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我开始修补 Azure SignalR,但遇到了 negiotate 触发器的问题。我遵循了这个官方的微软指南:

这是我的代码:

local.settings.json

{
  "IsEncrypted": false,
  "Values": {
    "AzureSignalRConnectionString": "Endpoint=https://my.service.signalr.net;AccessKey=myKey=;Version=1.0;",
    "FUNCTIONS_WORKER_RUNTIME": "node"
  },
  "Host": {
    "LocalHttpPort": 7071,
    "CORS": "*",
    "CORSCredentials": true
  }
}

函数.json

{
  "disabled": false,
  "bindings": [
    {
      "authLevel": "anonymous",
      "type": "httpTrigger",
      "direction": "in",
      "methods": [
        "get"
      ],
      "name": "req",
      "route": "negotiate"
    },
    {
      "type": "http",
      "direction": "out",
      "name": "res"
    },
    {
      "type": "SignalRConnectionInfo",
      "name": "connectionInfo",
      "hubName": "jitsi",
      "ConnectionStringSetting": "Endpoint=https://my.service.signalr.net;AccessKey=myKey;Version=1.0;",
      "direction": "in"
    }
  ]
}

index.js

module.exports = async function (context, req, connectionInfo) {
    context.res.body = connectionInfo;
};

它在本地运行良好(不幸的是,这就是指南结束的地方)。但是,如果我访问协商 http-trigger 的 URL,我会得到“内部服务器错误 500”。日志包含以下输出。

2020-04-23T08:47:32  Welcome, you are now connected to log-streaming service. The default timeout is 2 hours. Change the timeout with the App Setting SCM_LOGSTREAM_TIMEOUT (in seconds). 
2020-04-23T08:47:52.070 [Information] Executing 'Functions.jitsiNegotiate' (Reason='This function was programmatically called via the host APIs.', Id=2b791d95-3775-47bb-ade1-ac9005929f61)
2020-04-23T08:47:52.238 [Error] Executed 'Functions.jitsiNegotiate' (Failed, Id=2b791d95-3775-47bb-ade1-ac9005929f61)
Unable to resolve the value for property 'SignalRConnectionInfoAttribute.ConnectionStringSetting'. Make sure the setting exists and has a valid value.

正如您在我的代码中看到的那样,我确实提供了ConnectionStringSetting.

有些人认为这是由于ConnectionStringSetting. 其他人说要编辑local.settings.json。这些都对我没有任何影响,我找不到关于这个问题的任何有用信息。

编辑 1:我设置"hubName":"jitsi". 作为jitsi我的 SignalR 服务的名称。如'jitsi.service.signalr.net'。我不确定这是否正确。也许这就是问题的一部分?

编辑2:我尝试没有设置任何值ConnectionStringSetting(使其变为默认值)。给了我同样的错误。我也完全删除了任何内容,local.settings.json然后重新部署,看看会发生什么。与以前相同的行为。我的猜测是该服务仅将文件用于本地使用(因此得名)。因此,在local.settings.json为空的情况下,没有其他地方可以定义AzureSignalRConnectionString. 我做了一些挖掘,显然(根据这个线程)你应该在下面定义它

“配置”->“应用程序设置”

所以我创建了一个新设置

名称:Azure__SignalR__ConnectionString

值:myMaskedConnectionString

这导致了以下错误:

The SignalR Service connection string must be set either via an 'AzureSignalRConnectionString' app setting, via an 'AzureSignalRConnectionString' environment variable, or directly in code via SignalROptions.ConnectionString or SignalRConnectionInfoAttribute.ConnectionStringSetting.
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1 回答 1

2

我找到了解决这个问题的方法:

起初我很困惑,并认为local.settings.json它将作为该功能的实时/非本地版本的配置。事实并非如此。它仅用于本地执行(可以通过文件名猜到)

所以问题仍然存在:在哪里/如何在 Azure 门户中编辑所需的设置?

答:首页 -> 所有服务 -> Function-App -> MyFunctionApp -> 平台功能 -> 配置 -> 应用程序设置 -> 新建应用程序设置

名称:AzureSignalRConnectionString 值 MyMaskedConnectionString

然后function.json像这样:

{
  "disabled": false,
  "bindings": [
    {
      "authLevel": "anonymous",
      "type": "httpTrigger",
      "direction": "in",
      "methods": [
        "get"
      ],
      "name": "req",
      "route": "negotiate"
    },
    {
      "type": "http",
      "direction": "out",
      "name": "res"
    },
    {
      "type": "SignalRConnectionInfo",
      "name": "connectionInfo",
      "hubName": "jitsi",
      "direction": "in",
      "connectionStringSetting": "AzureSignalRConnectionString"
    }
  ]
}

有了这些设置,它现在对我有用。

于 2020-04-23T13:24:46.857 回答