add debug logging to jk diff

jenskipper/cli/diff.py

@@ -1,5 +1,6 @@
 import difflib
 import sys
+import logging
 
 try:
     from lxml import etree  # NOQA
@@ -17,6 +18,9 @@
 from .. import exceptions
 
 
+logger = logging.getLogger(__name__)
+
+
 @click.command()
 @click.option('-r/-f', '--reverse/--no-reverse', help='Show reverse diffs '
               '(default order is remote -> local).', default=False)
@@ -92,6 +96,7 @@ def get_job_diff(base_dir, jenkins_url, job_name, context_overrides=None,
     '''
     Get the diff lines printed by :func:`print_job_diff`.
     '''
+    logger.debug('diffing %s', job_name)
     if context_overrides is None:
         context_overrides = {}
     local_xml, _ = repository.get_job_conf(base_dir, job_name,