This patch introduces the tools/docs for a new flow for protoxform: freeze.
This performs a major version freeze and bump by modifying
package_version_status. Tooling now needs to deal with 3 possible versions (v2,
v3, v4alpha). The following contributions are made in the patch:
* Tooling added to support v2 APIs freeze, transitioning v3 to active and generating v4alpha.
* A new tool, merge_active_shadow.py, is introduced to combine hand-edited active v3 API protos with the v2 implied shadows for deprecated fields.
* The type database now spans v2 and v3 (and implied v4alpha files)
* api_proto_plugins can now take extra args on the Bazel CLI; this is used to plumb in the freeze arg to protoxform.
Docs are updated to reflect the v3 flow that developers should now
follow.
Part of #10355
This is the tools/docs component of #10601. See #10601 for the resulting
API protos generated by a freeze/fix cycle.
Risk level: Low (tooling only, no API changes yet)
Testing: new golden protos tests for protoxform, unit tests for merge_active_shadow.
Signed-off-by: Harvey Tuch <htuch@google.com>
Mirrored from https://github.com/envoyproxy/envoy @ de222c3acf1fbf124ca44f50495fc4b8e9aba525