package io.vertx.mysqlclient.impl.codec;
import io.netty.buffer.ByteBuf;
import io.vertx.mysqlclient.impl.command.PingCommand;
import io.vertx.sqlclient.impl.command.CommandResponse;
class PingCommandCodec extends CommandCodec<Void, PingCommand> {
private static final int PAYLOAD_LENGTH = 1;
PingCommandCodec(PingCommand cmd) {
super(cmd);
}
@Override
void encode(MySQLEncoder encoder) {
super.encode(encoder);
sendPingCommand();
}
@Override
void decodePayload(ByteBuf payload, int payloadLength, int sequenceId) {
// we don't care what the response payload is from the server
completionHandler.handle(CommandResponse.success(null));
}
private void sendPingCommand() {
ByteBuf packet = allocateBuffer(PAYLOAD_LENGTH + 4);
// encode packet header
packet.writeMediumLE(PAYLOAD_LENGTH);
packet.writeByte(sequenceId);
// encode packet payload
packet.writeByte(CommandType.COM_PING);
sendNonSplitPacket(packet);
}
}