org.eclipse.swordfish.plugins.resolver.proxy.impl.HttpCilentProxy.java Source code

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Here is the source code for org.eclipse.swordfish.plugins.resolver.proxy.impl.HttpCilentProxy.java

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/*******************************************************************************
 * Copyright (c) 2008, 2009 SOPERA GmbH.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     SOPERA GmbH - initial API and implementation
 *******************************************************************************/
package org.eclipse.swordfish.plugins.resolver.proxy.impl;

import java.io.IOException;
import java.io.Reader;
import java.io.StringReader;

import javax.xml.bind.JAXB;
import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpException;
import org.apache.commons.httpclient.HttpMethodBase;
import org.apache.commons.httpclient.URI;
import org.apache.commons.httpclient.methods.DeleteMethod;
import org.apache.commons.httpclient.methods.GetMethod;
import org.apache.commons.httpclient.methods.PostMethod;
import org.apache.commons.httpclient.methods.PutMethod;
import org.eclipse.swordfish.plugins.resolver.proxy.ClientRequest;
import org.eclipse.swordfish.plugins.resolver.proxy.ClientResponse;
import org.eclipse.swordfish.plugins.resolver.proxy.ProxyConstants.Method;
import org.eclipse.swordfish.plugins.resolver.proxy.ProxyConstants.Status;

/**
 *
 */
public class HttpCilentProxy extends AbstractProxy {

    private HttpClient client;

    public HttpCilentProxy() {
        client = new HttpClient();
    }

    @Override
    public ClientResponse invoke(ClientRequest request) {
        ClientResponse response = new ClientResponseImpl();
        HttpMethodBase method = getMethod(request.getMethod());

        try {
            method.setURI(new URI(request.getURI().toString(), true));
            int statusCode = getClient().executeMethod(method);
            response.setStatus(Status.get(statusCode));

            String responseBody = method.getResponseBodyAsString();
            if (request.getEntityType() != null) {
                Reader responseReader = new StringReader(responseBody);
                ClassLoader cl = Thread.currentThread().getContextClassLoader();
                try {
                    Thread.currentThread().setContextClassLoader(getClass().getClassLoader());
                    response.setEntity(JAXB.unmarshal(responseReader, request.getEntityType()));
                } finally {
                    Thread.currentThread().setContextClassLoader(cl);
                }
            } else {
                response.setEntity(responseBody);
            }
        } catch (HttpException e) {
            response.setStatus(Status.ERROR);
            response.setEntity(e);
        } catch (IOException e) {
            response.setStatus(Status.ERROR);
            response.setEntity(e);
        } finally {
            if (method != null) {
                method.releaseConnection();
            }
        }
        return response;
    }

    private HttpMethodBase getMethod(Method method) {
        HttpMethodBase result = null;

        if (method.equals(Method.GET)) {
            result = new GetMethod();
        } else if (method.equals(Method.POST)) {
            result = new PostMethod();
        } else if (method.equals(Method.DELETE)) {
            result = new DeleteMethod();
        } else if (method.equals(Method.PUT)) {
            result = new PutMethod();
        }
        return result;
    }

    public HttpClient getClient() {
        return client;
    }
}