def delete_grainbin(grainbin):
rrd = RRD(grainbin.device_id, 'grainbin',
service_number=grainbin.bus_number)
rrd.remove()
db_session.query(Grainbin).filter_by(id=grainbin.id).delete()
db_session.commit()
return
def edit_device(id):
device = db_session.query(Device).filter_by(id=id).first()
edit_form = EditDevice(request.form, device, prefix="edit_form")
delete_form = DeleteDevice(request.form, device, prefix="delete_form")
if request.method == 'POST':
if 'edit_form-id' in request.form and edit_form.validate():
device.name = edit_form.name.data
device.location = edit_form.location.data
device.description = edit_form.description.data
if device.user_configured is False:
device.user_configured = True
setup_device(device)
db_session.commit()
flash("Device updated succesfully", 'success')
return redirect(url_for(".show_device", id=id))
elif 'delete_form-id' in request.form and delete_form.validate():
delete_device(device)
flash("Device removed.", 'success')
return redirect(url_for('.device_overview'))
return render_template('device-edit.html',
device=device,
edit_form=edit_form,
delete_form=delete_form)
def inject_details():
g.devices = db_session.query(Device).order_by(Device.creation_time.desc())\
.all()
g.connected_devices = []
g.configured_devices = []
g.new_devices = []
g.grainbin_service = Config.getboolean('services', 'grainbin_service')
if g.grainbin_service:
g.grainbins = []
g.configured_grainbins = []
g.new_grainbins = []
for dev in g.devices:
if dev.connected:
g.connected_devices.append(dev)
if dev.user_configured:
g.configured_devices.append(dev)
else:
g.new_devices.append(dev)
if g.grainbin_service:
if dev.user_configured:
bins = dev.bins
g.grainbins.extend(bins)
for grainbin in bins:
if grainbin.user_configured:
g.configured_grainbins.append(grainbin)
else:
g.new_grainbins.append(grainbin)
return dict()
def edit_grainbin(id):
grainbin = db_session.query(Grainbin).filter_by(id=id).first()
edit_form = EditGrainbin(request.form, grainbin, prefix="edit_form")
delete_form = DeleteGrainbin(request.form, grainbin, prefix="delete_form")
if request.method == 'POST':
if 'edit_form-id' in request.form and edit_form.validate():
grainbin.name = edit_form.name.data
grainbin.location = edit_form.location.data
grainbin.description = edit_form.description.data
if grainbin.user_configured is False:
grainbin.user_configured = True
setup_grainbin(grainbin)
db_session.commit()
flash("Grainbin updated succesfully", 'success')
return redirect(url_for(".show_grainbin", id=id))
elif 'delete_form-id' in request.form and delete_form.validate():
delete_grainbin(grainbin)
flash("Grainbin removed", 'success')
return redirect(url_for('.grainbin_overview'))
return render_template('grainbin-edit.html',
grainbin=grainbin,
edit_form=edit_form,
delete_form=delete_form)
def delete_device(device):
address = Config.get('services', 'client_address')
port = Config.get('services', 'client_port')
address = "tcp://" + address + ":" + port
socket = zmq.Context().socket(zmq.REQ)
socket.setsockopt(zmq.LINGER, 0)
socket.connect(address)
message = ['00000000', 'control', 'remove', device.id]
mdp_request(socket, 'device', message, 1)
rrd = RRD(device.id, 'device')
rrd.remove(remove_folder=True)
db_session.query(Device).filter_by(id=device.id).delete()
db_session.commit()
return
def login():
if request.method == "POST":
attempted_username = request.form["username"]
attempted_password = request.form["password"]
user = db_session.query(User) \
.filter_by(username=attempted_username) \
.first()
print(attempted_username)
print(user)
# check that the supplied user exists
if user:
# check that the supplied password matches
if user.password == attempted_password:
# user is now logged in
if request.form.get("remember"):
session["remember"] = True
current_app.permanent_session_lifetime = timedelta(days=30)
else:
session["remember"] = False
# how long the session will last
current_app.\
permanent_session_lifetime = timedelta(minutes=30)
session["logged_in"] = True
session["username"] = user.username
flash("Last login: %s" % user.last_login, 'success')
if session["remember"]:
expire = user.last_login + timedelta(days=30)
flash("Your session will expire on: %s" % expire,
'info')
user.last_login = datetime.now()
db_session.commit()
return redirect(redirect_url())
# password does not match
else:
flash("Invalid username or password. Please try again")
return render_template("login.html")
# the user does not exist
else:
flash("Invalid username or password. Please try again")
return render_template("login.html")
else:
return render_template("login.html")
def _grainbin_chart():
if request.method == 'POST':
grainbin_id = request.json['id']
date_range = request.json['date']
grainbin = db_session.query(Grainbin).filter_by(id=grainbin_id).first()
names = []
ykeys = []
labels = []
for sensor in grainbin.sensors:
names.append({'name': sensor.id})
ykeys.append(sensor.id)
labels.append(sensor.id)
rrd = RRD(grainbin.device_id, 'grainbin', grainbin.bus_number)
data = rrd.retrieve(names, date_range)
if not data:
return "Error fetching data!"
return jsonify(data=data, ykeys=ykeys, labels=labels)
return "Success!"
def show_device(id):
device = db_session.query(Device).filter_by(id=id).first()
return render_template('device.html', device=device)
def show_grainbin(id):
grainbin = db_session.query(Grainbin).filter_by(id=id).first()
return render_template('grainbin.html', grainbin=grainbin)
