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A bundle project producing JAX-RS RI bundles. The primary artifact is an "all-in-one" OSGi-fied JAX-RS RI bundle (jaxrs-ri.jar). Attached to that are two compressed JAX-RS RI archives. The first archive (jaxrs-ri.zip) consists of binary RI bits and contains the API jar (under "api" directory), RI libraries (under "lib" directory) as well as all external RI dependencies (under "ext" directory). The secondary archive (jaxrs-ri-src.zip) contains buildable JAX-RS RI source bundle and contains the API jar (under "api" directory), RI sources (under "src" directory) as well as all external RI dependencies (under "ext" directory). The second archive also contains "build.xml" ANT script that builds the RI sources. To build the JAX-RS RI simply unzip the archive, cd to the created jaxrs-ri directory and invoke "ant" from the command line.

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 * 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.
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 */

package org.glassfish.jersey.client;

import java.util.Arrays;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Future;

import javax.ws.rs.ProcessingException;
import javax.ws.rs.core.HttpHeaders;

import org.glassfish.jersey.ExtendedConfig;
import org.glassfish.jersey.client.spi.AsyncConnectorCallback;
import org.glassfish.jersey.client.spi.Connector;
import org.glassfish.jersey.internal.Version;
import org.glassfish.jersey.message.MessageBodyWorkers;
import org.glassfish.jersey.process.internal.ChainableStage;
import org.glassfish.jersey.process.internal.RequestScope;
import org.glassfish.jersey.process.internal.Stage;
import org.glassfish.jersey.process.internal.Stages;

import org.glassfish.hk2.api.ServiceLocator;

/**
 * Client-side request processing runtime.
 *
 * @author Marek Potociar (marek.potociar at oracle.com)
 */
class ClientRuntime {
    private final Stage requestProcessingRoot;
    private final Stage responseProcessingRoot;

    private final Connector connector;
    private final ExtendedConfig config;

    private final RequestScope requestScope;
    private final ClientAsyncExecutorsFactory asyncExecutorsFactory;

    private final ServiceLocator locator;

    /**
     * Create new client request processing runtime.
     *
     * @param config    client runtime configuration.
     * @param connector client transport connector.
     * @param locator   HK2 service locator.
     */
    public ClientRuntime(final ExtendedConfig config, final Connector connector, final ServiceLocator locator) {
        final Stage.Builder requestingChainBuilder = Stages
                .chain(locator.createAndInitialize(RequestProcessingInitializationStage.class));
        final ChainableStage requestFilteringStage = ClientFilteringStages.createRequestFilteringStage(locator);
        this.requestProcessingRoot = requestFilteringStage != null ?
                requestingChainBuilder.build(requestFilteringStage) : requestingChainBuilder.build();

        final ChainableStage responseFilteringStage = ClientFilteringStages.createResponseFilteringStage(locator);
        this.responseProcessingRoot = responseFilteringStage != null ?
                responseFilteringStage : Stages.identity();

        this.config = config;
        this.connector = connector;

        this.requestScope = locator.getService(RequestScope.class);
        this.asyncExecutorsFactory = new ClientAsyncExecutorsFactory(locator);

        this.locator = locator;
    }

    /**
     * Submit a {@link ClientRequest client request} for asynchronous processing.
     * 

     * Both, the request processing as well as response callback invocation will be executed
     * in a context of an active {@link RequestScope.Instance request scope instance}.
     * 

     *
     * @param request  client request to be sent.
     * @param callback asynchronous response callback.
     */
    public void submit(final ClientRequest request, final ResponseCallback callback) {
        submit(asyncExecutorsFactory.getRequestingExecutor(request), new Runnable() {

            @Override
            public void run() {
                final RequestScope.Instance currentScopeInstance = requestScope.referenceCurrent();
                final AsyncConnectorCallback connectorCallback = new AsyncConnectorCallback() {

