001/**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.activemq.blob;
018
019import java.io.File;
020import java.io.FileInputStream;
021import java.io.IOException;
022import java.io.InputStream;
023import java.io.OutputStream;
024import java.net.HttpURLConnection;
025import java.net.MalformedURLException;
026import java.net.URL;
027
028import javax.jms.JMSException;
029
030import org.apache.activemq.command.ActiveMQBlobMessage;
031
032/**
033 * A default implementation of {@link BlobUploadStrategy} which uses the URL
034 * class to upload files or streams to a remote URL
035 */
036public class DefaultBlobUploadStrategy extends DefaultStrategy implements BlobUploadStrategy {
037
038    public DefaultBlobUploadStrategy(BlobTransferPolicy transferPolicy) {
039        super(transferPolicy);
040    }
041
042    public URL uploadFile(ActiveMQBlobMessage message, File file) throws JMSException, IOException {
043        return uploadStream(message, new FileInputStream(file));
044    }
045
046    public URL uploadStream(ActiveMQBlobMessage message, InputStream fis) throws JMSException, IOException {
047        URL url = createMessageURL(message);
048
049        HttpURLConnection connection = (HttpURLConnection)url.openConnection();
050        connection.setRequestMethod("PUT");
051        connection.setDoOutput(true);
052
053        // use chunked mode or otherwise URLConnection loads everything into
054        // memory
055        // (chunked mode not supported before JRE 1.5)
056        connection.setChunkedStreamingMode(transferPolicy.getBufferSize());
057
058        OutputStream os = connection.getOutputStream();
059
060        byte[] buf = new byte[transferPolicy.getBufferSize()];
061        for (int c = fis.read(buf); c != -1; c = fis.read(buf)) {
062            os.write(buf, 0, c);
063            os.flush();
064        }
065        os.close();
066        fis.close();
067
068        if (!isSuccessfulCode(connection.getResponseCode())) {
069            throw new IOException("PUT was not successful: " + connection.getResponseCode() + " "
070                                  + connection.getResponseMessage());
071        }
072
073        return url;
074    }
075
076
077}