private bool CanHandlePushRequest(Context cacheContext, ContentHash hash, [NotNullWhen(true)] IPushFileHandler store)
{
if (store == null)
{
Tracer.Debug(cacheContext, $"{nameof(HandlePushFileAsync)}: Copy of {hash.ToShortString()} skipped because no stores implement {nameof(IPushFileHandler)}.");
return(false);
}
if (!store.CanAcceptContent(cacheContext, hash, out var rejectionReason))
{
Tracer.Debug(cacheContext, $"{nameof(HandlePushFileAsync)}: Copy of {hash.ToShortString()} skipped: {rejectionReason}");
return(false);
}
lock (_pushesLock)
{
if (_ongoingPushes.Count >= _ongoingPushCountLimit)
{
Tracer.Debug(cacheContext, $"{nameof(HandlePushFileAsync)}: Copy of {hash.ToShortString()} skipped because the max number of proactive pushes of '{_ongoingPushCountLimit}' is reached. OngoingPushes.Count={_ongoingPushes.Count}.");
return(false);
}
if (!_ongoingPushes.Add(hash))
{
Tracer.Debug(cacheContext, $"{nameof(HandlePushFileAsync)}: Copy of {hash.ToShortString()} skipped because another request to push it is already being handled.");
return(false);
}
}
return(true);
}
/// <nodoc />
public ContentCacheService(
ContentCacheConfiguration configuration,
IPushFileHandler pushFileHandler,
IDistributedStreamStore streamStore,
IDeploymentServiceClient client = null)
{
Configuration = configuration;
StreamStore = streamStore;
PushFileHandler = pushFileHandler;
ContentCacheRequests = new VolatileMap <string, AsyncLazy <BoolResult> >(Clock);
Client = client ?? DeploymentLauncherHost.Instance.CreateServiceClient();
DownloadQueue = new ActionQueue(configuration.DownloadConcurrency ?? Environment.ProcessorCount);
}
