoot);
}
writeResponse(response);
// no-exception zone
// the methods below are guaranteed to not throw any exceptions
completionCallbackRunner.onComplete(null);
return response;
}
public void process(Throwable throwable) {
request.getRequestEventBuilder().setException(throwable, RequestEvent.ExceptionCause.ORIGINAL);
request.triggerEvent(RequestEvent.Type.ON_EXCEPTION);
ContainerResponse response = null;
try {
final Response exceptionResponse = mapException(throwable);
try {
try {
response = convertResponse(exceptionResponse);
request.getRequestEventBuilder().setContainerResponse(response).setResponseSuccessfullyMapped(true);
} finally {
request.triggerEvent(RequestEvent.Type.EXCEPTION_MAPPING_FINISHED);
}
processResponse(response);
} catch (Throwable respError) {
LOGGER.log(Level.SEVERE, LocalizationMessages.ERROR_PROCESSING_RESPONSE_FROM_ALREADY_MAPPED_EXCEPTION());
request.getRequestEventBuilder().setException(respError, RequestEvent.ExceptionCause.MAPPED_RESPONSE);
request.triggerEvent(RequestEvent.Type.ON_EXCEPTION);
throw respError;
}
} catch (Throwable responseError) {
if (throwable != responseError
&& !(throwable instanceof MappableException && throwable.getCause() == responseError)) {
LOGGER.log(Level.FINE, LocalizationMessages.ERROR_EXCEPTION_MAPPING_ORIGINAL_EXCEPTION(), throwable);
}
LOGGER.log(Level.FINE, LocalizationMessages.ERROR_EXCEPTION_MAPPING_THROWN_TO_CONTAINER(), responseError);
try {
request.getResponseWriter().failure(responseError);
} finally {
completionCallbackRunner.onComplete(responseError);
}
} finally {
release(response);
}
}
private ContainerResponse convertResponse(Response exceptionResponse) {
final ContainerResponse containerResponse = new ContainerResponse(request, exceptionResponse);
containerResponse.setMappedFromException(true);
return containerResponse;
}
@SuppressWarnings("unchecked")
private Response mapException(final Throwable originalThrowable) throws Throwable {
Throwable throwable = originalThrowable;
boolean inMappable = false;
boolean mappingNotFound = false;
do {
if (throwable instanceof MappableException) {
inMappable = true;
} else if (inMappable || throwable instanceof WebApplicationException) {
Response waeResponse = null;
Throwable cause = throwable;
if (throwable instanceof WebApplicationException) {
final WebApplicationException webApplicationException = (WebApplicationException) throwable;
cause = webApplicationException.getCause();
waeResponse = webApplicationException.getResponse();
if (waeResponse.hasEntity()) {
return waeResponse;
}
}
// Log cause of WebApplicationException.
if (cause != null) {
LOGGER.log(Level.WARNING, LocalizationMessages.WEB_APPLICATION_EXCEPTION_CAUSE(), cause);
}
final long timestamp = tracingLogger.timestamp(ServerTraceEvent.EXCEPTION_MAPPING);
ExceptionMapper mapper = runtime.exceptionMappers.findMapping(throwable);
if (mapper != null) {
request.getRequestEventBuilder().setExceptionMapper(mapper);
request.triggerEvent(RequestEvent.Type.EXCEPTION_MAPPER_FOUND);
try {
final Response mappedResponse = mapper.toResponse(throwable);
if (tracingLogger.isLogEnabled(ServerTraceEvent.EXCEPTION_MAPPING)) {
tracingLogger.logDuration(ServerTraceEvent.EXCEPTION_MAPPING,
timestamp, mapper, throwable, throwable.getLocalizedMessage(),
mappedResponse != null ? mappedResponse.getStatusInfo() : "-no-response-");
}
if (mappedResponse != null) {
// response successfully mapped
return mappedResponse;
} else {
return Response.noContent().build();
}
} catch (Throwable mapperThrowable) {
// spec: If the exception mapping provider throws an exception while creating a Response
// then return a server error (status code 500) response to the client.
