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 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 __init__(self, context, endpoint, service):
"""Overridden initializer for MDPWorker.
Adds the device_timer to manage connected devices
"""
session = Session()
session.query(Device).update({Device.connected: False})
session.commit()
self.device_timer = None
super(DeviceServiceManager, self).__init__(context, endpoint, service)
return
def device_watcher(self):
for device in self._connected_devices.values():
if not device.is_alive():
session = Session()
session.query(Device).filter_by(id=device.id) \
.update({Device.connected: False})
session.commit()
device.shutdown()
del self._connected_devices[device.id]
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_interfaces(eth0=None, wlan0=None, wlan1=None):
session = Session()
wifi_ap_present = False
if eth0:
try:
db_eth = session.query(InterfaceDefinition).filter_by(interface='eth0').one()
except NoResultFound:
db_eth = InterfaceDefinition('eth0')
session.add(db_eth)
db_eth.is_active = True
db_eth.is_for_fm = eth0['is_for_fm']
db_eth.state = eth0['state']
if wlan0:
try:
db_wlan0 = session.query(InterfaceDefinition).filter_by(interface='wlan0').one()
except NoResultFound:
db_wlan0 = InterfaceDefinition('wlan0')
session.add(db_wlan0)
db_wlan0.is_active = True
db_wlan0.is_for_fm = wlan0['is_for_fm']
db_wlan0.state = wlan0['state']
if wlan0['state'] == 'ap':
wifi_ap_present = True
if wlan0['wifi']:
set_wifi(db_wlan0, session, wlan0['wifi'])
if wlan1:
try:
db_wlan1 = session.query(InterfaceDefinition).filter_by(interface='wlan1').one()
except NoResultFound:
db_wlan1 = InterfaceDefinition('wlan1')
session.add(db_wlan1)
db_wlan1.is_active = True
db_wlan1.is_for_fm = wlan1['is_for_fm']
db_wlan1.state = wlan1['state']
if wlan1['state'] == 'ap':
wifi_ap_present = True
if wlan1['wifi']:
set_wifi(db_wlan1, session, wlan1['wifi'])
session.commit()
if wifi_ap_present:
set_ap_mode()
else:
set_wpa_mode()
return
def create_backup(user_created=True):
session = Session()
software_version = session.query(SoftwareDefinition.software_version).scalar()
serial_number = session.query(HardwareDefinition.serial_number).scalar()
timestamp = datetime.now().strftime('%Y.%m.%d.%H.%M.%S')
filepath = base_path + serial_number + '.fd.' + timestamp + '/'
zip_filepath = filepath[:-1] + '.zip'
if not os.path.exists(filepath):
os.makedirs(filepath)
if not os.path.exists(filepath + 'database/'):
os.makedirs(filepath + 'database/')
backup = Backup(serial_number, 'farm_device', zip_filepath)
backup.software_version = software_version
backup.user_created = user_created
_backup_database(filepath)
backup.database = True
# _backup_data(filepath)
# backup.data = True
# zip the entire backup into one file
zipf = zipfile.ZipFile(zip_filepath, 'w', zipfile.ZIP_DEFLATED)
for root, dirs, files in os.walk(filepath):
for file in files:
filename = os.path.join(root, file)
zipf.write(filename, os.path.relpath(filename, filepath))
zipf.close()
# store the hash of the file
sha256 = hashlib.sha256()
with open(zip_filepath, 'rb') as f:
for block in iter(lambda: f.read(2048), b''):
sha256.update(block)
backup.sha256 = sha256.hexdigest()
# Remove the folder. Just use the zipfile
shutil.rmtree(filepath)
session.add(backup)
session.commit()
return backup.index
def scan_wifi(interface=None):
# if no interface is given, try find an interface in the database
# that has the state set to 'dhcp'
if interface is None:
session = Session()
interfaces = session.query(InterfaceDefinition).all()
for x in interfaces:
if not x.interface.startswith('eth'):
if x.state == 'dhcp':
interface = x.interface
# exit if still no interface
if interface is None:
logger.warn("No interface available to scan wifi networks")
return []
# scan the interface for networks
command = ['sudo', 'iwlist', interface, 'scan']
output = subprocess.check_output(command)
index = output.find('ESSID:"')
ssid = []
while index > 0:
stop = output.find('"\n', index)
ssid.append(output[index + 7: stop])
output = output[stop + 2:]
index = output.find('ESSID:"')
return ssid
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 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 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 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 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 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 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 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 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 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 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 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 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 _backup_database(filepath):
table_classes = Base._decl_class_registry.values()
session = Session()
for table_class in table_classes:
if hasattr(table_class, '__tablename__'):
query = session.query(table_class)
serialized_data = dumps(query.all())
new_filepath = filepath + 'database/' + table_class.__tablename__
with open(new_filepath, 'w') as text_file:
text_file.write(serialized_data)
return
def delete_backup(backup_index, backup_type, serial_number):
session = Session()
backup = session.query(Backup).filter_by(index=backup_index,
backup_type=backup_type,
serial_number=serial_number).first()
if backup:
if os.path.isfile(backup.filepath):
try:
os.remove(backup.filepath)
except OSError as ex:
print(ex)
session.delete(backup)
session.commit()
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 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 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
