com.hazelcast.client.impl.protocol.util.ClientMessageEncoder Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2021, 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.impl.protocol.util;
import com.hazelcast.client.impl.protocol.ClientMessage;
import com.hazelcast.client.impl.protocol.ClientMessageWriter;
import com.hazelcast.internal.networking.HandlerStatus;
import com.hazelcast.internal.networking.OutboundHandler;
import java.nio.ByteBuffer;
import java.util.function.Supplier;
import static com.hazelcast.internal.networking.HandlerStatus.CLEAN;
import static com.hazelcast.internal.networking.HandlerStatus.DIRTY;
import static com.hazelcast.internal.nio.IOUtil.compactOrClear;
/**
* A {@link OutboundHandler} for the new-client. It writes ClientMessages to the ByteBuffer.
*/
public class ClientMessageEncoder extends OutboundHandler, ByteBuffer> {
private ClientMessage message;
private final ClientMessageWriter clientMessageWriter = new ClientMessageWriter();
@Override
public void handlerAdded() {
initDstBuffer();
}
@Override
public HandlerStatus onWrite() {
compactOrClear(dst);
try {
for (; ; ) {
if (message == null) {
message = src.get();
if (message == null) {
// everything is processed, so we are done
return CLEAN;
}
}
if (clientMessageWriter.writeTo(dst, message)) {
// message got written, lets see if another message can be written
message = null;
} else {
// the message didn't get written completely, so we are done.
return DIRTY;
}
}
} finally {
dst.flip();
}
}
}