/// <summary>
/// Fetch data from Canal Server, but have no auto Ack
/// </summary>
/// <param name="fetchSize">Fetch data Size. If you set the value to null or less than or equal to 0, the value will be reset to 1000. </param>
/// <param name="timeout">Fetch data timeout. If you set the value to null or less than or equal to 0, the value will be reset to -1. -1 means no timeout.</param>
/// <param name="timeOutUnit">Timeout unit. Default value is <see cref="FetchDataTimeoutUnitType.Millisecond"/>.</param>
/// <returns></returns>
public async Task <Message> GetWithoutAckAsync(int fetchSize, long?timeout, FetchDataTimeoutUnitType timeOutUnit = FetchDataTimeoutUnitType.Millisecond)
{
ValidateState(ConnectionState.Subscribed, nameof(GetWithoutAckAsync));
var size = fetchSize <= 0 ? 1000 : fetchSize;
var time = (timeout == null || timeout < 0) ? -1 : timeout;
var get = new Get()
{
AutoAck = false,
Destination = _options.Destination,
ClientId = _options.ClientId,
FetchSize = size,
Timeout = (long)time,
Unit = (int)timeOutUnit
};
var pack = new Packet()
{
Type = PacketType.Get,
Body = get.ToByteString()
}.ToByteArray();
await _client.WritePacketAsync(pack);
var p = await _client.ReadPacketAsync();
return(DeserializeMessage(p));
}
/// <summary>
/// Fetch data from Canal Server, have auto Ack
/// </summary>
/// <param name="fetchSize">Fetch data Size. If you set the value to null or less than or equal to 0, the value will be reset to 1000. </param>
/// <param name="timeout">Fetch data timeout. If you set the value to null or less than or equal to 0, the value will be reset to -1. -1 means no timeout.</param>
/// <param name="timeOutUnit">Timeout unit. Default value is <see cref="FetchDataTimeoutUnitType.Millisecond"/>.</param>
/// <returns></returns>
public async Task <Message> GetAsync(int fetchSize, long?timeout,
FetchDataTimeoutUnitType timeOutUnit = FetchDataTimeoutUnitType.Millisecond)
{
var message = await GetWithoutAckAsync(fetchSize, timeout, timeOutUnit);
await AckAsync(message.Id);
return(message);
}
/// <summary>
/// Fetch data from Canal Server, but have no auto Ack
/// </summary>
/// <param name="fetchSize">Fetch data Size. If you set the value to null or less than or equal to 0, the value will be reset to 1000. </param>
/// <param name="timeout">Fetch data timeout. If you set the value to null or less than or equal to 0, the value will be reset to -1. -1 means no timeout.</param>
/// <param name="timeOutUnit">Timeout unit. Default value is <see cref="FetchDataTimeoutUnitType.Millisecond"/>.</param>
/// <returns></returns>
public Task <Message> GetWithoutAckAsync(int fetchSize, long?timeout,
FetchDataTimeoutUnitType timeOutUnit = FetchDataTimeoutUnitType.Millisecond)
{
return(_currentConn.GetWithoutAckAsync(fetchSize, timeout));
}
