Fall back to building if GCS cannot be reached

1 files changed, 19 insertions, 16 deletions

diff --git a/src/python/grpcio/commands.py b/src/python/grpcio/commands.py
index 8901db81c5..e6df03fd74 100644
--- a/src/python/grpcio/commands.py
+++ b/src/python/grpcio/commands.py
@@ -146,22 +146,25 @@ class Install(install.install, EggNameMixin):
   def run(self):
     if self.use_grpc_custom_bdist:
       try:
-        egg_path = _get_grpc_custom_bdist_egg(self.egg_name(True),
-                                              self.egg_name(False))
-      except CommandError as error:
-        sys.stderr.write(
-            '\nWARNING: Failed to acquire grpcio prebuilt binary:\n'
-            '{}.\n\n'.format(error.message))
-        raise
-      try:
-        self._run_bdist_retrieval_install(egg_path)
-      except Exception as error:
-        # if anything else happens (and given how there's no way to really know
-        # what's happening in setuptools here, I mean *anything*), warn the user
-        # and fall back to building from source.
-        sys.stderr.write(
-            '{}\nWARNING: Failed to install grpcio prebuilt binary.\n\n'
-                .format(traceback.format_exc()))
+        try:
+          egg_path = _get_grpc_custom_bdist_egg(self.egg_name(True),
+                                                self.egg_name(False))
+        except CommandError as error:
+          sys.stderr.write(
+              '\nWARNING: Failed to acquire grpcio prebuilt binary:\n'
+              '{}.\n\n'.format(error.message))
+          raise
+        try:
+          self._run_bdist_retrieval_install(egg_path)
+        except Exception as error:
+          # if anything else happens (and given how there's no way to really know
+          # what's happening in setuptools here, I mean *anything*), warn the user
+          # and fall back to building from source.
+          sys.stderr.write(
+              '{}\nWARNING: Failed to install grpcio prebuilt binary.\n\n'
+                  .format(traceback.format_exc()))
+          raise
+      except Exception:
         install.install.run(self)
     else:
       install.install.run(self)