Don't allow precompiled binaries in tests
Before it was possible for precompiled binaries of the Cython layer to
be downloaded during a test run if the metadata of the host machine's
gRPC Python project matched the metadata of a file in cloud storage. Now
we disallow this, and fix a bug where the relevant environment variable
was ineffectual.
diff --git a/src/python/grpcio/precompiled.py b/src/python/grpcio/precompiled.py
index d34250b..aeeb275 100644
--- a/src/python/grpcio/precompiled.py
+++ b/src/python/grpcio/precompiled.py
@@ -91,6 +91,9 @@
def update_setup_arguments(setup_arguments):
+ if not USE_PRECOMPILED_BINARIES:
+ sys.stderr.write('not using precompiled extension')
+ return
url = '{}/{}.so'.format(BINARIES_REPOSITORY, _tagged_ext_name('cygrpc'))
target_path = os.path.join(PYTHON_STEM, 'grpc/_cython/cygrpc.so')
try: