tasks.py
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from __future__ import absolute_import
from common.models import *
from django.core.exceptions import ObjectDoesNotExist
import scheduler
import scheduler.tasks
from celery.task import Task
from celery import app
import observation_manager
import observation_manager.tasks
from devices.Telescope import TelescopeController
from devices.CameraVIS import VISCameraController
from devices.CameraNIR import NIRCameraController
from devices.Dome import DomeController
from devices.PLC import PLCController
from django.conf import settings
from utils.JDManipulator import *
import utils.Logger as L
DEBUG_FILE = False
log = L.setupLogger("MajordomeTaskLogger", "Majordome")
'''
Task to handle the execution of the program
check the environment status in database
check the devices status (telescope / cameras)
check if the last schedule made has to be planned
launch schedule's sequences
'''
class Majordome(Task):
loop_speed = 1
julian_div = 86400
executing_sequence = None
next_sequence = None
status_tel = ""
status_nir = ""
status_vis = ""
status_dom = ""
timers = {}
functions = {}
schedule = None
majordome_status = "STARTING"
'''
Check if the instrument status is valid
'''
def isValidStatus(self, status):
# TODO REMOVE COMMENT AND CHANGE WHEN DEFINED
# if (status == "" or status == "ERROR" or status == "FAILED" or status == "NOT_SET"):
# return (False)
return (True)
def setContext(self):
self.tel = TelescopeController()
self.vis_camera = VISCameraController()
self.nir_camera = NIRCameraController()
self.plc = PLCController()
self.dom = DomeController()
return (0)
'''
Function called by celery task
Behavior:
Init telescope / cameras
set night limits
check the software version
launch the majordome loop
'''
def run(self):
self.updateSoftware()
self.setContext()
self.setTime()
self.majordome_status = "EXECUTING"
self.loop()
'''
Reads the softwares versions in the settings.py, store them in the DB and send them to the IC.
'''
def updateSoftware(self):
versions = settings.MODULES_VERSIONS
for module, version in versions.items():
same_module_versions = Version.objects.filter(module_name=module)
if same_module_versions.count() == 0:
Version.objects.create(module_name=module, version=version)
elif same_module_versions.order_by("-created")[0].version != version:
Version.objects.create(module_name=module, version=version)
return (0)
'''
Loop to wait for the device to be idle avec the starting configurations.
'''
def waitDevices(self):
# TODO Maybe remove comment if we need to wait the devices connection / valid status
# while self.status_vis == "" and self.status_tel == "" and self.status_nir == "" and self.status_dom == "":
self.status_vis = self.vis_camera.get("STATUS")
self.status_nir = self.nir_camera.get("STATUS")
self.status_tel = self.tel.get("STATUS")
self.status_dom = self.dom.get("STATUS")
print("Devices ready !")
return (0)
'''
Computes the beginning and the end of the following (or current) night
'''
def setTime(self):
self.night_start = getNightStart()
self.night_end = getNightEnd()
self.night_start_jd = secondsToJulianDate(getNightStart())
self.night_end_jd = secondsToJulianDate(getNightEnd())
self.timer_night_start = self.night_start - getCurrentTime()
self.timer_night_end = self.night_end - getCurrentTime()
self.timer_status = 5
self.timer_plc = 2
self.timer_schedule = 1
self.timer_sequence = 1
if (self.night_start - 120 > getCurrentTime()):
self.timer_night_start = self.night_start - 120 - getCurrentTime()
self.timer_night_end = self.night_end - getCurrentTime()
if (getCurrentTime() > self.night_start):
self.adaptTimers()
self.timers = {
"status": self.timer_status,
"environment": self.timer_plc,
"night_start": self.timer_night_start,
"night_end": self.timer_night_end,
"schedule": self.timer_schedule,
"sequence": self.timer_sequence
}
if (settings.DEBUG and DEBUG_FILE):
log.info("Majordome started with timers : " + str(self.timers))
# Functions called during the loop
self.functions = {
"status": self.handleStatusTimer,
"environment": self.handleEnvironmentTimer,
"night_start": self.handleNightStartTimer,
"night_end": self.handleNightEndTimer,
"schedule": self.handleScheduleTimer,
"sequence": self.handleSequenceTimer
}
return (0)
# TODO adapt timers if the majordome is started during the night
def adaptTimers(self):
pass
def logDB(self, message: str):
Log.objects.create(agent="Majordome", message=message)
'''
Infinite loop according to the majordome behavior
'''
def loop(self):
