Prefix Regex

Using prefix and prefix_regex

When the prefix_regex attribute is set to true, Ambassador Edge Stack configures a regex route instead of a prefix route in Envoy. This means the entire path must match the regex specified, not only the prefix.

Example with a version in the URL

If the version is a path parameter and the resources are served by different services, then

---
apiVersion: getambassador.io/v2
kind: Mapping
metadata:
name: qotm
spec:
prefix: "/(v1|v2)/qotm/.*"
prefix_regex: true
service: qotm

will map requests to both /v1 and /v2 to the qotm service.

Note that enclosing regular expressions in quotes can be important to prevent backslashes from being doubled.

Questions?

We’re here to help. If you have questions, join our Slack, contact us, or request a demo.