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Camunda 7 Keycloak Identity Provider Plugin including all transitive dependencies
/*
* ====================================================================
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* .
*
*/
package org.apache.hc.core5.http.nio.support;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.List;
import java.util.concurrent.atomic.AtomicReference;
import org.apache.hc.core5.function.Callback;
import org.apache.hc.core5.http.EntityDetails;
import org.apache.hc.core5.http.Header;
import org.apache.hc.core5.http.HttpException;
import org.apache.hc.core5.http.HttpRequest;
import org.apache.hc.core5.http.HttpResponse;
import org.apache.hc.core5.http.nio.AsyncDataConsumer;
import org.apache.hc.core5.http.nio.AsyncEntityProducer;
import org.apache.hc.core5.http.nio.AsyncFilterChain;
import org.apache.hc.core5.http.nio.AsyncPushProducer;
import org.apache.hc.core5.http.nio.AsyncResponseProducer;
import org.apache.hc.core5.http.nio.AsyncServerExchangeHandler;
import org.apache.hc.core5.http.nio.CapacityChannel;
import org.apache.hc.core5.http.nio.DataStreamChannel;
import org.apache.hc.core5.http.nio.HandlerFactory;
import org.apache.hc.core5.http.nio.ResponseChannel;
import org.apache.hc.core5.http.protocol.HttpContext;
import org.apache.hc.core5.util.Args;
import org.apache.hc.core5.util.Asserts;
/**
* Factory for {@link AsyncServerExchangeHandler} instances that delegate request processing
* to a {@link AsyncServerFilterChainElement}.
*
* @since 5.0
*/
public final class AsyncServerFilterChainExchangeHandlerFactory implements HandlerFactory {
private final AsyncServerFilterChainElement filterChain;
private final Callback exceptionCallback;
public AsyncServerFilterChainExchangeHandlerFactory(final AsyncServerFilterChainElement filterChain,
final Callback exceptionCallback) {
this.filterChain = Args.notNull(filterChain, "Filter chain");
this.exceptionCallback = exceptionCallback;
}
public AsyncServerFilterChainExchangeHandlerFactory(final AsyncServerFilterChainElement filterChain) {
this(filterChain, null);
}
@Override
public AsyncServerExchangeHandler create(final HttpRequest request, final HttpContext context) throws HttpException {
return new AsyncServerExchangeHandler() {
private final AtomicReference dataConsumerRef = new AtomicReference<>();
private final AtomicReference responseProducerRef = new AtomicReference<>();
@Override
public void handleRequest(
final HttpRequest request,
final EntityDetails entityDetails,
final ResponseChannel responseChannel,
final HttpContext context) throws HttpException, IOException {
dataConsumerRef.set(filterChain.handle(request, entityDetails, context, new AsyncFilterChain.ResponseTrigger() {
@Override
public void sendInformation(
final HttpResponse response) throws HttpException, IOException {
responseChannel.sendInformation(response, context);
}
@Override
public void submitResponse(
final HttpResponse response,
final AsyncEntityProducer entityProducer) throws HttpException, IOException {
final AsyncResponseProducer responseProducer = new BasicResponseProducer(response, entityProducer);
responseProducerRef.set(responseProducer);
responseProducer.sendResponse(responseChannel, context);
}
@Override
public void pushPromise(final HttpRequest promise, final AsyncPushProducer responseProducer) throws HttpException, IOException {
responseChannel.pushPromise(promise, responseProducer, context);
}
}));
}
@Override
public void failed(final Exception cause) {
if (exceptionCallback != null) {
exceptionCallback.execute(cause);
}
final AsyncResponseProducer handler = responseProducerRef.get();
if (handler != null) {
handler.failed(cause);
}
}
@Override
public void updateCapacity(final CapacityChannel capacityChannel) throws IOException {
final AsyncDataConsumer dataConsumer = dataConsumerRef.get();
if (dataConsumer != null) {
dataConsumer.updateCapacity(capacityChannel);
} else {
capacityChannel.update(Integer.MAX_VALUE);
}
}
@Override
public void consume(final ByteBuffer src) throws IOException {
final AsyncDataConsumer dataConsumer = dataConsumerRef.get();
if (dataConsumer != null) {
dataConsumer.consume(src);
}
}
@Override
public void streamEnd(final List trailers) throws HttpException, IOException {
final AsyncDataConsumer dataConsumer = dataConsumerRef.get();
if (dataConsumer != null) {
dataConsumer.streamEnd(trailers);
}
}
@Override
public int available() {
final AsyncResponseProducer responseProducer = responseProducerRef.get();
Asserts.notNull(responseProducer, "Response producer");
return responseProducer.available();
}
@Override
public void produce(final DataStreamChannel channel) throws IOException {
final AsyncResponseProducer responseProducer = responseProducerRef.get();
Asserts.notNull(responseProducer, "Response producer");
responseProducer.produce(channel);
}
@Override
public void releaseResources() {
final AsyncDataConsumer dataConsumer = dataConsumerRef.getAndSet(null);
if (dataConsumer != null) {
dataConsumer.releaseResources();
}
final AsyncResponseProducer responseProducer = responseProducerRef.getAndSet(null);
if (responseProducer != null) {
responseProducer.releaseResources();
}
}
};
}
}