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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.http2.impl.nio;
import org.apache.hc.core5.annotation.Contract;
import org.apache.hc.core5.annotation.Internal;
import org.apache.hc.core5.annotation.ThreadingBehavior;
import org.apache.hc.core5.http.URIScheme;
import org.apache.hc.core5.http.impl.nio.HttpConnectionEventHandler;
import org.apache.hc.core5.http.impl.nio.ServerHttp1IOEventHandler;
import org.apache.hc.core5.http.impl.nio.ServerHttp1StreamDuplexerFactory;
import org.apache.hc.core5.http.nio.ssl.TlsStrategy;
import org.apache.hc.core5.http2.HttpVersionPolicy;
import org.apache.hc.core5.http2.ssl.ApplicationProtocol;
import org.apache.hc.core5.reactor.EndpointParameters;
import org.apache.hc.core5.reactor.IOEventHandlerFactory;
import org.apache.hc.core5.reactor.ProtocolIOSession;
import org.apache.hc.core5.util.Args;
import org.apache.hc.core5.util.Timeout;
/**
* Server I/O event starter that prepares I/O sessions for an initial protocol handshake.
* This class may return a different {@link org.apache.hc.core5.reactor.IOEventHandler}
* implementation based on the current HTTP version policy.
*
* @since 5.1
*/
@Contract(threading = ThreadingBehavior.IMMUTABLE_CONDITIONAL)
@Internal
public class ServerHttpProtocolNegotiationStarter implements IOEventHandlerFactory {
private final ServerHttp1StreamDuplexerFactory http1StreamHandlerFactory;
private final ServerH2StreamMultiplexerFactory http2StreamHandlerFactory;
private final HttpVersionPolicy versionPolicy;
private final TlsStrategy tlsStrategy;
private final Timeout handshakeTimeout;
public ServerHttpProtocolNegotiationStarter(
final ServerHttp1StreamDuplexerFactory http1StreamHandlerFactory,
final ServerH2StreamMultiplexerFactory http2StreamHandlerFactory,
final HttpVersionPolicy versionPolicy,
final TlsStrategy tlsStrategy,
final Timeout handshakeTimeout) {
this.http1StreamHandlerFactory = Args.notNull(http1StreamHandlerFactory, "HTTP/1.1 stream handler factory");
this.http2StreamHandlerFactory = Args.notNull(http2StreamHandlerFactory, "HTTP/2 stream handler factory");
this.versionPolicy = versionPolicy != null ? versionPolicy : HttpVersionPolicy.NEGOTIATE;
this.tlsStrategy = tlsStrategy;
this.handshakeTimeout = handshakeTimeout;
}
@Override
public HttpConnectionEventHandler createHandler(final ProtocolIOSession ioSession, final Object attachment) {
HttpVersionPolicy endpointPolicy = versionPolicy;
URIScheme uriScheme = URIScheme.HTTP;
if (attachment instanceof EndpointParameters) {
final EndpointParameters params = (EndpointParameters) attachment;
if (tlsStrategy != null && URIScheme.HTTPS.same(params.getScheme())) {
uriScheme = URIScheme.HTTPS;
tlsStrategy.upgrade(ioSession, params, params.getAttachment(), handshakeTimeout, null);
}
if (params.getAttachment() instanceof HttpVersionPolicy) {
endpointPolicy = (HttpVersionPolicy) params.getAttachment();
}
}
ioSession.registerProtocol(ApplicationProtocol.HTTP_1_1.id, new ServerHttp1UpgradeHandler(http1StreamHandlerFactory));
ioSession.registerProtocol(ApplicationProtocol.HTTP_2.id, new ServerH2UpgradeHandler(http2StreamHandlerFactory));
switch (endpointPolicy) {
case FORCE_HTTP_2:
return new ServerH2PrefaceHandler(ioSession, http2StreamHandlerFactory);
case FORCE_HTTP_1:
return new ServerHttp1IOEventHandler(http1StreamHandlerFactory.create(uriScheme.id, ioSession));
default:
return new HttpProtocolNegotiator(ioSession, null);
}
}
}