Adding fallback support for pyyaml.

2 files changed, 37 insertions, 15 deletions

diff --git a/roles/lib_utils/src/class/yedit.py b/roles/lib_utils/src/class/yedit.py
index 8542fe5c7..4145a03b6 100644
--- a/roles/lib_utils/src/class/yedit.py
+++ b/roles/lib_utils/src/class/yedit.py
@@ -198,7 +198,11 @@ class Yedit(object):
         if hasattr(self.yaml_dict, 'fa'):
             self.yaml_dict.fa.set_block_style()
 
-        Yedit._write(self.filename, yaml.dump(self.yaml_dict, Dumper=yaml.RoundTripDumper))
+        # pylint: disable=no-member
+        if hasattr(yaml, 'RoundTripDumper'):
+            Yedit._write(self.filename, yaml.dump(self.yaml_dict, Dumper=yaml.RoundTripDumper))
+        else:
+            Yedit._write(self.filename, yaml.dump(self.yaml_dict, default_flow_style=False))
 
         return (True, self.yaml_dict)
 
@@ -238,7 +242,10 @@ class Yedit(object):
         # check if it is yaml
         try:
             if content_type == 'yaml' and contents:
-                self.yaml_dict = yaml.load(contents, yaml.RoundTripLoader)
+                if hasattr(yaml, 'RoundTripLoader'):
+                    self.yaml_dict = yaml.load(contents, yaml.RoundTripLoader)
+                else:
+                    self.yaml_dict = yaml.load(contents)
                 # pylint: disable=no-member
                 if hasattr(self.yaml_dict, 'fa'):
                     self.yaml_dict.fa.set_block_style()
@@ -406,12 +413,18 @@ class Yedit(object):
             return (False, self.yaml_dict)
 
         # deepcopy didn't work
-        tmp_copy = yaml.load(yaml.round_trip_dump(self.yaml_dict,
-                                                  default_flow_style=False),
-                             yaml.RoundTripLoader)
-        # pylint: disable=no-member
-        if hasattr(self.yaml_dict, 'fa'):
-            tmp_copy.fa.set_block_style()
+        if hasattr(yaml, 'round_trip_dump'):
+            tmp_copy = yaml.load(yaml.round_trip_dump(self.yaml_dict,
+                                                      default_flow_style=False),
+                                 yaml.RoundTripLoader)
+
+            # pylint: disable=no-member
+            if hasattr(self.yaml_dict, 'fa'):
+                tmp_copy.fa.set_block_style()
+
+        else:
+            tmp_copy = copy.deepcopy(self.yaml_dict)
+
         result = Yedit.add_entry(tmp_copy, path, value, self.separator)
         if not result:
             return (False, self.yaml_dict)
@@ -424,11 +437,15 @@ class Yedit(object):
         ''' create a yaml file '''
         if not self.file_exists():
             # deepcopy didn't work
-            tmp_copy = yaml.load(yaml.round_trip_dump(self.yaml_dict, default_flow_style=False),  # noqa: E501
-                                 yaml.RoundTripLoader)
-            # pylint: disable=no-member
-            if hasattr(self.yaml_dict, 'fa'):
-                tmp_copy.fa.set_block_style()
+            if hasattr(yaml, 'round_trip_dump'):
+                tmp_copy = yaml.load(yaml.round_trip_dump(self.yaml_dict, default_flow_style=False),  # noqa: E501
+                                     yaml.RoundTripLoader)
+                # pylint: disable=no-member
+                if hasattr(self.yaml_dict, 'fa'):
+                    tmp_copy.fa.set_block_style()
+            else:
+                tmp_copy = copy.deepcopy(self.yaml_dict)
+
             result = Yedit.add_entry(tmp_copy, path, value, self.separator)
             if result:
                 self.yaml_dict = tmp_copy
diff --git a/roles/lib_utils/src/lib/import.py b/roles/lib_utils/src/lib/import.py
index d892353a1..ea9fb8ce5 100644
--- a/roles/lib_utils/src/lib/import.py
+++ b/roles/lib_utils/src/lib/import.py
@@ -4,11 +4,16 @@
 # pylint: disable=wrong-import-order,wrong-import-position,unused-import
 
 from __future__ import print_function  # noqa: F401
+import copy  # noqa: F401
 import json  # noqa: F401
 import os  # noqa: F401
 import re  # noqa: F401
-# pylint: disable=import-error
-import ruamel.yaml as yaml  # noqa: F401
 import shutil  # noqa: F401
 
+# pylint: disable=import-error
+try:
+    import ruamel.yaml as yaml  # noqa: F401
+except ImportError:
+    import yaml
+
 from ansible.module_utils.basic import AnsibleModule