Previously, type_to_endpoint.cc had a lot of hardcoding, which doesn't scale well with multiple API
versions. See https://github.com/envoyproxy/envoy/pull/9526 for an example of the issues
encountered.
This patch switches to using explicit resource type annotations on service descriptors, which is
great for documentation (previously this was sometimes given in comments, sometimes not), and allows
for a reflection driven reverse map from resource type URL to endpoints to be built at runtime.
Risk level: Low
Testing: New unit tests for type_to_endpoint.cc and golden protoxform tests for the new annotations.
Fixes#9454.
Signed-off-by: Harvey Tuch <htuch@google.com>
Mirrored from https://github.com/envoyproxy/envoy @ cceab393664429a3063d787cf28cade3c8ab01c7
data-plane-api(CircleCI)