while (self.majordome_status != "SHUTDOWN"):
minimal_timer = min(self.timers, key=self.timers.get)
if (self.timers[minimal_timer] > 0):
time.sleep(self.timers[minimal_timer])
self.timers = {key: value - self.timers[minimal_timer] for key, value in self.timers.items()}
for timer_name, timer_value in self.timers.items():
if (timer_value <= 0):
if timer_name in self.functions:
self.logDB("Executing timer " + str(timer_name))
self.functions[timer_name]()
else:
if (settings.DEBUG and DEBUG_FILE):
log.info("Timer : " + str(timer_name) + "is not known by the Majordome")
self.logDB("Timer " + str(timer_name) + " unknown")
if (settings.DEBUG and DEBUG_FILE):
log.info("Timer : " + str(timer_name) + " executed")
return (0)
def handleEnvironmentTimer(self):
self.timers["environment"] = self.timer_plc
try:
site_status = SiteWatch.objects.latest('updated')
weather_status = WeatherWatch.objects.latest('updated')
except ObjectDoesNotExist:
if (settings.DEBUG and DEBUG_FILE):
log.info("No site_status or weather_status found in database")
return (1)
self.handlePLC(site_status, weather_status)
return (0)
def handleStatusTimer(self):
self.timers["status"] = self.timer_status
self.status_tel = self.tel.get("STATUS")
self.status_nir = self.nir_camera.get("STATUS")
self.status_vis = self.vis_camera.get("STATUS")
self.status_dom = self.dom.get("STATUS")
self.handleStatus()
return (0)
def handleSequenceTimer(self):
self.timers["sequence"] = self.timer_sequence
if (self.executing_sequence):
self.handleSequence(self.executing_sequence[0],
self.executing_sequence[1], self.executing_sequence[2])
return (0)
def handleScheduleTimer(self):
self.timers["schedule"] = self.timer_schedule
if (self.isValidStatus(self.status_tel)):
if (self.schedule is None):
try:
self.schedule = Schedule.objects.latest('created')
except ObjectDoesNotExist:
if (settings.DEBUG and DEBUG_FILE):
log.info("No schedule found in database")
return (1)
else:
try:
schedule = Schedule.objects.latest('created')
except ObjectDoesNotExist:
if (settings.DEBUG and DEBUG_FILE):
log.info("No schedule found in database")
return (1)
if (schedule.created != self.schedule.created):
self.next_sequence = None
self.schedule = schedule
if (self.schedule):
shs_list = self.schedule.shs.filter(status=Sequence.PENDING).order_by('tsp')
self.executeSchedule(shs_list)
else:
self.notifyTelescopeStatus("scheduler")
return (0)
def handleNightEndTimer(self):
self.timers["night_end"] = getNextNightEnd()
if (self.isValidStatus(self.status_tel)):
observation_manager.tasks.create_calibrations.delay()
else:
self.notifyTelescopeStatus("night_end")
return (0)
def handleNightStartTimer(self):
self.timers["night_start"] = getNextNightStart()
if (self.isValidStatus(self.status_tel)):
scheduler.tasks.scheduling.delay(first_schedule=False, alert=False)
else:
self.notifyTelescopeStatus("night_start")
return (0)
def notifyTelescopeStatus(self, timer_name):
return (self.notifyDeviceStatus("telescope", timer_name, self.status_tel))
def notifyDeviceStatus(self, device_name, timer_name, status):
Log.objects.create(agent=device_name, created=datetime.datetime.now(),
message="The action : " + str(timer_name) + " has been canceled : Telescope status : " + str(status))
# maybe reset some variables and do a scheduling
return (0)
'''
Function called when a schedule has to be executed
'''
def executeSchedule(self, shs_list):
is_prev_planned = False
self.logDB("Trying to execute a sequence from current schedule")
for shs in shs_list: # shs_list is sorted by tsp
if (shs.sequence.status == Sequence.PLANNED and self.observable(shs.sequence)):
countdown = self.getCountdown(shs)
# if (countdown <= 6):
# TODO CHECK IF OBSERVABLE ELSE RESCHEDULE
if countdown <= JulianSeconds(5):
if self.executing_sequence is None:
if self.switchSequence():
self.executeSequence(shs, shs.sequence, countdown)
else:
self.setNextSequence(shs, shs.sequence, countdown)
elif self.next_sequence is None:
self.setNextSequence(shs, shs.sequence, countdown)
else:
return 0
elif self.next_sequence is None:
self.setNextSequence(shs, shs.sequence, countdown)
else:
if (settings.DEBUG and DEBUG_FILE):
log.info("Sequence cannot be executed : Not observable")
self.logDB("Sequence "+shs.sequence.name+" cannot be executed : Not observable")
return 0
def observable(self, sequence):
if (sequence.jd2 - sequence.duration - secondsToPreciseJulianDate(getPreciseCurrentTime()) <= 0):
return 0
return 1
'''
Launch the observation tasks associated to a sequence
'''
def executeSequence(self, shs, sequence, countdown):
