Re-enable separation of protobufs for Python 2 and Python 3

Это откат коммита https://a.yandex-team.ru/arcadia/commit/rXXXXXX
И соответственно возврат коммитов https://a.yandex-team.ru/arcadia/commit/rXXXXXX и https://a.yandex-team.ru/arcadia/commit/rXXXXXX

Починка причины отката влилась здесь: https://a.yandex-team.ru/arcadia/commit/rXXXXXX
ae529e54d3ef7992b0e9f152373bc300061c1293

2 files changed, 50 insertions, 37 deletions

diff --git a/contrib/python/protobuf/py2/google/protobuf/pyext/descriptor_pool.cc b/contrib/python/protobuf/py2/google/protobuf/pyext/descriptor_pool.cc
index a53411e797..3c08de1dc0 100644
--- a/contrib/python/protobuf/py2/google/protobuf/pyext/descriptor_pool.cc
+++ b/contrib/python/protobuf/py2/google/protobuf/pyext/descriptor_pool.cc
@@ -592,31 +592,40 @@ static PyObject* AddSerializedFile(PyObject* pself, PyObject* serialized_pb) {
     PyErr_SetString(PyExc_TypeError, "Couldn't parse file content!");
     return NULL;
   }
-
+  // DescriptorPool::InternalAddGeneratedFile(message_type, message_len);
   // If the file was already part of a C++ library, all its descriptors are in
   // the underlying pool.  No need to do anything else.
   const FileDescriptor* generated_file = NULL;
   if (self->underlay) {
     generated_file = self->underlay->FindFileByName(file_proto.name());
   }
+
   if (generated_file != NULL) {
-    return PyFileDescriptor_FromDescriptorWithSerializedPb(
-        generated_file, serialized_pb);
+    return PyFileDescriptor_FromDescriptorWithSerializedPb(generated_file, serialized_pb);
   }
 
   BuildFileErrorCollector error_collector;
-  const FileDescriptor* descriptor =
-      self->pool->BuildFileCollectingErrors(file_proto,
-                                            &error_collector);
-  if (descriptor == NULL) {
-    PyErr_Format(PyExc_TypeError,
-                 "Couldn't build proto file into descriptor pool!\n%s",
-                 error_collector.error_message.c_str());
-    return NULL;
+
+  generated_file = self->pool->BuildFileCollectingErrors(file_proto, &error_collector);
+
+  if (generated_file != NULL) {
+    return PyFileDescriptor_FromDescriptorWithSerializedPb(generated_file, serialized_pb);
+  }
+
+  DescriptorPool::InternalAddGeneratedFile(message_type, message_len);
+
+  if (self->underlay) {
+    generated_file = self->underlay->FindFileByName(file_proto.name());
+  }
+
+  if (generated_file != NULL) {
+    return PyFileDescriptor_FromDescriptorWithSerializedPb(generated_file, serialized_pb);
   }
 
-  return PyFileDescriptor_FromDescriptorWithSerializedPb(
-      descriptor, serialized_pb);
+  PyErr_Format(PyExc_TypeError,
+                 "Couldn't build proto file into descriptor pool!\n%s",
+                 error_collector.error_message.c_str());
+  return NULL;
 }
 
 static PyObject* Add(PyObject* self, PyObject* file_descriptor_proto) {
diff --git a/contrib/python/protobuf/py2/ya.make b/contrib/python/protobuf/py2/ya.make
index c66515d586..b369e9bf4b 100644
--- a/contrib/python/protobuf/py2/ya.make
+++ b/contrib/python/protobuf/py2/ya.make
@@ -9,41 +9,22 @@ VERSION(3.17.3)
 ORIGINAL_SOURCE(https://github.com/protocolbuffers/protobuf/archive/v3.17.3.tar.gz)
 
 PEERDIR(
-    contrib/libs/protobuf
-    contrib/libs/protobuf/builtin_proto/protos_from_protobuf
-    contrib/libs/protobuf/builtin_proto/protos_from_protoc
+    contrib/libs/protobuf_old
+    contrib/libs/protobuf_old/builtin_proto/protos_from_protobuf
+    #contrib/libs/protobuf_old/builtin_proto/protos_from_protoc
     contrib/python/six
 )
 
 ADDINCL(
     contrib/python/protobuf/py2
+    contrib/libs/protobuf_old
+    contrib/libs/protobuf_old/src
 )
 
 NO_COMPILER_WARNINGS()
 
 NO_LINT()
 
-CFLAGS(
-    -DPYTHON_PROTO2_CPP_IMPL_V2
-)
-
-SRCS(
-    google/protobuf/internal/api_implementation.cc
-    google/protobuf/pyext/descriptor.cc
-    google/protobuf/pyext/descriptor_containers.cc
-    google/protobuf/pyext/descriptor_database.cc
-    google/protobuf/pyext/descriptor_pool.cc
-    google/protobuf/pyext/extension_dict.cc
-    google/protobuf/pyext/field.cc
-    google/protobuf/pyext/map_container.cc
-    google/protobuf/pyext/message.cc
-    google/protobuf/pyext/message_factory.cc
-    google/protobuf/pyext/message_module.cc
-    google/protobuf/pyext/repeated_composite_container.cc
-    google/protobuf/pyext/repeated_scalar_container.cc
-    google/protobuf/pyext/unknown_fields.cc
-)
-
 PY_REGISTER(
     google.protobuf.internal._api_implementation
     google.protobuf.pyext._message
@@ -85,4 +66,27 @@ PY_SRCS(
     google/protobuf/util/__init__.py
 )
 
+NO_LTO()
+
+CFLAGS(
+    -DPYTHON_PROTO2_CPP_IMPL_V2
+)
+
+SRCS(
+    google/protobuf/internal/api_implementation.cc
+    google/protobuf/pyext/descriptor.cc
+    google/protobuf/pyext/descriptor_containers.cc
+    google/protobuf/pyext/descriptor_database.cc
+    google/protobuf/pyext/descriptor_pool.cc
+    google/protobuf/pyext/extension_dict.cc
+    google/protobuf/pyext/field.cc
+    google/protobuf/pyext/map_container.cc
+    google/protobuf/pyext/message.cc
+    google/protobuf/pyext/message_factory.cc
+    google/protobuf/pyext/message_module.cc
+    google/protobuf/pyext/repeated_composite_container.cc
+    google/protobuf/pyext/repeated_scalar_container.cc
+    google/protobuf/pyext/unknown_fields.cc
+)
+
 END()