grails.plugin.cloudfoundry.GrailsHttpRequest.java Source code

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Here is the source code for grails.plugin.cloudfoundry.GrailsHttpRequest.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.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.List;
import java.util.Map;

import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpMethod;
import org.springframework.http.client.AbstractClientHttpRequest;
import org.springframework.http.client.ClientHttpResponse;
import org.springframework.util.FileCopyUtils;

/**
 * Based on package-default org.springframework.http.client.SimpleClientHttpRequest.
 *
 * @author Burt Beckwith
 */
public class GrailsHttpRequest extends AbstractClientHttpRequest {

    private final HttpURLConnection connection;
    private ByteArrayOutputStream bufferedOutput = new ByteArrayOutputStream();

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

    public HttpMethod getMethod() {
        return HttpMethod.valueOf(connection.getRequestMethod());
    }

    public URI getURI() {
        try {
            return connection.getURL().toURI();
        } catch (URISyntaxException ex) {
            throw new IllegalStateException("Could not get HttpURLConnection URI: " + ex.getMessage(), ex);
        }
    }

    protected ClientHttpResponse executeInternal(HttpHeaders headers,
            @SuppressWarnings("hiding") byte[] bufferedOutput) throws IOException {
        for (Map.Entry<String, List<String>> entry : headers.entrySet()) {
            String headerName = entry.getKey();
            for (String headerValue : entry.getValue()) {
                connection.addRequestProperty(headerName, headerValue);
            }
        }

        if (connection.getDoOutput()) {
            connection.setFixedLengthStreamingMode(bufferedOutput.length);
        }

        connection.connect();

        if (connection.getDoOutput()) {
            FileCopyUtils.copy(bufferedOutput, connection.getOutputStream());
        }

        return new GrailsHttpResponse(connection);
    }

    protected ClientHttpResponse executeInternal(HttpHeaders headers) throws IOException {
        byte[] bytes = bufferedOutput.toByteArray();
        if (headers.getContentLength() == -1) {
            headers.setContentLength(bytes.length);
        }
        ClientHttpResponse result = executeInternal(headers, bytes);
        bufferedOutput = null;
        return result;
    }

    protected OutputStream getBodyInternal(HttpHeaders headers) {
        return bufferedOutput;
    }
}