Adding initial credential and invsrc for Tower

* New credential type for Tower
* Inventory source definitions and migrations for Tower
* Initial Tower inventory source script

awx/plugins/inventory/tower.py

@@ -0,0 +1,112 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+#
+# Copyright (c) 2016 Red Hat, Inc.
+#
+# This file is part of Ansible
+#
+# Ansible is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# Ansible is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Ansible.  If not, see <http://www.gnu.org/licenses/>.
+#
+"""
+Ansible Tower/AWX dynamic inventory script
+==========================================
+
+Generates dynamic inventory for Tower
+
+Author: Matthew Jones (@matburt)
+"""
+
+import argparse
+import re
+import os
+import sys
+import json
+import requests
+from requests.auth import HTTPBasicAuth
+from urlparse import urljoin
+
+
+def parse_configuration():
+    """
+    Create command line parser for oVirt dynamic inventory script.
+    """
+    parser = argparse.ArgumentParser(
+        description='Ansible dynamic inventory script for Ansible Tower.',
+    )
+    parser.add_argument(
+        '--list',
+        action='store_true',
+        default=True,
+        help='Return all hosts known to Tower given a particular inventory',
+    )
+    parser.parse_args()
+    host_name = os.environ.get("TOWER_HOSTNAME", None)
+    username = os.environ.get("TOWER_USERNAME", None)
+    password = os.environ.get("TOWER_PASSWORD", None)
+    ignore_ssl = os.environ.get("TOWER_IGNORE_SSL", "0").lower() in ("1", "yes", "true")
+    inventory = os.environ.get("TOWER_INVENTORY", None)
+
+    errors = []
+    if not host_name:
+        errors.append("Missing TOWER_HOSTNAME in environment")
+    if not username:
+        errors.append("Missing TOWER_USERNAME in environment")
+    if not password:
+        errors.append("Missing TOWER_PASSWORD in environment")
+    if not inventory:
+        errors.append("Missing TOWER_INVENTORY in environment")
+    if errors:
+        print("\n".join(errors))
+        sys.exit(1)
+        
+    return dict(tower_host=host_name,
+                tower_user=username,
+                tower_pass=password,
+                tower_inventory=inventory,
+                ignore_ssl=ignore_ssl)
+
+
+def read_tower_inventory(tower_host, tower_user, tower_pass, inventory, ignore_ssl=False):
+    if not re.match('(?:http|https)://', tower_host):
+        tower_host = "https://{}".format(tower_host)
+    inventory_url = urljoin(tower_host, "/api/v2/inventories/{}/script/?hostvars=1".format(inventory))
+    try:
+        response = requests.get(inventory_url,
+                                auth=HTTPBasicAuth(tower_user, tower_pass),
+                                verify=not ignore_ssl)
+        if response.ok:
+            return response.json()
+        json_reason = response.json()
+        reason = json_reason.get('detail', 'Retrieving Tower Inventory Failed')
+    except requests.ConnectionError, e:
+        reason = "Connection to remote host failed: {}".format(e)
+    print(reason)
+    sys.exit(1)
+
+
+def main():
+    config = parse_configuration()
+    inventory_hosts = read_tower_inventory(config['tower_host'],
+                                           config['tower_user'],
+                                           config['tower_pass'],
+                                           config['tower_inventory'],
+                                           ignore_ssl=config['ignore_ssl'])
+    print(
+        json.dumps(
+            inventory_hosts
+        )
+    )
+
+if __name__ == '__main__':
+    main()