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 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 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 __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 delete_wifi_network(id):
session = Session()
session.query(WifiDefinition).filter_by(id=id).delete()
session.commit()
session.close()
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 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 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 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 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
class TagAttributeHandler(Handler):
def __init__(self):
self.session = Session()
def get(self, entity_type_id, ident=None):
entity_type = get_one(self.session, EntityType, id=entity_type_id)
if ident is None:
return [
tag.to_dict() for tag in get_all(
self.session, TagAttribute, entity_type=entity_type)
]
else:
return get_one(self.session,
TagAttribute,
entity_type=entity_type,
id=ident).to_dict()
@requires_validation(assert_attribute_does_not_exist(TagAttribute),
with_route_params=True)
@requires_validation(Schema({Required('name'): non_empty_string}))
def post(self, entity_type_id):
data = self.request.data
entity_type = get_one(self.session, EntityType, id=entity_type_id)
tag = TagAttribute(entity_type=entity_type, name=data['name'])
self.session.add(tag)
self.session.commit()
update_last_data_modification_ts(self.session)
return {'success': True, 'ID': tag.id}
def delete(self, entity_type_id, ident):
entity_type = get_one(self.session, EntityType,
id=entity_type_id) # check if route is correct
tag = get_one(self.session,
TagAttribute,
entity_type=entity_type,
id=ident)
now = time.time()
tag.delete_ts = now
for entity_tag in get_all(self.session, EntityTag, attribute=tag):
entity_tag.delete_ts = now
self.session.commit()
update_last_data_modification_ts(self.session)
return {'success': True}
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 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 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 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
class MetaAttributeHandler(Handler):
def __init__(self):
self.session = Session()
def get(self, entity_type_id, ident=None):
entity_type = get_one(self.session, EntityType, id=entity_type_id)
if ident is None:
return [meta.to_dict() for meta in get_all(self.session, MetaAttribute, entity_type=entity_type)]
else:
return get_one(self.session, MetaAttribute, entity_type=entity_type, id=ident).to_dict()
@requires_validation(assert_attribute_does_not_exist(MetaAttribute), with_route_params=True)
@requires_validation(Schema({Required('name'): non_empty_string}))
def post(self, entity_type_id):
data = self.request.data
entity_type = get_one(self.session, EntityType, id=entity_type_id)
meta = MetaAttribute(entity_type=entity_type, name=data['name'])
self.session.add(meta)
self.session.commit()
update_last_data_modification_ts(self.session)
return {
'success': True,
'ID': meta.id
}
@requires_validation(assert_attribute_does_not_exist(MetaAttribute), with_route_params=True)
@requires_validation(Schema({'name': non_empty_string}))
def put(self, entity_type_id, ident):
data = self.request.data
entity_type = get_one(self.session, EntityType, id=entity_type_id) # check if route is correct
meta = get_one(self.session, MetaAttribute, entity_type=entity_type, id=ident)
if 'name' in data:
meta.name = data['name']
self.session.commit()
update_last_data_modification_ts(self.session)
return {
'success': True,
'ID': meta.id,
}
def delete(self, entity_type_id, ident):
entity_type = get_one(self.session, EntityType, id=entity_type_id) # check if route is correct
meta = get_one(self.session, MetaAttribute, entity_type=entity_type, id=ident)
now = time.time()
meta.delete_ts = now
for entity_meta in get_all(self.session, EntityMeta, attribute=meta):
entity_meta.delete_ts = now
self.session.commit()
update_last_data_modification_ts(self.session)
return {'success': True}
class SeriesAttributeHandler(Handler):
def __init__(self):
self.session = Session()
def get(self, entity_type_id, ident=None):
entity_type = get_one(self.session, EntityType, id=entity_type_id)
if ident is None:
return [
series.to_dict() for series in get_all(
self.session, SeriesAttribute, entity_type=entity_type)
]
else:
return get_one(self.session,
SeriesAttribute,
entity_type=entity_type,
id=ident).to_dict()
@requires_validation(assert_attribute_does_not_exist(SeriesAttribute),
with_route_params=True)
@requires_validation(
Schema({
Required('name'): non_empty_string,
'type': Or('real', 'enum'),
