public async Task StartWorkerAsync(DFrameOptions options, int processCount, IServiceProvider provider, IFailSignal failSignal, CancellationToken cancellationToken)
{
_failSignal = failSignal;
Console.WriteLine($"scale out workers {_env.ScalingType}. {_ns}/{_env.Name} ({processCount} pods)");
// confirm kubernetes master can connect with cluster api.
Console.WriteLine($"checking cluster Endpoint health.");
var healthy = await _operations.TryConnectClusterEndpointAsync(_env.ClusterEndpointHealthRetry, TimeSpan.FromSeconds(_env.ClusterEndpointHealthInterval), cancellationToken);
if (!healthy)
{
Console.WriteLine($"cluster endpoint is unhealthy, quiting scale out.");
_failSignal.TrySetException(new KubernetesException("Could not connect to Kubernetes Cluster Endpoint. Make sure pod can communicate with cluster api."));
}
else
{
// create worker resource
switch (_env.ScalingType)
{
case ScalingType.Deployment:
await ScaleoutDeploymentAsync(processCount, options.WorkerConnectToHost, options.WorkerConnectToPort, cancellationToken);
break;
case ScalingType.Job:
await ScaleoutJobAsync(processCount, options.WorkerConnectToHost, options.WorkerConnectToPort, cancellationToken);
break;
default:
throw new ArgumentOutOfRangeException(nameof(ScalingType));
}
}
}
async Task Core(IServiceProvider provider, DFrameOptions options, CancellationToken cancellationToken)
{
// create shim of ConsoleApp
try
{
var logger = provider.GetService(typeof(ILogger <DFrameWorkerApp>));
var logger2 = provider.GetService(typeof(ILogger <ConsoleAppFramework.ConsoleAppEngine>));
var app = new DFrameWorkerApp((ILogger <DFrameWorkerApp>)logger, provider, options);
app.Context = new ConsoleAppFramework.ConsoleAppContext(new string[0], DateTime.UtcNow, cancellationToken, (ILogger <ConsoleAppFramework.ConsoleAppEngine>)logger2);
await app.Main();
}
catch (Exception ex)
{
failSignal.TrySetException(ex);
}
}
async void WriteAll(ProcessAsyncEnumerable e)
{
try
{
await foreach (var item in e.WithCancellation(cts.Token))
{
Console.WriteLine(item);
}
}
catch (Exception ex)
{
if (ex is OperationCanceledException)
{
return;
}
failSignal.TrySetException(ex);
}
}