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. Add an empty / drain trigger to Azure Storage Queues

    Currently there seems to be no easy way to run code as soon as a Storage Queue has been emptied. It would be great to have an empty or drain trigger to call a different Azure Function for some pre-processing of batch jobs.

    3 votes
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    1 comment  ·  Flag idea as inappropriate…  ·  Admin →
  2. Reduce the price of Premium instances

    I could run a VM that costs me much less for the same configuration. To me, the price for pre-warmed instances seems too high.

    2 votes
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  3. Add Elastic Scale Plan (pre-warmed instances) in Gov Cloud

    When auto-scaling the number of instances for a Function, API requests are routed to new instances before they are ready (warmed up) causing failures/timeouts for those requests. In regular cloud, this is solved by using the Elastic Scale consumption plan that lets you specify the number of pre-warmed instances (https://docs.microsoft.com/en-us/azure/azure-functions/functions-premium-plan#pre-warmed-instances). Please bring this same plan to Gov Cloud.

    2 votes
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    0 comments  ·  Feature  ·  Flag idea as inappropriate…  ·  Admin →
  4. Specify a custom window for platform updates to WebApps, Functions, etc.

    I want to be able to request platform upgrades only restart my site within a specific window, say outside of business hours.

    2 votes
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    1 comment  ·  Feature  ·  Flag idea as inappropriate…  ·  Admin →

    This is great feedback.
    We strive for platform upgrades to happen transparently to you, however, they will restart every worker for your function app while performing a platform upgrade.

    We do not currently have the infrastructure to make this publicly available, but keep the votes coming!

    Thanks!
    Alex
    Azure Functions Team!

  5. add proxy header removal option

    Would it possible to not only override/add headers, but also remove header like x-forwarded-for.

    2 votes
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  6. When publishing through Visual Studio, create the storage account on the same region as the function

    I deployed my function through Visual Studio, creating a new one on an existing resource group.

    I chose to create a new Storage Account as well.

    I chose eastus2 as the region for my function. But after the deployment succeeded, I noticed that the region for the storage I created during the functions deployment was set for Central US.

    I'd like the created storage to be on the same region of the function. I double checked and there's no way to select a region for the storage you create in deployment time.

    2 votes
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    0 comments  ·  Feature  ·  Flag idea as inappropriate…  ·  Admin →
  7. Share RUs with a Serverless Function

    A popular pattern is to build a REST API using serverless Function with Http trigger, backed by Cosmos DB. Serverless is a very popular paradigm, and Cosmos is the best cloud database, so it's no wonder that customers are interested in this combination. However, the problem in this scenario is the cold start of the serverless Function, which negates the low-latency benefits of CosmosDB provisioning.

    It would be great to allow sharing the RUs provisioned for Cosmos DB collection with serverless functions running against the same collection. Let the Function execution consume some extra RUs, depending on the complexity of…

    2 votes
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  8. Enable Reader Access to view Azure Functions Monitor area so that they can view the running state of that Azure Function.

    Enable Reader Access to view Azure Functions Monitor area so that they can view the running state of that Azure Function. This is important for Prod environments where most users only have only Reader access.

    2 votes
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    0 comments  ·  Flag idea as inappropriate…  ·  Admin →

    This is currently unsupported, along with a large set of features that do not work in the portal with only reader view.
    There is work underway to remove this requirement, and allow us to enable UI for reader access.
    I will update this issue once we have planned that work.

    In the meantime, you can still view your logging information directly in the Application Insights instance for your Function App as a reader.

    Thanks for the feedback!
    Alex
    Azure Functions Team

  9. EventHub Trigger filtering based on properties

    It would be great to be able to provide a filtering expression in the binding of an eventHubTrigger. Using this I could configure my function to only be invoked for certain events that match the filter. For example, I store a property called "eventType" in the application properties of each event. My function is potentially only interested in events of one or more specific types. Currently I code this logic into the function, which works fine. However, it counts as an unnecessary invocation and increases the cost. Ideally the filtering would take place in the host and not incur a…

    2 votes
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    2 comments  ·  Feature  ·  Flag idea as inappropriate…  ·  Admin →

    Unsure on this one but marking as unplanned. The filtering would also have to happen at the client to preserve ordering. However even if we did the filtering before the execution it’s still consuming compute so I don’t think it makes sense for it to be “free.” Just because the trigger is doing filtering before execution wouldn’t necessarily negate the price aspect. And since filtering often has some custom parsing / decoding / conditions it’s almost better to do it in code.

    -
    Jeff

  10. Add "Deny" option when Request is not Authenticated

    I have a function app set up as a private API that requires users to authenticate via Azure AD B2C to be able to make calls. My mobile app does the auth and then provides the Bearer token in the service calls.
    This all works but if someone happens to browse an endpoint in a browser I don't want them to be redirected to the login page as the API is only meant to be requested from within the mobile app.
    I would like an option to just deny access to the API when a request is not authorised.

