通过 Visual Studio 创建 Azure function 时无法连接到 Cosmos DB

Question

I am new to both Azure Functions and Cosmos DB. I am trying to set up an Azure function in my local machine that gets triggered on updates on Cosmos DB through Visual Studio.

Initially, I was getting the error Unable to resolve app setting for property CosmosDBTriggerAttribute.ConnectionStringSetting but on following this solution I am able to resolve that error, but now getting:

The listener for function 'Function1' was unable to start. System.Net.Http: No such host is known. System.Private.CoreLib: No such host is known.

Here are my local.settings.json :

{
    "IsEncrypted": false,
  "Values": {
    "AzureWebJobsStorage": "UseDevelopmentStorage=true",
    "FUNCTIONS_WORKER_RUNTIME": "dotnet",
    "connectionString": "AccountEndpoint=https://<collectionName>.documents.azure.com:443/;AccountKey=<key>"
  }
}

This is my run method if useful:

public static void Run([CosmosDBTrigger(
            databaseName: "DB-Name",
            collectionName: "CollectionName",
            ConnectionStringSetting = "String I used while setting up the project in VS",
            LeaseCollectionName = "leases")]IReadOnlyList<Document> input, ILogger log)
        {
            if (input != null && input.Count > 0)
            {
                log.LogInformation("Documents modified " + input.Count);
                log.LogInformation("First document Id " + input[0].Id);
            }
        }

Can someone help? My other question is what is Account Key in this case? I am currently using the app name in my Cosmos DB account.

Answer 1

You can find the AccountKey from Settings -> ConnectionString -> Primary Password when you click on your cosmosDB resource

and also your connectionString should be something like below,

{
  "IsEncrypted": false,
  "Values": {
    "FUNCTIONS_WORKER_RUNTIME": "dotnet",
    "CosmosDB": "AccountEndpoint=https://localhost:8081/;AccountKey=C2y6yDjf5/R+ob0N8A7Cgv30VRDJIWEHLM+4QDU5DE2nQ9nDuVTqobD4b8mGGyPMbIZnqyMsEcaGQy67XIw/Jw=="
  }
}