#Azure – Reading configuration values in Azure Functions

Hi !

I was learning about Azure Vault and Azure Functions, and it’s been an interesting ride. This tweet summarizes this ride 😎😁😎

So while I a was using Functions, I realized that at the end, we are working with WebApps. So, we have access to standard App Configurations.

Note: I’ll call it standard, however this reveal how old I am, remembering Asp.Net apps and web.config files.

Moving On, in the Azure Portal, we can access the Function Configuration via Function // Settings // Configuration.

As the official documentation describes

In App Service, app settings are variables passed as environment variables to the application code.

So, it super easy to access this with a simple line of code. The next examples shows how to read an environment variable named “dbConnectionString” where I store a connection string.

var cnnString = Environment.GetEnvironmentVariable("dbConnectionString", EnvironmentVariableTarget.Process);

Super easy ! and it also have the checks for security:

App settings are always encrypted when stored (encrypted-at-rest).

My next step in my journey will be describe how to also do this with KeyVault. And share some insights on both scenarios.

References

• Configure an App Service app in the Azure portal
• Use Key Vault references for App Service and Azure Functions

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