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I am working on migration of azure function from .net core 3.1 to dot net 8 and also migration from in-process to isolated worker process. In the .net core 3.1 version of function, we are using 'RewindAsync' function of IDurableOrchestrationClient from Microsoft.Azure.WebJobs.Extensions.DurableTask package. But this 'RewindAsync' function is not available in isolated worker model packages. How should we handle this in .net 8 version of function?
@Sneha N. Patil I'm trying to find any details around this and will post once I find anything.
Hey @Sneha N. Patil
So, this missing feature is being tracked in Rewind support · Issue #21 · microsoft/durabletask-dotnet (github.com). As a workaround though, you can use the built in HTTP API, HTTP APIs in Durable Functions - Azure Functions | Microsoft Learn, until the SDK properly supports it.
@Ryan Hill Will the HTTP API for the rewind feature be compatible with version 4 of Azure Functions? The documentation currently only mentions support for versions 1.x and 2.x: https://learn.microsoft.com/en-us/azure/azure-functions/durable/durable-functions-http-api#rewind-instance-preview
It should @Sneha N. Patil. If you run into any issues, please let me know.
@Ryan Hill I am getting 202 (Accepted) in response on calling rewind api but when I call get status api for the same instance id, it is giving below error:
"output": {
"message": "Function 'TestOrchestration' failed with an unhandled exception.",
"details": "Microsoft.Azure.WebJobs.Host.FunctionInvocationException: Exception while executing function: Functions.MailFulfillmentOrchestration\r\n ---> System.InvalidOperationException: Exception binding parameter 'context'\r\n ---> System.ArgumentNullException: Value cannot be null. (Parameter 'value')\r\n at Google.Protobuf.ProtoPreconditions.CheckNotNull[T](T value, String name)\r\n at Microsoft.DurableTask.Protobuf.GenericEvent.set_Data(String value)\r\n at Microsoft.Azure.WebJobs.Extensions.DurableTask.ProtobufUtils.ToHistoryEventProto(HistoryEvent e) in /_/src/WebJobs.Extensions.DurableTask/ProtobufUtils.cs:line 225\r\n at System.Linq.Enumerable.SelectListIterator`2.MoveNext()\r\n at Google.Protobuf.Collections.RepeatedField`1.AddRange(IEnumerable`1 values)\r\n at Google.Protobuf.Collections.RepeatedField`1.Add(IEnumerable`1 values)\r\n at Microsoft.Azure.WebJobs.Extensions.DurableTask.OrchestrationTriggerAttributeBindingProvider.OrchestrationTriggerBinding.BindAsync(Object value, ValueBindingContext context) in /_/src/WebJobs.Extensions.DurableTask/Bindings/OrchestrationTriggerAttributeBindingProvider.cs:line 168\r\n at Microsoft.Azure.WebJobs.Host.Indexers.FunctionIndexer.TriggerWrapper.BindAsync(Object value, ValueBindingContext context) in D:\\a\\_work\\1\\s\\src\\Microsoft.Azure.WebJobs.Host\\Indexers\\FunctionIndexer.cs:line 534\r\n at Microsoft.Azure.WebJobs.Host.Triggers.TriggeredFunctionBinding`1.BindCoreAsync(ValueBindingContext context, Object value, IDictionary`2 parameters) in D:\\a\\_work\\1\\s\\src\\Microsoft.Azure.WebJobs.Host\\Triggers\\TriggeredFunctionBinding.cs:line 57\r\n --- End of inner exception stack trace ---\r\n at Microsoft.Azure.WebJobs.Host.Executors.DelayedException.Throw() in D:\\a\\_work\\1\\s\\src\\Microsoft.Azure.WebJobs.Host\\Executors\\DelayedException.cs:line 27\r\n at Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor.ParameterHelper.PrepareParametersAsync() in D:\\a\\_work\\1\\s\\src\\Microsoft.Azure.WebJobs.Host\\Executors\\FunctionExecutor.cs:line 922\r\n at Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor.ExecuteWithWatchersAsync(IFunctionInstanceEx instance, ParameterHelper parameterHelper, ILogger logger, CancellationTokenSource functionCancellationTokenSource) in D:\\a\\_work\\1\\s\\src\\Microsoft.Azure.WebJobs.Host\\Executors\\FunctionExecutor.cs:line 551\r\n at Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor.ExecuteWithLoggingAsync(IFunctionInstanceEx instance, FunctionStartedMessage message, FunctionInstanceLogEntry instanceLogEntry, ParameterHelper parameterHelper, ILogger logger, CancellationToken cancellationToken) in D:\\a\\_work\\1\\s\\src\\Microsoft.Azure.WebJobs.Host\\Executors\\FunctionExecutor.cs:line 368\r\n --- End of inner exception stack trace ---\r\n at Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor.ExecuteWithLoggingAsync(IFunctionInstanceEx instance, FunctionStartedMessage message, FunctionInstanceLogEntry instanceLogEntry, ParameterHelper parameterHelper, ILogger logger, CancellationToken cancellationToken) in D:\\a\\_work\\1\\s\\src\\Microsoft.Azure.WebJobs.Host\\Executors\\FunctionExecutor.cs:line 368\r\n at Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor.TryExecuteAsync(IFunctionInstance functionInstance, CancellationToken cancellationToken) in D:\\a\\_work\\1\\s\\src\\Microsoft.Azure.WebJobs.Host\\Executors\\FunctionExecutor.cs:line 158"
},
Rewind url -[http://localhost:7071/runtime/webhooks/durabletask/instances/91e13e90f430bb9b0f202e/rewind?code=E48C_r3KqVyUBBthk4XYxW1gnQ6lz6==&reason=error&connection=AzureWebJobsStorage&taskHub=testTaskHub]
Am I missing anything? Could you please help me on this issue?
@Sneha N. Patil this may be bug in the rewind feature. It would be best to open to a GitHub issue on the repo. Make sure you include specific SDK and .NET versions you're using. If you can capture a dump from your function app, that may help as well.