Adding module_utils to allow for common utilites that can be shared among ansible modules.

ansible/ansible.cfg

@@ -13,6 +13,7 @@
 
 inventory      = /etc/ansible/hosts
 library        = library:library/ixia
+module_utils   = module_utils
 remote_tmp     = $HOME/.ansible/tmp
 pattern        = *
 forks          = 5

ansible/library/conn_graph_facts.py

@@ -8,6 +8,7 @@
 from operator import itemgetter
 from itertools import groupby
 from collections import defaultdict
+from ansible.module_utils.debug_utils import create_debug_file, print_debug_msg
 
 DOCUMENTATION='''
 module: conn_graph_facts.py
@@ -270,10 +271,12 @@ def find_graph(hostnames):
 
     # Finding the graph file contains all duts from hostnames,
     for fn in file_list:
+        print_debug_msg(debug_fname, "Looking at conn graph file: %s for hosts %s" % (fn, hostnames))
         filename = os.path.join(LAB_GRAPHFILE_PATH, fn)
         lab_graph = Parse_Lab_Graph(filename)
         lab_graph.parse_graph()
         if lab_graph.contains_hosts(hostnames):
+            print_debug_msg(debug_fname, ("Returning lab graph from conn graph file: %s for hosts %s" % (fn, hostnames)))
             return lab_graph
 
     # Fallback to return an empty connection graph, this is
@@ -284,6 +287,8 @@ def find_graph(hostnames):
     lab_graph.parse_graph()
     return lab_graph
 
+debug_fname = None
+
 def main():
     module = AnsibleModule(
         argument_spec=dict(
@@ -297,6 +302,8 @@ def main():
         supports_check_mode=True
     )
     m_args = module.params
+    global debug_fname
+    debug_fname = create_debug_file("/tmp/conn_graph_debug.txt")
 
     hostnames = m_args['hosts']
     anchor = m_args['anchor']

ansible/module_utils/debug_utils.py

@@ -0,0 +1,25 @@
+import os
+from pprint import pprint
+from ansible.module_utils.basic import datetime
+
+
+def create_debug_file(debug_fname, add_timestamp=True):
+    curtime = datetime.datetime.now().isoformat()
+    if add_timestamp:
+        # Check if there is an extension
+        fname_split = os.path.splitext(debug_fname)
+        if fname_split[1] != '':
+            # We have an extension
+            timed_debug_fname = (fname_split[0] + ".%s" + fname_split[1]) % curtime
+        else:
+            timed_debug_fname = (fname_split[0] + ".%s") % curtime
+    else:
+        timed_debug_fname = debug_fname
+    if os.path.exists(timed_debug_fname) and os.path.isfile(timed_debug_fname):
+        os.remove(timed_debug_fname)
+    return timed_debug_fname
+
+
+def print_debug_msg(debug_fname, msg):
+    with open(debug_fname, 'a') as fp:
+        pprint(msg, fp)