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. 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 →
  2. Support for VB

    Have existing Web Jobs in VB, some of which might be candidates for moving to Functions. Would be great to see full support for .Net languages in functions.

    12 votes
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  3. Sync code from blob storage

    I find the current deployment model way too difficult to work with. Please consider supporting auto-sync from blob storage, similar to what aws lambda offers.

    4 votes
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  4. 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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    1 comment  ·  Feature  ·  Flag idea as inappropriate…  ·  Admin →
  5. Output to Service Bus Queues Dynamically

    I have an Azure Function that binds to an input Event Hub and an output Service Bus Namespace. The output binding accepts the name of a queue. However, the event data coming from the Event Hub can potentially go to different queues. The determinant is in the message data. It would be nice to be able to tokenize the queue destination based on event data coming from the Event Hub

    4 votes
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  6. Azure Function C# template to use nameof() and appropriate function name

    How about change C# template like below form?

    [FunctionName(nameof(HttpTriggerCSharp))
    public static ...HttpTriggerCSharp(...)
    {
    ...
    }

    I think all of functions name has Run() might not reasonable. and utilize nameof() could be very helpful to change function name and readibility

    4 votes
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  7. 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…

    1 vote
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    0 comments  ·  Bindings  ·  Flag idea as inappropriate…  ·  Admin →
  8. 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…

    1 vote
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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

  9. When the major upgrade to .NET Framework in the future, We want to do integration tests on Function App.

    When the major upgrade to .NET Framework in the future, We want to do integration tests on Function App. It means that We would like to not only Local tests but also integration tests.
    (ex. executing function app from logic app)
    Also, We would like to have an option to upgrade as and when required.

    [background]
    Currently, we can only local test for upcoming upgrade to .NET Framework 4.7.2
    https://github.com/Azure/app-service-announcements/issues/89

    1 vote
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  10. 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

  11. 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.

    1 vote
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    0 comments  ·  Bindings  ·  Flag idea as inappropriate…  ·  Admin →
  12. 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 →
  13. 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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    0 comments  ·  Bindings  ·  Flag idea as inappropriate…  ·  Admin →
  14. 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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  15. 2 votes
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  16. Add "clientCertEnabled" support for local development of Azure Functions

    If I set the following flag on my azure-published azure-function "clientCertEnabled": true, my sample code below is able to use/consume the client certificate I send.

    I am unable to get local debugging to accept client-certificates.

    This makes unit-testing my azure function very difficult.

    using System;
    using System.Net;
    using System.Net.Http;
    using System.Threading.Tasks;
    using Microsoft.Azure.WebJobs;
    using Microsoft.Azure.WebJobs.Extensions.Http;
    using Microsoft.Azure.WebJobs.Host;
    using System.Security.Cryptography.X509Certificates;
    using System.Collections.Generic;
    using System.Linq;

    namespace MyNamespace
    {
    public static class ClientCertificateTest
    {
    [FunctionName("ClientCertificateTestFunctionName")]
    public static async Task<HttpResponseMessage> Run([HttpTrigger(AuthorizationLevel.Function, "post", Route = null)]HttpRequestMessage req, TraceWriter log)
    {
    try
    {
    System.Security.Cryptography.X509Certificates.X509Certificate2 cert = req.GetClientCertificate();

    X509Certificate2 headerCert = null;
    System.Net.Http.Headers.HttpRequestHeaders headers = req.Headers;
    if…

    8 votes
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  17. 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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    2 comments  ·  Bindings  ·  Flag idea as inappropriate…  ·  Admin →
  18. 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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  19. Scale # of servers in consumption plan based on Service Bus Queue Size

    My service bus will spike at the top of each hour with up to 1000+ messages to get processed immediately. It would be nice for the consumption plan to allow us to scale the # of servers to come online to be based on that queue size. Example: for 1000 messages, I would like 10 servers to come online (1 server per 100 in the queue).

    2 votes
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  20. Expose StorageClientFactory or QueueProcessorFactory to enable triggering on client-side-encrypted queues

    With WebJobs, a custom StorageClientFactory can set an EncryptionPolicy in the DefaultRequestOptions such that encrypted queue messages are transparently decrypted when triggering a WebJob.

    Alternatively, the EncryptionPolicy can be set on a queue by queue basis using a custom QueueProcessorFactory.

    If these, or a more general way to modify the JobHostConfiguration were provided, then we would be able to store the storage connection string in Azure KeyVault and use client side encryption with Azure Functions apps.

    1 vote
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