diff options
Diffstat (limited to 'python/google/protobuf/internal/api_implementation.py')
| -rwxr-xr-x | python/google/protobuf/internal/api_implementation.py | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/python/google/protobuf/internal/api_implementation.py b/python/google/protobuf/internal/api_implementation.py index 460a4a6c..422af590 100755 --- a/python/google/protobuf/internal/api_implementation.py +++ b/python/google/protobuf/internal/api_implementation.py @@ -100,6 +100,27 @@ if _implementation_version_str != '2': _implementation_version = int(_implementation_version_str) +# Detect if serialization should be deterministic by default +try: + # The presence of this module in a build allows the proto implementation to + # be upgraded merely via build deps. + # + # NOTE: Merely importing this automatically enables deterministic proto + # serialization for C++ code, but we still need to export it as a boolean so + # that we can do the same for `_implementation_type == 'python'`. + # + # NOTE2: It is possible for C++ code to enable deterministic serialization by + # default _without_ affecting Python code, if the C++ implementation is not in + # use by this module. That is intended behavior, so we don't actually expose + # this boolean outside of this module. + # + # pylint: disable=g-import-not-at-top,unused-import + from google.protobuf import enable_deterministic_proto_serialization + _python_deterministic_proto_serialization = True +except ImportError: + _python_deterministic_proto_serialization = False + + # Usage of this function is discouraged. Clients shouldn't care which # implementation of the API is in use. Note that there is no guarantee # that differences between APIs will be maintained. @@ -111,3 +132,8 @@ def Type(): # See comment on 'Type' above. def Version(): return _implementation_version + + +# For internal use only +def IsPythonDefaultSerializationDeterministic(): + return _python_deterministic_proto_serialization |