def __init__(self):
try:
# initiate logger
self.logger = logging.getLogger()
self.logger.setLevel(logging.DEBUG)
self.log_send_store_handler = LogSendStoreHandler(LOG_LOCATION)
formatter = logging.Formatter(
'%(asctime)s - %(levelname)s - %(name)s - %(message)s')
self.log_send_store_handler.setFormatter(formatter)
self.logger.addHandler(self.log_send_store_handler)
self.logger.info('Initialising system...')
job_info_filter = JobInfoFilter()
logging.getLogger('apscheduler.scheduler').addFilter(
job_info_filter)
logging.getLogger('apscheduler.threadpool').addFilter(
job_info_filter)
# load local configuration
self.conf_man = ConfigurationManager(CONFIG_LOCATION)
self.log_send_store_handler.update_configuration()
self.scheduler = Scheduler()
self.scheduler.start()
self.packet_manager = PacketManager(self.scheduler)
# initiate network connection
self.connection = ConnectionManager()
# add scheduler and connection to log handler
self.log_send_store_handler.update_configuration(
scheduler=self.scheduler,
connection=self.connection)
# try to connect
connected_to_internet = self.connection.check_internet_connection()
connected_to_server = self.connection.check_server_connection()
if connected_to_internet and connected_to_server:
self.load_online_configuration_and_initiate_sending_data()
self.packet_manager.update_time()
self.packet_manager.initiate_send_packets(self.connection)
else:
'''
if there is no connection:
keep checking for a connection
temporarily use offline timer and modbus slave
configuration
'''
if connected_to_internet:
self.packet_manager.update_time()
self.wait_for_connection_to_load_configuration()
# initiate sensor timers
self.read_sensor_scheduler = ReadSensorScheduler(
self.scheduler,
self.packet_manager)
self.led_manager = LedManager(self.scheduler)
self.led_manager.update_led(PinName.powered, LedState.on)
self.set_up_led_manager_calls()
# sleep 2 seconds to intialise led of log handler
sleep(1)
self.logger.info('Initialisation complete')
while True:
sleep(10)
self.logger.debug('Alive and kicking')
if self.logger.level is logging.DEBUG:
scheduler_jobs = self.scheduler.get_jobs()
if len(scheduler_jobs) > 1:
self.logger.debug('Current scheduler jobs:')
for index, job in enumerate(scheduler_jobs):
self.logger.debug(' Job {0}: {1} {2}'.format(
index,
job.name,
job.next_run_time))
else:
self.logger.debug('No running scheduler jobs')
except Exception as e:
self.logger.error(e)
raise
self.log_send_store_handler.send_logs_job()
class DataLogger:
"""
In this class the different systems are initialiased:
- logger and its handlers
- local configuration
- connection with internet
If there is no connection with the internet:
- A timed job is created that controls internet connection.
- Logging of data is started with local configuration.
- If the internet connection is started, and the online\
configuration differs, the old wrongly logged data will be removed.
If there is connection with the internet and the server is working:
- Check if the online configuration differs from the local one. If so,\
the configuration will be updated.
- Logging of data is started.
- Sending of data is started.
- A timed job is created that checks if the online configuration is\
updated
- The management of leds is started.
"""
def __init__(self):
try:
# initiate logger
self.logger = logging.getLogger()
self.logger.setLevel(logging.DEBUG)
self.log_send_store_handler = LogSendStoreHandler(LOG_LOCATION)
formatter = logging.Formatter(
'%(asctime)s - %(levelname)s - %(name)s - %(message)s')
self.log_send_store_handler.setFormatter(formatter)
self.logger.addHandler(self.log_send_store_handler)
self.logger.info('Initialising system...')
