def init_structure(self):
"""
Initialize structure manager using settings provided
in configuration file.
"""
custom_settings = self.settings['config']
structure_settings = custom_settings.get('structure', {})
# detect and apply database storage module
storage_module = structure_settings.get(
'storage', 'centrifuge.structure.sqlite'
)
storage = utils.import_module(storage_module)
structure = Structure(self)
structure.set_storage(storage)
self.structure = structure
def run_periodic_structure_update():
structure.update()
periodic_structure_update = tornado.ioloop.PeriodicCallback(
structure.update, structure_settings.get('update_interval', 30)*1000
)
periodic_structure_update.start()
tornado.ioloop.IOLoop.instance().add_callback(
partial(
storage.init_storage,
structure,
structure_settings.get('settings', {}),
run_periodic_structure_update
)
)
logger.info("Storage module: {0}".format(storage_module))
def init_structure(self):
"""
Initialize structure manager using settings provided
in configuration file.
"""
custom_settings = self.settings['config']
self.structure = Structure(self)
self.structure.set_storage(self.storage)
def run_periodic_structure_update():
# update structure periodically from database. This is necessary to be sure
# that application has actual and correct structure information. Structure
# updates also triggered in real-time by message passing through control channel,
# but in rare cases those update messages can be lost because of some kind of
# network errors
logger.info("Structure initialized")
self.structure.update()
structure_update_interval = custom_settings.get(
'structure_update_interval', 60)
logger.info(
"Periodic structure update interval: {0} seconds".format(
structure_update_interval))
periodic_structure_update = tornado.ioloop.PeriodicCallback(
self.structure.update, structure_update_interval * 1000)
periodic_structure_update.start()
tornado.ioloop.IOLoop.instance().add_callback(
partial(self.storage.connect, run_periodic_structure_update))