public async Task StartAsync(CancellationToken cancellationToken)
{
try
{
_logger.LogInformation("Starting grpc server...");
await _grpcServer.StartAsync();
}
catch (Exception ex)
{
_logger.LogError(ex, $"Error initializing grpc server");
}
}
private async Task InitializeWorkersAsync()
{
var serverImpl = new FunctionRpcService(EventManager, _logger);
var server = new GrpcServer(serverImpl, ScriptOptions.MaxMessageLengthBytes);
using (_metricsLogger.LatencyEvent(MetricEventNames.HostStartupGrpcServerLatency))
{
await server.StartAsync();
}
var processFactory = new DefaultWorkerProcessFactory();
try
{
_processRegistry = ProcessRegistryFactory.Create();
}
catch (Exception e)
{
_logger.LogWarning(e, "Unable to create process registry");
}
CreateChannel channelFactory = (languageWorkerConfig, registrations, attemptCount) =>
{
return(new LanguageWorkerChannel(
ScriptOptions,
EventManager,
processFactory,
_processRegistry,
registrations,
languageWorkerConfig,
server.Uri,
_loggerFactory, // TODO: DI (FACAVAL) Pass appropriate logger. Channel facory should likely be a service.
_metricsLogger,
attemptCount));
};
_functionDispatcher = new FunctionDispatcher(EventManager, server, channelFactory, _workerConfigs, _language);
_eventSubscriptions.Add(EventManager.OfType <WorkerProcessErrorEvent>()
.Subscribe(evt =>
{
HandleHostError(evt.Exception);
}));
}