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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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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2012-2013 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * 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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 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
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 * GPL Classpath Exception:
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 */
package org.glassfish.jersey.client;

import java.util.Collection;
import java.util.Map;
import java.util.Set;

import javax.ws.rs.RuntimeType;
import javax.ws.rs.core.Configurable;
import javax.ws.rs.core.Configuration;
import javax.ws.rs.core.Feature;

import org.glassfish.jersey.CommonProperties;
import org.glassfish.jersey.ExtendedConfig;
import org.glassfish.jersey.client.spi.Connector;
import org.glassfish.jersey.internal.inject.Injections;
import org.glassfish.jersey.internal.inject.JerseyClassAnalyzer;
import org.glassfish.jersey.internal.inject.ProviderBinder;
import org.glassfish.jersey.internal.util.PropertiesHelper;
import org.glassfish.jersey.internal.util.collection.Value;
import org.glassfish.jersey.internal.util.collection.Values;
import org.glassfish.jersey.model.internal.CommonConfig;
import org.glassfish.jersey.model.internal.ComponentBag;

import org.glassfish.hk2.api.DynamicConfiguration;
import org.glassfish.hk2.api.ServiceLocator;
import org.glassfish.hk2.api.ServiceLocatorFactory;
import org.glassfish.hk2.utilities.binding.AbstractBinder;

/**
 * Jersey externalized implementation of client-side JAX-RS {@link javax.ws.rs.core.Configurable
 * configurable} contract.
 *
 * @author Marek Potociar (marek.potociar at oracle.com)
 * @author Martin Matula (martin.matula at oracle.com)
 * @author Libor Kramolis (libor.kramolis at oracle.com)
 */
public class ClientConfig implements Configurable, Configuration {
    /**
     * Internal configuration state.
     */
    private State state;

    /**
     * Default encapsulation of the internal configuration state.
     */
    private static class State implements Configurable, Configuration {

        /**
         * Strategy that returns the same state instance.
         */
        private static final StateChangeStrategy IDENTITY = new StateChangeStrategy() {

            @Override
            public State onChange(final State state) {
                return state;
            }
        };
        /**
         * Strategy that returns a copy of the state instance.
         */
        private static final StateChangeStrategy COPY_ON_CHANGE = new StateChangeStrategy() {

            @Override
            public State onChange(final State state) {
                return state.copy();
            }
        };

        private volatile StateChangeStrategy strategy;
        private final CommonConfig commonConfig;
        private final JerseyClient client;
        private Connector connector;


        private final Value runtime = Values.lazy(new Value() {
            @Override
            public ClientRuntime get() {
                return initRuntime();
            }
        });

        /**
         * Configuration state change strategy.
         */
        private static interface StateChangeStrategy {

            /**
             * Invoked whenever a mutator method is called in the given configuration
             * state.
             *
             * @param state configuration state to be mutated.
             * @return state instance that will be mutated and returned from the
             *         invoked configuration state mutator method.
             */
            public State onChange(final State state);
        }

        /**
         * Default configuration state constructor with {@link StateChangeStrategy "identity"}
         * state change strategy.
         *
         * @param client bound parent Jersey client.
         */
        State(JerseyClient client) {
            this.commonConfig = new CommonConfig(RuntimeType.CLIENT, ComponentBag.EXCLUDE_EMPTY);
            this.client = client;
            this.strategy = IDENTITY;
            this.connector = null;
        }

        /**
         * Copy the original configuration state while using the default state change
         * strategy.
         *
         * @param client   new Jersey client parent for the state.
         * @param original configuration strategy to be copied.
         */
        private State(JerseyClient client, State original) {
            this.client = client;
            this.strategy = IDENTITY;
            this.commonConfig = new CommonConfig(original.commonConfig);
            this.connector = original.connector;
        }

        /**
         * Create a copy of the configuration state within the same parent Jersey
         * client instance scope.
         *
         * @return configuration state copy.
         */
        State copy() {
            return new State(this.client, this);
        }

        /**
         * Create a copy of the configuration state in a scope of the given
         * parent Jersey client instance.
         *
         * @param client parent Jersey client instance.
         * @return configuration state copy.
         */
        State copy(JerseyClient client) {
            return new State(client, this);
        }

        void markAsShared() {
            strategy = COPY_ON_CHANGE;
        }

        State preInitialize() {
            final State state = strategy.onChange(this);
            state.strategy = COPY_ON_CHANGE;
            state.runtime.get().preInitialize();
            return state;

