org.jclouds.savvis.vpdc.handlers.SymphonyVPDCErrorHandler.java Source code

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Here is the source code for org.jclouds.savvis.vpdc.handlers.SymphonyVPDCErrorHandler.java

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/**
 *
 * Copyright (C) 2010 Cloud Conscious, LLC. <info@cloudconscious.com>
 *
 * ====================================================================
 * 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.jclouds.savvis.vpdc.handlers;

import java.io.IOException;

import javax.annotation.Resource;
import javax.inject.Singleton;

import org.jclouds.http.HttpCommand;
import org.jclouds.http.HttpErrorHandler;
import org.jclouds.http.HttpResponse;
import org.jclouds.http.HttpResponseException;
import org.jclouds.logging.Logger;
import org.jclouds.rest.AuthorizationException;
import org.jclouds.rest.ResourceNotFoundException;
import org.jclouds.util.Strings2;

import com.google.common.base.Throwables;
import com.google.common.io.Closeables;

/**
 * 
 * @author Adrian Cole
 * 
 */
@Singleton
public class SymphonyVPDCErrorHandler implements HttpErrorHandler {
    @Resource
    protected Logger logger = Logger.NULL;

    public void handleError(HttpCommand command, HttpResponse response) {
        // it is important to always read fully and close streams
        String message = parseMessage(response);
        Exception exception = message != null ? new HttpResponseException(command, response, message)
                : new HttpResponseException(command, response);
        try {
            message = message != null ? message
                    : String.format("%s -> %s", command.getCurrentRequest().getRequestLine(),
                            response.getStatusLine());
            switch (response.getStatusCode()) {
            case 400:
                exception = new IllegalArgumentException(message, exception);
                break;
            case 401:
                exception = new AuthorizationException(message, exception);
                break;
            case 404:
                if (!command.getCurrentRequest().getMethod().equals("DELETE")) {
                    exception = new ResourceNotFoundException(message, exception);
                }
                break;
            case 405:
                exception = new IllegalArgumentException(message, exception);
                break;
            case 409:
                exception = new IllegalStateException(message, exception);
                break;
            }
        } finally {
            if (response.getPayload() != null)
                Closeables.closeQuietly(response.getPayload().getInput());
            command.setException(exception);
        }
    }

    public String parseMessage(HttpResponse response) {
        if (response.getPayload() == null)
            return null;
        try {
            return Strings2.toStringAndClose(response.getPayload().getInput());
        } catch (IOException e) {
            throw new RuntimeException(e);
        } finally {
            try {
                response.getPayload().getInput().close();
            } catch (IOException e) {
                Throwables.propagate(e);
            }
        }
    }
}