Merge pull request #6835 from sivel/version-compare-filter

Add version_compare filter

lib/ansible/runner/filter_plugins/core.py

@@ -23,8 +23,10 @@ import types
 import pipes
 import glob
 import re
+import operator as py_operator
 from ansible import errors
 from ansible.utils import md5s
+from distutils.version import LooseVersion, StrictVersion
 
 def to_nice_yaml(*a, **kw):
     '''Make verbose, human readable yaml'''
@@ -151,6 +153,33 @@ def symmetric_difference(a, b):
 def union(a, b):
     return set(a).union(b)
 
+def version_compare(value, version, operator='eq', strict=False):
+    ''' Perform a version comparison on a value '''
+    op_map = {
+        '==': 'eq', '=':  'eq', 'eq': 'eq',
+        '<':  'lt', 'lt': 'lt',
+        '<=': 'le', 'le': 'le',
+        '>':  'gt', 'gt': 'gt',
+        '>=': 'ge', 'ge': 'ge',
+        '!=': 'ne', '<>': 'ne', 'ne': 'ne'
+    }
+
+    if strict:
+        Version = StrictVersion
+    else:
+        Version = LooseVersion
+
+    if operator in op_map:
+        operator = op_map[operator]
+    else:
+        raise errors.AnsibleFilterError('Invalid operator type')
+
+    try:
+        method = getattr(py_operator, operator)
+        return method(Version(str(value)), Version(str(version)))
+    except Exception, e:
+        raise errors.AnsibleFilterError('Version comparison: %s' % e)
+
 class FilterModule(object):
     ''' Ansible core jinja2 filters '''
 
@@ -213,5 +242,8 @@ class FilterModule(object):
             'difference': difference,
             'symmetric_difference': symmetric_difference,
             'union': union,
+
+            # version comparison
+            'version_compare': version_compare,
         }