Azure Functions

Azure Functions is an event driven, compute-on-demand experience that extends the existing Azure application platform with capabilities to implement code triggered by events occurring in other Azure services, SaaS products, and on-premises systems. With Azure Functions, your applications scale based on demand and you pay only for the resources you consume. Azure Functions provides an intuitive, browser-based user interface allowing you to create scheduled or triggered pieces of code implemented in a variety of programming languages.

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  1. Visual Studio always uses name of req in the function.json file

    Visual Studio always puts name : req in the function.json file. There appears to be no way to set this from code, and when publishing, it overwrites any manual changes you may have made. This name needs to be the different when using an additional parameter to your function method, like an auth token from Azure AD.

    1 vote
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  2. Visual Studio should warn that Functions developed in-portal will be overwritten

    As the title states: Visual Studio should warn that Functions developed in-portal will be overwritten.

    The design behaviour of Visual Studio deployments is to overwrite the whole app. This can be a problem for customers who have developed their Functions via the in-portal editor, and were not expecting them to be entirely overwritten.

    I would think that we could detect this scenario and throw a warning screen before deploying.

    2 votes
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  3. Support F# scripts (.fsx) in v2 and v3

    F# script usage is about to become much more prevalent due to the improved "#r nuget" imports in F#5. Azure Functions v2 and v3 should support F# scripts so that we can avoid having to create a "function project" when a a simple .fsx would suffice.

    68 votes
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  4. Allow non-public constructor for Function DI

    A (non-static) Function's constructor that is used for dependency injection must currently be public.

    Sometimes a Function has dependencies that (even as interfaces) are internal to its own project. As parameters of a public constructor, they are forced to become public, even though that is not the correct visibility modifier for them.

    Non-public constructors (particularly internal ones) are the natural solution to this.

    1 vote
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  5. support http input binding

    support http input binding
    I found that input binding for HTTP did not exist.

    In my case, I needed to have a function request data via HTTP, and then write to Azure Table. (timer trigger)

    1 vote
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  6. CPU Time/%/Memory should be available in metrics when running on an App Service Plan

    When getting alerts on high cpu ( or memory) for an app service plan, it is currently impossible to see what is consuming the cpu if both webapps and functions are running on the same App Service Plan

    1 vote
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  7. 1 vote
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  8. consolidate premium and app service plan

    the premium plan appears to be app service plan with a limit of instances and a different scaling trigger, There are a number of issue with this, to name a few:


    • functions is positioned as a serverless compute offering but the premium plan is clearly not.

    • the pricing page is not clear about the significant differences in pricing models

    • charging for memory duration when you have paid for underlying compute seems excessive

    • no price parity between the plan skus

    • causes confusion when trying to select a hosting plan

    3 votes
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  9. Misleading warning on function Integrate blade

    The functions Integrate blade displays a warning that the bindings are missing the required direction property. This warning seems to display for all deployed functions even if the property is included.

    0 votes
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  10. First class support for Deno

    Will we get first class support for Deno now that its reached version 1.0 https://deno.land/v1?

    1 vote
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  11. Set partitionKey property in Event Hub output binding

    In an IoT scenario combining EventHub with StreamAnalytics, it is important that the EventHub is partitionned properly to allow writing a "parallel" query in Stream Analytics.

    The current EventHub SDK allows to specify the partition key on a new batch of event before sending to EventHub, but this option is not available when we use an EventHub output binding.

    Using the EventHub SDK in an Azure function is not an option as the function has to recreate the connection at each execution, and this is very slow, causing a function timeout in our tests.

    1 vote
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  12. Allow exploring functions across function apps in Azure Portal

    We have several functions and function apps. The only reason we have separate function apps is that their deployments and host.jsons are different. All functions (even though they reside in different apps) are related to the same business cases. Allow exploring all functions within a resource group in a single search view.

    1 vote
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  13. Blob trigger support with Service Principle/Managed identity

    We are trying to setup a Blob Triggered Function, but we have a limitation to use only Service principal/managed identity to access the storage because of the security concerns in directly using access keys.

