org.xlcloud.rest.client.config.RestClientProducer Maven / Gradle / Ivy

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This module provides base classes for creation of REST client (SDK). Default client has preconfigured filters, Oauth2 token injection or even object mapper.

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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.rest.client.config;

import javax.enterprise.context.ApplicationScoped;
import javax.enterprise.inject.Produces;

import org.apache.log4j.Logger;

import com.fasterxml.jackson.jaxrs.json.JacksonJaxbJsonProvider;
import com.sun.jersey.api.client.Client;
import com.sun.jersey.api.client.config.ClientConfig;
import com.sun.jersey.api.client.config.DefaultClientConfig;

/**
 * Producer of jersey rest client.
 * @author Konrad Król, AMG.net
 */
@ApplicationScoped
public class RestClientProducer {
    
    private static final Logger LOG = Logger.getLogger(RestClientProducer.class);

    private static final int DEFAULT_CHUNKED_ENCODING_SIZE = 32 * 1024;

    private final Client client;
    
    public RestClientProducer() {
        ClientConfig cc = new DefaultClientConfig();
        cc.getClasses().add(JacksonJaxbJsonProvider.class);
        cc.getClasses().add(ObjectMapperProvider.class);
        cc.getProperties().put(ClientConfig.PROPERTY_CHUNKED_ENCODING_SIZE, DEFAULT_CHUNKED_ENCODING_SIZE);
        
        client = Client.create(cc);
        client.addFilter(new ExceptionHandlingClientFilter());
        client.addFilter(new ClientLoggingFilter());
        
        LOG.debug("Created Jersey client " + client.hashCode());
    }
    
    /**
     * @return {@link Client} object based on following configuration:
     *  - {@link JacksonJaxbJsonProvider} and {@link ObjectMapperProvider} are added to the client config
     *  - {@link ClientConfig#PROPERTY_CHUNKED_ENCODING_SIZE} is set to {@link #DEFAULT_CHUNKED_ENCODING_SIZE}
     *  - {@link ExceptionHandlingClientFilter} is added to the client filters list
     */
    @Produces
    public Client createRestClient() {
        LOG.debug("Produced Jersey client " + client.hashCode());
        return client;
    }
}