org.dasein.cloud.utils.requester.DaseinResponseHandler.java Source code

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Here is the source code for org.dasein.cloud.utils.requester.DaseinResponseHandler.java

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/**
 * Copyright (C) 2009-2015 Dell, Inc.
 * See annotations for authorship information
 *
 * ====================================================================
 * 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.dasein.cloud.utils.requester;

import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpResponseException;
import org.apache.http.client.ResponseHandler;
import org.apache.http.util.EntityUtils;
import org.dasein.cloud.utils.requester.streamprocessors.StreamProcessor;

import java.io.IOException;

/**
* @author Vlad Munthiu
*/
public class DaseinResponseHandler<T> implements ResponseHandler<T> {

    private Class<T> classType;
    private StreamProcessor<T> processor;

    public DaseinResponseHandler(StreamProcessor<T> processor, Class<T> classType) {
        this.processor = processor;
        this.classType = classType;
    }

    @Override
    public T handleResponse(HttpResponse httpResponse) throws ClientProtocolException, IOException {
        if (httpResponse.getStatusLine().getStatusCode() != HttpStatus.SC_OK
                && httpResponse.getStatusLine().getStatusCode() != HttpStatus.SC_NO_CONTENT
                && httpResponse.getStatusLine().getStatusCode() != HttpStatus.SC_CREATED
                && httpResponse.getStatusLine().getStatusCode() != HttpStatus.SC_ACCEPTED) {
            throw new HttpResponseException(httpResponse.getStatusLine().getStatusCode(),
                    EntityUtils.toString(httpResponse.getEntity()));
        } else {
            if (httpResponse.getEntity() == null)
                return null;

            return processor.read(httpResponse.getEntity().getContent(), classType);
        }
    }
}