api

This folder stores filter config proto files for ESPv2 http filters.

Config versioning:

ESPv2 config is versioned. The current version is stored in api/VERSION file. The folder names under api/ contain version, e.g. api/envoy/v7/http/backend_auth. The proto package names contain version too, e.g. espv2.api.envoy.v7.http.common.Pattern.

Versioning Rules:

When making changes to the config proto files, make sure:

• No breaking changes, the changes should be backward compatible,
• If a breaking change is required, increase config version.

Steps to increase config version

If a breaking change is required, use following steps to increase config version.

• Increase api/VERSION to a newer version, e.g. from v6 to v7.
• Rename folder name from api/envoy/v6/http to api/envoy/v7/http.
• Replace package names from api.envoy.v6.http to api.envoy.v7.http for all proto files under folder api/.

Above steps can be achieved by running script api/scripts/update_version.sh.