Add dyn inventory

inventory.py

@@ -0,0 +1,80 @@
+#!/usr/bin/env python
+
+'''
+This is a python script used for an example of a dynamic inventory script
+for use with Ansible.
+
+call it with --list to show list.
+call it with --host [hostname] for specific hosts
+
+
+'''
+
+import os
+import argparse
+import sys
+
+try:
+    import json
+except ImportError:
+    import simplejson as json
+
+
+class OurInventory(object):
+
+    def __init__(self):
+        self.inventory = {}
+        self.read_cli_args()
+
+        # This section is called with `--list`.
+        if self.args.list:
+            self.inventory = self.our_inventory()
+        # this section is called with `--host [hostname]`.
+        elif self.args.host:
+            # We return _meta info `--list` so not complete.
+            self.inventory = self.empty_inventory()
+
+        # No vars or group? Return as an empty inventory.
+        else:
+            self.inventory = self.empty_inventory()
+
+        print (json.dumps(self.inventory));
+
+    # This is an example used simply for testing and so we can run a dymanic script without actualy setting up a server
+    # 
+
+    def our_inventory(self):
+        return {
+            'group': {
+                'hosts': ['servera.lab.example.com', 'serverb.lab.example.com'],
+                'vars': {
+                    'ansible_user': 'ansible',
+                    'instruktor': 'Simonas'
+                }
+            },
+            '_meta': {
+                'hostvars': {
+                    'servera.lab.example.com': {
+                        'logs_folder': '/var/log'
+                    },
+                    'serverb.lab.example.com': {
+                        'logs_folder': '/var/log2'
+                    }
+                }
+            }
+        }
+
+    # Empty inventory for testing.
+    def empty_inventory(self):
+        return {'_meta': {'hostvars': {}}}
+
+    # Lets take the args passed to us via the command line.
+
+    def read_cli_args(self):
+        parser = argparse.ArgumentParser()
+        parser.add_argument('--list', action = 'store_true')
+        parser.add_argument('--host', action = 'store')
+        self.args = parser.parse_args()
+
+# Get the inventory.
+OurInventory()