'refresh_time': Or(int, None),
'is_favourite': bool,
}))
def post(self, entity_type_id):
data = self.request.data
entity_type = get_one(self.session, EntityType, id=entity_type_id)
series = SeriesAttribute(entity_type=entity_type,
name=data['name'],
type=data.get('type', 'real'),
refresh_time=data.get('refresh_time'),
is_favourite=data.get('is_favourite', False))
self.session.add(series)
self.session.commit()
update_last_data_modification_ts(self.session)
return {'success': True, 'ID': series.id}
@requires_validation(
Schema({
'refresh_time': Or(int, None),
'is_favourite': bool,
}))
def put(self, entity_type_id, ident):
data = self.request.data
entity_type = get_one(self.session, EntityType, id=entity_type_id)
series = get_one(self.session,
SeriesAttribute,
entity_type=entity_type,
id=ident)
if 'refresh_time' in data:
series.refresh_time = data['refresh_time']
if 'is_favourite' in data:
series.is_favourite = data['is_favourite']
self.session.commit()
update_last_data_modification_ts(self.session)
return {'success': True, 'ID': series.id}
def delete(self, entity_type_id, ident):
now = time.time()
entity_type = get_one(self.session, EntityType,
id=entity_type_id) # check if route is correct
series = get_one(self.session,
SeriesAttribute,
entity_type=entity_type,
id=ident)
series.delete_ts = now
for alert in series.alerts:
alert.delete_ts = now
self.session.commit()
update_last_data_modification_ts(self.session)
return {'success': True}
class AlertHandler(Handler):
def __init__(self):
self.session = Session()
def get(self, ident=None):
if ident is None:
return [alert.to_dict() for alert in get_all(self.session, Alert)]
else:
return get_one(self.session, Alert, id=ident).to_dict()
@requires_validation(
Schema({
Required('entity_id'):
int,
Required('series_id'):
int,
Required('alert_predicate_type'):
Or('data_delay', 'value_too_low', 'value_too_high'),
Required('value'):
float,
Required('is_enabled'):
bool,
Required('alert_recipient_email'):
Email,
}))
def post(self):
data = self.request.data
entity = get_one(self.session, Entity, id=data['entity_id'])
series = get_one(self.session, SeriesAttribute, id=data['series_id'])
alert = Alert(entity=entity,
series=series,
alert_predicate_type=data['alert_predicate_type'],
value=data['value'],
is_enabled=data['is_enabled'],
alert_recipient_email=data['alert_recipient_email'])
self.session.add(alert)
self.session.commit()
return {'success': True, 'ID': alert.id}
@requires_validation(
Schema({
'entity_id':
int,
'series_id':
int,
'alert_predicate_type':
Or('data_delay', 'value_too_low', 'value_too_high'),
'value':
float,
'is_enabled':
bool,
'alert_recipient_email':
Email,
}))
def put(self, ident):
data = self.request.data
alert = get_one(self.session, Alert, id=ident)
if 'entity_id' in data:
entity = get_one(self.session, Entity, id=data['entity_id'])
alert.entity_id_fk = entity.id
if 'series_id' in data:
series = get_one(self.session,
SeriesAttribute,
id=data['series_id'])
alert.series_id_fk = series.id
if 'alert_predicate_type' in data:
alert.alert_predicate_type = data['alert_predicate_type']
if 'value' in data:
alert.value = data['value']
if 'is_enabled' in data:
alert.is_enabled = data['is_enabled']
if 'alert_recipient_email' in data:
alert.alert_recipient_email = data['alert_recipient_email']
# reset last check status
alert.last_check_status = None
self.session.commit()
return {
'success': True,
'ID': alert.id,
}
def delete(self, ident):
alert = get_one(self.session, Alert, id=ident)
now = time.time()
alert.delete_ts = now
self.session.commit()
update_last_data_modification_ts(self.session)
return {'success': True}
class EntityTypeHandler(Handler):
def __init__(self):
self.session = Session()
def get(self, ident=None):
if ident is None:
return [
entity_type.to_dict()
for entity_type in get_all(self.session, EntityType)
]
else:
return get_one(self.session, EntityType, id=ident).to_dict()
@requires_validation(
Schema({
Required('name'): non_empty_string,
Required('tags'): And([non_empty_string], Unique()),
Required('meta'): And([non_empty_string], Unique()),
Required('series'): And([non_empty_string], Unique()),
}))
def post(self):
data = self.request.data
entity_type = EntityType(name=data['name'])
self.session.add(entity_type)
# add tags, meta and series
for tag in data['tags']:
self.session.add(TagAttribute(
entity_type=entity_type,
name=tag,
))
for meta in data['meta']:
self.session.add(
MetaAttribute(
entity_type=entity_type,
name=meta,
))
for series in data['series']:
self.session.add(
SeriesAttribute(
entity_type=entity_type,
name=series,
))
self.session.commit()
update_last_data_modification_ts(self.session)
return {
