def update_subscribers():
""" Updates all Subscribers of active GrowSessions
Returns:
"""
for active_grow_session in GrowSession.get_active():
subscribers = active_grow_session.subscribers
if len(subscribers) == 0:
continue
newest_data_point = appbuilder.session.query(FlowerData) \
.filter(FlowerData.grow_session_id == active_grow_session.id) \
.order_by(FlowerData.timestamp.desc()).first()
if newest_data_point is None: # If no data in GrowSession just skip.
continue
data = newest_data_point.get_data_dict()
for subscriber in subscribers:
receiver = subscriber.receiver_email
subject = "Flower Data " \
+ newest_data_point.grow_session.name \
+ " " + data['TimeStamp'] + " Water: " \
+ data['Water']
body = ""
for attribute in data:
body += attribute + " " + data[attribute] + "\n"
hub.send_email(receiver, subject, body)
new_event("Send email to " + subscriber.name)
def meassure():
""" Measures the FlowerDevices of all active GrowSessions. Waters if their
water is under the WaterDevice threshhol.
Returns:
"""
if app.config['HARDWARE']:
from app.hardware import flower_power
result = []
for grow_session in GrowSession.get_active():
result += grow_session.flower_devices
if len(result) == 0:
print("Nothing to meassure")
return
for flower_device in result:
if app.config['HARDWARE']:
data = flower_power.get_flower_data(flower_device.mac)
else: # Mock data for development and testing.
data = dict(Temperature=10.23, Light=100, Water=50.0, Battery=90, Ecb=0.5,
EcPorus=0.6, DLI=0.7, Ea=0.8, )
flower_data = FlowerData.new_flower_data(data, flower_device.id, flower_device.grow_session.id)
db.session.add(flower_data)
db.session.commit()
hub.new_data_point(flower_data)
new_event("Meassure Flower_device " + flower_device.mac)
# Check if we have to water.
for water_device in flower_device.grow_session.water_devices:
if data['Water'] < water_device.water_threshhold: # Have to water.
start_water(water_device.id)
logging.getLogger().warning("Meassure completed")
def switch_off(self, light_devices):
from app.tasks import switch_light_off
if isinstance(light_devices, list):
light_devices = light_devices
else:
light_devices = [light_devices]
self.update_redirect()
for light_device in light_devices:
new_event("Switch Light Action " + light_device.name + " off")
switch_light_off(light_device.id)
return redirect(self.get_redirect())
def webcam():
if app.config["WEBCAM"]:
from app.hardware import webcam as webcam_module
for webcam_item in Webcam.get_active():
if webcam_item.grow_session.is_day():
filename = webcam_module.webcam_make_screenshot()
# Upload screenshot
hub.new_webcam_screenshot(filename)
new_event("Made screenshot " + webcam_item.name)
# Save screenshot in DB.
image = Image.open(filename)
db.session.add(WebcamScreenshot.new_webcam_screenshot(image, webcam_item))
db.session.commit()
def time_lapse():
if app.config["WEBCAM"]:
from app.hardware import webcam as webcam_module
for webcam_item in Webcam.get_active():
screenshots = db.session.query(WebcamScreenshot).order_by(WebcamScreenshot.timestamp).all()
images = []
for screenshot in screenshots:
image = Image.frombytes('RGB', screenshot.get_size(), buffer(screenshot.file))
images.append(image)
time_lapse_filename = 'time_lapse.gif'
writeGif(time_lapse_filename, images, duration=0.2)
hub.new_webcam_gif(time_lapse_filename)
new_event("Made Time Lapse")
def stop_water(water_id):
""" Stops the WaterDevice.
Args:
water_id (str): The id of the WaterDevice.
Returns:
"""
water_device = appbuilder.session.query(WaterDevice).filter(WaterDevice.id == water_id).first()
switch_water_to(water_device, False)
water_device.switch_off_time = None
db.session.commit()
new_event("Switch Water " + water_device.name + " to False")
def switch(self, water_devices):
from app.tasks import scheduler, switch_water
if isinstance(water_devices, list):
water_devices = water_devices
else:
water_devices = [water_devices]
self.update_redirect()
for water_device in water_devices:
job = scheduler.get_job('water_off_' + water_device.name)
if job:
job.remove()
new_event("Switch Water Action " + water_device.name)
switch_water(water_device.id)
return redirect(self.get_redirect())
def start(self, grow_sessions):
if isinstance(grow_sessions, list):
grow_session = grow_sessions[0]
else:
grow_session = grow_sessions
grow_session.start_date = datetime.now()
new_event("GrowSession started " + grow_session.name)
self.update_redirect()
from tasks import start_light_tasks
for light_device in grow_session.light_devices:
start_light_tasks(light_device)
return redirect(self.get_redirect())
def start_water(water_id):
""" Starts the WaterDevice with water_id and starts the task to turn
it off.
Args:
water_id (str): The id of the WaterDevice.
Returns:
"""
water_device = appbuilder.session.query(WaterDevice).filter(WaterDevice.id == water_id).first()
switch_water_to(water_device, True)
water_device.switch_off_time = datetime.now() + timedelta(minutes=water_device.watering_duration_minutes)
db.session.commit()
scheduler.add_job(stop_water, 'date', run_date=water_device.switch_off_time, args=[water_device.id],
misfire_grace_time=10000000, id='water_off_' + water_device.name)
new_event("Switch Water " + water_device.name + " to True")
