tasks.py
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from __future__ import absolute_import
from celery.task import Task
from django.core.exceptions import ObjectDoesNotExist
from django.db.models import Q
import observation_manager
import observation_manager.tasks
import scheduler
import scheduler.tasks as sched_task
import utils.Logger as L
import monitoring.tasks
import alert_manager.tasks
from common.models import *
from devices.CameraNIR import NIRCameraController
from devices.CameraVIS import VISCameraController
from devices.Dome import DomeController
from devices.PLC import PLCController
from devices.Telescope import TelescopeController
from majordome.MajordomeDecorators import *
from utils.JDManipulator import *
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 = ""
site_status = "OK"
weather_status = "OK"
timers = {}
functions = {}
schedule = None
available_status = []
current_status = "RUNNING"
alarm_list = []
'''
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)
def createTask(self):
try:
TaskId.objects.find(task="majordome").delete()
except Exception as e:
log.info(str(e))
return 1
TaskId.objects.create(task_id=self.request.id, task="majordome")
return 0
def setTasks(self):
try:
self.monitoring_task = TaskId.objects.get(task="monitoring")
self.alert_task = TaskId.objects.get(task="alert_manager")
except Exception as e:
self.monitoring_task = None
self.alert_task = None
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.createTask()
self.updateSoftware()
self.setContext()
self.setTime()
self.setTasks()
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 with the starting configurations.
'''
def waitDevices(self):
while self.status_vis == "" and self.status_tel == "" and self.status_nir == "" and self.status_dom == "":
self.status_vis = self.vis_camera.getStatus()
self.status_nir = self.nir_camera.getStatus()
self.status_tel = self.tel.getStatus()
self.status_dom = self.dom.getStatus()
return (0)
'''
Computes the beginning and the end of the following (or current) night
set the timers -> maybe put timers in a config file ?
'''
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.tasks_timer = 5
self.timer_plc = 2
self.alert_timer = 1
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,
"tasks": self.tasks_timer
}
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,
"tasks": self.handleTasks
}
return (0)
'''
Function called by the main loop to handle the task event (check monitoring and alert_manager)
'''
def handleTasks(self):
self.timers["tasks"] = self.tasks_timer
if self.monitoring_task is None:
try:
self.monitoring_task = TaskId.objects.get(task="monitoring")
except Exception as e:
monitoring.tasks.Monitoring.apply_async()
if settings.DEBUG and DEBUG_FILE:
log.info(str(e))
if self.alert_task is None:
try:
self.alert_task = TaskId.objects.get(task="alert_manager")
except Exception as e:
alert_manager.tasks.AlertListener.apply_async()
if settings.DEBUG and DEBUG_FILE:
log.info(str(e))
return 0
# TODO adapt timers if the majordome is started during the night or not ?
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.current_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)
'''
Function called by the main loop to handle environment event (PLC info)
'''
def handleEnvironmentTimer(self):
self.timers["environment"] = self.timer_plc
self.handlePLC()
return (0)
'''
Function called by the main loop to handle the devices status
'''
def handleStatusTimer(self):
self.timers["status"] = self.timer_status
self.status_tel = self.tel.getStatus()
self.status_nir = self.nir_camera.getStatus()
self.status_vis = self.vis_camera.getStatus()
self.status_dom = self.dom.getStatus()
self.handleStatus()
return 0
'''
Function called by the main loop to check if the executing sequence is finished
'''
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)
'''
Function called by the main loop to check if there is a new schedule and to execute its sequences
'''
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
self.firstSequenceIsAlert()
if (self.schedule):
shs_list = self.schedule.shs.filter(Q(status=Sequence.PLANNED) |
Q(status=Sequence.PENDING)).order_by('tsp')
self.executeSchedule(shs_list)
else:
self.notifyTelescopeStatus("scheduler")
return (0)
'''
Function called by handleScheduleTimer, the purpose is to kill the executing sequence if the
first sequence in the new planning is from an alert
'''
@executingSequenceExist
def firstSequenceIsAlert(self):
shs_list = self.schedule.shs.filter(Q(status=Sequence.PLANNED) |
Q(status=Sequence.PENDING)).order_by('tsp')
if shs_list and shs_list[0].sequence.is_alert:
if shs_list[0].sequence.created.date() >= (datetime.datetime.now() - datetime.timedelta(seconds=10)).date():
self.killExecutingSequence()
return 1
return 0
'''
Function called by the main loop to handle the end of a night
'''
def handleNightEndTimer(self):
self.timers["night_end"] = getNightEnd()
if (self.isValidStatus(self.status_tel)):
observation_manager.tasks.night_calibrations.apply_async()
else:
self.notifyTelescopeStatus("night_end")
return (0)
'''
Function called by the main llop to handle the beginning of a night
'''
def handleNightStartTimer(self):
self.timers["night_start"] = getNextNightStart()
if self.isOutsideOk():
self.dom.open()
self.vis_camera.open_shutter()
self.nir_camera.open_shutter()
scheduler.tasks.scheduling.apply_async((False, False))
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))
# TODO MAYBE reset some variables and do a scheduling
return (0)
'''
Execute a schedule
'''
def executeSchedule(self, shs_list):
for shs in shs_list: # shs_list is sorted by tsp
if (self.executableSequence(shs.sequence.status) and self.observable(shs.sequence)):
if self.next_sequence is None:
self.setNextSequence(shs, shs.sequence)
if self.isExecutable() and self.executing_sequence is None:
if self.isValidTimer(self.next_sequence[0]):
