| Dir : /proc/self/root/opt/saltstack/salt/lib/python3.10/site-packages/salt/beacons/ |
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| Dir : //proc/self/root/opt/saltstack/salt/lib/python3.10/site-packages/salt/beacons/glxinfo.py |
"""
Beacon to emit when a display is available to a linux machine
.. versionadded:: 2016.3.0
"""
import logging
import salt.utils.beacons
import salt.utils.path
log = logging.getLogger(__name__)
__virtualname__ = "glxinfo"
last_state = {}
def __virtual__():
which_result = salt.utils.path.which("glxinfo")
if which_result is None:
err_msg = "glxinfo is missing."
log.error("Unable to load %s beacon: %s", __virtualname__, err_msg)
return False, err_msg
else:
return __virtualname__
def validate(config):
"""
Validate the beacon configuration
"""
# Configuration for glxinfo beacon should be a dictionary
if not isinstance(config, list):
return False, "Configuration for glxinfo beacon must be a list."
config = salt.utils.beacons.list_to_dict(config)
if "user" not in config:
return (
False,
"Configuration for glxinfo beacon must include a user as glxinfo is not available to root.",
)
return True, "Valid beacon configuration"
def beacon(config):
"""
Emit the status of a connected display to the minion
Mainly this is used to detect when the display fails to connect
for whatever reason.
.. code-block:: yaml
beacons:
glxinfo:
- user: frank
- screen_event: True
"""
log.trace("glxinfo beacon starting")
ret = []
config = salt.utils.beacons.list_to_dict(config)
retcode = __salt__["cmd.retcode"](
"DISPLAY=:0 glxinfo", runas=config["user"], python_shell=True
)
if "screen_event" in config and config["screen_event"]:
last_value = last_state.get("screen_available", False)
screen_available = retcode == 0
if last_value != screen_available or "screen_available" not in last_state:
ret.append({"tag": "screen_event", "screen_available": screen_available})
last_state["screen_available"] = screen_available
return ret