        }

        @Override
        public State property(final String name, final Object value) {
            final State state = strategy.onChange(this);
            state.commonConfig.property(name, value);
            return state;
        }

        public State loadFrom(Configuration config) {
            final State state = strategy.onChange(this);
            state.commonConfig.loadFrom(config);
            return state;
        }

        @Override
        public State register(final Class providerClass) {
            final State state = strategy.onChange(this);
            state.commonConfig.register(providerClass);
            return state;
        }

        @Override
        public State register(final Object provider) {
            final State state = strategy.onChange(this);
            state.commonConfig.register(provider);
            return state;
        }

        @Override
        public State register(final Class providerClass, final int bindingPriority) {
            final State state = strategy.onChange(this);
            state.commonConfig.register(providerClass, bindingPriority);
            return state;
        }

        @Override
        public State register(final Class providerClass, final Class... contracts) {
            final State state = strategy.onChange(this);
            state.commonConfig.register(providerClass, contracts);
            return state;
        }

        @Override
        public State register(final Class providerClass, final Map, Integer> contracts) {
            final State state = strategy.onChange(this);
            state.commonConfig.register(providerClass, contracts);
            return state;
        }

        @Override
        public State register(final Object provider, final int bindingPriority) {
            final State state = strategy.onChange(this);
            state.commonConfig.register(provider, bindingPriority);
            return state;
        }

        @Override
        public State register(final Object provider, final Class... contracts) {
            final State state = strategy.onChange(this);
            state.commonConfig.register(provider, contracts);
            return state;
        }

        @Override
        public State register(final Object provider, final Map, Integer> contracts) {
            final State state = strategy.onChange(this);
            state.commonConfig.register(provider, contracts);
            return state;
        }

        State setConnector(Connector connector) {
            final State state = strategy.onChange(this);
            state.connector = connector;
            return state;
        }

        Connector getConnector() {
            return connector;
        }

        JerseyClient getClient() {
            return client;
        }

        @Override
        public State getConfiguration() {
            return this;
        }

        @Override
        public RuntimeType getRuntimeType() {
            return commonConfig.getConfiguration().getRuntimeType();
        }

        @Override
        public Map getProperties() {
            return commonConfig.getConfiguration().getProperties();
        }

        @Override
        public Object getProperty(String name) {
            return commonConfig.getConfiguration().getProperty(name);
        }

        @Override
        public Collection getPropertyNames() {
            return commonConfig.getConfiguration().getPropertyNames();
        }

        @Override
        public boolean isEnabled(Feature feature) {
            return commonConfig.getConfiguration().isEnabled(feature);
        }

        @Override
        public boolean isEnabled(Class featureClass) {
            return commonConfig.getConfiguration().isEnabled(featureClass);
        }

        @Override
        public boolean isRegistered(Object component) {
            return commonConfig.getConfiguration().isRegistered(component);
        }

        @Override
        public boolean isRegistered(Class componentClass) {
            return commonConfig.getConfiguration().isRegistered(componentClass);
        }

        @Override
        public Map, Integer> getContracts(Class componentClass) {
            return commonConfig.getConfiguration().getContracts(componentClass);
        }

        @Override
        public Set> getClasses() {
            return commonConfig.getConfiguration().getClasses();
        }

        @Override
        public Set getInstances() {
            return commonConfig.getConfiguration().getInstances();
        }

        /**
         * Initialize the newly constructed client instance.
         */
        private ClientRuntime initRuntime() {
            /**
             * Ensure that any attempt to add a new provider, feature, binder or modify the connector
             * will cause a copy of the current state.
             */
            markAsShared();

            final CommonConfig runtimeConfig = new CommonConfig(this.commonConfig);

            final ServiceLocator locator = Injections.createLocator(
                    new ClientBinder(runtimeConfig.getProperties(), RuntimeType.CLIENT));
            locator.setDefaultClassAnalyzerName(JerseyClassAnalyzer.NAME);

            // AutoDiscoverable.
            if (!PropertiesHelper.getValue(runtimeConfig.getProperties(), RuntimeType.CLIENT,
                    CommonProperties.FEATURE_AUTO_DISCOVERY_DISABLE, Boolean.FALSE, Boolean.class)) {
                runtimeConfig.configureAutoDiscoverableProviders(locator);
            }

            // Configure binders and features.
            runtimeConfig.configureMetaProviders(locator);

