从我的azure函数中获取主机密钥 [英] Retreive the host key from within my azure function

问题描述

要读取Azure功能中的应用程序"设置，我可以做

  Environment.GetEnvironmentVariable("MyVariable"，EnvironmentVariableTarget.Process); 

是否可以通过类似的方式获取主机密钥?我想根据他们使用的键来识别我的azure函数的调用方，但是讨厌在应用程序设置中拥有此键的副本

解决方案

您可以安装

To read an Application setting in Azure function I can do

Environment.GetEnvironmentVariable("MyVariable", EnvironmentVariableTarget.Process);

Is it possible to get a Host key in a similar way? I like to identify the caller of my azure function based on the key they are using but hate to have a copy of this key in Application settings

解决方案

You could install Microsoft.Azure.Management.ResourceManager.Fluent and Microsoft.Azure.Management.Fluent to do that easily. The following is the demo that how to get kudu credentials and run Key management API .I test it locally, it works correctly on my side.

For more detail, you could refer to this SO thread with C# code or use powershell to get it.

string clientId = "client id";
 string secret = "secret key";
 string tenant = "tenant id";
 var functionName ="functionName";
 var webFunctionAppName = "functionApp name";
 string resourceGroup = "resource group name";
 var credentials = new AzureCredentials(new ServicePrincipalLoginInformation { ClientId = clientId, ClientSecret = secret}, tenant, AzureEnvironment.AzureGlobalCloud);
 var azure = Azure
          .Configure()
          .Authenticate(credentials)
          .WithDefaultSubscription();

 var webFunctionApp = azure.AppServices.FunctionApps.GetByResourceGroup(resourceGroup, webFunctionAppName);
 var ftpUsername = webFunctionApp.GetPublishingProfile().FtpUsername;
 var username = ftpUsername.Split('\\').ToList()[1];
 var password = webFunctionApp.GetPublishingProfile().FtpPassword;
 var base64Auth = Convert.ToBase64String(Encoding.Default.GetBytes($"{username}:{password}"));
 var apiUrl = new Uri($"https://{webFunctionAppName}.scm.azurewebsites.net/api");
 var siteUrl = new Uri($"https://{webFunctionAppName}.azurewebsites.net");
 string JWT;
 using (var client = new HttpClient())
  {
     client.DefaultRequestHeaders.Add("Authorization", $"Basic {base64Auth}");

     var result = client.GetAsync($"{apiUrl}/functions/admin/token").Result;
     JWT = result.Content.ReadAsStringAsync().Result.Trim('"'); //get  JWT for call funtion key
   }
 using (var client = new HttpClient())
 {
    client.DefaultRequestHeaders.Add("Authorization", "Bearer " + JWT);
    var key = client.GetAsync($"{siteUrl}/admin/functions/{functionName}/keys").Result.Content.ReadAsStringAsync().Result;
  }

The output:

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