Deploying serverless applications with Azure Functions

This example lives in the pulumi/examples repository. Check out just this directory to use it:

$ git clone --filter=blob:none --sparse https://github.com/pulumi/examples pulumi-examples
$ git -C pulumi-examples sparse-checkout set azure-py-functions
$ cd pulumi-examples/azure-py-functions

This example deploys an Azure Function App with HTTP-triggered serverless functions written in Python.

The application settings configure the app to run on Python 3 and to deploy a specified zip file to the Function App. The app will download the file, extract the code from it, discover the functions, and run them. We’ve prepared this zip file for you to get started faster; you can find its source code here. The code contains a single HTTP-triggered Azure Function. See app/README.md for an optional walkthrough of building the function project yourself.

Prerequisites#

1. Install Pulumi
2. Configure Azure credentials
3. Install Python

Deploying the example#

1. Create a new stack:

   pulumi stack init dev

2. Log in to the Azure CLI (you will be prompted to do this during deployment if you forget this step):

   az login

3. Set the Azure region to deploy into. Choose any Azure region that supports the services used in this example (see this list of available regions):

   pulumi config set azure-native:location eastus2

4. Install dependencies:

   python3 -m venv venv
   source venv/bin/activate
   pip install -r requirements.txt

5. Deploy the stack:

   pulumi up

       Type                                     Name                        Status
   +   pulumi:pulumi:Stack                      azure-py-functions-dev      created
   +   ├─ azure-native:resources:ResourceGroup  resourcegroup_functions_py  created
   +   ├─ azure-native:web:AppServicePlan       consumption-plan            created
   +   ├─ azure-native:storage:StorageAccount   storageaccount              created
   +   └─ azure-native:web:WebApp               functionapp                 created
   
   Outputs:
       consumptionplan        : "consumption-plan7b9df5ed"
       endpoint               : "https://functionappfe054af4.azurewebsites.net/api/HelloWithPython"
       function_app           : "functionappfe054af4"
       primarystoragekey      : "[secret]"
       resourcegroup          : "resourcegroup_functions_py4eba2bf2"
       storageaccount         : "storageaccounta6b2e431"
       storageaccountkeys     : "[secret]"
       storageconnectionstring: "[secret]"
   
   Resources:
       + 5 created
   
   Duration: 50s

6. Check the deployed function endpoint via pulumi stack output, then open it in a browser or curl it:

   curl "$(pulumi stack output endpoint)"

   Hello from Python in Pulumi! You have stood up a serverless function in Azure!

Cleaning up#

Once you are finished, you can destroy your stack and remove it to avoid incurring any additional cost:

pulumi destroy
pulumi stack rm