LOGGER.log(Level.SEVERE, LocalizationMessages.EXCEPTION_MAPPER_THROWS_EXCEPTION(mapper.getClass()),
mapperThrowable);
LOGGER.log(Level.SEVERE, LocalizationMessages.EXCEPTION_MAPPER_FAILED_FOR_EXCEPTION(), throwable);
return Response.serverError().build();
}
}
if (waeResponse != null) {
return waeResponse;
}
mappingNotFound = true;
}
// internal mapping
if (throwable instanceof HeaderValueException) {
if (((HeaderValueException) throwable).getContext() == HeaderValueException.Context.INBOUND) {
return Response.status(Response.Status.BAD_REQUEST).build();
}
}
if (!inMappable || mappingNotFound) {
// user failures (thrown from Resource methods or provider methods)
// spec: Unchecked exceptions and errors that have not been mapped MUST be re-thrown and allowed to
// propagate to the underlying container.
// not logged on this level.
throw throwable;
}
throwable = throwable.getCause();
} while (throwable != null);
// jersey failures (not thrown from Resource methods or provider methods) -> rethrow
throw originalThrowable;
}
/**
* Converts the relative URI to absolute in the Location response header
*
* Checks the response headers for presence of the Location header.
* If the Location header is present and contains a relative URI,
* it must be converted to the absolute one.
* For this purpose, the baseUri from the request is used.
*
* Changes the content of a mutable multivalued map returned by
* {@link org.glassfish.jersey.message.internal.OutboundMessageContext#getHeaders() OutboundMessageContext.getHeaders()}
*
* @param response ContainerResponse object ready to be streamed
*/
@SuppressWarnings("unchecked")
private void absolutizeLocationHeaderUri(ContainerResponse response) {
if (response == null || response.getRequestContext() == null || response.getRequestContext().getBaseUri() == null) {
return;
}
URI responseLocation = response.getLocation();
if (responseLocation != null && !responseLocation.isAbsolute()) {
URI baseUri = response.getRequestContext().getBaseUri();
URI absoluteUri = baseUri.resolve(responseLocation);
// Get the mutable message headers multivalued map
MultivaluedMap headers = response.getWrappedMessageContext().getHeaders();
List locations = (List) headers.get(HttpHeaders.LOCATION);
// according to RFC2616 (HTTP/1.1), this field can contain one single URI
locations.set(0, absoluteUri);
}
}
private ContainerResponse writeResponse(final ContainerResponse response) {
final ContainerResponseWriter writer = request.getResponseWriter();
if (!response.hasEntity()) {
absolutizeLocationHeaderUri(response);
tracingLogger.log(ServerTraceEvent.FINISHED, response.getStatusInfo());
tracingLogger.flush(response.getHeaders());
writer.writeResponseStatusAndHeaders(0, response);
setWrittenResponse(response);
return response;
}
final Object entity = response.getEntity();
boolean skipFinally = false;
final boolean isHead = request.getMethod().equals(HttpMethod.HEAD);
try {
response.setStreamProvider(new OutboundMessageContext.StreamProvider() {
@Override
public OutputStream getOutputStream(int contentLength) throws IOException {
absolutizeLocationHeaderUri(response);
final OutputStream outputStream = writer.writeResponseStatusAndHeaders(contentLength, response);
return isHead ? null : outputStream;
}
});
if ((writer.enableResponseBuffering() || isHead) && !response.isChunked()) {
response.enableBuffering(runtime.configuration);
}
try {
response.setEntityStream(request.getWorkers().writeTo(
entity,
entity.getClass(),
response.getEntityType(),
response.getEntityAnnotations(),
response.getMediaType(),
response.getHeaders(),
request.getPropertiesDelegate(),
response.getEntityStream(),
runtime.uriRoutingContextProvider.get().getBoundWriterInterceptors()));
} catch (MappableException mpe) {
if (mpe.getCause() instanceof IOException) {
connectionCallbackRunner.onDisconnect(runtime.asyncContextProvider.get());
}
throw mpe;
} finally {
tracingLogger.log(ServerTraceEvent.FINISHED, response.getStatusInfo());
tracingLogger.flush(response.getHeaders());
}
setWrittenResponse(response);
} catch (Throwable ex) {
if (response.isCommitted()) {
/**
* We're done with processing here. There's nothing we can do about the exception so
* let's just log it.
