private RequestDelegate CreateStack(CancellationToken cancellationToken)
{
var stackBuilder = new StackBuilder(_services);
if (_sqlOptions.ConnectionString != null)
{
stackBuilder.Use <SqlServerMiddleware>();
}
else
{
_logger.LogWarning("No ConnectionString found, disabling SqlServer injection");
}
return(stackBuilder
.Use(next =>
{
return async(packet) =>
{
if (!await _chatHub.TryWriteChatAsync(packet.Raw, cancellationToken))
{
_logger.LogWarning("Unable to write {RawCount} bytes to chat client", packet.Raw.Length);
}
await next(packet);
};
})
.Build());
}
public DeviceServer(ProtocolFactory protocolFactory, IServiceProvider services, FanoutHub fanoutHub, IOptions <ProxyOptions> options, IOptions <SqlServerOptions> sqlOptions, ILogger <DeviceServer> logger)
{
_fanoutHub = fanoutHub;
_options = options.Value;
_logger = logger;
var stackBuilder = new StackBuilder(services);
if (sqlOptions.Value.ConnectionString != null)
{
stackBuilder.Use <SqlServerMiddleware>();
}
var stack = stackBuilder.Build();
_protocol = protocolFactory.Create(_options.ProtocolName, stack);
}