apigee

Base64 encoding in an Apigee Edge policy

What's the easiest way to do Base64 encoding within an Apigee policy? I need to encode the text of an SMS to be sent programmatically.

I know I could include the code explicitly, but I'd much prefer to use a capability that is built in if available.

Solution

  • The most efficient way to accomplish this is to create a python script policy, then use python's built-in base64 module to build a simple function that base64-encodes or -decodes an argument.

    If you snag the sample proxies from here: http://apigee.com/docs/api-services/content/api-proxy-samples you'll find a python example in /simpleProxy/apiproxy/resources/py.

    The policy XML is like this: 

    <Script name="Script-GenerateAuthHeader">
  <ResourceURL>py://Authheader.py</ResourceURL>
</Script>

    The python code would look like this: 

    import base64

username = flow.getVariable("request.formparam.client_id")
password = flow.getVariable("request.formparam.client_secret")

base64string = base64.encodestring('%s:%s' % (username, password))[:-1]

flow.setVariable("my.base64.blob", base64string)

    Alternatively, if python isn't your style, you could do this in javascript using a js resource, or even directly in a Node.js proxy.