*/
LOGGER.log(Level.SEVERE, LocalizationMessages.ERROR_WRITING_RESPONSE_ENTITY(), ex);
} else {
skipFinally = true;
if (ex instanceof RuntimeException) {
throw (RuntimeException) ex;
} else {
throw new MappableException(ex);
}
}
} finally {
if (!skipFinally) {
if (response.isChunked()) {
try {
response.commitStream();
} catch (Exception e) {
LOGGER.log(Level.SEVERE, LocalizationMessages.ERROR_COMMITTING_OUTPUT_STREAM(), e);
}
try {
((ChunkedOutput) entity).setContext(
request,
response,
connectionCallbackRunner,
runtime.asyncContextProvider,
runtime.uriRoutingContextProvider.get());
} catch (IOException ex) {
LOGGER.log(Level.SEVERE, LocalizationMessages.ERROR_WRITING_RESPONSE_ENTITY_CHUNK(), ex);
}
// suspend the writer indefinitely (passing null timeout handler is ok in such case).
writer.suspend(0, TimeUnit.SECONDS, null);
// TODO what to do if we detect that the writer has already been suspended? override the timeout value?
} else {
try {
// the response must be closed here instead of just flushed or committed. Some
// output streams writes out bytes only on close (for example GZipOutputStream).
response.close();
} catch (Exception e) {
LOGGER.log(Level.SEVERE, LocalizationMessages.ERROR_CLOSING_COMMIT_OUTPUT_STREAM(), e);
}
}
}
}
return response;
}
private void setWrittenResponse(ContainerResponse response) {
request.getRequestEventBuilder().setContainerResponse(response);
request.getRequestEventBuilder().setSuccess(response.getStatus() < 400);
request.getRequestEventBuilder().setResponseWritten(true);
}
private void release(ContainerResponse responseContext) {
try {
runtime.closeableServiceProvider.get().close();
// Commit the container response writer if not in chunked mode
// responseContext may be null in case the request processing was cancelled.
if (responseContext != null && !responseContext.isChunked()) {
// responseContext.commitStream();
responseContext.close();
}
} catch (Throwable throwable) {
// TODO L10N
LOGGER.log(Level.WARNING, "Attempt to release single request processing resources has failed.", throwable);
}
}
}
private static class AsyncResponder implements AsyncContext, ContainerResponseWriter.TimeoutHandler, CompletionCallback {
private static final Logger LOGGER = Logger.getLogger(AsyncResponder.class.getName());
private static final TimeoutHandler DEFAULT_TIMEOUT_HANDLER = new TimeoutHandler() {
@Override
public void handleTimeout(AsyncResponse asyncResponse) {
throw new ServiceUnavailableException();
}
};
private final Object stateLock = new Object();
private State state = RUNNING;
private boolean cancelled = false;
private final Responder responder;
private final RequestScope.Instance scopeInstance;
private volatile TimeoutHandler timeoutHandler = DEFAULT_TIMEOUT_HANDLER;
private final List> callbackRunners;
public AsyncResponder(final Responder responder,
final RequestScope.Instance scopeInstance) {
this.responder = responder;
this.scopeInstance = scopeInstance;
this.callbackRunners = Collections.unmodifiableList(Arrays.asList(
responder.completionCallbackRunner, responder.connectionCallbackRunner));
responder.completionCallbackRunner.register(this);
}
@Override
public void onTimeout(ContainerResponseWriter responseWriter) {
final TimeoutHandler handler = timeoutHandler;
try {
synchronized (stateLock) {
if (state == SUSPENDED) {
handler.handleTimeout(this);
}
}
} catch (Throwable throwable) {
try {
resume(throwable);
} catch (IllegalStateException ignored) {
// TODO remove the try-catch block once the resume API changes.