            // Bind configuration.
            final ExtendedConfig configuration = runtimeConfig.getConfiguration();
            final AbstractBinder configBinder = new AbstractBinder() {
                @Override
                protected void configure() {
                    bind(configuration).to(Configuration.class);
                }
            };
            final DynamicConfiguration dc = Injections.getConfiguration(locator);
            configBinder.bind(dc);
            dc.commit();

            // Bind providers.
            ProviderBinder.bindProviders(runtimeConfig.getComponentBag(), RuntimeType.CLIENT, null, locator);

            final ClientRuntime crt = new ClientRuntime(configuration, connector, locator);
            client.addListener(new JerseyClient.LifecycleListener() {
                @Override
                public void onClose() {
                    try {
                        crt.close();
                    } finally {
                        ServiceLocatorFactory.getInstance().destroy(locator.getName());
                    }
                }
            });

            return crt;
        }

        @Override
        public boolean equals(Object o) {
            if (this == o) return true;
            if (o == null || getClass() != o.getClass()) return false;

            State state = (State) o;

            if (client != null ? !client.equals(state.client) : state.client != null) return false;
            if (!commonConfig.equals(state.commonConfig)) return false;
            if (connector != null ? !connector.equals(state.connector) : state.connector != null) return false;

            return true;
        }

        @Override
        public int hashCode() {
            int result = commonConfig.hashCode();
            result = 31 * result + (client != null ? client.hashCode() : 0);
            result = 31 * result + (connector != null ? connector.hashCode() : 0);
            return result;
        }
    }

    /**
     * Construct a new Jersey configuration instance with the default features
     * and property values.
     */
    public ClientConfig() {
        this.state = new State(null);
    }

    /**
     * Construct a new Jersey configuration instance and register the provided list of provider classes.
     *
     * @param providerClasses provider classes to be registered with this client configuration.
     */
    public ClientConfig(Class... providerClasses) {
        this();
        for (Class providerClass : providerClasses) {
            state.register(providerClass);
        }
    }

    /**
     * Construct a new Jersey configuration instance and register the provided list of provider instances.
     *
     * @param providers provider instances to be registered with this client configuration.
     */
    public ClientConfig(Object... providers) {
        this();
        for (Object provider : providers) {
            state.register(provider);
        }
    }

    /**
     * Construct a new Jersey configuration instance with the features as well as
     * property values copied from the supplied JAX-RS configuration instance.
     *
     * @param parent parent Jersey client instance.
     */
    ClientConfig(JerseyClient parent) {
        this.state = new State(parent);
        this.state.setConnector(new HttpUrlConnector(this.state));
    }

    /**
     * Construct a new Jersey configuration instance with the features as well as
     * property values copied from the supplied JAX-RS configuration instance.
     *
     * @param parent parent Jersey client instance.
     * @param that   original {@link javax.ws.rs.core.Configuration}.
     */
    ClientConfig(JerseyClient parent, Configuration that) {
        if (that instanceof ClientConfig) {
            state = ((ClientConfig) that).state.copy(parent);
            if (state.getConnector() == null) {
                state.setConnector(new HttpUrlConnector(state));
            }
        } else {
            state = new State(parent);
            state.setConnector(new HttpUrlConnector(state));
            state.loadFrom(that);
        }
    }

    /**
     * Construct a new Jersey configuration instance using the supplied state.
     *
     * @param state to be referenced from the new configuration instance.
     */
    private ClientConfig(final State state) {
        this.state = state;
    }

    /**
     * Take a snapshot of the current configuration and its internal state.
     * 

     * The returned configuration object is an new instance different from the
     * original one, however the cloning of the internal configuration state is
     * lazily deferred until either original or the snapshot configuration is
     * modified for the first time since the snapshot was taken.
     *
     * @return snapshot of the current configuration.
     */
    ClientConfig snapshot() {
        state.markAsShared();
        return new ClientConfig(state);
    }

    /**
     * Load the internal configuration state from an externally provided configuration state.
     *
     * Calling this method effectively replaces existing configuration state of the instance
     * with the state represented by the externally provided configuration.
     *
     * @param config external configuration state to replace the configuration of this configurable
     *               instance.
     * @return the updated client configuration instance.
     */
    public ClientConfig loadFrom(Configuration config) {
        if (config instanceof ClientConfig) {
            state = ((ClientConfig) config).state.copy();
            if (state.getConnector() == null) {
                state.setConnector(new HttpUrlConnector(state));
            }
        } else {
            state.loadFrom(config);
        }
        return this;
    }

