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"""
Venafi Pillar Certificates

This module will only return pillar data if the ``venafi`` runner module has
already been used to create certificates.

To configure this module, set ``venafi`` to ``True`` in the ``ext_pillar``
section of your ``master`` configuration file:

.. code-block:: yaml

    ext_pillar:
      - venafi: True
"""

import logging

import salt.cache
import salt.syspaths as syspaths

__virtualname__ = "venafi"
log = logging.getLogger(__name__)


def __virtual__():
    """
    No special requirements outside of Salt itself
    """
    return __virtualname__


def ext_pillar(minion_id, pillar, conf):
    """
    Return an existing set of certificates
    """
    cache = salt.cache.Cache(__opts__, syspaths.CACHE_DIR)

    ret = {}
    for dns_name in cache.list("venafi/domains"):
        data = cache.fetch("venafi/domains", dns_name)
        if data["minion_id"] == minion_id:
            ret[dns_name] = data
    return {"venafi": ret}