Fixed problem with wrong pymongo package

Author: Sergei Antipov

library/mongodb_user.py

@@ -148,6 +148,15 @@
 # MongoDB module specific support methods.
 #
 
+def check_compatibility(module, client):
+    srv_info = client.server_info()
+    if LooseVersion(srv_info['version']) >= LooseVersion('3.0') and LooseVersion(PyMongoVersion) <= LooseVersion('3.0'):
+        module.fail_json(msg=' (Note: you must use pymongo 3.0+ with MongoDB >= 3.0)')
+    elif LooseVersion(srv_info['version']) >= LooseVersion('2.6') and LooseVersion(PyMongoVersion) <= LooseVersion('2.7'):
+        module.fail_json(msg=' (Note: you must use pymongo 2.7.x-2.9.x with MongoDB 2.6)')
+    elif LooseVersion(PyMongoVersion) <= LooseVersion('2.5'):
+        module.fail_json(msg=' (Note: you must be on mongodb 2.4+ and pymongo 2.5+ to use the roles param)')
+            
 def user_find(client, user):
     for mongo_user in client["admin"].system.users.find():
         if mongo_user['user'] == user:
@@ -165,13 +174,6 @@ def user_add(module, client, db_name, user, password, roles):
             db.add_user(user, password, None, roles=roles)
         except OperationFailure, e:
             err_msg = str(e)
-            srv_info = client.server_info()
-            if LooseVersion(srv_info['version']) >= LooseVersion('3.0') and LooseVersion(PyMongoVersion) <= LooseVersion('3.0'):
-                err_msg = err_msg + ' (Note: you must use pymongo 3.0+ with MongoDB >= 3.0)'
-            elif LooseVersion(srv_info['version']) >= LooseVersion('2.6') and LooseVersion(PyMongoVersion) <= LooseVersion('2.7'):
-                err_msg = err_msg + ' (Note: you must use pymongo 2.7.x-2.9.x with MongoDB 2.6)'
-            elif LooseVersion(PyMongoVersion) <= LooseVersion('2.5'):
-                err_msg = err_msg + ' (Note: you must be on mongodb 2.4+ and pymongo 2.5+ to use the roles param)'
             module.fail_json(msg=err_msg)
 
 def user_remove(module, client, db_name, user):
@@ -262,6 +264,8 @@ def main():
     except ConnectionFailure, e:
         module.fail_json(msg='unable to connect to database: %s' % str(e))
 
+    check_compatibility(module, client)
+    
     if state == 'present':
         if password is None and update_password == 'always':
             module.fail_json(msg='password parameter required when adding a user unless update_password is set to on_create')