pythondistdeps.py: Catch all exceptions and terminate build if one is raised

python-rpm-generators.spec

@@ -1,7 +1,7 @@
 Name:           python-rpm-generators
 Summary:        Dependency generators for Python RPMs
 Version:        12
-Release:        6%{?dist}
+Release:        7%{?dist}
 
 # Originally all those files were part of RPM, so license is kept here
 License:        GPLv2+
@@ -47,6 +47,10 @@ install -Dpm0755 -t %{buildroot}%{_rpmconfigdir} *.py
 %{_rpmconfigdir}/pythonbundles.py
 
 %changelog
+* Tue May 25 2021 Tomas Orsava <torsava@redhat.com> - 12-7
+- pythondistdeps.py: Detect missing or corrupted metadata
+- pythondistdeps.py: Catch all exceptions and terminate the build if one is raised
+
 * Mon Apr 19 2021 Miro Hrončok <mhroncok@redhat.com> - 12-6
 - Get rid of distutils deprecation warning (by not using it)
 - The distutils module is deprecated in Python 3.10+

pythondistdeps.py

@@ -260,10 +260,10 @@ def get_marker_env(dist, extra):
             "extra": extra}
 
 
-if __name__ == "__main__":
+def main():
     """To allow this script to be importable (and its classes/functions
-       reused), actions are performed only when run as a main script."""
-
+       reused), actions are defined in the main function and are performed only
+       when run as a main script."""
     parser = argparse.ArgumentParser(prog=argv[0])
     group = parser.add_mutually_exclusive_group(required=True)
     group.add_argument('-P', '--provides', action='store_true', help='Print Provides')
@@ -552,3 +552,14 @@ if __name__ == "__main__":
         else:
             # Print out unversioned provides, requires, recommends, conflicts
             print(name)
+
+
+if __name__ == "__main__":
+    """To allow this script to be importable (and its classes/functions
+       reused), actions are performed only when run as a main script."""
+    try:
+        main()
+    except Exception as exc:
+        print("*** PYTHONDISTDEPS_GENERATORS_FAILED ***", flush=True)
+        raise RuntimeError("Error: pythondistdeps.py generator encountered an unhandled exception and was terminated.") from exc
+