    2 votes
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    1 comment  ·  Feature  ·  Flag idea as inappropriate…  ·  Admin →
  11. 2 votes
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  12. Visual Studio Tooling - Javascript Project Template

    C# Project Template was recently added for Visual Studio Tooling https://feedback.azure.com/forums/355860-azure-functions/suggestions/13301214-visual-studios-tooling-with-local-execution-debug , however this doesn't handle all languages - F#, Javascript/Typescript, etc.

    Hoping we can get support added for better deployment capabilities with other languages as well as source code management. Great to see the Azure Function tooling finally make it to RTM for C#!

    2 votes
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    0 comments  ·  Feature  ·  Flag idea as inappropriate…  ·  Admin →
  13. Search input/output bindings

    Want to treat documents of the Azure Search as JSON from the Function Apps.

    First about input bindings. See following pseudo function.json.

    {

    "bindings": [
    
    {
    "name": "req",
    "type": "httpTrigger",
    "direction": "in"
    },
    {
    "name": "search_result",
    "type": "search",
    "direction": "in",
    "serviceName": "mybookshelf",
    "indexName": "book",
    "apiKey": "envname-SEARCH_ADMIN_KEY",
    "queryType": "full",
    "searchMode": "all",
    "searchFields": ["id", "title", "author"],
    "search": "title:{title} AND genre:{genre}"
    },
    {
    "name": "res",
    "type": "http",
    "direction": "out"
    }
    ]

    }

    When an http request is arrived, contents of $search_result likes as followings.

    [

    {
    
    "id": "e583e025-01f4-4288-8dec-be6723afe607",
    "title": "Dragon Ball vol.1",
    "author": "Akira TORIYAMA"
    },
    {
    "id": "bb0086f9-e924-450c-b615-f51fb730e339",
    "title": "Dragon Ball vol.2",
    2 votes
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    1 comment  ·  Feature  ·  Flag idea as inappropriate…  ·  Admin →
  14. Support etags for Azure Table Storage read/write operations

    I use python functions to read/write into Azure tables, unfortunately the etags are hidden. It would be quite useful to be able to access the eTags to ensure consistency of writes.

    2 votes
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  15. Can we test azure http trigger with API_KEY locally?

    I am creating some http triggers and want to know if we can create API_KEY locally to simulate the actions.

    1 vote
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  16. Dynamic file names for Blob out bindings - Python

    I am currently workig with an HTTP trigger with some paramateres. Based on those parameters I do some calculations and save results into a file on blob storage account. Currently I am saving them in static file name defined on binding but I woul dlike to be able to generate dynamically the file name in the az func code.

    For example:

    {

      "type": "blob",
    
    "direction": "out",
    "name": "outputBlob",
    "path": "container/{calculatedFileName}.csv",
    "connection": "AzureWebJobsStorage"
    }

    where calculatedFileName is something we define in the code.

    Is that something feasible? I am using Python.

    Thanks in advanced.

    1 vote
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    0 comments  ·  Bindings  ·  Flag idea as inappropriate…  ·  Admin →
  17. Ability to schedule Azure function runtime updates from the portal

    Requesting the ability to be able to schedule Azure function runtime updates from the portal. At present the runtime updates are pushed by Microsoft at random times which could impact service availability and customer experience. We need the ability to be able to either define a schedule for the function runtime updates or be able to manually perform those updates at a time that is convenient to the customer.

    1 vote
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    0 comments  ·  Runtime  ·  Flag idea as inappropriate…  ·  Admin →
  18. Add support to Circuit breaker pattern

    Azure functions should control the way the comunicate with their dependencies and process each request if they have condititions to do that. Same way we define bindings, it could be possible to define circuit breaker strategy to not overload unnecessary process if it is not possible to process requests.

    1 vote
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    0 comments  ·  Feature  ·  Flag idea as inappropriate…  ·  Admin →
  19. Please eliminate sandbox restrictions while running in Docker

    Right now the sandbox applies to azure function apps even when they're running in docker. Docker is the sandbox in that case. Further, things like System.Drawing.Common aren't effected on Linux the same as they are on Windows so there should be no issue requiring the sandbox to interfere.

    So Azure Functions should disable the sand-boxing when running in docker entirely.

    Failing that, it should disable the System.Drawing.Common limitations if running on Linux.

    1 vote
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    unplanned  ·  1 comment  ·  Runtime  ·  Flag idea as inappropriate…  ·  Admin →
  20. dynamic "newBatchThreshold" on queue triggered functions.

    When i host a queue triggered azure function on an app service, i would like the ability to programatically alter "newBatchThreshold" for a queue triggered function at runtime.
    So that when extraordinary conditions occur, i can decrease the number of messages causing stress on the system.

    I have many messages passing through a queue triggered function. Most of the time they are easy to process, so i have "newBatchThreshold" set to 64.

    This normally causes 20-30% database load processing these messages.

    We recently processed a batch of data where the messages all caused a substantially more complex than normal workflow…

    1 vote
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    0 comments  ·  Bindings  ·  Flag idea as inappropriate…  ·  Admin →
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