'success': True,
'ID': entity_type.id,
}
@requires_validation(_assert_objects_were_not_created,
with_route_params=True)
@requires_validation(
Schema({
'name': non_empty_string,
'tags': And([non_empty_string], Unique()),
'meta': And([non_empty_string], Unique()),
'series': And([non_empty_string], Unique()),
}))
def put(self, ident):
data = self.request.data
entity_type = get_one(self.session, EntityType, id=ident)
if 'name' in data:
entity_type.name = data['name']
# add tags, meta and series
if 'tags' in data:
for tag in data['tags']:
self.session.add(
TagAttribute(
entity_type=entity_type,
name=tag,
))
if 'meta' in data:
for meta in data['meta']:
self.session.add(
MetaAttribute(
entity_type=entity_type,
name=meta,
))
if 'series' in data:
for series in data['series']:
self.session.add(
SeriesAttribute(
entity_type=entity_type,
name=series,
))
self.session.commit()
update_last_data_modification_ts(self.session)
return {
'success': True,
'ID': entity_type.id,
}
def delete(self, ident):
entity_type = get_one(self.session, EntityType, id=ident)
now = time.time()
entity_type.delete_ts = now
for tag in entity_type.tags:
tag.delete_ts = now
for series in entity_type.series:
series.delete_ts = now
for alert in series.alerts:
alert.delete_ts = now
for meta in entity_type.meta:
meta.delete_ts = now
for entity in entity_type.nodes:
entity.delete_ts = now
for tag in entity.tags:
tag.delete_ts = now
for meta in entity.meta:
meta.delete_ts = now
for child in entity.children:
child.parent = entity.parent
self.session.commit()
update_last_data_modification_ts(self.session)
return {'success': True}
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
class EntityHandler(Handler):
def __init__(self):
self.session = Session()
def get(self, ident=None):
if ident is None:
return [
entity.to_dict(deep=False)
for entity in get_all(self.session, Entity)
]
else:
return get_one(self.session, Entity, id=ident).to_dict(deep=False)
@staticmethod
def _assert_got_all_needed_tag_and_meta_ids(entity_type, tag_ids,
meta_ids):
expected_tag_ids = sorted(tag.id for tag in entity_type.tags
if tag.delete_ts is None)
expected_meta_ids = sorted(meta.id for meta in entity_type.meta
if meta.delete_ts is None)
if tag_ids != expected_tag_ids:
raise HTTP_400('Expected tag IDs {}, got {}'.format(
expected_tag_ids, tag_ids))
if meta_ids != expected_meta_ids:
raise HTTP_400('Expected meta IDs {}, got {}'.format(
expected_meta_ids, meta_ids))
@requires_validation(
Schema(
{
Required('parent_id'): Or(int, None),
Required('entity_type_id'): int,
},
extra=ALLOW_EXTRA))
def post(self):
data = self.request.data
entity_type = get_one(self.session,
EntityType,
id=data['entity_type_id'])
# check if we got all tags and meta
tag_ids = sorted(
int(key.split('_')[1]) for key in data if 'tag_' in key)
meta_ids = sorted(
int(key.split('_')[1]) for key in data if 'meta_' in key)
self._assert_got_all_needed_tag_and_meta_ids(entity_type, tag_ids,
meta_ids)
entity = Entity(
entity_type=entity_type,
parent=None if data['parent_id'] is None else get_one(
self.session, Entity, id=data['parent_id']),
)
self.session.add(entity)
# add tags and meta
for key in data:
if 'tag_' in key:
self.session.add(
EntityTag(
entity=entity,
attribute=get_one(self.session,
TagAttribute,
id=int(key.split('_')[1])),
value=data[key],
))
elif 'meta_' in key:
self.session.add(
EntityMeta(
entity=entity,
attribute=get_one(self.session,
MetaAttribute,
id=int(key.split('_')[1])),
value=data[key],
))
self.session.commit()
update_last_data_modification_ts(self.session)
return {
'success': True,
'ID': entity.id,
}
def put(self, ident):
data = self.request.data
entity = get_one(self.session, Entity,
id=ident) # to ensure that the entity exists
if 'parent_id' in data:
get_one(self.session, Entity, id=data['parent_id'])
entity.parent_id_fk = data['parent_id']
# add tags and meta
for key in data:
if 'tag_' in key:
tag = get_one(self.session,
EntityTag,
entity=entity,
tag_id_fk=key.split('_')[1])
tag.value = data[key]
elif 'meta_' in key:
meta = get_one(self.session,
EntityMeta,
entity=entity,
meta_id_fk=key.split('_')[1])
meta.value = data[key]
self.session.commit()
update_last_data_modification_ts(self.session)
return {
'success': True,
'ID': entity.id,
}
def delete(self, ident):
entity = get_one(self.session, Entity, id=ident)
now = time.time()
entity.delete_ts = now
for tag in entity.tags:
tag.delete_ts = now
for meta in entity.meta:
meta.delete_ts = now
for alert in entity.alerts:
alert.delete_ts = now
for child in entity.children:
child.parent = entity.parent
self.session.commit()
update_last_data_modification_ts(self.session)
return {'success': True}
