grails.plugin.cloudfoundry.GrailsHttpResponse.java Source code

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Here is the source code for grails.plugin.cloudfoundry.GrailsHttpResponse.java

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/* Copyright 2011-2012 SpringSource.
 *
 * 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 grails.plugin.cloudfoundry;

import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;

import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.http.client.ClientHttpResponse;
import org.springframework.util.StringUtils;

/**
 * Based on package-default org.springframework.http.client.SimpleClientHttpResponse.
 *
 * @author Burt Beckwith
 */
public class GrailsHttpResponse implements ClientHttpResponse {

    private final HttpURLConnection connection;

    private HttpHeaders headers;

    /**
     * Constructor.
     * @param connection the connection
     */
    public GrailsHttpResponse(HttpURLConnection connection) {
        this.connection = connection;
    }

    public HttpStatus getStatusCode() throws IOException {
        return HttpStatus.valueOf(getRawStatusCode());
    }

    public int getRawStatusCode() throws IOException {
        return connection.getResponseCode();
    }

    public String getStatusText() throws IOException {
        return connection.getResponseMessage();
    }

    public HttpHeaders getHeaders() {
        if (headers == null) {
            headers = new HttpHeaders();
            // Header field 0 is the status line for most HttpURLConnections, but not on GAE
            String name = connection.getHeaderFieldKey(0);
            if (StringUtils.hasLength(name)) {
                headers.add(name, connection.getHeaderField(0));
            }
            int i = 1;
            while (true) {
                name = connection.getHeaderFieldKey(i);
                if (!StringUtils.hasLength(name)) {
                    break;
                }
                headers.add(name, connection.getHeaderField(i));
                i++;
            }
        }
        return headers;
    }

    public InputStream getBody() throws IOException {
        InputStream errorStream = connection.getErrorStream();
        return (errorStream != null ? errorStream : connection.getInputStream());
    }

    public void close() {
        connection.disconnect();
    }
}