if self.executeSequence(self.next_sequence[0], self.next_sequence[1]) == -1:
return -1
if self.next_sequence[0] != shs and self.next_sequence[1] != shs.sequence:
self.setNextSequence(shs, shs.sequence)
else:
self.next_sequence = None
else:
return 0
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
def executableSequence(self, status):
if status == Sequence.PLANNED or status == Sequence.PENDING:
return 1
return 0
'''
Kill the executing sequence and set its state to cancelled
'''
@executingSequenceExist
def killExecutingSequence(self):
shs = self.executing_sequence[0]
sequence = self.executing_sequence[1]
executing_plans = self.executing_sequence[2]
shs.status = Sequence.CANCELLED
sequence.status = Sequence.CANCELLED
shs.save()
sequence.save()
for rev in executing_plans:
if (not rev.failed() and not rev.successful()):
rev.revoke(terminate=True)
self.executing_sequence = None
return 0
def reset(self, type):
if type == "WEATHER":
self.dom.open()
scheduler.tasks.scheduling.delay((False, False))
elif type == "INSIDE":
scheduler.tasks.scheduling.delay((False, False))
'''
Handle a new alarm (called by isInsideOk or isWeatherOk)
'''
@SameAlarmCheck
def handleAlarm(self, type, pos=-1):
if type == "WEATHER":
#TODO send email
self.dom.close()
self.killExecutingSequence()
self.vis_camera.park()
self.nir_camera.park()
elif type == "INSIDE":
#TODO send email
self.killExecutingSequence()
self.vis_camera.park()
self.nir_camera.park()
elif type == "ENDED":
if len(self.alarm_list) > 0 and pos != -1:
ended = self.alarm_list[pos]
del self.alarm_list[pos]
self.reset(ended)
return 0
else:
return 1
self.alarm_list.append(type)
return 0
'''
for now weather_status and site_status contains something different than OK if the status is critical
Later we may have other states to handle
'''
def isOutsideOk(self) -> bool:
self.handlePLC()
if self.weather_status == "OK":
if "WEATHER" in self.alarm_list:
self.handleAlarm("ENDED", self.alarm_list.index("WEATHER"))
return True
self.handleAlarm("WEATHER")
return False
'''
Check the telescope inside status
'''
def isInsideOk(self) -> bool:
self.handlePLC()
if self.site_status == "OK":
if "INSIDE" in self.alarm_list:
self.handleAlarm("ENDED", self.alarm_list.index("INSIDE"))
return True
self.handleAlarm("INSIDE")
return False
def isDevicesOk(self) -> bool:
if self.isValidStatus(self.status_tel) and self.isValidStatus(self.status_dom)\
and self.isValidStatus(self.status_vis) and self.isValidStatus(self.status_nir):
return True
return False
def isExecutable(self) -> bool:
if self.isValidStatus(self.status_tel) and self.isValidStatus(self.status_dom)\
and self.isOutsideOk() and self.isInsideOk():
return True
return False
'''
check if the sequence timer is valid for execution, also check if there is a scheduling task running
'''
def isValidTimer(self, shs) -> bool:
current_countdown = self.getCountdown(shs)
if (current_countdown <= JulianSeconds(5)):
try:
task = TaskId.objects.filter(task="scheduling")
if not task:
return True
return False
except:
return True
return False
'''
Launch the observation tasks NIR and VIS associated to a sequence
'''
def executeSequence(self, shs, sequence):
shs.status = Sequence.EXECUTING
sequence.status = Sequence.EXECUTING
shs.save()
sequence.save()
log.info("Executing sequence id = " + str(sequence.pk))
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(self.getCountdown(shs))))
# JB TODO : is it still usefull ?
# 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.CANCELLED
shs.status = Sequence.CANCELLED
shs.save()
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(self.getCountdown(shs))))
plans_results.append(res)
else:
self.notifyDeviceStatus("Camera visible", "Sequence execution", self.status_vis)
sequence.status = Sequence.CANCELLED
shs.status = Sequence.CANCELLED
shs.save()
sequence.save()
return (1)
self.executing_sequence = [shs, sequence, plans_results]
return (0)
'''
Set the next sequence
'''
def setNextSequence(self, shs, sequence):
sequence.status = Sequence.PENDING
shs.status = Sequence.PENDING
self.next_sequence = [shs, sequence]
sequence.save()
shs.save()
return (0)
'''
Check if the current sequence is finished
'''
def handleSequence(self, shs, sequence, executing_plans):
count = 0
for res in executing_plans:
try:
if res.successful() or res.failed():
count += 1
except Exception as e:
if DEBUG_FILE and settings.DEBUG:
log.info(str(e))
shs.status = Sequence.CANCELLED
sequence.status = Sequence.CANCELLED
shs.save()
sequence.save()
for rev in executing_plans:
if (not rev.failed() and not rev.successful()):
rev.revoke(terminate=True)
self.executing_sequence = None
return (-1)
if count >= len(executing_plans):
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.executing_sequence = None
return (0)
'''
Function called to do an action with the devices status
'''
def handleStatus(self):
telescope = Telescope.objects.first()
camera_nir = Detector.objects.get(name="Cagire")
camera_vis = Detector.objects.get(name="Visible camera")
dome = Dome.objects.get(name="Dome")
dome.status = self.status_dom
telescope.status = self.status_tel
camera_nir.status = self.status_nir
camera_vis.status = self.status_vis
dome.save()
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 majordome in pause
'''
def systemPause(self, duration, cause: str):
self.logDB("System in pause for " + str(duration))
time.sleep(duration)
scheduler.tasks.scheduling.apply_async(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):
try:
site_status = SiteWatch.objects.latest('updated')
weather_status = WeatherWatch.objects.latest('updated')
self.weather_status = weather_status.global_status
self.site_status = site_status.global_status
except ObjectDoesNotExist as e:
if (settings.DEBUG and DEBUG_FILE):
log.info("No site_status or weather_status found in database : " + str(e))
# TODO shutdown everything
return 1
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