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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.thrift.transport.sasl;
import static org.apache.thrift.transport.sasl.SaslNegotiationHeaderReader.PAYLOAD_LENGTH_BYTES;
import static org.apache.thrift.transport.sasl.SaslNegotiationHeaderReader.STATUS_BYTES;
import java.nio.ByteBuffer;
import org.apache.thrift.EncodingUtils;
import org.apache.thrift.utils.StringUtils;
/**
* Writer for sasl negotiation frames. It expect a status byte as header with a payload to be
* written out (any header whose size is not equal to 1 would be considered as error).
*/
public class SaslNegotiationFrameWriter extends FrameWriter {
public static final int HEADER_BYTES = STATUS_BYTES + PAYLOAD_LENGTH_BYTES;
@Override
public void withOnlyPayload(byte[] payload, int offset, int length) {
throw new UnsupportedOperationException("Status byte is expected for sasl frame header.");
}
@Override
protected ByteBuffer buildFrame(
byte[] header,
int headerOffset,
int headerLength,
byte[] payload,
int payloadOffset,
int payloadLength) {
if (header == null || headerLength != STATUS_BYTES) {
throw new IllegalArgumentException(
"Header "
+ StringUtils.bytesToHexString(header)
+ " does not have expected length "
+ STATUS_BYTES);
}
byte[] bytes = new byte[HEADER_BYTES + payloadLength];
System.arraycopy(header, headerOffset, bytes, 0, STATUS_BYTES);
EncodingUtils.encodeBigEndian(payloadLength, bytes, STATUS_BYTES);
System.arraycopy(payload, payloadOffset, bytes, HEADER_BYTES, payloadLength);
return ByteBuffer.wrap(bytes);
}
}
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