![]() ![]() Run the project to test the two functions locally. Create a second functionName the function SimpleAnonymousFunction SimpleAnonymousFunctionįor this function, choose Anonymous authorization and an Http Trigger Choose HttpTrigger and AnonymousAt this point you should have two functions, one with a function key and one without. Rename the default functionAdd a second function by right-clicking on the project and selecting Add -> New Azure Function. Make sure to also update the FunctionName attribute to reflect the new name. Leave defaults set to create an Http triggered function with function authorization levelOnce the app is created, rename the first function to SimpleAuthorizationFunction by right-clicking on the Function1.cs file and renaming: SimpleAuthorizationFunction Create the function appLeave the defaults to choose an Http Trigger and use the Storage emulator and give the function an authorization level of Function. Select a folder that makes sense to you for storing the function app, then hit the Create button. Select the Function App Template to create a new function app projectName the Function app something like SimpleFunctions SimpleFunctions To begin, open Visual Studio 2019 and create a new Azure Function app. Create a function app with a couple of functions.This function app will contain a couple of simple functions so that you can see a few of the features of APIM later in the walk-through. To simulate your current functions at Azure, for use in this walk-through you’ll just use a simple function app. PostMan, another API tester, or an ability to run curl commandsĬreate a simple Azure Functions Function App.An Azure Account with ownership on the subscription.You can get them by making sure you install them with the Visual Studio installer - Azure development workload). If you do not have the tools you will want them for local debugging. Azure Functions tools for local debugging (optional for this walk-through.Or Visual Studio Code (not covered in this walk-through, but useable) Visual Studio Code Download. Visual Studio 2019 Community (or better).To get started, you will need the following: More info about the Festive Tech Calendar Getting started Watch the video of me working through this walkthrough here: Festive Tech Calendar : Azure Functions and APIM This walkthrough is featured in day 6 of the festive tech calendar! This functionality won’t be covered in this walk-through, but you will be set up to use it if you want to go deeper in the future. If you use a plan other than the consumption plan, you can further throttle the API by specific IP or subscription key. With APIM you can easily throttle users on an API. ![]() This also protects the customers from having to know what your third-party API key is, since they will never need to call the third-party API directly.ĪPIM also has additional gains when it comes to dealing with bad players. Even if the customers do know that you are using a third-party API, all they need from you is one URL to access all of the APIs you need to expose to them. ![]() With APIM, you will not only be able to expose your own APIs as needed, but you can also route users to a third-party API without them even knowing you are using the third-party API, if you need to do so. The overarching goal is to create your public-facing Application Programming Interface (API) in such a way that you can leverage Azure Functions without the functions being open to the world, and then you can use Azure API Management (APIM) as a public-facing facade to let specific customers into the appropriate APIs. Therefore, by the end of this walk-through you’ll have more security available than what you would get from just using a function key alone. In this walk-through, you will be guided through securing your Azure Functions so that a random user can’t just execute your functions, even if they have the function key and full function URL. ![]()
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