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PreInvocationInterceptor.java
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/
PreInvocationInterceptor.java
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/*
* Copyright (c) 2019 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0, which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the
* Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
* version 2 with the GNU Classpath Exception, which is available at
* https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
*/
package org.glassfish.jersey.client.spi;
import org.glassfish.jersey.Beta;
import org.glassfish.jersey.spi.Contract;
import javax.ws.rs.ConstrainedTo;
import javax.ws.rs.RuntimeType;
import javax.ws.rs.client.ClientRequestContext;
import javax.ws.rs.core.Response;
import java.util.concurrent.ExecutorService;
/**
* The interceptor of a client request invocation that is executed before the invocation itself, i.e. before the
* {@link javax.ws.rs.client.ClientRequestFilter} is invoked.
* <p/>
* It is ensured that all {@code PreInvocationInterceptors} are executed before the request, in the order given by the
* {@link javax.annotation.Priority}, the higher the priority the sooner the execution. Any {@code RuntimeException} thrown when
* the {@link PreInvocationInterceptor#beforeRequest(ClientRequestContext)} is being processed is accumulated and
* a multi RuntimeException with other {@link Throwable#addSuppressed(Throwable) exceptions supressed} is being thrown.
* <p/>
* For asynchronous invocation, the {@code PreInvocationInterceptor} is invoked in the main thread, i.e. not in the thread
* provided by {@link javax.ws.rs.client.ClientBuilder#executorService(ExecutorService) ExecutorService}. For reactive
* invocations, this depends on the provided {@link javax.ws.rs.client.RxInvoker}. For the default Jersey asynchronous
* {@link org.glassfish.jersey.client.JerseyCompletionStageRxInvoker}, {@code PreInvocationInterceptor} is invoked in the
* main thread, too.
* <p/>
* Should the {@link ClientRequestContext#abortWith(Response)} be utilized, the request abort is performed after every
* registered {@code PreInvocationInterceptor} is processed. If multiple
* {@code PreInvocationInterceptors PreInvocationInterceptor} tries to utilize {@link ClientRequestContext#abortWith(Response)}
* method, the second and every next throws {@code IllegalStateException}.
*
* @since 2.30
*/
@Beta
@Contract
@ConstrainedTo(RuntimeType.CLIENT)
public interface PreInvocationInterceptor {
/**
* The method invoked before the request starts.
* @param requestContext the request context shared with {@link javax.ws.rs.client.ClientRequestFilter}.
*/
void beforeRequest(ClientRequestContext requestContext);
}