How to get all inventory groups variables in hierarchy via Python API?

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How to get all inventory groups variables in hierarchy via Python API?



I want to collect all inventory hosts groups variables in hierarchy data struct and send them to Consul to make them available in runtime.



Calling this method - https://github.com/ansible/ansible/blob/devel/lib/ansible/inventory/manager.py#L160 I got the error


inventory.get_vars()
Traceback (most recent call last):
File "<input>", line 1, in <module>
inventory.get_vars()
File "<>/.virtualenvs/ansible27/lib/python2.7/site-packages/ansible/inventory/manager.py", line 160, in get_vars
return self._inventory.get_vars(args, kwargs)
AttributeError: 'InventoryData' object has no attribute 'get_vars'



my script


import pprint
pp = pprint.PrettyPrinter(indent=4).pprint

from ansible.parsing.dataloader import DataLoader
from ansible.vars.manager import VariableManager
from ansible.inventory.manager import InventoryManager

loader = DataLoader()
inventory = InventoryManager(loader=loader, sources='inventories/itops-vms.yml')
variable_manager = VariableManager(loader=loader, inventory=inventory)

# shows groups as well
pp(inventory.groups)

# shows dict as well with content
pp(variable_manager.get_vars())

# creates an unhandled exception
inventory.get_vars()



How to do that right way?





Did you try the list_groups method? You can check out all the available methods here github.com/ansible/ansible/blob/…
– Steven
Aug 10 at 18:11


list_groups





I don't understand what you mean by "all inventory hosts groups variables". What if variables in different groups had different values? What if hosts had variables defined?
– techraf
Aug 10 at 18:39






I want to get something similar to $ ansible-inventory -i inventories/itops-vms.yml --graph --vars result in python in some data struct which I could walk/read.
– greggyNapalm
Aug 10 at 20:55


$ ansible-inventory -i inventories/itops-vms.yml --graph --vars




1 Answer
1



The error itself seems to be caused by a bug - the get_vars method of the inventory object calls get_vars method of the InventoryData object which is not implemented.


get_vars


get_vars


InventoryData



You need to specify the group, for example:


>>> inventory.groups['all'].get_vars()
u'my_var': u'value'



You can create a dictionary with that data:


g: inventory.groups[g].get_vars() for g in inventory.groups



The above gets only the variables defined in the inventory itself (which is what the question asks about). If you wanted to get a structure with variables from group_vars, host_vars, etc. (as you indicated in your comment I want to get something similar to $ ansible-inventory -i inventories/itops-vms.yml --graph --vars you'd need to collect the data from different sources, just like Ansible does.


$ ansible-inventory -i inventories/itops-vms.yml --graph --vars






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