Package org.springframework.ws.transport.http

Source Code of org.springframework.ws.transport.http.CommonsHttpConnection

/*
* Copyright 2005-2014 the original author or authors.
*
* 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.springframework.ws.transport.http;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.Arrays;
import java.util.Iterator;

import org.apache.commons.httpclient.Header;
import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.MultiThreadedHttpConnectionManager;
import org.apache.commons.httpclient.URIException;
import org.apache.commons.httpclient.methods.ByteArrayRequestEntity;
import org.apache.commons.httpclient.methods.PostMethod;

import org.springframework.util.Assert;
import org.springframework.ws.WebServiceMessage;
import org.springframework.ws.transport.WebServiceConnection;

/**
* Implementation of {@link WebServiceConnection} that is based on Jakarta Commons HttpClient. Exposes a {@link
* PostMethod}.
*
* @author Arjen Poutsma
* @since 1.0.0
* @deprecated In favor of {@link HttpComponentsConnection}
*/
@Deprecated
public class CommonsHttpConnection extends AbstractHttpSenderConnection {

    private final HttpClient httpClient;

    private final PostMethod postMethod;

    private ByteArrayOutputStream requestBuffer;

    private MultiThreadedHttpConnectionManager connectionManager;

    protected CommonsHttpConnection(HttpClient httpClient, PostMethod postMethod) {
        Assert.notNull(httpClient, "httpClient must not be null");
        Assert.notNull(postMethod, "postMethod must not be null");
        this.httpClient = httpClient;
        this.postMethod = postMethod;
    }

    public PostMethod getPostMethod() {
        return postMethod;
    }

    @Override
    public void onClose() throws IOException {
        postMethod.releaseConnection();
        if (connectionManager != null) {
            connectionManager.shutdown();
        }
    }

    /*
     * URI
     */

    @Override
    public URI getUri() throws URISyntaxException {
        try {
            return new URI(postMethod.getURI().toString());
        }
        catch (URIException ex) {
            throw new URISyntaxException("", ex.getMessage());
        }
    }

    /*
     * Sending request
     */

    @Override
    protected void onSendBeforeWrite(WebServiceMessage message) throws IOException {
        requestBuffer = new ByteArrayOutputStream();
    }

    @Override
    protected void addRequestHeader(String name, String value) throws IOException {
        postMethod.addRequestHeader(name, value);
    }

    @Override
    protected OutputStream getRequestOutputStream() throws IOException {
        return requestBuffer;
    }

    @Override
    protected void onSendAfterWrite(WebServiceMessage message) throws IOException {
        postMethod.setRequestEntity(new ByteArrayRequestEntity(requestBuffer.toByteArray()));
        requestBuffer = null;
        try {
            httpClient.executeMethod(postMethod);
        } catch (IllegalStateException ex) {
            if ("Connection factory has been shutdown.".equals(ex.getMessage())) {
                // The application context has been closed, resulting in a connection factory shutdown and an ISE.
                // Let's create a new connection factory for this connection only.
                connectionManager = new MultiThreadedHttpConnectionManager();
                httpClient.setHttpConnectionManager(connectionManager);
                httpClient.executeMethod(postMethod);
            } else {
                throw ex;
            }
        }
    }

    /*
     * Receiving response
     */

    @Override
    protected int getResponseCode() throws IOException {
        return postMethod.getStatusCode();
    }

    @Override
    protected String getResponseMessage() throws IOException {
        return postMethod.getStatusText();
    }

    @Override
    protected long getResponseContentLength() throws IOException {
        return postMethod.getResponseContentLength();
    }

    @Override
    protected InputStream getRawResponseInputStream() throws IOException {
        return postMethod.getResponseBodyAsStream();
    }

    @Override
    protected Iterator<String> getResponseHeaderNames() throws IOException {
        Header[] headers = postMethod.getResponseHeaders();
        String[] names = new String[headers.length];
        for (int i = 0; i < headers.length; i++) {
            names[i] = headers[i].getName();
        }
        return Arrays.asList(names).iterator();
    }

    @Override
    protected Iterator<String> getResponseHeaders(String name) throws IOException {
        Header[] headers = postMethod.getResponseHeaders(name);
        String[] values = new String[headers.length];
        for (int i = 0; i < headers.length; i++) {
            values[i] = headers[i].getValue();
        }
        return Arrays.asList(values).iterator();
    }

}
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