how do I get the request charge for azure function query?-CodePudding

I'm wondering if its possible to get the request charge in an azure function using cosmosdb input binding, from the below code:

        [FunctionName("RecipientRead")]
        public static async Task<IActionResult> Run(
            [HttpTrigger(AuthorizationLevel.Anonymous, "get", Route = "recipient/{partitionKey}/{id}")] HttpRequest req,
            [CosmosDB(
                databaseName: "RecipientDatabase",
                collectionName: "RecipientCollection",
                ConnectionStringSetting = "CosmosDbConnectionString",
                Id = "{id}",
                PartitionKey = "{partitionKey}")] Recipient recipient,
            ILogger log)
        {
            log.LogInformation("C# HTTP trigger function processed a request.");

            return new OkObjectResult(recipient);
        }

I am able to get it this way:

[FunctionName("RecipientRead")]
        public static async Task<IActionResult> Run(
            [HttpTrigger(AuthorizationLevel.Anonymous, "get", Route = "recipient/{partitionKey}/{id}")] HttpRequest req,
             [CosmosDB(
                databaseName: "RecipientDatabase",
                collectionName: "RecipientCollection",
                ConnectionStringSetting = "CosmosDbConnectionString",
                Id = "{id}",
                PartitionKey = "{partitionKey}")] Recipient rt,
            ILogger log)
        {
            log.LogInformation("C# HTTP trigger function processed a request.");
            
            CosmosClient client = new CosmosClient("AccountEndpoint=https://localhost:8081/;AccountKey=C2y6yDjf5/R ob0N8A7Cgv30VRDJIWEHLM 4QDU5DE2nQ9nDuVTqobD4b8mGGyPMbIZnqyMsEcaGQy67XIw/Jw==", new CosmosClientOptions() { ApplicationName = "CosmosDBDotnetQuickstart" });
            Database db = client.GetDatabase("RecipientDatabase");
            Container c = db.GetContainer("RecipientCollection");

            ItemResponse<Recipient> r = await c.ReadItemAsync<Recipient>("1", new PartitionKey("1"));

            double rc = r.RequestCharge;

            return new OkObjectResult("ok");
        }

CodePudding user response：

Currently there is no way to obtain it based on Functions API contracts.

Please do not create your own CosmosClient instance inside the Function execution (see https://docs.microsoft.com/en-us/azure/azure-functions/manage-connections?tabs=csharp#azure-cosmos-db-clients), instead, leverage the binding:

[CosmosDB(
                databaseName: "RecipientDatabase",
                collectionName: "RecipientCollection",
                ConnectionStringSetting = "CosmosDbConnectionString")] DocumentClient client,

Or if you use the 4.X Extension:

[CosmosDB(
                databaseName: "RecipientDatabase",
                containerName: "RecipientCollection",
                Connection= "CosmosDbConnectionString")] CosmosClient client,

Or you can decide to leverage Azure Functions DI https://github.com/Azure/azure-cosmos-dotnet-v3/tree/master/Microsoft.Azure.Cosmos.Samples/Usage/AzureFunctions