class MultiCastMessageHandler extends IMHandler<WFCMessage.MultiCastMessage> {


    @Override
    public ErrorCode action(ByteBuf ackPayload, String clientID, String fromUser, ProtoConstants.RequestSourceType requestSourceType, WFCMessage.MultiCastMessage multiCastMessage, Qos1PublishHandler.IMCallback callback) {<FILL_FUNCTION_BODY>}

}

        boolean isAdmin = requestSourceType == ProtoConstants.RequestSourceType.Request_From_Admin;
        ErrorCode errorCode = ErrorCode.ERROR_CODE_SUCCESS;
        if (!isAdmin) {
            return ErrorCode.ERROR_CODE_NOT_RIGHT;
        }

        long timestamp = System.currentTimeMillis();
        long messageId = 0;
        try {
            messageId = MessageShardingUtil.generateId();
        } catch (Exception e) {
            e.printStackTrace();
            return ErrorCode.ERROR_CODE_SERVER_ERROR;
        }
        WFCMessage.Message message = WFCMessage.Message.newBuilder()
            .setContent(multiCastMessage.getContent())
            .setConversation(WFCMessage.Conversation.newBuilder().setTarget(fromUser).setType(ConversationType_Private).setLine(multiCastMessage.getLine()).build())
            .setFromUser(fromUser)
            .setMessageId(messageId)
            .setServerTimestamp(timestamp)
            .build();

        saveAndMulticast(fromUser, clientID, message, multiCastMessage.getToList());

        ackPayload = ackPayload.capacity(20);
        ackPayload.writeLong(messageId);
        ackPayload.writeLong(timestamp);

        return errorCode;
    
<methods>public void <init>() ,public abstract cn.wildfirechat.common.ErrorCode action(ByteBuf, java.lang.String, java.lang.String, cn.wildfirechat.proto.ProtoConstants.RequestSourceType, cn.wildfirechat.proto.WFCMessage.MultiCastMessage, io.moquette.spi.impl.Qos1PublishHandler.IMCallback) ,public void afterAction(java.lang.String, java.lang.String, java.lang.String, io.moquette.spi.impl.Qos1PublishHandler.IMCallback) ,public void doHandler(java.lang.String, java.lang.String, java.lang.String, byte[], io.moquette.spi.impl.Qos1PublishHandler.IMCallback, cn.wildfirechat.proto.ProtoConstants.RequestSourceType) ,public static io.moquette.spi.impl.MessagesPublisher getPublisher() ,public static void init(io.moquette.spi.IMessagesStore, io.moquette.spi.ISessionsStore, io.moquette.spi.impl.MessagesPublisher, cn.wildfirechat.server.ThreadPoolExecutorWrapper, io.moquette.server.Server) ,public cn.wildfirechat.common.ErrorCode preAction(java.lang.String, java.lang.String, java.lang.String, io.moquette.spi.impl.Qos1PublishHandler.IMCallback, cn.wildfirechat.proto.ProtoConstants.RequestSourceType) <variables>protected static final Logger LOG,protected static java.lang.String actionName,private Class#RAW dataCls,private static win.liyufan.im.RateLimiter mLimitCounter,protected static io.moquette.server.Server mServer,private static cn.wildfirechat.server.ThreadPoolExecutorWrapper m_imBusinessExecutor,protected static io.moquette.spi.IMessagesStore m_messagesStore,protected static io.moquette.spi.ISessionsStore m_sessionsStore,private java.lang.reflect.Method parseDataMethod,protected static io.moquette.spi.impl.MessagesPublisher publisher