This patch moves away from the paradigm of sed-style upgrading of every v2
package to v3alpha. Instead, an additional type analysis phase is
performed prior to protoxform by a protoc plugin known as the "type
whisperer".
The type whisperer produces structured type dependency information for
each .proto. The tools/type_whisperer/typedb_gen.py tool then knits
these together to provide an API-wide type dependency graph. This is
then used to determine which types need upgrading (either they have
breaking changes or transitively depend on types with such changes).
Only packages with upgraded types now undergo the v2 -> v3alpha
transition.
The API type database is checked into
source/common/config/api_type_db.pb. This may seem a strange location,
but in the future we will include the type database as a build artifact
for the Envoy binary, as it will be used by the reflection-based version
converter to find the type upgrade path for input proto.
Risk level: Low (the v3alpha protos are not used yet).
Testing: fix_format, manual inspection of diffs, bazel test //test/...,
docs build.
Part of #8082Fixes#8490
Signed-off-by: Harvey Tuch <htuch@google.com>
Mirrored from https://github.com/envoyproxy/envoy @ ad57b58cfbb256af41a467260dce2a8013b7a7fa
data-plane-api(CircleCI)
4f2a5fb69a