class SimulatorSource(PointSource):
def __init__(self, entity_id, measurements):
self._entity_id = entity_id
self._measurements = measurements
def __enter__(self):
self._session = Session()
self._entity = get_one(self._session, Entity, id=self._entity_id)
self._entity_measurement_names = {}
for measurement_id in self._measurements:
if measurement_id not in self._entity_measurement_names:
measurement_name = get_one(self._session, SeriesAttribute, id=measurement_id).name
self._entity_measurement_names[measurement_id] = measurement_name
return self
def __exit__(self, *args):
self._entity = None
self._entity_measurement_names = {}
self._session.close()
def get_values(self) -> Iterable[dict]:
result = []
for measurement_id in self._measurements:
series_measurements = self._measurements[measurement_id]
for (point_ts, point_val) in series_measurements:
result.append({
'timestamp': convert_timestamp(create_data_timestamp(point_ts)),
'measurements': [(self._entity_measurement_names[measurement_id], float(point_val))]
})
return result
def get_entity(self) -> Entity:
return self._entity
def add_wifi_network(wifi_name, wifi_password, interface=None):
session = Session()
if interface is None:
interfaces = session.query(InterfaceDefinition).all()
for x in interfaces:
if x.interface != 'eth0':
if x.state == 'dhcp':
interface = x.interface
if interface is None:
logger.error("No interface available to add new wifi network")
return None
# have an interface. now create a WifiDefinition entry
new_wifi = WifiDefinition()
new_wifi.wifi_name = wifi_name
new_wifi.wifi_password = wifi_password
new_wifi.wifi_mode = 'dhcp'
new_wifi.interface = interface
session.add(new_wifi)
session.commit()
session.close()
return new_wifi
def set_wpa_mode():
logger.debug("setting all wlan into wpa mode")
session = Session()
# get the info for the wpa_supplicant file
wifi_defs = session.query(WifiDefinition).filter(WifiDefinition.wifi_mode != 'ap').all()
networks = []
for wifi in wifi_defs:
new_network = {}
new_network['ssid'] = wifi.wifi_name
new_network['password'] = wifi.wifi_password
networks.append(new_network)
iptables_file(None, None, flush_only=True)
interface_file()
wpa_supplicant_file(networks)
dhcpcd_file()
install_root = session.query(RoutingDefiniton.route).filter_by(name='install_root').scalar()
session.close()
path = install_root + 'farm_device/network/wpa_script.sh'
command = ['sudo', 'sh', path]
subprocess.check_call(command)
return
def create(self):
self.timestamp = time()
session = Session()
device = session.query(Device).first()
self.id = device.id
self.software_version = device.software_version
self.interior_temp = temperature(device.interior_sensor)
self.exterior_temp = temperature(device.exterior_sensor)
self.device_temp = getCPUtemperature()
self.uptime = get_uptime_seconds()
self.current_time = datetime.datetime.now()
self.load_avg = os.getloadavg()
storage = get_storage()
self.disk_total = storage['disk_total']
self.disk_used = storage['disk_used']
self.disk_free = storage['disk_free']
session.close()
return
def set_software_info(software_version, device_service=None, grainbin_service=None):
"""
Set the software version info into the SoftwareDefinition table.
