Protobuf 5.28.0

[tnoczyns-volue]

With new protobuf 5.28.0 released 28th of August there are 2 issues:

• We observe warnings like:

Lib\site-packages\google\protobuf\runtime_version.py:112: UserWarning: Protobuf gencode version 5.27.2 is older than the runtime version 5.28.0 at volue/mesh/proto/auth/v1alpha/auth.proto. Please avoid checked-in Protobuf gencode that can be obsolete.

We are using grpcio tools to compile our proto files. It seems regardless of the installed protobuf version, grpcio tools generate them using version 5.27.2.

• This discrepancy may be the potential cause of one test failing: test_get_utc_time_attribute[True].

[tnoczyns-volue]

• It seems that grpc tools indeed have their own protobuf version:
  https://github.com/grpc/grpc/blob/v1.66.1/third_party/protobuf.patch
• In protobuf 5.28.0 there was the gencode vs runtime protobuf version warning introduced:

Lib\site-packages\google\protobuf\runtime_version.py:112: UserWarning: Protobuf gencode version 5.27.2 is older than the runtime version 5.28.0 at volue/mesh/proto/auth/v1alpha/auth.proto. Please avoid checked-in Protobuf gencode that can be obsolete.

• The reason why test started failing: With protobuf 5.28.0 the approach with listing fields to distinguish whether a singular field was set or not seems to no longer work: all fields are listed, for previous version 5.27.4 only the ones where actual, non-empty value was provided. It may be because of the codegen vs runtime difference.

[tnoczyns-volue]

For the first issue:

With new protobuf 5.28.0 released 28th of August there are 2 issues:

• We observe warnings like:

Lib\site-packages\google\protobuf\runtime_version.py:112: UserWarning: Protobuf gencode version 5.27.2 is older than the runtime version 5.28.0 at volue/mesh/proto/auth/v1alpha/auth.proto. Please avoid checked-in Protobuf gencode that can be obsolete.

See:

• Excessive new warning in Python protobuf runtime protocolbuffers/protobuf#18096
• UserWarnings emitted from all protoc-generated _pb2 packages grpc/grpc#37609