                    @Override
                    public void response(final ClientResponse response) {
                        submit(asyncExecutorsFactory.getRespondingExecutor(request), currentScopeInstance, new Runnable() {
                            @Override
                            public void run() {
                                final ClientResponse processedResponse;
                                try {
                                    processedResponse = Stages.process(response, responseProcessingRoot);
                                } catch (Throwable throwable) {
                                    failure(throwable);
                                    return;
                                }
                                try {
                                    callback.completed(processedResponse, requestScope);
                                } finally {
                                    currentScopeInstance.release();
                                }
                            }
                        });
                    }

                    @Override
                    public void failure(Throwable failure) {
                        try {
                            callback.failed(failure instanceof ProcessingException ?
                                    (ProcessingException) failure : new ProcessingException(failure));
                        } finally {
                            currentScopeInstance.release();
                        }
                    }
                };
                try {
                    connector.apply(
                            addUserAgent(Stages.process(request, requestProcessingRoot), connector.getName()),
                            connectorCallback);
                } catch (AbortException aborted) {
                    connectorCallback.response(aborted.getAbortResponse());
                } catch (Throwable throwable) {
                    connectorCallback.failure(throwable);
                }
            }
        });
    }

    private Future submit(final ExecutorService executor, final Runnable task) {
        return executor.submit(new Runnable() {
            @Override
            public void run() {
                requestScope.runInScope(task);
            }
        });
    }

    private Future submit(final ExecutorService executor, final RequestScope.Instance scopeInstance, final Runnable task) {
        return executor.submit(new Runnable() {
            @Override
            public void run() {
                requestScope.runInScope(scopeInstance, task);
            }
        });
    }

    private ClientRequest addUserAgent(ClientRequest clientRequest, String connectorName) {
        if (!clientRequest.getHeaders().containsKey(HttpHeaders.USER_AGENT)) {
            if (connectorName != null && !connectorName.equals("")) {
                clientRequest.getHeaders().put(HttpHeaders.USER_AGENT, Arrays.asList(String.format("Jersey/%s (%s)",
                        Version.getVersion(), connectorName)));
            } else {
                clientRequest.getHeaders().put(HttpHeaders.USER_AGENT, Arrays.asList(String.format("Jersey/%s",
                        Version.getVersion())));
            }
        }
        return clientRequest;
    }

    /**
     * Invoke a request processing synchronously in the context of the caller's thread.
     * 

     * NOTE: the method does not explicitly start a new request scope context. Instead
     * it is assumed that the method is invoked from within a context of a proper, running
     * {@link RequestScope.Instance request scope instance}. A caller may use the
     * {@link #getRequestScope()} method to retrieve the request scope instance and use it to
     * initialize the proper request scope context prior the method invocation.
     * 

     *
     * @param request client request to be invoked.
     * @return client response.
     * @throws javax.ws.rs.ProcessingException in case of an invocation failure.
     */
    public ClientResponse invoke(final ClientRequest request) throws ProcessingException {
        ClientResponse response;
        try {
            try {
                response = connector.apply(addUserAgent(Stages.process(request, requestProcessingRoot), connector.getName()));
            } catch (AbortException aborted) {
                response = aborted.getAbortResponse();
            }

            return Stages.process(response, responseProcessingRoot);
        } catch (ProcessingException ex) {
            throw ex;
        } catch (Throwable t) {
            throw new ProcessingException(t.getMessage(), t);
        }
    }

    /**
     * Get the request scope instance configured for the runtime.
     *
     * @return request scope instance.
     */
    public RequestScope getRequestScope() {
        return requestScope;
    }

    /**
     * Get runtime configuration.
     *
     * @return runtime configuration.
     */
    public ExtendedConfig getConfig() {
        return config;
    }

    /**
     * Close the client runtime and release the underlying transport connector.
     */
    public void close() {
        connector.close();
    }

    /**
     * Pre-initialize the client runtime.
     */
    public void preInitialize() {
        // pre-initialize MessageBodyWorkers
        locator.getService(MessageBodyWorkers.class);
    }
}
 















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