software_version is a string representing what revison of software
device_service is a Boolean indicating if the device service is enabled
grainbin_service is a Boolean indicating if the grainbin service is enabled
"""
logger.debug("setting version: {0} device: {1} grainbin {2}".format(software_version,
device_service,
grainbin_service))
session = Session()
try:
sd = session.query(SoftwareDefinition).one()
sd.software_version = software_version
if device_service is not None:
sd.device_service = device_service
if grainbin_service is not None:
sd.grainbin_service = grainbin_service
except NoResultFound:
sd = SoftwareDefinition()
sd.software_version = software_version
if device_service is not None:
sd.device_service = device_service
if grainbin_service is not None:
sd.grainbin_service = grainbin_service
session.add(sd)
session.commit()
session.close()
return
def on_create(self, did, msg):
imported_device = pickle.loads(msg[0])
device = Device(imported_device['id'],
version=imported_device['version'])
device.connected = True
device.user_configured = False
device.database_service = imported_device['database_service']
device.device_service = imported_device['device_service']
device.grainbin_service = imported_device['grainbin_service']
device.grainbin_count = imported_device['grainbin_count']
session = Session()
session.add(device)
if device.grainbin_service:
grainbins = []
for x in range(device.grainbin_count):
id = device.id + '.' + str(x).zfill(2)
grainbin = Grainbin(id, device.id, x)
grainbins.append(grainbin)
session.add_all(grainbins)
session.commit()
session.close()
return "added"
def subscriber_manager(context):
global subscriber
global publisher
global subscriber_topics
session = Session()
# Set up forwarder device
logger.debug("Configuring forwarder device")
forwarder_subscriber_address = session.query(RoutingDefiniton.route) \
.filter_by(name="internal_pub") \
.scalar()
forwarder_publisher_address = session.query(RoutingDefiniton.route) \
.filter_by(name="internal_sub") \
.scalar()
forwarder = ProcessDevice(zmq.FORWARDER, zmq.SUB, zmq.PUB)
forwarder.connect_in(forwarder_subscriber_address)
forwarder.setsockopt_in(zmq.SUBSCRIBE, "")
logger.debug("forwarder connect in: {0}".format(forwarder_subscriber_address))
forwarder.bind_out(forwarder_publisher_address)
logger.debug("forwarder bind out: {0}".format(forwarder_publisher_address))
# Set up subscriber listening to Farm-Monitor server
subscriber_address = session.query(RoutingDefiniton.route)\
.filter_by(name="subscriber_address").scalar()
subscriber_port = session.query(RoutingDefiniton.route)\
.filter_by(name="subscriber_port").scalar()
subscriber_address = "tcp://" + subscriber_address + ":" + subscriber_port
device_id = session.query(HardwareDefinition.serial_number).scalar()
subscriber_topics.append(device_id)
subscriber = Subscriber(context, subscriber_address, subscriber_topics)
subscriber.subscriber.on_recv(callback=server_subscriber_recv)
logger.debug("Subscriber listening to: {0} topics: {1}".format(subscriber_address,
subscriber_topics))
# Set up publisher to forward messages from Farm-Monitor to internal
publisher_address = session.query(RoutingDefiniton.route)\
.filter_by(name="internal_pub").scalar()
publisher = Publisher(context, publisher_address)
logger.debug("Publisher configured to: {0}".format(publisher_address))
session.close()
try:
logger.info("starting forwarder, Subscriber, and Publisher")
# Start the forwarder
forwarder.start()
IOLoop.instance().start()
except KeyboardInterrupt:
logger.info("stopping forwarder, Subscriber, and Publisher")
IOLoop.instance().stop()
subscriber.shutdown()
publisher.shutdown()
return
def backup(self):
backup_index = create_backup()
session = Session()
backup = session.query(Backup).filter_by(index=backup_index).first()
standalone_configuration = session.query(SystemSetup.standalone_configuration).scalar()
if self.device_state == 'connected':
failed_attempts = 0
# don't send the file if we are a combined configuration
if standalone_configuration:
logger.info("Sending device backup file to FarmMonitor")
file_size = os.path.getsize(backup.filepath)
bytes_sent = 0
zip_file = open(backup.filepath, 'r')
while bytes_sent < file_size and failed_attempts < 3:
zip_file.seek(bytes_sent)
data = zip_file.read(512)
logger.debug("Sending {0} bytes of backup file".format(len(data)))
message = FileMessage(self.device_id, 'farm_monitor', 'backup')
message.set_file(backup.filepath, data)
reply = self.send([pickle.dumps(message)])
if reply:
# only mark the data received if a reply is recieved
bytes_sent += len(data)
failed_attempts = 0
