public void UnSubscribe()
{
WaitClientRunning();
if (!_running)
{
return;
}
try
{
var unsub = new Unsub()
{
Destination = _clientIdentity.Destination,
ClientId = _clientIdentity.ClientId.ToString(),
};
var pack = new Packet()
{
Type = PacketType.Unsubscription,
Body = unsub.ToByteString()
}.ToByteArray();
WriteWithHeader(pack);
var p = Packet.Parser.ParseFrom(ReadNextPacket());
var ack = Com.Alibaba.Otter.Canal.Protocol.Ack.Parser.ParseFrom(p.Body);
if (ack.ErrorCode > 0)
{
throw new CanalClientException($"failed to unSubscribe with reason: {ack.ErrorMessage}");
}
}
catch (IOException e)
{
throw new CanalClientException(e.Message, e);
}
}
public async Task UnSubscribe_ShouldBe_Success()
{
InitClient();
await HandShake_ShouldBe_Success();
await Auth_ShouldBe_Success();
await Subscribe_ShouldBe_Success();
var data = new Unsub()
{
Destination = Settings.Destination,
ClientId = Settings.ClientId,
Filter = string.IsNullOrEmpty(Settings.Filter) ? ".*\\..*" : Settings.Filter
};
var pack = new Packet()
{
Type = PacketType.Subscription,
Body = data.ToByteString()
}.ToByteArray();
await _client.WritePacketAsync(pack);
var p = await _client.ReadPacketAsync();
p.ValidateAck();
}
/// <summary>
/// UnSubscribe. If you need to unsubscribe, you should stop receiving data first.
/// </summary>
/// <param name="filter">UnSubscribe filter(Optional, default value is '.*\\..*')</param>
/// <returns></returns>
public async Task UnSubscribeAsync(string filter = ".*\\..*")
{
ValidateState(ConnectionState.Subscribed, nameof(UnSubscribeAsync));
//Unsub data
var data = new Unsub()
{
Destination = _options.Destination,
ClientId = _options.ClientId,
Filter = filter
};
var pack = new Packet()
{
Type = PacketType.Subscription,
Body = data.ToByteString()
}.ToByteArray();
await _client.WritePacketAsync(pack);
var p = await _client.ReadPacketAsync();
p.ValidateAck();
SetConnectionState(ConnectionState.Unsubscribed);
_logger.LogInformation($"UnSubscribe {filter} success.");
}
