Tutorial: Using extensions

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An extension is a kind of bridge between your API proxies and an external resource. This tutorial shows you what an extension is, and guides you through the required processes.

Prerequisites

Before you start this tutorial, make sure you've done all of the following:

Area	Steps	Done?
Apigee Edge	Apigee must enable the extensions feature for your Apigee Public Cloud organization. If the feature is enabled, you will see an Extensions menu item in the Admin menu of the Edge UI. If not, please contact Apigee Edge Support.
Google Cloud Platform	Create a project on Google Cloud Platform, if you don't already have one. Your API proxy will write log entries using this project. Create a Workspace for your Google Cloud project as described in Creating a Workspace.
Service Account	Create or choose a Google Cloud Service Account (SA) with which we'll authenticate to Google Cloud. You can create an SA in the Google Cloud console at IAM & Admin > Service accounts. Assign the Logs Writer role to the SA in Logging > Logs Writer. For more information, see Granting roles to a service account for specific resources. Download an SA JSON file for configuring the extension. For more information see Creating and managing service account keys.

Ready? Let's begin!

To use extensions with Apigee Edge:

1. Step 1: Add an extension to Edge.
2. Step 2: Configure and deploy for testing.
3. Step 3: Use an ExtensionCallout policy.
4. Step 4: Deploy your proxy.
5. Step 5: Log a message flow variable.