/** {@inheritDoc} */
@Override
public byte[] getBytes(short protocolVersion) {
/*
* The message is stored in the form:
* <message type><requested status><new status>
*/
byte[] encodedMsg = new byte[3];
/* Put the type of the operation */
encodedMsg[0] = ReplicationMsg.MSG_TYPE_CHANGE_STATUS;
/* Put the requested status */
encodedMsg[1] = requestedStatus.getValue();
/* Put the requested status */
encodedMsg[2] = newStatus.getValue();
return encodedMsg;
}
/**
* Creates a new ChangeStatusMsg from its encoded form.
*
* @param encodedMsg The byte array containing the encoded form of the ChangeStatusMsg.
* @throws DataFormatException If the byte array does not contain a valid encoded form of the
* ChangeStatusMsg.
*/
public ChangeStatusMsg(byte[] encodedMsg) throws DataFormatException {
/*
* The message is stored in the form:
* <message type><requested status><new status>
*/
/* First byte is the type */
if (encodedMsg[0] != ReplicationMsg.MSG_TYPE_CHANGE_STATUS) {
throw new DataFormatException("byte[] is not a valid msg");
}
try {
/* Then the requested status */
requestedStatus = ServerStatus.valueOf(encodedMsg[1]);
/* Then the new status */
newStatus = ServerStatus.valueOf(encodedMsg[2]);
} catch (IllegalArgumentException e) {
throw new DataFormatException(e.getMessage());
}
}