org.eclipse.lyo.testsuite.server.trsutils.HttpErrorHandler.java Source code

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Here is the source code for org.eclipse.lyo.testsuite.server.trsutils.HttpErrorHandler.java

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/*******************************************************************************
 * Copyright (c) 2013 IBM Corporation.
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * and Eclipse Distribution License v. 1.0 which accompanies this distribution.
 *
 * The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
 * and the Eclipse Distribution License is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 * 
 * Contributors:
 * 
 *    Joseph Leong, Sujeet Mishra - Initial implementation
 *******************************************************************************/

package org.eclipse.lyo.testsuite.server.trsutils;

import java.io.IOException;

import org.apache.http.HttpResponse;
import org.apache.http.client.HttpResponseException;
import org.apache.http.protocol.HTTP;
import org.apache.http.util.EntityUtils;

public class HttpErrorHandler {

    /**
     * Handle a possible HTTP error response.
     * 
     * @param response
     *            The HTTP response to handle; must not be <code>null</code>
     * @throws HttpResponseException
     *             if the response status code maps to an exception class
     */
    public static void responseToException(HttpResponse response) throws HttpResponseException {
        if (response == null)
            throw new IllegalArgumentException(Messages.getServerString("http.error.handler.null.argument")); //$NON-NLS-1$

        Integer status = Integer.valueOf(response.getStatusLine().getStatusCode());

        //Create detail message from response status line and body
        String reasonPhrase = response.getStatusLine().getReasonPhrase();

        StringBuilder message = new StringBuilder(reasonPhrase == null ? "" : reasonPhrase); //$NON-NLS-1$

        if (response.getEntity() != null) {
            try {
                String body = EntityUtils.toString(response.getEntity(), HTTP.UTF_8);
                if (body != null && body.length() != 0) {
                    message.append('\n');
                    message.append(body);
                }
            } catch (IOException e) {
            } // ignore, since the original error needs to be reported
        }

        throw new HttpResponseException(status, message.toString());
    }
}