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 "Staleness" Metric for EventHub Triggered Functions

    TL;DR: Add both offset and time based "staleness" metric for EventHub to Function triggers

    If one is depending on the well ordered guarantee of EventHub, one must crash the process if a temporary error occurs in order to avoid the offset being moved forward (there should be a better mechanism - the retry policy seems to solve for this part of the problem). Crashing the process causes a new function to be run from the same offset repeatedly until the temporary error is resolved. Regardless of how the offset is made to not proceed, this temporarily avoids data loss. However,…

    1 vote
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  2. @EventhubOutPut supporting Partitionkey

    Currently its not clear from the document whether @EventHubOutPut supports a partitionKey to write the events. There is no examples for java. Can the below document be updated ?

    https://docs.microsoft.com/en-us/azure/azure-functions/functions-bindings-event-hubs#trigger---event-metadata

    3 votes
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  3. 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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  4. 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…

    2 votes
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  5. Azure Function - Event Grid Output Binding

    Presently there is only an Azure Service Bus output binding for Azure Functions, there is nothing to pass the output on to another Event Grid Endpoint.

    This would be very useful.

    Kind Regards

    Paul

    26 votes
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  6. Function inputs with query or path support should be able to make use of query/body parameters

    The documentation for SqlQuery inputs mentions that this capability is not yet supported, and points to a GH comment, but I saw no actual feature request so here it is.

    https://docs.microsoft.com/en-us/azure/azure-functions/functions-bindings-cosmosdb-v2#http-trigger-look-up-id-from-route-data-using-sqlquery-c

    "You can pass route data to the SqlQuery parameter as shown, but currently you can't pass query string values." (link to comment https://github.com/Azure/azure-functions-host/issues/2554#issuecomment-392084583)

    Is there any sort of timeline that users can expect this?

    Also, I think the documentation could be improved to explain that the Route Templates are based on ASP.NET routing, which is where the limitation stems from (because route templates in ASP.NET do not encompass…

    5 votes
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  7. MQTT Subscriber trigger support as a first class trigger

    Please add support for listening to MQTT 3.0 and 3.1 servers as a subscriber for a trigger. This would be immensely useful in IoT scenarios.

    8 votes
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  8. Azure B2C Trigger

    It would be really helpful to be able to have triggers on Azure B2C, for example on new user added take some action etc.

    7 votes
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  9. Wildcard within path of blob input bindings

    I wish we could specify blob storage input bindings path that included wildcard.

    --- function.json
    {
    "type": "blob",
    "name": "faces",
    "path": "face/profile-{date}-*.png",
    "connection": "AzureWebJobsDashboard",
    "direction": "in"
    }

    Then, I hope to process these as array of Blob objects.

    ---index.js

    module.exports = function (context, myQueueItem) {

    const fileSizeList = context.bindings.faces.map(face => face.size);
    
    context.log(fileSizeList);
    context.done();

    };

    4 votes
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  10. Support international SMTPUTF8 email addresses in Sendgrid output

    It seems like international characters in email addresses are not supported.

    I think SendGrid supports SMTPUTF8, as indicated here: https://sendgrid.com/blog/episode-2-of-the-grid-podcast

    It would be nice if Azure Functions could successfully implement support for this as well.

    When I send email to an address containing 'ø', the SendGrid portal displays the address as containing 'ø' in place of the 'ø', which is a typical ASCII/UTF-8 encoding mismatch. And the message is dropped with Reason 'Invalid'.

    1 vote
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  11. Add binding attribute to control function scaling

    We use azure functions extensively. One of the issues we have is not being able to control individual functions scaling. I am not talking bout the function app here, but the functions themselves.

    Using the new attribute binding system could be a very nice way to set the max number of instances a function can spawn.
    [MaxParallelExecution(5)] or something like that.

    this would make it so that particular function does not scale over 5 instances.

    4 votes
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  12. Azure Services/PaaS or E2E-scaffolding for Facebook GraphQL/Relay

    There is something beyond Azure App-Services and Functions; Facebook GraphQL as a service, end-to-end which should in clude a CQRS "back-end" (REDIS...) and API-Mgmt/Monitoring features. Here are some examples: https://www.graph.cool/features/ and https://scaphold.io/... but we leverage Azure, so we are currently developing with graphql in AppServices...

    6 votes
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