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ansible_terraform.py
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Authored by vlorentz on Apr 17 2019, 2:33 PM.
azure@desktop5~/ansible   master ✚  cat plugins/inventory/terraform.py
import json
import os
from subprocess import check_output
from ansible.plugins.inventory import BaseInventoryPlugin, Constructable, Cacheable
def get_state(terraform_dir):
terraform_bin = os.environ.get('ANSIBLE_TF_BIN', 'terraform')
output = check_output([terraform_bin, 'state', 'pull', '-input=false'],
cwd=terraform_dir)
return json.loads(output)
class InventoryModule(BaseInventoryPlugin, Constructable, Cacheable):
NAME = 'terraform'
def verify_file(self, path):
"""Checks the path is a directory containing a .tf file."""
return path.endswith('.tf')
def parse(self, inventory, loader, path, cache=True):
super(InventoryModule, self).parse(inventory, loader, path, cache)
state = get_state(os.path.dirname(path))
for module in state['modules']:
self._parse_azurerm_resources(module['resources'])
def _parse_azurerm_resources(self, resources):
"""Populate the ansible inventory from azure resources."""
interfaces = self._get_azurerm_interfaces(resources)
self._parse_azurerm_vms(interfaces, resources)
def _get_azurerm_interfaces(self, resources):
"""Returns a dict associating the interface's attributes to
each interface ID."""
interfaces = {}
for (name, resource) in resources.items():
if resource['type'] == 'azurerm_network_interface':
id_ = resource['primary']['id']
interfaces[id_] = resource['primary']['attributes']
return interfaces
def _parse_azurerm_vms(self, interfaces, resources):
"""Populates the ansible inventory with the VMs in the `resources`
dict."""
for (name, resource) in resources.items():
if resource['type'] == 'azurerm_virtual_machine':
attributes = resource['primary']['attributes']
host = attributes['name']
self.inventory.add_host(host)
interface = interfaces[attributes['network_interface_ids.0']]
ip_address = interface['private_ip_address']
self.inventory.set_variable(host, 'ansible_host', ip_address)
azure@desktop5~/ansible   master ✚  cat ansible.cfg| sed "s/#.*//" | grep inventory
inventory = /home/azure/ansible/hosts,/home/azure/ansible/terraform/test.tf
inventory_plugins = /home/azure/ansible/plugins/inventory
[inventory]
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