    @Override
    public ClientConfig register(final Class providerClass) {
        state = state.register(providerClass);
        return this;
    }

    @Override
    public ClientConfig register(final Object provider) {
        state = state.register(provider);
        return this;
    }

    @Override
    public ClientConfig register(Class providerClass, int bindingPriority) {
        state = state.register(providerClass, bindingPriority);
        return this;
    }

    @Override
    public ClientConfig register(Class providerClass, Class... contracts) {
        state = state.register(providerClass, contracts);
        return this;
    }

    @Override
    public ClientConfig register(Class providerClass, Map, Integer> contracts) {
        state = state.register(providerClass, contracts);
        return this;
    }

    @Override
    public ClientConfig register(Object provider, int bindingPriority) {
        state = state.register(provider, bindingPriority);
        return this;
    }

    @Override
    public ClientConfig register(Object provider, Class... contracts) {
        state = state.register(provider, contracts);
        return this;
    }

    @Override
    public ClientConfig register(Object provider, Map, Integer> contracts) {
        state = state.register(provider, contracts);
        return this;
    }

    @Override
    public ClientConfig property(final String name, final Object value) {
        state = state.property(name, value);
        return this;
    }

    @Override
    public ClientConfig getConfiguration() {
        return this;
    }

    @Override
    public RuntimeType getRuntimeType() {
        return state.getRuntimeType();
    }

    @Override
    public Map getProperties() {
        return state.getProperties();
    }

    @Override
    public Object getProperty(String name) {
        return state.getProperty(name);
    }

    @Override
    public Collection getPropertyNames() {
        return state.getPropertyNames();
    }

    @Override
    public boolean isEnabled(Feature feature) {
        return state.isEnabled(feature);
    }

    @Override
    public boolean isEnabled(Class featureClass) {
        return state.isEnabled(featureClass);
    }

    @Override
    public boolean isRegistered(Object component) {
        return state.isRegistered(component);
    }

    @Override
    public Map, Integer> getContracts(Class componentClass) {
        return state.getContracts(componentClass);
    }

    @Override
    public boolean isRegistered(Class componentClass) {
        return state.isRegistered(componentClass);
    }

    @Override
    public Set> getClasses() {
        return state.getClasses();
    }

    @Override
    public Set getInstances() {
        return state.getInstances();
    }

    /**
     * Set Jersey client transport connector.
     *
     * @param connector client transport connector.
     * @return this client config instance.
     */
    public ClientConfig connector(Connector connector) {
        state = state.setConnector(connector);
        return this;
    }

    /**
     * Get the client transport connector.
     *
     * May return {@code null} if no connector has been set.
     *
     * @return client transport connector or {code null} if not set.
     */
    public Connector getConnector() {
        return state.getConnector();
    }

    /**
     * Get the configured runtime.
     *
     * @return configured runtime.
     */
    ClientRuntime getRuntime() {
        return state.runtime.get();
    }

    /**
     * Get the parent Jersey client this configuration is bound to.
     *
     * May return {@code null} if no parent client has been bound.
     *
     * @return bound parent Jersey client or {@code null} if not bound.
     */
    public JerseyClient getClient() {
        return state.getClient();
    }


    /**
     * Pre initializes this configuration by initializing {@link ClientRuntime client runtime}
     * including {@link org.glassfish.jersey.message.MessageBodyWorkers message body workers}.
     * Once this method is called no other method implementing {@link Configurable} should be called
     * on this pre initialized configuration otherwise configuration will change back to uninitialized.
     * 

     * Note that this method must be called only when configuration is attached to the client.
     *
     * @return Client configuration.
     */
    ClientConfig preInitialize() {
        state = state.preInitialize();
        return this;
    }

    /**
     * Check that the configuration instance has a parent client set.
     *
     * @throws IllegalStateException in case no parent Jersey client has been
     *                               bound to the configuration instance yet.
     */
    void checkClient() throws IllegalStateException {
        if (getClient() == null) {
            throw new IllegalStateException("Client configuration does not contain a parent client instance.");
        }
    }

    @Override
    public boolean equals(final Object obj) {
        if (obj == null) {
            return false;
        }
        if (getClass() != obj.getClass()) {
            return false;
        }
        final ClientConfig other = (ClientConfig) obj;
        return this.state == other.state || (this.state != null && this.state.equals(other.state));
    }

    @Override
    public int hashCode() {
        int hash = 7;
        hash = 47 * hash + (this.state != null ? this.state.hashCode() : 0);
        return hash;
    }
}
 















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