job_info_filter = JobInfoFilter()
logging.getLogger('apscheduler.scheduler').addFilter(
job_info_filter)
logging.getLogger('apscheduler.threadpool').addFilter(
job_info_filter)
# load local configuration
self.conf_man = ConfigurationManager(CONFIG_LOCATION)
self.log_send_store_handler.update_configuration()
self.scheduler = Scheduler()
self.scheduler.start()
self.packet_manager = PacketManager(self.scheduler)
# initiate network connection
self.connection = ConnectionManager()
# add scheduler and connection to log handler
self.log_send_store_handler.update_configuration(
scheduler=self.scheduler,
connection=self.connection)
# try to connect
connected_to_internet = self.connection.check_internet_connection()
connected_to_server = self.connection.check_server_connection()
if connected_to_internet and connected_to_server:
self.load_online_configuration_and_initiate_sending_data()
self.packet_manager.update_time()
self.packet_manager.initiate_send_packets(self.connection)
else:
'''
if there is no connection:
keep checking for a connection
temporarily use offline timer and modbus slave
configuration
'''
if connected_to_internet:
self.packet_manager.update_time()
self.wait_for_connection_to_load_configuration()
# initiate sensor timers
self.read_sensor_scheduler = ReadSensorScheduler(
self.scheduler,
self.packet_manager)
self.led_manager = LedManager(self.scheduler)
self.led_manager.update_led(PinName.powered, LedState.on)
self.set_up_led_manager_calls()
# sleep 2 seconds to intialise led of log handler
sleep(1)
self.logger.info('Initialisation complete')
while True:
sleep(10)
self.logger.debug('Alive and kicking')
if self.logger.level is logging.DEBUG:
scheduler_jobs = self.scheduler.get_jobs()
if len(scheduler_jobs) > 1:
self.logger.debug('Current scheduler jobs:')
for index, job in enumerate(scheduler_jobs):
self.logger.debug(' Job {0}: {1} {2}'.format(
index,
job.name,
job.next_run_time))
else:
self.logger.debug('No running scheduler jobs')
except Exception as e:
self.logger.error(e)
raise
self.log_send_store_handler.send_logs_job()
def load_online_configuration_and_initiate_sending_data(self):
# check online configuration
try:
online_checksum = self.connection.get_configuration_checksum()
self.logger.info("Checking online configuration..")
if self.conf_man.is_online_configuration_different(online_checksum):
self.logger.info(
'Online configuration is new, updating configuration..')
online_configuration = self.connection.get_configuration()
self.conf_man.validate_json_configuration(online_configuration)
self.conf_man.save_configuration_local(
online_checksum,
online_configuration)
self.packet_manager.remove_all_packets_from_memory()
# update systems that make use of the configuration
self.log_send_store_handler.update_configuration(
scheduler=self.scheduler,
connection=self.connection)
self.connection.update_configuration()
try:
self.read_sensor_scheduler.update_configuration()
except:
pass
self.packet_manager.update_configuration()
except:
self.logger.warning('Problem updating configuration')
raise
try: # try to remove job
self.scheduler.unschedule_func(
self.load_online_configuration_and_initiate_sending_data)
except:
pass
# periodically check changes in configuration
self.scheduler.add_interval_job(
self.load_online_configuration_and_initiate_sending_data,
seconds=configuration.get_time_interval_to_check_online_config())
self.packet_manager.initiate_send_packets(self.connection)
def wait_for_connection_to_load_configuration(self):
if not self.connection.is_connected():
# no internet connection, start job to check connection
self.scheduler.add_interval_job(self.try_to_connect_to_internet,
seconds=CHECK_CONNECTION_INTERVAL)
else:
self.packet_manager.update_time()
if not self.connection.check_server_connection():
# no connection with server, start job to check connection
self.scheduler.add_interval_job(
self.try_to_load_online_configuration,
seconds=CHECK_CONNECTION_INTERVAL)
def try_to_connect_to_internet(self):
if self.connection.check_internet_connection():
self.scheduler.unschedule_func(self.try_to_connect_to_internet)
self.packet_manager.update_time()
if not self.connection.check_server_connection():
# no connection with server, start job to check connection
self.scheduler.add_interval_job(
self.try_to_load_online_configuration,
seconds=CHECK_CONNECTION_INTERVAL)
else:
self.load_online_configuration_and_initiate_sending_data()
def try_to_load_online_configuration(self):
if self.connection.check_server_connection():
self.load_online_configuration_and_initiate_sending_data()
self.scheduler.unschedule_func(
self.try_to_load_online_configuration)
def set_up_led_manager_calls(self):
sensor_led_call = LedCall(self.led_manager, PinName.readingsensor)
connected_led_call = LedCall(self.led_manager, PinName.connected)
logging_led_call = LedCall(self.led_manager, PinName.logging)
self.read_sensor_scheduler.set_led_call(sensor_led_call)
self.connection.set_led_call(connected_led_call)
self.log_send_store_handler.set_led_call(logging_led_call)