/*
* Copyright 2016 Naver Corp.
*
* Licensed 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 com.navercorp.pinpoint.common.server.bo.codec.stat;
import com.navercorp.pinpoint.common.buffer.AutomaticBuffer;
import com.navercorp.pinpoint.common.buffer.Buffer;
import com.navercorp.pinpoint.common.server.bo.stat.AgentStatDataPoint;
import java.nio.ByteBuffer;
import java.util.List;
/**
* @author HyunGil Jeong
*/
public class AgentStatEncoder<T extends AgentStatDataPoint> {
private final AgentStatCodec<T> codec;
public AgentStatEncoder(AgentStatCodec<T> codec) {
this.codec = codec;
}
public ByteBuffer encodeQualifier(long timestampDelta) {
// Variable-length encoding of 5 minutes (300000 ms) takes up max 3 bytes
Buffer qualifierBuffer = new AutomaticBuffer(3);
qualifierBuffer.putVLong(timestampDelta);
return qualifierBuffer.wrapByteBuffer();
}
public ByteBuffer encodeValue(List<T> agentStatDataPoints) {
Buffer valueBuffer = new AutomaticBuffer();
valueBuffer.putByte(this.codec.getVersion());
codec.encodeValues(valueBuffer, agentStatDataPoints);
return valueBuffer.wrapByteBuffer();
}
}