if (countdown > JulianSeconds(5)):
if self.next_sequence and self.next_sequence[1].status == Sequence.PENDING:
self.next_sequence[1].status = Sequence.PLANNED
self.next_sequence[1].save()
return 0
if self.next_sequence and self.next_sequence[1].status == Sequence.PLANNED:
self.next_sequence[1].status = Sequence.PENDING
self.next_sequence[1].save()
self.logDB("Executing sequence")
plans_results = []
if sequence.albums.filter(detector__name="Cagire").exists():
if (self.isValidStatus(self.status_nir)):
for plan in sequence.albums.get(detector__name="Cagire").plans.all():
res = observation_manager.tasks.execute_plan_nir.apply_async((plan.id, float(countdown)))
TaskId.objects.create(task_id=res.id, task="execute_plan")
plans_results.append(res)
else:
self.notifyDeviceStatus("Cagire", "Sequence execution", self.status_nir)
sequence.status = Sequence.DEVICE_ERROR
sequence.save()
return (1)
if sequence.albums.filter(detector__name="Visible camera").exists():
if (self.isValidStatus(self.status_vis)):
for plan in sequence.albums.get(detector__name="Visible camera").plans.all():
res = observation_manager.tasks.execute_plan_vis.apply_async((plan.id, float(countdown)))
TaskId.objects.create(task_id=res.id, task="execute_plan")
plans_results.append(res)
else:
self.notifyDeviceStatus("Camera visible", "Sequence execution", self.status_vis)
sequence.status = Sequence.DEVICE_ERROR
sequence.save()
return (1)
shs.status = Sequence.EXECUTING
sequence.status = Sequence.EXECUTING
shs.save()
sequence.save()
self.executing_sequence = [shs, sequence, plans_results]
return (0)
'''
Set the next sequence
'''
def setNextSequence(self, shs, sequence, countdown):
sequence.status = Sequence.PENDING
self.next_sequence = [shs, sequence, countdown]
sequence.save()
return (0)
'''
Switch sequences
'''
def switchSequence(self):
self.executing_sequence = None
if (self.next_sequence is not None):
self.executeSequence(self.next_sequence[0],
self.next_sequence[1], self.next_sequence[2])
self.next_sequence = None
else:
return 1
return (0)
'''
Check if the current sequence is finished
'''
def handleSequence(self, shs, sequence, executing_plans):
finished = False
error = False
for plan in executing_plans:
try:
if plan.ready() == False:
finished = True
except Exception as e:
error = True
shs.status = Sequence.CANCELLED
sequence.status = Sequence.CANCELLED
shs.save()
sequence.save()
for rev in executing_plans:
if (not rev.failed() and rev.ready() != True):
app.control.revoke(rev.id)
self.switchSequence()
return (-1)
if (finished):
sequence.status = Sequence.EXECUTED
shs.status = Sequence.EXECUTED
sequence.save()
shs.save()
message = "Finished sequence " + str(sequence.pk) + " execution"
Log.objects.create(agent="Majordome", message=message)
self.switchSequence()
return (0)
'''
Function called to do an action with the devices status
'''
def handleStatus(self):
# TODO switch majordome state according to devices status
telescope = Telescope.objects.first()
camera_nir = Detector.objects.get(name="Cagire")
camera_vis = Detector.objects.get(name="Visible camera")
# TODO Dome in database
# dome = ???.objects.get(name="Dome")
# dome.status = self.status_dom
# dome.save()
# TODO adapt the status (must be short)
telescope.status = self.status_tel
camera_nir.status = self.status_nir
camera_vis.status = self.status_vis
# TODO Uncomment when prev todo id done
# telescope.save()
# camera_nir.save()
# camera_vis.save()
self.logDB("Instrument status : dome = " + str(self.status_dom) + ", telescope = " + str(self.status_tel)
+ ", camera_nir = " + str(self.status_nir) + ", camera_vis" + str(self.status_vis))
return (0)
'''
Put the system in Pause
'''
def systemPause(self, duration, cause: str):
self.logDB("System in pause for " + str(duration))
time.sleep(duration)
scheduler.tasks.scheduling.delay(first_schedule=False, alert=False)
self.setTime()
print("system has been paused. Cause : " + cause)
return (0)
'''
Function called to do an action with the site status and the wheather status
'''
def handlePLC(self, site_status, weather_status):
return (0)
'''
Gets the time before the expected start of the execution.
'''
def getCountdown(self, shs):
# TODO start sequence as soon as possible (a lot of verifications must be done there)
current_time = secondsToPreciseJulianDate(getPreciseCurrentTime())
countdown = shs.tsp - current_time
return countdown
'''
Change observation conditions
'''
def changeObsConditions(self):
print("change_obs_conditions")
pass
if (__name__ == "__main__"):
m = Majordome()
m.run()