Azure Function Net5 Async Probleme

Question

I have a problem with azure function only when I publish.

the code run not in order, all the functions run at the same time.

ex :

var logger = context.GetLogger(nameof(MibProposalRequest));
        logger.Log(LogLevel.Warning, $"Début de la fonction : MibProposalRequest {DateTime.UtcNow}");
        
        try
        {
            var getStringResponse = await this.GetStringAsync(req, logger).ConfigureAwait(false);
            if (getStringResponse.Error != null)
            {
                return new HttpResponseMessage()
                {
                    StatusCode = getStringResponse.Error.StatusCode,
                    ReasonPhrase = getStringResponse.Error.Message
                };
            }
            else
            {
                var requestBody = getStringResponse.Response.ToString();
                var deserializeRequestBodyResponse = await this.DeserializeRequestBodyAsync(requestBody, logger).ConfigureAwait(false);
                if (deserializeRequestBodyResponse.Error != null)
                {
                    return new HttpResponseMessage()
                    {
                        StatusCode = deserializeRequestBodyResponse.Error.StatusCode,
                        ReasonPhrase = deserializeRequestBodyResponse.Error.Message
                    };
                }

In this example I need to get the response of the function GETStringAsync and after go to the function : DeserializeRequestBodyAsync.

If I run the azure function in local (debug) it's all ok, everything it's in order. First log the function start. After Get the string end deserializeObject.

But when I publish the function and I test it, when I'm loocking at the log in portal.azure. All the function run not in good order. So sometimes I get an error from deserializeObject function because no string to deserialize. But its suppose to do the GetStringAsync function first.

Why this append? Image of the log

as you can see the function start log is not the first to show up why ? looks like all the code run completely not in order.

should be like this : Log of vs debug

Everything is good each functions run in good order (so no problems)

Why this append only when the function is published ??

Ps: I tried to run the function not async but nothing change. PS2: I tried to put all the code in the same function (Run) nothing changed. PS3: I tried to put task.wait nothing changed.

I need help please 2 days I'm on this.

The code execution order does not change, but you may be seeing the results of multiple concurrent executions of your function. There's not enough code posted to tell. So try to post a simplified, self-contained example. — David Browne - Microsoft
– David Browne - Microsoft, Commented Nov 7, 2021 at 0:14
Inside the azureFunction I have a couples methods ok ????!!! FunctoinOne FunctionTwo FunctionThree I need to do it in this order 1 2 3 not 2 1 3 — Alexandre Prod'Hon
– Alexandre Prod'Hon, Commented Nov 7, 2021 at 0:32

Siniseus · Accepted Answer · 2021-11-07 00:15:39Z

1

https://azure.microsoft.com/en-us/updates/general-availability-azure-functions-supports-net-5-in-production/?cdn=disable

From my experience this was a pain to get to work with Azure Functions on .NET 5. Either roll back to 3.1 or wait till 11/9/2021 for .NET 6 to release out of preview. .NEt 6 preview is allowed on Azure for testing.

Are you running .NET 5 in Azure in isolated mode? See link above.

"To support .NET 5, Azure Functions introduces a new isolated process model that runs .NET function apps in a separate worker process outside the Azure Functions host runtime."

edited Nov 7, 2021 at 0:15

answered Nov 7, 2021 at 0:13

Siniseus

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2 Comments

Alexandre Prod'Hon Over a year ago

The problem it's i'm using some project in my solution use the net 5.

Alexandre Prod'Hon Over a year ago

The function works but looks like all the methods inside run all together not in good order.

Alexandre Prod'Hon · Accepted Answer · 2021-11-07 21:53:21Z

0

I just found a solution in the code:

 List<ProposalIdModel> list = (List<ProposalIdModel>)deserializeGuidsAsyncResponse.Response ?? new List<ProposalIdModel>();

Like this the list while never be null. But it's wired in visual studio in debug no problem, but when I publish sometime the list get null. So problem solved. I also update to netCore6.

answered Nov 7, 2021 at 21:53

Alexandre Prod'Hon

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1 Comment

Community Over a year ago

As it’s currently written, your answer is unclear. Please edit to add additional details that will help others understand how this addresses the question asked. You can find more information on how to write good answers in the help center.

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