/*
 * Copyright (c) 2013, 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 javax.ws.rs.client.Client;
import javax.ws.rs.core.Configuration;

Jersey client connector provider contract.
Connector provider is invoked by Jersey client runtime to provide a client connector
to be used to send client requests over the wire to server-side resources.
There can be only one connector provider registered in a single Jersey client instance.
 Note that unlike most of the other Jersey SPI extension contracts, ConnectorProvider is not a typical runtime extension and as such cannot be registered using a configuration register(...) method. Instead, it must be registered using via JerseyClientBuilder using it's ClientConfig.connectorProvider(ConnectorProvider) initializer method. 
Author:
Marek Potociar
Since:
2.5/**
 * Jersey client connector provider contract.
 *
 * Connector provider is invoked by Jersey client runtime to provide a client connector
 * to be used to send client requests over the wire to server-side resources.
 * There can be only one connector provider registered in a single Jersey client instance.
 * <p>
 * Note that unlike most of the other {@link org.glassfish.jersey.spi.Contract Jersey SPI extension contracts},
 * {@code ConnectorProvider} is not a typical runtime extension and as such cannot be registered
 * using a configuration {@code register(...)} method. Instead, it must be registered using via
 * {@link org.glassfish.jersey.client.JerseyClientBuilder} using it's
 * {@link org.glassfish.jersey.client.ClientConfig#connectorProvider(ConnectorProvider)}
 * initializer method.
 * </p>
 *
 * @author Marek Potociar
 * @since 2.5
 */
// Must not be annotated with @Contract
public interface ConnectorProvider {

    
Get a Jersey client connector instance for a given client instance and Jersey client runtime configuration. 
 Note that the supplied runtime configuration can be different from the client instance configuration as a single client can be used to serve multiple differently configured runtimes. While the SSL context or hostname verifier are shared, other configuration properties may change in each runtime. 

Based on the supplied client and runtime configuration data, it is up to each connector provider
implementation to decide whether a new dedicated connector instance is required or if the existing,
previously create connector instance can be reused.

Params:
client –        Jersey client instance.
runtimeConfig – Jersey client runtime configuration.
Returns:
configured Connector instance to be used by the client./**
     * Get a Jersey client connector instance for a given {@link Client client} instance
     * and Jersey client runtime {@link Configuration configuration}.
     * <p>
     * Note that the supplied runtime configuration can be different from the client instance
     * configuration as a single client can be used to serve multiple differently configured runtimes.
     * While the {@link Client#getSslContext() SSL context} or {@link Client#getHostnameVerifier() hostname verifier}
     * are shared, other configuration properties may change in each runtime.
     * </p>
     * <p>
     * Based on the supplied client and runtime configuration data, it is up to each connector provider
     * implementation to decide whether a new dedicated connector instance is required or if the existing,
     * previously create connector instance can be reused.
     * </p>
     *
     * @param client        Jersey client instance.
     * @param runtimeConfig Jersey client runtime configuration.
     * @return configured {@link org.glassfish.jersey.client.spi.Connector} instance to be used by the client.
     */
    public Connector getConnector(Client client, Configuration runtimeConfig);
}