reply_message = pickle.loads(reply[1])
logger.debug("Update reply: {0}".format(reply_message.reply))
else:
logger.warn("Failed attempt in sending backup file")
failed_attempts += 1
zip_file.close()
# only send the database object if the file was sent correctly
if failed_attempts == 0:
logger.info("Sending device backup database object to FarmMonitor")
message = FileMessage(self.device_id, 'farm_monitor', 'backup')
message.set_db_object(pickle.dumps(backup))
reply = self.send([pickle.dumps(message)])
if reply:
reply_message = pickle.loads(reply[1])
logger.debug("Update response: {0}".format(reply_message.reply))
else:
logger.warn("To many failed attempts. Backup failed to send to Farm Monitor")
session.close()
return
def create(self):
session = Session()
grainbins = session.query(Grainbin).all()
for grainbin in grainbins:
self.grainbins.append(GrainbinModel(grainbin, read_temperature=False))
session.close()
return
def delete_wifi_network(id):
session = Session()
session.query(WifiDefinition).filter_by(id=id).delete()
session.commit()
session.close()
return
def set_ap_mode():
logger.debug("setting wifi into ap mode")
session = Session()
# get the wlan0 and wlan1 dhcp states
try:
ap_interface = session.query(InterfaceDefinition).filter_by(state='ap').first()
ap_ssid = ap_interface.credentials[0].wifi_name
ap_password = ap_interface.credentials[0].wifi_password
except NoResultFound:
# error. abort
logger.warn("No interface with state set to 'ap'. Aborting")
return
# get info for interface file
if ap_interface.interface == 'wlan0':
wlan0_dhcp = False
wlan1_dhcp = True
else:
wlan0_dhcp = True
wlan1_dhcp = False
# get the info for the wpa_supplicant file
wifi_defs = session.query(WifiDefinition).filter(WifiDefinition.wifi_mode != 'ap').all()
networks = []
for wifi in wifi_defs:
new_network = {}
new_network['ssid'] = wifi.wifi_name
new_network['password'] = wifi.wifi_password
networks.append(new_network)
# get the information for the iptables_file
internal_interface = ap_interface.interface
external_interface = get_external_interface()
iptables_file(external_interface, internal_interface)
interface_file(wlan0_dhcp=wlan0_dhcp, wlan1_dhcp=wlan1_dhcp)
wpa_supplicant_file(networks)
dhcpcd_file(interface=ap_interface.interface)
dnsmasq_file(interface=ap_interface.interface)
hostapd_file(ap_interface.interface, ap_ssid, ap_password)
install_root = session.query(RoutingDefiniton.route).filter_by(name='install_root').scalar()
session.close()
path = install_root + 'farm_device/network/ap_script.sh'
command = ['sudo', 'sh', path, ap_interface.interface]
subprocess.check_call(command)
return
def set_sensor_info(interior):
"""
there should be two 1W sensors connected directly to the device.
This gets the sensors and sets which one is interior and exterior
into the HardwareDefinition table.
interior should be '1' or '2' and specifies which of the two sensors
is the interior one.
"""
logger.debug("setting sensor info for device")
interior = int(interior)
# get the 1W sensors that are connected directly to the device
# theses are the interior and exterior temp sensors
sensors = get_connected_sensors()
int_sensor = "no_sensor_selected"
ext_sensor = "no_sensor_selected"
# there should be two sensors
if len(sensors) == 2:
if interior == 1:
int_sensor = sensors[0]
ext_sensor = sensors[1]
elif interior == 2:
int_sensor = sensors[1]
ext_sensor = sensors[0]
elif len(sensors) == 1:
if interior == 1:
int_sensor = sensors[0]
ext_sensor = "no_sensor_detected"
elif interior == 2:
int_sensor = "no_sensor_detected"
ext_sensor = sensors[0]
logger.debug("interior sensor is: {0}".format(int_sensor))
logger.debug("exterior sensor is: {0}".format(ext_sensor))
# now set the sensor info into the tables
session = Session()
try:
hd = session.query(HardwareDefinition).one()
hd.interior_sensor = int_sensor
hd.exterior_sensor = ext_sensor
except NoResultFound:
hd = HardwareDefinition()
hd.interior_sensor = int_sensor
hd.exterior_sensor = ext_sensor
session.add(hd)
session.commit()
session.close()
return
def delete_release(repo, name):
session = Session()
release = session.query(Update).filter_by(repo=repo, name=name).first()
if release:
if os.path.isdir(release.filepath):
shutil.rmtree(release.filepath)
session.delete(release)
session.commit()
session.close()
return
def check_all_alerts(
on_state_change: Iterable[Callable[[Alert, str], Any]]) -> None:
session = Session()
for alert in get_all(session, Alert, is_enabled=True):
status = check_alert(alert)
if status and not alert.last_check_status:
[callback(alert, str(status)) for callback in on_state_change
