Hi,
i have a question regarding async running methods.
This is a examplecode of a GrainMethod:
public Task GrainMethod()
{
_anotherGrain = GrainFactory.GetGrain<IBasicMeasurementDevice>(guid);
_anotherGrain.AnotherGrainMethod().ContinueWith(task =>
{
//modify private members in Grain;
}, TaskContinuationOptions.OnlyOnFaulted);}
I want to run the "AnotherGrain" Method without awaiting for it. But if there occurs a exception, I want to modifie the state of the caller grain.
Could this solution lead to race conditions?
ok, my error was because of this line https://github.com/dotnet/orleans/blob/master/src/AdoNet/Orleans.Persistence.AdoNet/MySQL-Persistence.sql#L92 though the exception message was saying there's wrong syntax in a diffrent location omg, thanks all :D
@COCPORN
@sergeybykov Yes, it was hyperbole from me. About the buckets, perhaps I've misunderstood how they work. It looks to just be sorted on expiry time, and then I suppose any grain that has activity moves itself to another bucket based on the time to live configuration. I could take a stab at implementing my suggestion, as I think the amount of work needed to have something that is useful (or can at least be evaluated for usefulness) isn't that big.
Yes, when a grain is invoked, it gets moved to the most recent bucket, unless it's already there. If you are willing to take a stab at it, we'll be happy to help.
@PanuOksala_twitter http://dotnet.github.io/orleans/Documentation/clusters_and_clients/heterogeneous_silos.html says: "All silos should reference interfaces of all grain types of the cluster, but grain classes should only be referenced by the silos that will host them." That also implies that any serializable types that could be sent as arguments should be referenced by all silos. Maybe worth adding such a statement to the doc to prevent confusion.
Ref the docs on external tasks: https://dotnet.github.io/orleans/Documentation/grains/external_tasks_and_grains.html I'm assuming from reading that I could use this method to call out from a grain to a very-long-running-task (like a Python interpreter training an ML model) and have it periodically call back into a grain?
(Just want to check before writing a bunch of code :-))
That sounds great!
thank you!
@Zeroshi I wonder... :) I'm currently actually looking a printing shop that can help me produce a pdf with the right color pallette information and help select choosing the right material (likely paper) and finishes. I've been thinking fluorescent green edge color and maybe similar components or metallic (just metallic or holograhic) elements on the surface. The current design is like
and requires fairly sophisticated printing already. :D I've been contacting places like https://publicide.com/ if they can help.
The impetus for this that I've been in meetings/parties in embassies or multilateral investment banks and especially in Asia people may have fairly finished looking cards. I can't just hand casually something that looks like if the price was the most important factor and is like toilet paper in comparison. :D
@ashtonkj Maybe that shows some reasons about the finance discussion back in the day. You may find https://wdbe2019.exordo.com/programme/presentation/59 interesting (see pptx and speaker notes for more details). :)
Will check it out
And I suck with Illustrator. Currently I'm pushing stuff to my little brother (programmer, but fluent with Photoshop). I've also been looking at Fiverr etc. if someone could do the aforementioned color palette things etc., but heck, even people doing business card design often do not seem to understand RGB glow from the screen is the opposite of "CMYK" reflection from a physical surface.
@ashtonkj_twitter You may find http://www.oecd.org/going-digital/topics/blockchain/the-tokenisation-of-assets-and-potential-implications-for-financial-markets.htm interesting also, or https://github.com/lumoin/circomy. I'd need to actually push updates to the doc at some point in the near future. Though I'm off to tour in Europe for about 1.5 weeks soon discussing about these issues so have to wait. :)
@ashtonkj_twitter Well, we are self-funded so I need to take days off from a paying job. But it has been a blast during the past few years. It appears there's a lot of demand on what we're working on. Probably need to go out more and find someone willing to join a good cause and be able to program. :) Off to the gym now!
I've got my grain placement going, but everything's stopped working now :( I think the vast majority of calls should be in-silo. Can I see what calls are cross-silo? I'm suffering from Orleans producing too much debugging information but I can't see anything useful.
Exception while calling IQueueAdapter.CreateNewReceiver.
System.NullReferenceException: Object reference not set to an instance of an object.
at OrleansAWSUtils.Storage.SQSStorage.CreateClient() in D:\build\agent\_work\23\s\src\AWS\Orleans.Streaming.SQS\Storage\SQSStorage.cs:line 86
at OrleansAWSUtils.Streams.SQSAdapterReceiver.Create(SerializationManager serializationManager, ILoggerFactory loggerFactory, QueueId queueId, String dataConnectionString, String serviceId) in D:\build\agent\_work\23\s\src\AWS\Orleans.Streaming.SQS\Streams\SQSAdapterReceiver.cs:line 30
at OrleansAWSUtils.Streams.SQSAdapter.CreateReceiver(QueueId queueId) in D:\build\agent\_work\23\s\src\AWS\Orleans.Streaming.SQS\Streams\SQSAdapter.cs:line 39
at Orleans.Streams.PersistentStreamPullingAgent.InitializeInternal(IQueueAdapter qAdapter, IQueueAdapterCache queueAdapterCache, IStreamFailureHandler failureHandler) in D:\build\agent\_work\23\s\src\Orleans.Runtime\Streams\PersistentStream\PersistentStreamPullingAgent.cs:line 107
Is there a specific way the connection string should be specified?
I currently have something like this:
I currently have something like this:
http://localhost:4576/123456789012/test_queue