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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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/*
 * Copyright (c) 2012, 2020 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;

import java.util.logging.Logger;

import jakarta.inject.Inject;
import jakarta.inject.Named;

import org.glassfish.jersey.client.internal.LocalizationMessages;
import org.glassfish.jersey.internal.util.collection.LazyValue;
import org.glassfish.jersey.internal.util.collection.Value;
import org.glassfish.jersey.internal.util.collection.Values;
import org.glassfish.jersey.spi.ThreadPoolExecutorProvider;

/**
 * Default {@link org.glassfish.jersey.spi.ExecutorServiceProvider} used on the client side for asynchronous request processing.
 *
 * @author Marek Potociar
 */
@ClientAsyncExecutor
class DefaultClientAsyncExecutorProvider extends ThreadPoolExecutorProvider {

    private static final Logger LOGGER = Logger.getLogger(DefaultClientAsyncExecutorProvider.class.getName());

    private final LazyValue asyncThreadPoolSize;

    /**
     * Creates a new instance.
     *
     * @param poolSize size of the default executor thread pool (if used). Zero or negative values are ignored.
     *                 See also {@link org.glassfish.jersey.client.ClientProperties#ASYNC_THREADPOOL_SIZE}.
     */
    @Inject
    public DefaultClientAsyncExecutorProvider(@Named("ClientAsyncThreadPoolSize") final int poolSize) {
        super("jersey-client-async-executor");

        this.asyncThreadPoolSize = Values.lazy(new Value() {
            @Override
            public Integer get() {
                if (poolSize <= 0) {
                    LOGGER.config(LocalizationMessages.IGNORED_ASYNC_THREADPOOL_SIZE(poolSize));
                    // using default
                    return Integer.MAX_VALUE;
                } else {
                    LOGGER.config(LocalizationMessages.USING_FIXED_ASYNC_THREADPOOL(poolSize));
                    return poolSize;
                }
            }
        });
    }

    @Override
    protected int getMaximumPoolSize() {
        return asyncThreadPoolSize.get();
    }

    @Override
    protected int getCorePoolSize() {
        // Mimicking the Executors.newCachedThreadPool and newFixedThreadPool configuration values.
        final Integer maximumPoolSize = getMaximumPoolSize();
        if (maximumPoolSize != Integer.MAX_VALUE) {
            return maximumPoolSize;
        } else {
            return 0;
        }
    }
}