def __init__(self, section, options={}):
"""Initialise the cache thread
Manage a cache for the rrd.
A timer in a separated thread will pickle the cache to disk every 30 seconds.
An other thread will update the rrd every hours
:param options: The options used to start the worker.
:type clientid: str
"""
self.section = section
BaseThread.__init__(self, options=options)
self.config_timeout_delay = 1
self.loop_sleep = 0.01
self._lock = threading.Lock()
#~ self._cache_rrd_ttl = 60*60
self._cache_rrd_ttl = 60*60
self._cache_pickle_ttl = 240
self._cache_pickle_timer = None
self._cache_dead_ttl = 60*60*24
self._cache_dead_timer = None
self._thread_delay = 0.01
self._rrd_rotate_next_run = None
self._rrd_rotate_ttl = 1
self._dirmask = None
self._filemask = None
self._cache = {}
"""
whe have a datasource with a unique_name haddnode but at component start, we don't have it.
whe receive data from mqtt with params : haddvalue, value_uuid, value_index at etime
whe should update the rrd with : rtime:val1:val2:val3 ...
Whe should be abble to flush a rrd file for graphing
cache { 'rrd_0001' : { 'step':300, 'values' : {'epoch_time' : { 0 : 'U', ...}}, 'labels':{0:...}}
When updating a data, we can find the latest serie values filtering on epoch_time
We should look at the cache to find rrd_files that need a new serie of values (now - last_epoch) > step.
In this case, we add a new serie of with 'U' as values.
hadd
value_uuid
value_index
"""
self.epoch = datetime.datetime(1970,1,1)
self._mqttc = None
"""
"""
self.params = {}
def __init__(self, section, options={}):
"""Initialise the cache thread
Manage a cache for the rrd.
A timer in a separated thread will pickle the cache to disk every 30 seconds.
An other thread will update the rrd every hours
:param options: The options used to start the worker.
:type clientid: str
"""
self.section = section
BaseThread.__init__(self, options=options)
self.config_timeout_delay = 1.5
self.loop_sleep = 0.005
self.host = "localhost"
self.port = 8081
self._server = None