// ignore the exception - already resumed by someone else
}
}
}
@Override
public void onComplete(final Throwable throwable) {
synchronized (stateLock) {
state = COMPLETED;
}
}
@Override
public void invokeManaged(final Producer producer) {
responder.runtime.asyncExecutorsFactory.getRequestingExecutor(responder.request).submit(new Runnable() {
@Override
public void run() {
responder.runtime.requestScope.runInScope(scopeInstance, new Runnable() {
@Override
public void run() {
try {
final Response response = producer.call();
if (response != null) {
resume(response);
}
} catch (Throwable t) {
resume(t);
}
}
});
}
});
}
@Override
public boolean suspend() {
synchronized (stateLock) {
if (state == RUNNING) {
state = SUSPENDED;
responder.request.getResponseWriter().suspend(AsyncResponse.NO_TIMEOUT, TimeUnit.SECONDS, this);
return true;
}
}
return false;
}
@Override
public boolean resume(final Object response) throws IllegalStateException {
return resume(new Runnable() {
@Override
public void run() {
try {
final Response jaxrsResponse = toJaxrsResponse(response);
responder.process(new ContainerResponse(responder.request, jaxrsResponse));
} catch (Throwable t) {
responder.process(t);
}
}
});
}
private Response toJaxrsResponse(final Object response) {
if (response instanceof Response) {
return (Response) response;
} else {
return Response.ok(response).build();
}
}
@Override
public boolean resume(final Throwable error) throws IllegalStateException {
return resume(new Runnable() {
@Override
public void run() {
try {
responder.process(new MappableException(error));
} catch (final Throwable error) {
// Ignore the exception - already resumed but may be rethrown by ContainerResponseWriter#failure.
}
}
});
}
private boolean resume(Runnable handler) {
synchronized (stateLock) {
if (state != SUSPENDED) {
return false;
}
state = RESUMED;
}
responder.runtime.requestScope.runInScope(scopeInstance, handler);
return true;
}
@Override
public boolean cancel() {
return cancel(new Value() {
@Override
public Response get() {
return Response.status(Response.Status.SERVICE_UNAVAILABLE).build();
}
});
}
@Override
public boolean cancel(final int retryAfter) {
return cancel(new Value() {
@Override
public Response get() {
return Response
.status(Response.Status.SERVICE_UNAVAILABLE)
.header(HttpHeaders.RETRY_AFTER, retryAfter)
.build();
}
});
}
@Override
public boolean cancel(final Date retryAfter) {
return cancel(new Value() {
@Override
public Response get() {
return Response
.status(Response.Status.SERVICE_UNAVAILABLE)
.header(HttpHeaders.RETRY_AFTER, retryAfter)
.build();
}
});
}
private boolean cancel(final Value responseValue) {
synchronized (stateLock) {
if (cancelled) {
return true;
}
if (state != SUSPENDED) {
return false;
}
state = RESUMED;
cancelled = true;
}
responder.runtime.requestScope.runInScope(scopeInstance, new Runnable() {
@Override
public void run() {
try {
final Response response = responseValue.get();
responder.process(new ContainerResponse(responder.request, response));
} catch (Throwable t) {
responder.process(t);
}
}
});
return true;
}
public boolean isRunning() {
synchronized (stateLock) {
return state == RUNNING;
}
}
@Override
public boolean isSuspended() {
synchronized (stateLock) {
return state == SUSPENDED;
}
}
@Override
public boolean isCancelled() {
synchronized (stateLock) {
return cancelled;
}
}
@Override
public boolean isDone() {
synchronized (stateLock) {
return state == COMPLETED;
}
}
@Override
public boolean setTimeout(long time, TimeUnit unit) {
try {
responder.request.getResponseWriter().setSuspendTimeout(time, unit);
return true;
} catch (IllegalStateException ex) {
LOGGER.log(Level.FINER, "Unable to set timeout on the AsyncResponse.", ex);
return false;
}
}
@Override
public void setTimeoutHandler(TimeoutHandler handler) {
timeoutHandler = handler;
}
@Override
public Collection> register(final Class callback) {
