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Azure Functions

By Kong Inc.

Looking for the plugin's configuration parameters? You can find them in the Azure Functions configuration reference doc.

This plugin invokes Azure Functions. It can be used in combination with other request plugins to secure, manage, or extend the function.

Demonstration

To demonstrate the plugin, set up the Azure Functions “hello world” function.

  1. In this example, we’ll consider the following placeholder settings. Insert your own values for the placeholders in the code examples:

    • <appname> for the function’s app name
    • <functionname> for the function name
    • <apikey> for the api key

  2. Test your function to make sure it works before adding it to Kong Gateway:

     curl -i -X GET https://<appname>.azurewebsites.net/api/<functionname>?name=Kong \
      -H "x-functions-key:<apikey>"

     HTTP/1.1 200 OK
 ...
 "Hello Kong!"

  3. Set up a route in Kong Gateway and link it to the Azure function you just created.

Create the route:

curl -i -X POST http://localhost:8001/routes \
--data 'name=azure1' \
--data 'paths[1]=/azure1'

Add the plugin:

curl -i -X POST http://localhost:8001/routes/azure1/plugins \
--data "name=azure-functions" \
--data "config.appname=<appname>" \
--data "config.functionname=<functionname>" \
--data "config.apikey=<apikey>"

Add a route and plugin to the declarative config file:

routes:
- name: azure1
  paths: [ "/azure1" ]
plugins:
- route: azure1
  name: azure-functions
  config:
    appname: <appname>
    functionname: <functionname>
    apikey: <apikey>

Note: If config.https_verify is set as true, then the server certificate is verified according to the CA certificates specified by the lua_ssl_trusted_certificate directive in your Kong configuration.

Test the Azure Function through Kong

In this example, we’re only passing a query parameter name to the Azure Function. Besides query parameters, the HTTP method, path parameters, headers, and body are also passed to the Azure Function if provided.

curl -i -X GET http://localhost:8000/azure1?name=Kong

You should see the same result as shown in step 2:

HTTP/1.1 200 OK
...
"Hello Kong!"