持久函数异常："Unable to find an Azure Storage connection string to use for this binding."

Question

我有一个具有持久函数（以及一些非持久函数）的 Function App，我收到一个 InvalidOperationException，上面写着：Unable to find an Azure Storage connection string to use for this binding.

这是堆栈跟踪：

System.InvalidOperationException:
  at Microsoft.Azure.WebJobs.Extensions.DurableTask.DurableTaskExtension.GetOrchestrationServiceSettings (Microsoft.Azure.WebJobs.Extensions.DurableTask, Version=1.5.0.0, Culture=neutral, PublicKeyToken=null)
  at Microsoft.Azure.WebJobs.Extensions.DurableTask.DurableTaskExtension.Microsoft.Azure.WebJobs.Host.Config.IExtensionConfigProvider.Initialize (Microsoft.Azure.WebJobs.Extensions.DurableTask, Version=1.5.0.0, Culture=neutral, PublicKeyToken=null)
  at Microsoft.Azure.WebJobs.Host.Executors.JobHostConfigurationExtensions.InvokeExtensionConfigProviders (Microsoft.Azure.WebJobs.Host, Version=2.3.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
  at Microsoft.Azure.WebJobs.Host.Executors.JobHostConfigurationExtensions.CreateStaticServices (Microsoft.Azure.WebJobs.Host, Version=2.3.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
  at Microsoft.Azure.WebJobs.JobHost.InitializeServices (Microsoft.Azure.WebJobs.Host, Version=2.3.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
  at Microsoft.Azure.WebJobs.Script.Utility.CreateMetadataProvider (Microsoft.Azure.WebJobs.Script, Version=1.0.0.0, Culture=neutral, PublicKeyToken=nullMicrosoft.Azure.WebJobs.Script, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null: C:\projects\azure-webjobs-sdk-script\src\WebJobs.Script\Utility.csMicrosoft.Azure.WebJobs.Script, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null: 362)
  at Microsoft.Azure.WebJobs.Script.ScriptHost.LoadBindingExtensions (Microsoft.Azure.WebJobs.Script, Version=1.0.0.0, Culture=neutral, PublicKeyToken=nullMicrosoft.Azure.WebJobs.Script, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null: C:\projects\azure-webjobs-sdk-script\src\WebJobs.Script\Host\ScriptHost.csMicrosoft.Azure.WebJobs.Script, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null: 966)
  at Microsoft.Azure.WebJobs.Script.ScriptHost.Initialize (Microsoft.Azure.WebJobs.Script, Version=1.0.0.0, Culture=neutral, PublicKeyToken=nullMicrosoft.Azure.WebJobs.Script, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null: C:\projects\azure-webjobs-sdk-script\src\WebJobs.Script\Host\ScriptHost.csMicrosoft.Azure.WebJobs.Script, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null: 299)
  at Microsoft.Azure.WebJobs.Script.ScriptHostManager.RunAndBlock (Microsoft.Azure.WebJobs.Script, Version=1.0.0.0, Culture=neutral, PublicKeyToken=nullMicrosoft.Azure.WebJobs.Script, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null: C:\projects\azure-webjobs-sdk-script\src\WebJobs.Script\Host\ScriptHostManager.csMicrosoft.Azure.WebJobs.Script, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null: 177)

似乎是持久函数在抱怨缺少连接字符串。但是，我的 AzureWebJobsDashboard 应用程序设置中确实填充了连接字符串，所以我不确定它失败的原因。

Answer 1

（这个问题显示没有答案，所以我采纳了Ling的建议，在这里做了一个正确的答案）

除了 AzureWebJobsDashboard 应用程序设置之外，您还需要在 AzureWebJobsStorage 应用程序设置中指定您的 Azure 存储连接字符串。后一种应用程序设置是各种 Azure Functions 功能所必需的，包括 Durable Functions。两个应用程序设置具有相同的连接字符串是可以的。

Answer 2

此错误是由不正确的 url 引起的。如果模拟器停止，您会返回： “无法建立连接，因为目标机器主动拒绝” 参考：Create your first durable function in C#

决议：

1 - 确保 Azure 存储模拟器正在运行或重新启动它

C:\Program Files (x86)\Microsoft SDKs\Azure\Storage Emulator>AzureStorageEmulator.exe stop
Windows Azure Storage Emulator 5.10.0.0 command line tool
The storage emulator was successfully stopped.

C:\Program Files (x86)\Microsoft SDKs\Azure\Storage Emulator>AzureStorageEmulator.exe start
Windows Azure Storage Emulator 5.10.0.0 command line tool
The storage emulator was successfully started.

2：确保url是正确的。输出包含几个 urls，确保你拿一个用于statusQueryGetUri，（这是最多的可能的原因):

{"id":"57756e5133f047ed9213b3956c0268be",
"statusQueryGetUri":"http://localhost:7071/runtime/webhooks/durabletask/instances/57756e5133f047ed9213b3956c0268be?taskHub=TestHubName&connection=Storage&code=Ruk2CuiKU7yk9GM1qjalxynMwk2Bx2/KOpz78lxmPa4cNb2AtDZppw==",
"sendEventPostUri":"http://localhost:7071/runtime/webhooks/durabletask/instances/57756e5133f047ed9213b3956c0268be/raiseEvent/{eventName}?taskHub=TestHubName&connection=Storage&code=Ruk2CuiKU7yk9GM1qjalxynMwk2Bx2/KOpz78lxmPa4cNb2AtDZppw==",
"terminatePostUri":"http://localhost:7071/runtime/webhooks/durabletask/instances/57756e5133f047ed9213b3956c0268be/terminate?reason={text}&taskHub=TestHubName&connection=Storage&code=Ruk2CuiKU7yk9GM1qjalxynMwk2Bx2/KOpz78lxmPa4cNb2AtDZppw==",
"purgeHistoryDeleteUri":"http://localhost:7071/runtime/webhooks/durabletask/instances/57756e5133f047ed9213b3956c0268be?taskHub=TestHubName&connection=Storage&code=Ruk2CuiKU7yk9GM1qjalxynMwk2Bx2/KOpz78lxmPa4cNb2AtDZppw=="}

工作配置文件：

{
    "IsEncrypted": false,
  "Values": {
    "AzureWebJobsStorage": "UseDevelopmentStorage=true",
    "FUNCTIONS_WORKER_RUNTIME": "dotnet"
  }
}

Answer 3

正如其他答案所说，由于缺少 AzureWebJobsStorage 连接字符串，我遇到了异常。但是，连接字符串存在于 appsettings.Development.json 文件中...

为了让 Durable Function 项目在本地启动，连接字符串需要在 local.settings.json 文件中。

持久函数异常："Unable to find an Azure Storage connection string to use for this binding."

Durable Function exception: "Unable to find an Azure Storage connection string to use for this binding."

azure

azure-functions

azure-durable-functions