hazelcast-master/hazelcast/src/main/java/com/hazelcast/client/impl/protocol/codec/MCChangeClusterStateCodec.java
/*
 * Copyright (c) 2008-2023, 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.codec;

import com.hazelcast.client.impl.protocol.ClientMessage;
import com.hazelcast.client.impl.protocol.Generated;
import com.hazelcast.client.impl.protocol.codec.builtin.*;
import com.hazelcast.client.impl.protocol.codec.custom.*;

import javax.annotation.Nullable;

import static com.hazelcast.client.impl.protocol.ClientMessage.*;
import static com.hazelcast.client.impl.protocol.codec.builtin.FixedSizeTypesCodec.*;

/*
 * This file is auto-generated by the Hazelcast Client Protocol Code Generator.
 * To change this file, edit the templates or the protocol
 * definitions on the https://github.com/hazelcast/hazelcast-client-protocol
 * and regenerate it.
 */

/**
 * Changes the state of a cluster.
 */
@Generated("eab01501bec8203dcc47716d6fba7744")
public final class MCChangeClusterStateCodec {
    //hex: 0x200200
    public static final int REQUEST_MESSAGE_TYPE = 2097664;
    //hex: 0x200201
    public static final int RESPONSE_MESSAGE_TYPE = 2097665;
    private static final int REQUEST_NEW_STATE_FIELD_OFFSET = PARTITION_ID_FIELD_OFFSET + INT_SIZE_IN_BYTES;
    private static final int REQUEST_INITIAL_FRAME_SIZE = REQUEST_NEW_STATE_FIELD_OFFSET + INT_SIZE_IN_BYTES;
    private static final int RESPONSE_INITIAL_FRAME_SIZE = RESPONSE_BACKUP_ACKS_FIELD_OFFSET + BYTE_SIZE_IN_BYTES;

    private MCChangeClusterStateCodec() {
    }

    public static ClientMessage encodeRequest(int newState) {
        ClientMessage clientMessage = ClientMessage.createForEncode();
        clientMessage.setRetryable(false);
        clientMessage.setOperationName("MC.ChangeClusterState");
        ClientMessage.Frame initialFrame = new ClientMessage.Frame(new byte[REQUEST_INITIAL_FRAME_SIZE], UNFRAGMENTED_MESSAGE);
        encodeInt(initialFrame.content, TYPE_FIELD_OFFSET, REQUEST_MESSAGE_TYPE);
        encodeInt(initialFrame.content, PARTITION_ID_FIELD_OFFSET, -1);
        encodeInt(initialFrame.content, REQUEST_NEW_STATE_FIELD_OFFSET, newState);
        clientMessage.add(initialFrame);
        return clientMessage;
    }

    /**
     * New state of the cluster:
     * 0 - ACTIVE
     * 1 - NO_MIGRATION
     * 2 - FROZEN
     * 3 - PASSIVE
     * 4 - IN_TRANSITION (not allowed)
     */
    public static int decodeRequest(ClientMessage clientMessage) {
        ClientMessage.ForwardFrameIterator iterator = clientMessage.frameIterator();
        ClientMessage.Frame initialFrame = iterator.next();
        return decodeInt(initialFrame.content, REQUEST_NEW_STATE_FIELD_OFFSET);
    }

    public static ClientMessage encodeResponse() {
        ClientMessage clientMessage = ClientMessage.createForEncode();
        ClientMessage.Frame initialFrame = new ClientMessage.Frame(new byte[RESPONSE_INITIAL_FRAME_SIZE], UNFRAGMENTED_MESSAGE);
        encodeInt(initialFrame.content, TYPE_FIELD_OFFSET, RESPONSE_MESSAGE_TYPE);
        clientMessage.add(initialFrame);

        return clientMessage;
    }
}
