Embed runtime protobuf dependency

This embeds the sources of the protobuf dependency
in our own project, thus avoiding issues with
other packages that may depend on different versions
of protobuf.

(The version of the generated proto sources must be
kept close to that of the protobuf dependency)

Author: fqqb

pyrightconfig.json

@@ -1,6 +1,8 @@
 {
     "ignore": [
-        "**/*_pb2.py"
+        "src/yamcs/api/*_pb2.py",
+        "src/yamcs/protobuf/_vendor",
+        "src/yamcs/protobuf/*_pb2.py"
     ],
     "reportAttributeAccessIssue": false,
     "reportInvalidTypeForm": "none"

yamcs-client/Makefile

@@ -4,7 +4,7 @@ clean:
 	rm -rf build dist *.egg-info
 
 lint:
-	flake8 src --exclude '*pb2.py' --count --show-source --statistics
+	flake8 src --exclude '*pb2.py,_vendor' --count --show-source --statistics
 
 build_legacy: lint
 	python setup.py sdist bdist_wheel

yamcs-client/README.md

@@ -24,3 +24,10 @@ Install with pip
 ## License
 
 LGPL-3.0. See [LICENSE](https://github.com/yamcs/python-yamcs-client/blob/master/LICENSE)
+
+
+## Third-Party Software
+
+This project vendors the following third-party libraries:
+
+- **protobuf** (BSD-3-Clause) - Copyright 2008 Google Inc. Located in `src/yamcs/protobuf/_vendor`.

yamcs-client/examples/modify_dump.py

@@ -1,7 +1,7 @@
 import struct
 
-from google.protobuf.internal.encoder import _VarintBytes
 from yamcs.client import split_protobuf_stream
+from yamcs.protobuf._vendor.google.protobuf.internal.encoder import _VarintBytes
 from yamcs.protobuf.table import table_pb2
 
 """

yamcs-client/setup.py

@@ -40,9 +40,6 @@
     ],
     platforms="Posix; MacOS X; Windows",
     install_requires=[
-        # Protobuf 4 is very different: https://protobuf.dev/news/2022-05-06/
-        # We should only run with it, once generating with protoc 3.19
-        "protobuf>=3.11,<4",
         "requests",
         "setuptools",
         "websocket-client",

yamcs-client/src/yamcs/api/annotations_pb2.py

@@ -1,12 +1,12 @@
 import datetime
 from typing import Any, List, Optional
 
-from google.protobuf.internal.decoder import _DecodeVarint32
 from yamcs.client.core.helpers import (
     parse_server_time,
     parse_server_timestring,
     parse_value,
 )
+from yamcs.protobuf._vendor.google.protobuf.internal.decoder import _DecodeVarint32
 from yamcs.protobuf.table import table_pb2
 
 __all__ = [