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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.zookeeper.server;
import java.io.IOException;
import java.io.InputStream;
import java.nio.ByteBuffer;
import javax.annotation.Nonnull;
import org.apache.jute.BinaryInputArchive;
import org.apache.jute.Record;
public class ByteBufferInputStream extends InputStream {
private final ByteBuffer bb;
public ByteBufferInputStream(ByteBuffer bb) {
this.bb = bb;
}
@Override
public int read() throws IOException {
if (bb.remaining() == 0) {
return -1;
}
return bb.get() & 0xff;
}
@Override
public int available() throws IOException {
return bb.remaining();
}
@Override
public int read(@Nonnull byte[] b, int off, int len) throws IOException {
if (bb.remaining() == 0) {
return -1;
}
if (len > bb.remaining()) {
len = bb.remaining();
}
bb.get(b, off, len);
return len;
}
@Override
public int read(@Nonnull byte[] b) throws IOException {
return read(b, 0, b.length);
}
@Override
public long skip(long n) throws IOException {
if (n < 0L) {
return 0;
}
n = Math.min(n, bb.remaining());
bb.position(bb.position() + (int) n);
return n;
}
public static void byteBuffer2Record(ByteBuffer bb, Record record) throws IOException {
BinaryInputArchive ia;
ia = BinaryInputArchive.getArchive(new ByteBufferInputStream(bb));
record.deserialize(ia, "request");
}
}
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