] # call all callbacks in on_state_change
alert.last_check_status = True
if alert.last_check_status is None or (not status
and alert.last_check_status):
[callback(alert, str(status)) for callback in on_state_change]
alert.last_check_status = False
session.commit()
session.close()
def post_update(update_id):
session = Session()
# update the software info
update = session.query(Update).filter_by(id=update_id).one()
device = session.query(Device).one()
device.software_version = update.name
delete_release(update.repo, update.name)
session.commit()
session.close()
return
def __init__(self, context):
socket = context.socket(zmq.ROUTER)
socket.setsockopt(zmq.LINGER, 0)
identity = 'router'
socket.identity = identity.encode('ascii')
session = Session()
router_internal = session.query(RoutingDefiniton.route) \
.filter_by(name="internal_router") \
.scalar()
session.close()
socket.bind(router_internal)
ioloop = IOLoop.instance()
self.internal_router = ZMQStream(socket, ioloop)
self.internal_router.on_recv(callback=self.router_recv)
return
def __init__(self, context, identity):
self.socket = context.socket(zmq.DEALER)
self.socket.identity = identity.encode('ascii')
self.socket.setsockopt(zmq.LINGER, 0)
session = Session()
dealer_internal = session.query(RoutingDefiniton.route) \
.filter_by(name="internal_dealer") \
.scalar()
session.close()
self.socket.connect(dealer_internal)
self.poll = zmq.Poller()
self.poll.register(self.socket, zmq.POLLIN)
return
def create(self):
session = Session()
device = session.query(Device).first()
self.id = device.id
self.hardware_version = device.hardware_version
self.software_version = device.software_version
self.database_service = device.database_service
self.device_service = device.device_service
self.grainbin_service = device.grainbin_service
if device.grainbin_service:
self.grainbin_count = device.grainbin_count
self.grainbin_data = GrainbinInfo(self.source, self.destination)
self.grainbin_data.create()
session.close()
return
def on_heartbeat(self, did):
if did in self._connected_devices:
if self._connected_devices[did].is_alive():
self._connected_devices[did].on_message_received()
return self._connected_devices[did].get_state()
else:
session = Session()
device = session.query(Device).filter_by(id=did).first()
if not device:
session.close()
# signals the device to send a create message
return 'unknown'
else:
self._connected_devices[did] = DeviceRep(did,
state='connected')
device.connected = True
session.commit()
return 'connected'
return
def device_service(context):
global connection
global subscriber
global internal_router
session = Session()
client_address = session.query(RoutingDefiniton.route)\
.filter_by(name="client_address").scalar()
client_port = session.query(RoutingDefiniton.route)\
.filter_by(name="client_port").scalar()
client_address = "tcp://" + client_address + ":" + client_port
device_id = session.query(HardwareDefinition.serial_number).scalar()
subscriber_address = session.query(RoutingDefiniton.route)\
.filter_by(name="internal_sub").scalar()
session.close()
subscriber_topics = ["device"]
connection = DeviceConnection(context, device_id, client_address)
logger.debug("DeviceConnection connecting to: {0}".format(client_address))
logger.debug("DeviceConnection device id is: {0}".format(device_id))
subscriber = DeviceSubscriber(context,
subscriber_address,
subscriber_topics)
logger.debug("DeviceSubscriber subscribing to: {0}".format(subscriber_address))
logger.debug("DeviceSubscriber topics: {0}".format(subscriber_topics))
internal_router = DeviceRouter(context)
try:
logger.info("starting DeviceConnection, DeviceSubscriber, and DeviceRouter")
IOLoop.instance().start()
except KeyboardInterrupt:
logger.info("stoping DeviceConnection, DeviceSubscriber, and DeviceRouter")
IOLoop.instance().stop()
internal_router.shutdown()
subscriber.shutdown()
connection.shutdown()
return
def push_new_measurements(directory, pattern):
session = Session()
files = os.listdir(directory)
for node in get_all(session, Entity):
to_read = [
directory + '/' + f for f in files
if re.match(pattern.format(ID=node.id), f) and
os.path.getmtime(directory + '/' + f) >= node.last_data_fetch_ts
]
# get input files sorted by modification time
for file in sorted(to_read, key=os.path.getmtime):
try:
InfluxWriter().write(
PointGenerator(node, FileParser(node.id,
file)).generate_points())
node.last_data_fetch_ts = int(os.path.getmtime(file))
session.commit()
except Exception as err:
logging.error(err)
session.close()
def grainbin_service(context):
global service
global subscriber
global internal_dealer
session = Session()
