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/*
 * Copyright 2012 AMG.lab, a Bull Group Company
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *    http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.xlcloud.openstack.client;

import org.apache.log4j.Logger;
import org.codehaus.jackson.jaxrs.JacksonJsonProvider;
import org.xlcloud.openstack.rest.OpenStackRestClientProducer;

import com.sun.jersey.api.client.Client;
import com.sun.jersey.api.client.config.ClientConfig;
import com.sun.jersey.api.client.config.DefaultClientConfig;

/**
 * Produces Jersey client instances. We cannot use
 * {@link OpenStackRestClientProducer}, because {@link OpenStackKeystoneClient}
 * is deployed on Tomcat, and so CDI is not supported.
 * 
 * @author Krzysztof Szafrański, AMG.net
 */
public enum KeystoneRestClientProducer {
    INSTANCE;
    
    private static final Logger LOG = Logger.getLogger(KeystoneRestClientProducer.class);
    
    private final Client client;
    
    KeystoneRestClientProducer() {
        ClientConfig cc = new DefaultClientConfig();
        cc.getClasses().add(JacksonJsonProvider.class);
        cc.getClasses().add(OpenStackObjectMapperProvider.class);
        client = Client.create(cc);
        final Integer timeout = 60000; // 1 minute
        client.setConnectTimeout(timeout);
        client.setReadTimeout(timeout);
        
        Logger.getLogger(KeystoneRestClientProducer.class).debug("Created Jersey client " + client.hashCode());
    }
    
    public Client produceClient() {
        LOG.debug("Produced Jersey client " + client.hashCode());
        return client;
    }
}