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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.filedistribution;
import com.yahoo.config.FileReference;
import java.nio.ByteBuffer;
public class EmptyFileReferenceData extends FileReferenceData {
private final byte[] content;
private final long xxhash;
private int contentRead = 0;
private EmptyFileReferenceData(FileReference fileReference, String filename, Type type, byte[] content, long xxhash) {
super(fileReference, filename, type, CompressionType.gzip);
this.content = content;
this.xxhash = xxhash;
}
public static FileReferenceData empty(FileReference fileReference, String filename) {
return new EmptyFileReferenceData(fileReference, filename, FileReferenceData.Type.file, new byte[0], 0);
}
public ByteBuffer content() {
return ByteBuffer.wrap(content);
}
@Override
public int nextContent(ByteBuffer bb) {
if (contentRead >= content.length) {
return -1;
} else {
int left = content.length - contentRead;
int size = Math.min(bb.remaining(), left);
bb.put(content, contentRead, size);
contentRead += size;
return size;
}
}
@Override
public long xxhash() {
return xxhash;
}
@Override
public long size() {
return content.length;
}
@Override
public void close() {
// no-op
}
}
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