client_address = session.query(RoutingDefiniton.route)\
.filter_by(name="client_address").scalar()
client_port = session.query(RoutingDefiniton.route)\
.filter_by(name="client_port").scalar()
client_address = "tcp://" + client_address + ":" + client_port
device_id = session.query(HardwareDefinition.serial_number).scalar()
subscriber_address = session.query(RoutingDefiniton.route)\
.filter_by(name="internal_sub").scalar()
session.close()
subscriber_topics = ["grainbin"]
service = GrainBinService(context, device_id, client_address)
logger.debug("GrainbinService connecting to: {0}".format(client_address))
subscriber = GrainBinSubscriber(context,
subscriber_address,
subscriber_topics)
logger.debug("GrainbinSubscriber subscribing to: {0}".format(subscriber_address))
logger.debug("GrainbinSubscriber topics: {0}".format(subscriber_topics))
internal_dealer = GrainBinDealer(context, 'grainbin')
logger.debug("GrainbinDealer has id 'grainbin'")
try:
logger.info("starting GrainbinService, GrainbinSubscriber, and GrainbinDealer")
IOLoop.instance().start()
except KeyboardInterrupt:
logger.info("stopping GrainbinService, GrainbinSubscriber, and GrainbinDealer")
IOLoop.instance().stop()
internal_dealer.shutdown()
subscriber.shutdown()
service.shutdown()
return
def on_update(self, did, msg):
session = Session()
device = session.query(Device).filter_by(id=did).first()
if device:
if device.user_configured:
update = pickle.loads(msg[0])
device.interior_temp = update['interior_temp']
device.exterior_temp = update['exterior_temp']
session.commit()
session.close()
values = {'interior_temp': update['interior_temp'],
'exterior_temp': update['exterior_temp']}
rrd = RRD(did, 'device')
print(values)
print(update['timestamp'])
rrd.update(values, timestamp=update['timestamp'])
return "updated"
else:
session.close()
return 'device_unconfigured'
else:
session.close()
return 'no_device'
return
def get_external_interface():
session = Session()
if ethernet_connected():
ethernet = session.query(InterfaceDefinition).filter_by(interface='eth0').first()
ethernet.is_external = True
session.commit()
session.close()
return 'eth0'
# now check if it is either wlan0 or wlan1
interfaces = session.query(InterfaceDefinition).filter_by(state='dhcp').all()
for interface in interfaces:
if interface.interface != 'eth0':
interface.is_external = True
session.commit()
session.close()
return interface.interface
return "None"
def preform_update(update_id, update_type):
session = Session()
try:
update = session.query(Update).filter_by(id=update_id).one()
except NoResultFound:
session.close()
return
if update_type == 'farm_device':
# now stage and preform the update
file_path = update.filepath + update.filename
updater_path = session.query(RoutingDefiniton.route).filter_by(name='updater_path').scalar()
# launch the updater script in a seperate process. The bash file just calls another
# python script in a detached process
Popen(['sh', updater_path, str(update_id), file_path, "farm_device", "farm_device"],
preexec_fn=os.setpgrp)
session.close()
return
def refresh_interfaces():
session = Session()
ap_present = False
interfaces = get_interfaces()
# update all interfaces to be False by default
session.query(InterfaceDefinition).update({InterfaceDefinition.is_active: False})
session.commit()
for my_interface in interfaces:
try:
interface = session.query(InterfaceDefinition).filter_by(interface=my_interface).one()
interface.is_active = True
# see if there is an interface that is configured for an ap
if interface.state == 'ap':
ap_present = True
# must be a new interface so lets add it
except NoResultFound:
new_interface = InterfaceDefinition(my_interface)
new_interface.is_active = True
new_interface.is_for_fm = False
new_interface.state = 'dhcp'
session.add(new_interface)
session.commit()
session.close()
if ap_present:
set_ap_mode()
else:
set_wpa_mode()
return
def create(self, bus_number="ALL"):
self.timestamp = time()
session = Session()
if bus_number == "ALL":
grainbins = session.query(Grainbin).all()
for grainbin in grainbins:
grainbin_data = GrainbinModel(grainbin, read_temperature=True)
self.grainbins.append(grainbin_data)
grainbin.average_temp = grainbin_data.average_temp
else:
grainbin = session.query(Grainbin).filter_by(bus_number=bus_number).first()
if grainbin:
grainbin_data = GrainbinModel(grainbin, read_temperature=True)
self.grainbins.append(grainbin_data)
grainbin.average_temp = grainbin_data.average_temp
session.commit()
session.close()
return
def set_hardware_info(hardware_version, gb_reader_count):
"""
Set the hardware info into the HardwareDefinition table.
