private async Task <bool> TryRecycle([NotNull] IManagedProcess managedProcess,
[CanBeNull] ServiceRegistrar serviceRegistrar)
{
_logger.LogInformation("The process {process} is due for recycling.", managedProcess);
int?ongoingRequests = await managedProcess.GetOngoingRequestCountAsync();
if (ongoingRequests > 0)
{
_logger.LogWarning(
"Process recycling is delayed due to one or more ongoing requests being processed.");
return(false);
}
// TODO: Send shutdown signal (that sets unhealthy = true and then waits another few seconds before shutting down to avoid races)
await ManagedProcessUtils.ShutDownAsync(managedProcess, serviceRegistrar,
TimeSpan.Zero);
// However, the advantage of killing is that we can re-start it straight away:
bool success = await managedProcess.StartAsync();
if (success &&
managedProcess is IServerProcess serverProcess)
{
serviceRegistrar?.Ensure(serverProcess);
}
return(success);
}
private async Task <bool> TryStart([NotNull] IManagedProcess process)
{
bool success = await process.StartAsync();
if (!success)
{
process.StartupFailureCount++;
}
else if (process is IServerProcess serverProcess)
{
ServiceRegistrar?.Ensure(serverProcess);
}
return(success);
}