Merge pull request grpc#16836 from mehrdada/strip-manylinux-wheels

Strip manylinux1 binary wheels

Author: mehrdada

tools/run_tests/artifacts/build_package_python.sh

@@ -19,10 +19,20 @@ cd "$(dirname "$0")/../../.."
 
 mkdir -p artifacts/
 
-# All the python packages have been built in the artifact phase already
-# and we only collect them here to deliver them to the distribtest phase.
 cp -r "${EXTERNAL_GIT_ROOT}"/input_artifacts/python_*/* artifacts/ || true
 
+strip_binary_wheel() {
+  TEMP_WHEEL_DIR=$(mktemp -d)
+  unzip "$1" -d "$TEMP_WHEEL_DIR"
+  find "$TEMP_WHEEL_DIR" -name "_protoc_compiler*.so" -exec strip --strip-debug {} ";"
+  find "$TEMP_WHEEL_DIR" -name "cygrpc*.so" -exec strip --strip-debug {} ";"
+  (cd "$TEMP_WHEEL_DIR" && zip -r - .) > "$1"
+}
+
+for wheel in artifacts/*.whl; do
+    strip_binary_wheel "$wheel"
+done
+
 # TODO: all the artifact builder configurations generate a grpcio-VERSION.tar.gz
 # source distribution package, and only one of them will end up
 # in the artifacts/ directory. They should be all equivalent though.