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.URL;
026
027import javax.jms.JMSException;
028
029import org.apache.activemq.command.ActiveMQBlobMessage;
030
031/**
032 * A default implementation of {@link BlobUploadStrategy} which uses the URL
033 * class to upload files or streams to a remote URL
034 */
035public class DefaultBlobUploadStrategy extends DefaultStrategy implements BlobUploadStrategy {
036
037    public DefaultBlobUploadStrategy(BlobTransferPolicy transferPolicy) {
038        super(transferPolicy);
039    }
040
041    public URL uploadFile(ActiveMQBlobMessage message, File file) throws JMSException, IOException {
042        try(FileInputStream fis = new FileInputStream(file)) {
043            return uploadStream(message, fis);
044        }
045    }
046
047    public URL uploadStream(ActiveMQBlobMessage message, InputStream fis) throws JMSException, IOException {
048        URL url = createMessageURL(message);
049
050        HttpURLConnection connection = (HttpURLConnection)url.openConnection();
051        connection.setRequestMethod("PUT");
052        connection.setDoOutput(true);
053
054        // use chunked mode or otherwise URLConnection loads everything into
055        // memory
056        // (chunked mode not supported before JRE 1.5)
057        connection.setChunkedStreamingMode(transferPolicy.getBufferSize());
058
059        try(OutputStream os = connection.getOutputStream()) {
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        } catch (IOException error) {
066            throw new IOException("PUT failed to: " + url, error);
067        }
068
069        if (!isSuccessfulCode(connection.getResponseCode())) {
070            throw new IOException("PUT to " + url + " was not successful: " + connection.getResponseCode() + " "
071                                  + connection.getResponseMessage());
072        }
073
074        return url;
075    }
076
077
078}