/// <summary>
/// Start a new client to the parent chain
/// </summary>
/// <returns></returns>
/// <exception cref="ChainInfoNotFoundException"></exception>
private async Task CreateClientToParentChain()
{
if (!GrpcLocalConfig.Instance.ClientToParentChain)
{
return;
}
try
{
// do not use cache since configuration is managed by cluster
var parent = GrpcRemoteConfig.Instance.ParentChain;
if (parent == null || parent.Count == 0)
{
throw new ChainInfoNotFoundException("Unable to get parent chain info.");
}
_clientToParentChain =
(ClientToParentChain)CreateClient(parent.ElementAt(0).Value, parent.ElementAt(0).Key, false);
var targetHeight = GetParentChainTargetHeight();
_clientToParentChain.StartDuplexStreamingCall(_tokenSourceToParentChain.Token, targetHeight)
.ConfigureAwait(false);
_logger?.Info($"Created client to parent chain {parent.ElementAt(0).Key}");
}
catch (Exception e)
{
_logger?.Error(e, "Exception while create client to parent chain.");
throw;
}
}
/// <summary>
/// close and clear clients to parent chain
/// </summary>
public void CloseClientToParentChain()
{
_tokenSourceToParentChain?.Cancel();
_tokenSourceToParentChain?.Dispose();
//Todo: probably not needed
_clientToParentChain = null;
}
private void GrpcRemoteConfigOnConfigChanged(object sender, EventArgs e)
{
_tokenSourceToSideChain?.Cancel();
_tokenSourceToSideChain?.Dispose();
_tokenSourceToParentChain?.Cancel();
_tokenSourceToParentChain?.Dispose();
// reset
_tokenSourceToSideChain = new CancellationTokenSource();
_tokenSourceToParentChain = new CancellationTokenSource();
// client cache would be cleared since configuration has been changed
// Todo: only clear clients which is needed
_clientsToSideChains.Clear();
_clientToParentChain = null;
Init();
}