Azure Function App

Question

Azure Function App

Yusra Munawar 36

I have an Azure Function App that is getting and putting values to Redis. Its running fine locally but after publish, when i try to Test/Run the function, its throwing error 500 (Parameter cannot be null (Key)). Although i am passing Key and its value in Headers, the way i am calling it locally but still it is throwing error for key.
This is URL for my function
https://cookorooazure.azurewebsites.net/api/GetPutRedisCache?code=taMAk/SHwsOuKeVhoygaxJc2Dtpd9GhjW8tihm7oBlBP6AMhbQESNg==

Jaliya Udagedara 2,856 Reputation points MVP Volunteer Moderator

2022-06-08T10:18:18.927+00:00

The way you are passing the function access key is correct (The key can be included in a query string variable named code, as yours or It can also be included in an x-functions-key HTTP header)

This can be because you are missing an app setting in Azure. Can you share the code of your function please.

Yusra Munawar 36

Thankyou for reply. I have attached screen shot of how I am running my function in Azure and passing headers.
Also, this is my code for Redis function

    [FunctionName("GetPutRedisCache")]  
    public IActionResult Run(  
         [HttpTrigger(AuthorizationLevel.Function, "get", "put", Route = "GetPutRedisCache")] HttpRequest req, ILogger log)  
    {  
        var reqHeaders = req.Headers;  
        string cacheKey = reqHeaders["cacheKey"];  
        string cacheValue = reqHeaders["cacheValue"];  
        string cacheConnectionString = Environment.GetEnvironmentVariable("redisCacheConnectionString");  

        try  
        {  
            string retValue = _redisCacheAccessor.ReadWriteFromCache(cacheConnectionString, req.Method, cacheKey, cacheValue);  
            return new OkObjectResult(retValue);  
        }  
        catch (Exception e)  
        {  
            log.LogError(e.Message, e);  
            throw;  
        }  
    }

Yusra Munawar 36 Reputation points

2022-06-13T11:28:34.633+00:00
Jaliya Udagedara 2,856 Reputation points MVP Volunteer Moderator

2022-06-14T00:27:58.893+00:00

Do you have redisCacheConnectionString setup in Application Settings?

Your answer

Jaliya Udagedara 2,856 Reputation points MVP Volunteer Moderator

2022-06-08T10:18:18.927+00:00

The way you are passing the function access key is correct (The key can be included in a query string variable named code, as yours or It can also be included in an x-functions-key HTTP header)

This can be because you are missing an app setting in Azure. Can you share the code of your function please.
Yusra Munawar 36 Reputation points

2022-06-13T11:27:10.45+00:00

Thankyou for reply. I have attached screen shot of how I am running my function in Azure and passing headers.
Also, this is my code for Redis function

[FunctionName("GetPutRedisCache")] public IActionResult Run( [HttpTrigger(AuthorizationLevel.Function, "get", "put", Route = "GetPutRedisCache")] HttpRequest req, ILogger log) { var reqHeaders = req.Headers; string cacheKey = reqHeaders["cacheKey"]; string cacheValue = reqHeaders["cacheValue"]; string cacheConnectionString = Environment.GetEnvironmentVariable("redisCacheConnectionString"); try { string retValue = _redisCacheAccessor.ReadWriteFromCache(cacheConnectionString, req.Method, cacheKey, cacheValue); return new OkObjectResult(retValue); } catch (Exception e) { log.LogError(e.Message, e); throw; } }
Yusra Munawar 36 Reputation points

2022-06-13T11:28:34.633+00:00
Jaliya Udagedara 2,856 Reputation points MVP Volunteer Moderator

2022-06-14T00:27:58.893+00:00

Do you have redisCacheConnectionString setup in Application Settings?

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Azure Function App

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