This PR introduces a parallel v3 API reference documentation tree to the
existing v2 one.
The docs/root/api-v3/ tree was copied from docs/root/api-v2 and the
necessary package path fixups were made manually. As a result, the tree
largely resembles the v2 docs. Long term this is likely to evolve to
reflect the shape of the new extensions tree.
The message type, field and enum anchors are sed'ed to be distinct and
self-consistent inside api-v3/.
There were a number of API proto changes that were made to obtain a
successful Sphinx build:
* References to deprecated fields were replaced by references to the replacement field.
* clang-format line wrapping in protoxform was removed, this breaks RST in some v3 protos.
* Some packages (type/metadata/v2, data/cluster/v2alpha) were force upgraded to v3, to deal with references to types that are distinct in v2/v3. This is OK as these packages probably make sense to bump for v3, in general we're going to have to think about how to do this more
cleanly, supporting dual v2/v3 references alongside each other.
* Some evil hacks for field renaming added to migrate.py for RouteAction.
There's also some additional machinery added to compute distinct v3/v3
build targets to point protodoc at.
Risk level: Low
Testing: Docs build, manual inspection.
Fixes#8087
Signed-off-by: Harvey Tuch <htuch@google.com>
Mirrored from https://github.com/envoyproxy/envoy @ ac88316892cd47b6a9b58e3736e20e8863cd0d27