package org.jboss.resteasy.core.interception.jaxrs;
import java.io.IOException;
import java.io.OutputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Enumeration;
import java.util.concurrent.CompletionException;
import java.util.concurrent.CompletionStage;
import java.util.function.Consumer;
import java.util.function.Supplier;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.ext.MessageBodyWriter;
import javax.ws.rs.ext.WriterInterceptor;
import org.jboss.resteasy.core.NoMessageBodyWriterFoundFailure;
import org.jboss.resteasy.core.providerfactory.ResteasyProviderFactoryImpl;
import org.jboss.resteasy.spi.AsyncMessageBodyWriter;
import org.jboss.resteasy.spi.AsyncOutputStream;
import org.jboss.resteasy.spi.HttpRequest;
import org.jboss.resteasy.spi.ResteasyProviderFactory;
import org.jboss.resteasy.tracing.RESTEasyTracingLogger;
@SuppressWarnings("rawtypes")
public class ServerWriterInterceptorContext extends AbstractWriterInterceptorContext
{
private HttpRequest request;
private Consumer<Throwable> onWriteComplete;
public ServerWriterInterceptorContext(final WriterInterceptor[] interceptors, final ResteasyProviderFactory providerFactory,
final Object entity, final Class type, final Type genericType, final Annotation[] annotations,
final MediaType mediaType, final MultivaluedMap<String, Object> headers,
final OutputStream outputStream,
final HttpRequest request, final Consumer<Throwable> onWriteComplete)
{
super(interceptors, annotations, entity, genericType, mediaType, type, outputStream, providerFactory, headers, RESTEasyTracingLogger.getInstance(request));
this.request = request;
this.onWriteComplete = onWriteComplete;
}
@SuppressWarnings(value = "unchecked")
@Override
protected MessageBodyWriter resolveWriter()
{
return ((ResteasyProviderFactoryImpl)providerFactory).getServerMessageBodyWriter(
type, genericType, annotations, mediaType, tracingLogger);
}
@Override
void throwWriterNotFoundException()
{
throw new NoMessageBodyWriterFoundFailure(type, mediaType);
}
@Override
public Object getProperty(String name)
{
return request.getAttribute(name);
}
@Override
public CompletionStage<Void> getStarted()
{
return aroundWriteTo(() -> super.getStarted());
}
@SuppressWarnings(value = "unchecked")
protected CompletionStage<Void> writeTo(MessageBodyWriter writer) throws IOException
{
return request.getAsyncContext().executeBlockingIo(() -> writer.writeTo(entity, type, genericType, annotations, mediaType, headers, outputStream),
interceptors != null && interceptors.length > 0);
}
@SuppressWarnings(value = "unchecked")
protected CompletionStage<Void> writeTo(AsyncMessageBodyWriter writer)
{
return request.getAsyncContext().executeAsyncIo(
writer.asyncWriteTo(entity, type, genericType, annotations, mediaType, headers, (AsyncOutputStream)outputStream));
}
private CompletionStage<Void> aroundWriteTo(Supplier<CompletionStage<Void>> ret)
{
boolean startedSuspended = request.getAsyncContext().isSuspended();
return ret.get().whenComplete((v, t) -> {
if(t instanceof CompletionException)
t = t.getCause();
onWriteComplete.accept(t);
if(!startedSuspended && request.getAsyncContext().isSuspended()) {
request.getAsyncContext().complete();
}
});
}
@Override
public Collection<String> getPropertyNames()
{
ArrayList<String> names = new ArrayList<String>();
Enumeration<String> enames = request.getAttributeNames();
while (enames.hasMoreElements())
{
names.add(enames.nextElement());
}
return names;
}
@Override
public void setProperty(String name, Object object)
{
if (object == null)
{
request.removeAttribute(name);
}
else
{
request.setAttribute(name, object);
}
}
@Override
public void removeProperty(String name)
{
request.removeAttribute(name);
}
}