Creating functions

To create a function (console)

1. Sign in to the Amazon Web Services Management Console and open the Functions page in the CloudFront console at https://console.amazonaws.cn/cloudfront/v4/home#/functions.

2. Choose Create function.

3. Enter a function name that is unique within the Amazon account, then choose the Java Script version, and then choose Continue. The function now exists. The details page for the new function appears.

   Note

   If you want to use key value pairs in the function, you must choose Java Script 2.0.

4. In the Function code section, select the Build tab and enter your function code. The sample code that is included in the Build tab illustrates the basic syntax for the function code. You can complete the code as follows:

   • Use the default function just so you can get started.

   • Replace it with code that you copy from example code on GitHub.

   • Replace it with your own code.

   For more information about writing function code, see the following:

   • Writing function code

   • CloudFront Functions event structure

5. Choose Save changes as often as you want, to save the function code.

6. If the function code uses key value pairs, you must associate a key value store.

   You can associate the key value store during the initial creation of the function. Or you can associate it later, by updating the function.

   To associate a key value store now, follow these steps:

   • Go to the Associate KeyValueStore section and choose Associate existing KeyValueStore.

   • Select the key value store that contains the key value pairs in the function, then choose Associate KeyValueStore.

   CloudFront immediately associates the store with the function. You don't need to save the function.