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How do i remove the Function App name from an Azure APIM endpoint with a custom domain?

I am trying to figure out Azure’s APIM at the moment and getting nowhere fast.

I have an Azure Function App:

FunctionApp Name: myFunctionApp
FunctionApp Route: /x/y/{z}/get

so the app function url is https://myFunctionApp.azurewebsites.net/api/x/y/{z}/get

i want to use azure apim to use a custom domain primarly to map multiple azure functions apps to be under a single domain for easy of use for web users.

However when the api creates an end point for a function app the endpoint is:

https://my-apim-name.azure-api.net/myFunctionApp/x/y/{z}/get

however the function apps name is in the url, which then create a less friendly and messy endpoint, i would like to be able to remove the function apps name from all api end points

So i want to be able to use:

https://my-apim-name.azure-api.net/x/y/{z}/get

if i use:

<rewrite-uri template="/x/y/{z}/get" />

i get resource not found

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2

Answers


  1. 0

    Lets say you have an Url https://xxx.azure-api.net/afreen-fa/Route1 wherein xxx.azure-api.net is host name , afreen-fa is API Url suffix and Route1 is Uri template. So you would like to remove the Url suffix before sending the request to backend which will result in {domainName}/{FunctionAppRoute}.

    In order to remove the API Url suffix, you can use the below given policy.

    <policies>
    <inbound>
        <base />
        <rewrite-uri template="@(context.Request.OriginalUrl.Path.Replace(context.Api.Path, string.Empty))" copy-unmatched-params="true" />
    </inbound>
</policies>

    This policy will remove the url suffix.

    enter image description here
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    If you want to pass the value of FunctionAppRoute dynamically and remove the FunctionAppName from the request Url then you the above given policy along with that follow the below steps-

    I have imported a function app which has route x/y/{z}/get and it looks like below-

    enter image description here

    Then I added <rewrite-uri template="@(context.Request.OriginalUrl.Path.Replace(context.Api.Path, string.Empty))" copy-unmatched-params="true" /> in inbound policy. My function works fine without using this policy too.

    Invoking the request.

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  2. 0

    In essence, you want requests to https://my-apim-name.azure-api.net/x/y/{z}/get to be redirected to https://myFunctionApp.azurewebsites.net/api/x/y/{z}/get.

    Why don’t you set up the API as follows?
    API Settings

    Then, if you have the Operation Frontend set up like this, it should work as expected – no need to use complex policies:

    Operation Frontend

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