67 lines
1.7 KiB
Java
67 lines
1.7 KiB
Java
package org.gcube.datatransfer.resolver;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStream;
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import javax.ws.rs.WebApplicationException;
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import javax.ws.rs.core.StreamingOutput;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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/**
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* The Class SingleFileStreamingOutput.
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*
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* @author Francesco Mangiacrapa at ISTI-CNR (francesco.mangiacrapa@isti.cnr.it)
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* Nov 15, 2018
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*/
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public class SingleFileStreamingOutput implements StreamingOutput {
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private static final Logger log = LoggerFactory.getLogger(SingleFileStreamingOutput.class);
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InputStream streamToWrite;
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/**
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* Instantiates a new single file streaming output.
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*
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* @param streamToWrite the stream to write
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*/
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public SingleFileStreamingOutput(InputStream streamToWrite) {
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super();
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this.streamToWrite = streamToWrite;
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}
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/**
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* Overriding the write method to write request data directly to Jersey outputStream .
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*
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* @param outputStream the output stream
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* @throws IOException Signals that an I/O exception has occurred.
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* @throws WebApplicationException the web application exception
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*/
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@Override
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public void write(OutputStream outputStream) throws IOException, WebApplicationException {
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log.debug("writing StreamOutput");
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copy(streamToWrite, outputStream);
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log.debug("StreamOutput written");
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}
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/**
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* Copy.
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*
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* @param in the in
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* @param out the out
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* @throws IOException Signals that an I/O exception has occurred.
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*/
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private void copy(InputStream in, OutputStream out) throws IOException {
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byte[] buffer = new byte[2048];
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int readcount = 0;
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while ((readcount=in.read(buffer))!=-1) {
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out.write(buffer, 0, readcount);
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}
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}
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} |