Update vagrant external inventory file to handle multiple boxes, and --list and --host params.

plugins/inventory/vagrant.py

@@ -0,0 +1,132 @@
+#!/usr/bin/env python
+"""
+Vagrant external inventory script. Automatically finds the IP of the booted vagrant vm(s), and
+returns it under the host group 'vagrant'
+
+Example Vagrant configuration using this script:
+
+    config.vm.provision :ansible do |ansible|
+      ansible.playbook = "./provision/your_playbook.yml"
+      ansible.inventory_file = "./provision/inventory/vagrant.py"
+      ansible.verbose = true
+    end
+"""
+
+# Copyright (C) 2013  Mark Mandel <mark@compoundtheory.com>
+#
+# This program 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.
+#
+# This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+
+#
+# Thanks to the spacewalk.py inventory script for giving me the basic structure
+# of this.
+#
+
+import sys
+import subprocess
+import re
+import string
+from optparse import OptionParser
+try:
+    import json
+except:
+    import simplejson as json
+
+# Options
+#------------------------------
+
+parser = OptionParser(usage="%prog [options] --list | --host <machine>")
+parser.add_option('--list', default=False, dest="list", action="store_true",
+                  help="Produce a JSON consumable grouping of Vagrant servers for Ansible")
+parser.add_option('--host', default=None, dest="host",
+                  help="Generate additional host specific details for given host for Ansible")
+(options, args) = parser.parse_args()
+
+#
+# helper functions
+#
+
+# get all the ssh configs for all boxes in an array of dictionaries.
+def get_ssh_config():
+    configs = []
+
+    boxes = list_running_boxes()
+
+    for box in boxes:
+        config = get_a_ssh_config(box)
+        configs.append(config)
+
+    return configs
+
+#list all the running boxes
+def list_running_boxes():
+    output = subprocess.check_output(["vagrant", "status"]).split('\n')
+
+    boxes = []
+
+    for line in output:
+        matcher = re.search("([^\s]+)[\s]+running \(.+", line)
+        if matcher:
+            boxes.append(matcher.group(1))
+
+
+    return boxes
+
+#get the ssh config for a single box
+def get_a_ssh_config(box_name):
+    """Gives back a map of all the machine's ssh configurations"""
+
+    output = subprocess.check_output(["vagrant", "ssh-config", box_name]).split('\n')
+
+    config = {}
+    for line in output:
+        if line.strip() != '':
+            matcher = re.search("(  )?([a-zA-Z]+) (.*)", line)
+            config[matcher.group(2)] = matcher.group(3)
+
+    return config
+
+
+# List out servers that vagrant has running
+#------------------------------
+if options.list:
+    ssh_config = get_ssh_config()
+    hosts = { 'vagrant': []}
+
+    for data in ssh_config:
+        hosts['vagrant'].append(data['HostName'])
+
+    print json.dumps(hosts)
+    sys.exit(1)
+
+# Get out the host details
+#------------------------------
+elif options.host:
+    result = {}
+    ssh_config = get_ssh_config()
+
+    details = filter(lambda x: (x['HostName'] == options.host), ssh_config)
+    if len(details) > 0:
+        #pass through the port, in case it's non standard.
+        result = details[0]
+        result['ansible_ssh_port'] = result['Port']
+
+    print json.dumps(result)
+    sys.exit(1)
+
+
+# Print out help
+#------------------------------
+else:
+    parser.print_help()
+    sys.exit(1)