Preconditions.checkNotNull(callback, LocalizationMessages.PARAM_NULL("callback"));
return register(Injections.getOrCreate(responder.runtime.locator, callback));
}
@Override
public Map, Collection>> register(Class callback, Class... callbacks) {
Preconditions.checkNotNull(callback, LocalizationMessages.PARAM_NULL("callback"));
Preconditions.checkNotNull(callbacks, LocalizationMessages.CALLBACK_ARRAY_NULL());
for (final Class additionalCallback : callbacks) {
Preconditions.checkNotNull(additionalCallback, LocalizationMessages.CALLBACK_ARRAY_ELEMENT_NULL());
}
final Map, Collection>> results = new HashMap, Collection>>();
results.put(callback, register(callback));
for (Class c : callbacks) {
results.put(c, register(c));
}
return results;
}
@Override
public Collection> register(Object callback) {
Preconditions.checkNotNull(callback, LocalizationMessages.PARAM_NULL("callback"));
Collection> result = new LinkedList>();
for (AbstractCallbackRunner runner : callbackRunners) {
if (runner.supports(callback.getClass())) {
if (runner.register(callback)) {
result.add(runner.getCallbackContract());
}
}
}
return result;
}
@Override
public Map, Collection>> register(Object callback, Object... callbacks) {
Preconditions.checkNotNull(callback, LocalizationMessages.PARAM_NULL("callback"));
Preconditions.checkNotNull(callbacks, LocalizationMessages.CALLBACK_ARRAY_NULL());
for (final Object additionalCallback : callbacks) {
Preconditions.checkNotNull(additionalCallback, LocalizationMessages.CALLBACK_ARRAY_ELEMENT_NULL());
}
final Map, Collection>> results = new HashMap, Collection>>();
results.put(callback.getClass(), register(callback));
for (Object c : callbacks) {
results.put(c.getClass(), register(c));
}
return results;
}
}
private static abstract class AbstractCallbackRunner {
private final Queue callbacks = new ConcurrentLinkedQueue();
private final Logger logger;
protected AbstractCallbackRunner(Logger logger) {
this.logger = logger;
}
/**
* Return true if this callback runner supports the {@code callbackClass}.
*
* @param callbackClass Callback to be checked.
* @return True if this callback runner supports the {@code callbackClass}; false otherwise.
*/
public final boolean supports(Class callbackClass) {
return getCallbackContract().isAssignableFrom(callbackClass);
}
/**
* Get the callback contract supported by this callback runner.
*
* @return callback contract supported by this callback runner.
*/
public abstract Class getCallbackContract();
@SuppressWarnings("unchecked")
public boolean register(Object callback) {
return callbacks.offer((T) callback);
}
protected final void executeCallbacks(Closure invoker) {
for (T callback : callbacks) {
try {
invoker.invoke(callback);
} catch (Throwable t) {
logger.log(Level.WARNING, LocalizationMessages.ERROR_ASYNC_CALLBACK_FAILED(callback.getClass().getName()), t);
}
}
}
}
private static class CompletionCallbackRunner
extends AbstractCallbackRunner implements CompletionCallback {
private CompletionCallbackRunner() {
super(Logger.getLogger(CompletionCallbackRunner.class.getName()));
}
@Override
public Class getCallbackContract() {
return CompletionCallback.class;
}
@Override
public void onComplete(final Throwable throwable) {
executeCallbacks(new Closure() {
@Override
public void invoke(CompletionCallback callback) {
callback.onComplete(throwable);
}
});
}
}
/**
* Executor of {@link ConnectionCallback connection callbacks}.
*/
static class ConnectionCallbackRunner
extends AbstractCallbackRunner implements ConnectionCallback {
private ConnectionCallbackRunner() {
super(Logger.getLogger(ConnectionCallbackRunner.class.getName()));
}
@Override
public Class getCallbackContract() {
return ConnectionCallback.class;
}
@Override
public void onDisconnect(final AsyncResponse disconnected) {
executeCallbacks(new Closure() {
@Override
public void invoke(ConnectionCallback callback) {
callback.onDisconnect(disconnected);
}
});
}
}
}