hardware_version is a string representing what revison of hardware
wifi_chip is the chip of the wifi adapter
gb_reader_count is the number of 1Wire readerchips the FarmDevice has
"""
logger.debug("setting vers: {0} grainbin_reader: {1}".format(hardware_version,
gb_reader_count))
session = Session()
device_name = get_device_name()
serial_number = getserial()
try:
hd = session.query(HardwareDefinition).one()
hd.hardware_version = hardware_version
hd. wifi_chip = None
hd.device_name = device_name
hd.serial_number = serial_number
hd.grainbin_reader_count = int(gb_reader_count)
except NoResultFound:
hd = HardwareDefinition()
hd.hardware_version = hardware_version
hd.wifi_chip = None
hd.device_name = device_name
hd.serial_number = serial_number
hd.grainbin_reader_count = int(gb_reader_count)
session.add(hd)
session.commit()
session.close()
return
def on_update(self, did, msg):
session = Session()
device = session.query(Device).filter_by(id=did).first()
if device:
if device.user_configured:
update = pickle.loads(msg[0])
process_grainbin_update(session, update)
else:
session.close()
return 'device unconfigured'
else:
session.close()
return 'no device'
session.close()
return 'updated'
def perform_update(self, update_id):
session = Session()
standalone_configuration = session.query(SystemSetup.standalone_configuration).scalar()
if self.device_state == 'connected':
# request the update db_object
logger.info("Requesting update with id: {0} from FarmMonitor".format(update_id))
message = [self.device_id, 'perform_update', 'db_object', update_id]
message = FileMessage(self.device_id, 'farm_monitor', 'perform_update')
message.set_db_object(update_id)
reply = self.send([pickle.dumps(message)])
if reply:
reply_message = pickle.loads(reply[1])
logger.debug("Update response from farm_monitor")
if reply_message.data:
update = pickle.loads(reply_message.data)
else:
logger.warn("incorrect response in perform_update: {0}".format(reply[0]))
session.close()
return
failed_attempts = 0
# don't request the file if we are a combined configuration
if standalone_configuration:
if not os.path.exists(update.filepath):
os.makedirs(update.filepath)
bytes_received = 0
more_to_send = True
new_file = open(update.filepath + update.filename, 'a')
while more_to_send and failed_attempts < 3:
logger.info("Requesting update file from FarmMonitor")
message = FileMessage(self.device_id, 'farm_monitor', 'perform_update')
message.request_file(update_id, str(bytes_received))
reply = self.send([pickle.dumps(message)])
if reply:
reply_message = pickle.loads(reply[1])
logger.debug("Update response from FarmMonitor")
failed_attempts = 0
# in this case, reply_message.filepath is really a boolean.
# reusing the FileMessage object
more_to_send = reply_message.filepath
data = reply_message.data
new_file.seek(bytes_received)
new_file.write(data)
bytes_received += len(data)
else:
logger.warn("Failed attempt in requesting update file")
failed_attempts += 1
new_file.close()
# compare the hash of the file
sha256 = hashlib.sha256()
with open(update.filepath + update.filename, 'rb') as f:
for block in iter(lambda: f.read(2048), b''):
sha256.update(block)
if update.sha256 == sha256.hexdigest():
logger.info("Update file successfully received")
print('update received good')
session.merge(update)
session.commit()
else:
logger.warn("Update file hash does not match. Update failed")
session.close()
return
# now perform the actual update
run_update(update.id, 'farm_device')
else:
logger.warn("No reply when requesting update db_object from FarMonitor.")
session.close()
return
