Create a function triggered by a GitHub webhook
Learn how to create a function that is triggered by an HTTP webhook request with a GitHub-specific payload.
- A GitHub account with at least one project.
- An Azure subscription. If you don't have one, create a free account before you begin.
Create an Azure Function app
Select the New button found on the upper left-hand corner of the Azure portal, then select Compute > Function App.
Use the function app settings as specified in the table below the image.
Setting Suggested value Description App name Globally unique name Name that identifies your new function app. Valid characters are
Subscription Your subscription The subscription under which this new function app is created. Resource Group myResourceGroup Name for the new resource group in which to create your function app. OS Windows Serverless hosting is currently only available when running on Windows. For Linux hosting, see Create your first function running on Linux using the Azure CLI. Hosting plan Consumption plan Hosting plan that defines how resources are allocated to your function app. In the default Consumption Plan, resources are added dynamically as required by your functions. In this serverless hosting, you only pay for the time your functions run. When you run in an App Service plan, you must manage the scaling of your function app. Location West Europe Choose a region near you or near other services your functions access. Storage account Globally unique name Name of the new storage account used by your function app. Storage account names must be between 3 and 24 characters in length and may contain numbers and lowercase letters only. You can also use an existing account, which must meets the storage account requirements.
Select Create to provision and deploy the function app.
Select the Notification icon in the upper-right corner of the portal and watch for the Deployment succeeded message.
Select Go to resource to view your new function app.
Having trouble finding your function apps in the portal, try adding Function Apps to your favorites in the Azure portal.
Next, you create a function in the new function app.
Create a GitHub webhook triggered function
Expand your function app and click the + button next to Functions. If this is the first function in your function app, select Custom function. This displays the complete set of function templates.
In the search field, type
githuband then choose your desired language for the GitHub webhook trigger template.
Type a Name for your function, then select Create.
In your new function, click </> Get function URL, then copy and save the values. Do the same thing for </> Get GitHub secret. You use these values to configure the webhook in GitHub.
Next, you create a webhook in your GitHub repository.
Configure the webhook
In GitHub, navigate to a repository that you own. You can also use any repository that you have forked. If you need to fork a repository, use https://github.com/Azure-Samples/functions-quickstart.
Choose Settings > Options and make sure that Issues is enabled under Features.
In Settings, choose Webhooks > Add webhook.
Use settings as specified in the following table, then click Add webhook:
|Payload URL||Copied value||Use the value returned by </> Get function URL.|
|Content type||application/json||The function expects a JSON payload.|
|Secret||Copied value||Use the value returned by </> Get GitHub secret.|
|Event triggers||Let me select individual events||We only want to trigger on issue comment events.|
Now, the webhook is configured to trigger your function when a new issue comment is added.
Test the function
In your GitHub repository, open the Issues tab in a new browser window.
In the new window, click New Issue, type a title, and then click Submit new issue.
In the issue, type a comment and click Comment.
Go back to the portal and view the logs. You should see a trace entry with the new comment text.
Clean up resources
Other quick starts in this collection build upon this quick start. If you plan to work with subsequent quick starts, tutorials, or with any of the services you have created in this quick start, do not clean up the resources.
Resources in Azure refers to function apps, functions, storage accounts, and so forth. They are grouped into resource groups, and you can delete everything in a group by deleting the group.
You created resources to complete these quickstarts. You may be billed for these resources, depending on your account status and service pricing. If you don't need the resources anymore, here's how to delete them:
In the Azure portal, go to the Resource group page.
To get to that page from the function app page, select the Overview tab and then select the link under Resource group.
To get to that page from the dashboard, select Resource groups, and then select the resource group that you used for this quickstart.
In the Resource group page, review the list of included resources, and verify that they are the ones you want to delete.
Select Delete resource group, and follow the instructions.
Deletion may take a couple of minutes. When it's done, a notification appears for a few seconds. You can also select the bell icon at the top of the page to view the notification.
You have created a function that is triggered when a request is received from a GitHub webhook.
Learn how to create functions with other kinds of triggers or how to integrate functions with other Azure services.
- Create a function that runs on a schedule
- Create a function triggered by Storage queue messages
- Create a function triggered by a generic webhook
- Create a function triggered by a GitHub webhook
- Add messages to an Azure Storage queue using Functions
- Store unstructured data in Azure Cosmos DB using Functions
For more information about webhook triggers, see Azure Functions HTTP and webhook bindings.