From e147ad42137b428b3d82cfd4d4b58ae890fb14e0 Mon Sep 17 00:00:00 2001
From: Seth Vidal <skvidal@fedoraproject.org>
Date: Tue, 30 Oct 2012 17:36:33 -0400
Subject: [PATCH] add  add_host action plugin - add hosts to inventory during a
 playbook run - lets act on those hosts in the next play

---
 lib/ansible/runner/action_plugins/add_host.py | 70 +++++++++++++++++++
 library/add_host                              | 23 ++++++
 2 files changed, 93 insertions(+)
 create mode 100644 lib/ansible/runner/action_plugins/add_host.py
 create mode 100644 library/add_host

diff --git a/lib/ansible/runner/action_plugins/add_host.py b/lib/ansible/runner/action_plugins/add_host.py
new file mode 100644
index 00000000000..2dcb85c2404
--- /dev/null
+++ b/lib/ansible/runner/action_plugins/add_host.py
@@ -0,0 +1,70 @@
+# Copyright 2012, Seth Vidal <skvidal@fedoraproject.org>
+#
+# 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/>.
+
+import ansible
+
+from ansible.callbacks import vv
+from ansible.errors import AnsibleError as ae
+from ansible.runner.return_data import ReturnData
+from ansible.utils import parse_kv, template
+from ansible.inventory.host import Host
+from ansible.inventory.group import Group
+
+class ActionModule(object):
+    ''' Create inventory hosts and groups in the memory inventory'''
+
+    ### We need to be able to modify the inventory
+    BYPASS_HOST_LOOP = True
+
+    def __init__(self, runner):
+        self.runner = runner
+
+    def run(self, conn, tmp, module_name, module_args, inject):
+        args = parse_kv(self.runner.module_args)
+        if not 'hostname' in args:
+            raise ae("'hostname' is a required argument.")
+
+        vv("created 'add_host' ActionModule: hostname=%s"%(args['hostname']))
+
+
+        result = {'changed': True}
+
+        new_host = Host(args['hostname'])
+        inventory = self.runner.inventory
+        
+        # add the new host to the 'all' group
+        allgroup = inventory.get_group('all')
+        allgroup.add_host(new_host)
+        result['changed'] = True
+        
+        # add it to the group if that was specified
+        if 'groupname' in args:
+            if not inventory.get_group(args['groupname']):
+                new_group = Group(args['groupname'])
+                inventory.add_group(new_group)
+                
+            ngobj = inventory.get_group(args['groupname'])
+            ngobj.add_host(new_host)
+            vv("created 'add_host' ActionModule: groupname=%s"%(args['groupname']))
+            result['new_group'] = args['groupname']
+            
+        result['new_host'] = args['hostname']
+        
+        return ReturnData(conn=conn, comm_ok=True, result=result)
+
+
+
diff --git a/library/add_host b/library/add_host
new file mode 100644
index 00000000000..fe9780e9219
--- /dev/null
+++ b/library/add_host
@@ -0,0 +1,23 @@
+# -*- mode: python -*-
+
+DOCUMENTATION = '''
+---
+module: add_host
+short_description: add a host (and alternatively a group) to the ansible-playbook in-memory inventory
+description:
+  - Use variables to create new hosts and groups in inventory for use in later plays of the same playbook
+version_added: 0.9
+options:
+  hostname:
+    description:
+    - The hostname/ip of the host to add to the inventory
+    required: true
+  groupname:
+    description:
+    - The groupname to add the hostname to.
+    required: false
+author: Seth Vidal
+examples:
+  - description: add host to group 'just_created'
+    code: add_host hostname=${ip_from_ec2create} groupname=just_created
+'''
\ No newline at end of file