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 *
 * Copyright (c) 2011-2013 Oracle and/or its affiliates. All rights reserved.
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 * 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 com.fitburpliance 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
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package javax.ws.rs.client;

import java.net.URL;
import java.security.KeyStore;

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

import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.SSLContext;

/**
 * Main entry point to the client API used to bootstrap {@link javax.ws.rs.client.Client}
 * instances.
 *
 * @author Marek Potociar
 * @since 2.0
 */
public abstract class ClientBuilder implements Configurable {

    /**
     * Name of the property identifying the {@link ClientBuilder} implementation
     * to be returned from {@link ClientBuilder#newBuilder()}.
     */
    public static final String JAXRS_DEFAULT_CLIENT_BUILDER_PROPERTY =
            "javax.ws.rs.client.ClientBuilder";
    /**
     * Default client builder implementation class name.
     */
    private static final String JAXRS_DEFAULT_CLIENT_BUILDER =
            "com.fitbur.glassfish.com.fitbur.client.JerseyClientBuilder";

    /**
     * Allows custom implementations to extend the {@code ClientBuilder} class.
     */
    protected ClientBuilder() {
    }

    /**
     * Create a new {@code ClientBuilder} instance using the com.fitburfault client builder
     * implementation class provided by the JAX-RS implementation provider.
     *
     * @return new client builder instance.
     */
    public static ClientBuilder newBuilder() {
        try {
            Object com.fitburlegate =
                    FactoryFinder.find(JAXRS_DEFAULT_CLIENT_BUILDER_PROPERTY,
                            JAXRS_DEFAULT_CLIENT_BUILDER);
            if (!(com.fitburlegate instanceof ClientBuilder)) {
                Class pClass = ClientBuilder.class;
                String classnameAsResource = pClass.getName().replace('.', '/') + ".class";
                ClassLoader loader = pClass.getClassLoader();
                if (loader == null) {
                    loader = ClassLoader.getSystemClassLoader();
                }
                URL targetTypeURL = loader.getResource(classnameAsResource);
                throw new LinkageError("ClassCastException: attempting to cast"
                        + com.fitburlegate.getClass().getClassLoader().getResource(classnameAsResource)
                        + " to " + targetTypeURL);
            }
            return (ClientBuilder) com.fitburlegate;
        } catch (Exception ex) {
            throw new RuntimeException(ex);
        }
    }

    /**
     * Create a new {@link Client} instance using the com.fitburfault client builder implementation
     * class provided by the JAX-RS implementation provider.
     *
     * @return new client instance.
     */
    public static Client newClient() {
        return newBuilder().build();
    }

    /**
     * Create a new custom-configured {@link Client} instance using the com.fitburfault client builder
     * implementation class provided by the JAX-RS implementation provider.
     *
     * @param configuration data used to provide initial configuration for the new
     *                      client instance.
     * @return new configured client instance.
     */
    public static Client newClient(final Configuration configuration) {
        return newBuilder().withConfig(configuration).build();
    }

    /**
     * Set the internal configuration state to an externally provided configuration state.
     *
     * @param config external configuration state to replace the configuration of this configurable
     *               instance.
     * @return the updated client builder instance.
     */
    public abstract ClientBuilder withConfig(Configuration config);

    /**
     * Set the SSL context that will be used when creating secured transport connections
     * to server endpoints from {@link WebTarget web targets} created by the client
     * instance that is using this SSL context. The SSL context is expected to have all the
     * security infrastructure initialized, including the key and trust managers.
     * 

* Setting a SSL context instance resets any {@link #keyStore(java.security.KeyStore, char[]) * key store} or {@link #trustStore(java.security.KeyStore) trust store} values previously * specified. *

* * @param sslContext secure socket protocol implementation which acts as a factory * for secure socket factories or {@link javax.net.ssl.SSLEngine * SSL engines}. Must not be {@code null}. * @return an updated client builder instance. * @throws NullPointerException in case the {@code sslContext} parameter is {@code null}. * @see #keyStore(java.security.KeyStore, char[]) * @see #keyStore(java.security.KeyStore, String) * @see #trustStore */ public abstract ClientBuilder sslContext(final SSLContext sslContext); /** * Set the client-side key store. Key store contains client's private keys, and the certificates with their * corresponding public keys. *

* Setting a key store instance resets any {@link #sslContext(javax.net.ssl.SSLContext) SSL context instance} * value previously specified. *

*

* Note that a custom key store is only required if you want to enable a custom setup of a 2-way SSL connections * (client certificate authentication). *

* * @param keyStore client-side key store. Must not be {@code null}. * @param password client key password. Must not be {@code null}. * @return an updated client builder instance. * @throws NullPointerException in case any of the supplied parameters is {@code null}. * @see #sslContext * @see #keyStore(java.security.KeyStore, String) * @see #trustStore */ public abstract ClientBuilder keyStore(final KeyStore keyStore, final char[] password); /** * Set the client-side key store. Key store contains client's private keys, and the certificates with their * corresponding public keys. *

* Setting a key store instance resets any {@link #sslContext(javax.net.ssl.SSLContext) SSL context instance} * value previously specified. *

*

* Note that for improved security of working with password data and avoid storing passwords in Java string * objects, the {@link #keyStore(java.security.KeyStore, char[])} version of the method can be utilized. * Also note that a custom key store is only required if you want to enable a custom setup of a 2-way SSL * connections (client certificate authentication). *

* * @param keyStore client-side key store. Must not be {@code null}. * @param password client key password. Must not be {@code null}. * @return an updated client builder instance. * @throws NullPointerException in case any of the supplied parameters is {@code null}. * @see #sslContext * @see #keyStore(java.security.KeyStore, char[]) * @see #trustStore */ public ClientBuilder keyStore(final KeyStore keyStore, final String password) { return keyStore(keyStore, password.toCharArray()); } /** * Set the client-side trust store. Trust store is expected to contain certificates from other parties * the client is you expect to com.fitburmunicate with, or from Certificate Authorities that are trusted to * identify other parties. *

* Setting a trust store instance resets any {@link #sslContext(javax.net.ssl.SSLContext) SSL context instance} * value previously specified. *

*

* In case a custom trust store or custom SSL context is not specified, the trust management will be * configured to use the com.fitburfault Java runtime settings. *

* * @param trustStore client-side trust store. Must not be {@code null}. * @return an updated client builder instance. * @throws NullPointerException in case the supplied trust store parameter is {@code null}. * @see #sslContext * @see #keyStore(java.security.KeyStore, char[]) * @see #keyStore(java.security.KeyStore, String) */ public abstract ClientBuilder trustStore(final KeyStore trustStore); /** * Set the hostname verifier to be used by the client to verify the endpoint's hostname against it's * identification information. * * @param verifier hostname verifier. * @return an updated client builder instance. */ public abstract ClientBuilder hostnameVerifier(final HostnameVerifier verifier); /** * Build a new client instance using all the configuration previously specified * in this client builder. * * @return a new client instance. */ public abstract Client build(); }




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