com.hazelcast.client.connection.nio.ClientProtocolEncoder Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2020, Hazelcast, Inc. All Rights Reserved.
*
* 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.hazelcast.client.connection.nio;
import com.hazelcast.internal.networking.OutboundHandler;
import com.hazelcast.internal.networking.HandlerStatus;
import java.nio.ByteBuffer;
import static com.hazelcast.internal.networking.HandlerStatus.CLEAN;
import static com.hazelcast.internal.networking.HandlerStatus.DIRTY;
import static com.hazelcast.nio.Protocols.CLIENT_BINARY_NEW;
import static com.hazelcast.nio.Protocols.PROTOCOL_LENGTH;
import static com.hazelcast.util.StringUtil.stringToBytes;
/**
* A {@link OutboundHandler} that writes the client protocol bytes
* and once they have been fully written, it removes itself from pipeline.
*
* On a plain connection, this should be the last encoder in the pipeline.
*
* Even though the ClientProtocolEncoder has a ByteBuffer as src, it will
* never consume bytes from this source.
*/
public class ClientProtocolEncoder extends OutboundHandler {
@Override
public void handlerAdded() {
initDstBuffer(PROTOCOL_LENGTH, stringToBytes(CLIENT_BINARY_NEW));
}
@Override
public HandlerStatus onWrite() {
if (dst.remaining() == 0) {
channel.outboundPipeline().remove(this);
return CLEAN;
} else {
return DIRTY;
}
}
}