    We did not find a way to by-pass blob trigger to using connection string.

    Theoretically, since Blob Storage is integrated with Azure Active Directory, it should be possible to provide the right RBAC permissions on my Blob Containers so that the Function's identity (Managed Service Identity)/Service principle has whatever permissions are necessary to create the trigger and read from the blobs.

    We are expecting azure functions…

    7 votes
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  14. Parse and validate "host.json" file during deployment

    I'd suggest it would be a better experience to parse the function's "host.json" file during deployment and raise an error if any configuration setting is incorrect. Currently there's no indicator of an incorrect configuration in this file.

    I've struggled with a function timing out regardless of the functionTimeout setting, and had to open a support ticket to get assistance of a support engineer to review the function's logs just to discover I've included an extra pair of double quotes. This would not show in the portal nor in the application insights service attached to the function. Instead of getting an…

    2 votes
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  15. Network Access Restrictions should support Network Service Tags

    When configuring network access restrictions (see https://docs.microsoft.com/en-us/azure/app-service/app-service-ip-restrictions), Function Apps currently only support IP Ranges. This results in static configurations to dynamic addresses such as Azure Data Center IP ranges.

    To align with the rest of the Azure platform's network access restrictions it should support the use of Network Service Tags. This will allow changes to Azure Data Center IP ranges to be processed automatically and not create a service and maintenance issue.

    Network Service Tags - https://docs.microsoft.com/en-us/azure/virtual-network/service-tags-overview

    5 votes
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  16. Use GPU in azure function

    How to use GPU in azure function.
    I've one external exe and I want to use GPU in that exe. How to use GPU enabled functions.

    1 vote
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  17. Improve Error Messaging for Function App Deployment (App Settings)

    When deploying a function app to Azure Government, provide more specific error messaging when appsettings values are incompatible or otherwise contain errors.

    When updating settings, the only error message a user will receive from Set-AzWebApp seems to be the 400 Bad Request, and from the portal, the "(InternalServerError) from host runtime.

    This makes debugging deployments very difficult.

    The same idea could likely feed back to commercial deployments, too.

    2 votes
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  18. Use of TelemetryClient and Telemetry Configuration is not clear

    .NET developers who are new to Azure Functions would like to be able to quickly and easily find documentation that provides guidance for integrating Azure Functions with Application Insights for log statements and custom telemetry.

    Although there are a couple pages (1: https://docs.microsoft.com/en-us/azure/azure-functions/functions-monitoring?tabs=cmd#enable-application-insights-integration , 2: https://docs.microsoft.com/en-us/azure/azure-functions/functions-dotnet-dependency-injection#logging-services ) that indicate how to configure Application Insights for Azure Functions, they are not very easy to find.

    It would be beneficial to have official documentation that succinctly describes how to enable Application Insights for Azure Functions.

    1) This should be a distinct page with a navigation pane.

    2) Include/reference existing documentation for how…

    1 vote
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  19. More Descriptive Error Message - Platform Version discrepancy

    When an exception is thrown based on incorrect platform version please provide more descriptive error messages. The error message received was:
    'Could not load file or assembly 'Microsoft.PrivacyServices.CommandFeed.Client, Version=1.2.0.0, Culture=neutral, PublicKeyToken=74a17481026a49c7'. Could not find or load a specific file.'

    A message indicating could not load foo.dll, found 64-bit version.  App is 32-bit would be very helpful in determining resolution.

    2 votes
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  20. Allow Azure Function triggers to be enabled/disabled at runtime

    This feature would allow developers to decide when a triggered function (Service Bus, Event Grid, Storage queue, ...) should be disabled or re-enabled.

    Consider the following scenario where you develop a function that's being trigged by new messages on a Service Bus Queue. Whenever your function gets triggered you call a downstream API. This downstream API could have throttling limits or might have issues. To get around this you think about implementing the Circuit Breaker pattern. Whenever the circuit opens, you would stop calling the downstream API.

    Today the only way to stop processing messages it to completely stop the…

    1 vote
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