耐用的功能：从“ UsePollingFileWatcher”获取值时出错

时间：2019-01-25 18:17:53

标签： asp.net-core azure-functions azure-webjobs azure-durable-functions

这个错误刚刚开始无处不在。我在Azure中有一个持久功能，已经运行了大约6周，没有问题，上周开始出现故障。

Error getting value from 'UsePollingFileWatcher' on 'Microsoft.Extensions.FileProviders.PhysicalFileProvider'.

我在本地尝试过，并得到了相同的错误。在正常工作和现在无效之间，绝对没有代码更改。我真的很沮丧。

Newtonsoft.Json.JsonSerializationException
HResult=0x80131500
Message=Error getting value from 'UsePollingFileWatcher' on 'Microsoft.Extensions.FileProviders.PhysicalFileProvider'.
Source=Newtonsoft.Json
StackTrace:
at Newtonsoft.Json.Serialization.ExpressionValueProvider.GetValue(Object target)
at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.CalculatePropertyValues(JsonWriter writer, Object value, JsonContainerContract contract, JsonProperty member, JsonProperty property, JsonContract& memberContract, Object& memberValue)
at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeObject(JsonWriter writer, Object value, JsonObjectContract contract, JsonProperty member, JsonContainerContract collectionContract, JsonProperty containerProperty)
at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeValue(JsonWriter writer, Object value, JsonContract valueContract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerProperty)
at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeObject(JsonWriter writer, Object value, JsonObjectContract contract, JsonProperty member, JsonContainerContract collectionContract, JsonProperty containerProperty)
at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeValue(JsonWriter writer, Object value, JsonContract valueContract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerProperty)
at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeObject(JsonWriter writer, Object value, JsonObjectContract contract, JsonProperty member, JsonContainerContract collectionContract, JsonProperty containerProperty)
at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeValue(JsonWriter writer, Object value, JsonContract valueContract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerProperty)
at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeList(JsonWriter writer, IEnumerable values, JsonArrayContract contract, JsonProperty member, JsonContainerContract collectionContract, JsonProperty containerProperty)
at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeValue(JsonWriter writer, Object value, JsonContract valueContract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerProperty)
at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeObject(JsonWriter writer, Object value, JsonObjectContract contract, JsonProperty member, JsonContainerContract collectionContract, JsonProperty containerProperty)
at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeValue(JsonWriter writer, Object value, JsonContract valueContract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerProperty)
at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeList(JsonWriter writer, IEnumerable values, JsonArrayContract contract, JsonProperty member, JsonContainerContract collectionContract, JsonProperty containerProperty)
at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeValue(JsonWriter writer, Object value, JsonContract valueContract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerProperty)
at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.Serialize(JsonWriter jsonWriter, Object value, Type objectType)
at Newtonsoft.Json.JsonSerializer.SerializeInternal(JsonWriter jsonWriter, Object value, Type objectType)
at DurableTask.Core.Serializing.JsonDataConverter.Serialize(Object value, Boolean formatted)
at DurableTask.Core.Serializing.JsonDataConverter.Serialize(Object value)
at DurableTask.Core.TaskOrchestrationContext.<ScheduleTaskInternal>d__15.MoveNext()
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at DurableTask.Core.TaskOrchestrationContext.<ScheduleTaskToWorker>d__14`1.MoveNext()
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at DurableTask.Core.TaskOrchestrationContext.<ScheduleTask>d__13`1.MoveNext()
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.Azure.WebJobs.DurableOrchestrationContext.<CallDurableTaskFunctionAsync>d__52`1.MoveNext()
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.GetResult()
at DGS.Interfaces.IAM.Functions.IdentityAccessManager.<OrchestrateUpdateDirectory>d__12.MoveNext() in C:\...\IAM.UpdateDirectory.cs:line 141

Inner Exception 1:
InvalidOperationException: Cannot modify UsePollingFileWatcher once file watcher has been initialized.

1 个答案:

答案 0 :(得分：1)

调用堆栈表明，当“持久任务框架”尝试序列化要发送给活动功能的某些输入时，将引发异常。我的猜测是，您要发送的对象具有一个复杂的属性图，该图在某处具有指向PhysicalFileProvider的指针，该指针不可序列化。

通过OrchestrateUpdateDirectory方法检查要发送给活动函数的对象的类型，并查看它是否具有某些意外的属性。

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