def test_bgsync(self):
s = self.device["mystream"]
# This time we test existing stream
s.create({"type": "string"})
l = Logger("test.db")
l.serverurl = TEST_URL
l.apikey = self.apikey
l.addStream("mystream")
l.syncperiod = 1
self.assertEqual(0, len(s))
self.assertEqual(0, len(l))
l.start()
l.insert("mystream", "hi")
l.insert("mystream", "hello")
self.assertEqual(0, len(s))
self.assertEqual(2, len(l))
time.sleep(1.1)
self.assertEqual(2, len(s))
self.assertEqual(0, len(l))
l.insert("mystream", "har")
self.assertEqual(2, len(s))
self.assertEqual(1, len(l))
time.sleep(1.1)
self.assertEqual(3, len(s))
self.assertEqual(0, len(l))
l.stop()
l.insert("mystream", "stopped")
time.sleep(1.3)
self.assertEqual(3, len(s))
self.assertEqual(1, len(l))
l.close()
class LaptopLogger():
def __init__(self,firstrun_callback=None):
self.firstrun_callback = firstrun_callback
self.syncer = None
self.isrunning = False
self.issyncing = False
#Get the data gatherers. currentgatherers is the ones that are set to ON
# gatherers is ALL of them
self.currentgatherers = {}
self.gatherers = {}
for p in getplugins():
g = p()
self.currentgatherers[g.streamname] = g
self.gatherers[g.streamname] = g
filedir = files.getFileFolder()
cachefile = os.path.join(filedir,"cache.db")
logging.info("Opening database " + cachefile)
self.cache = Logger(cachefile,on_create=self.create_callback)
# Disable the relevant gatherers
for g in self.cache.data["disabled_gatherers"]:
if g in self.currentgatherers:
del self.currentgatherers[g]
# If ConnectorDB is managed, start the executable
self.localdir = os.path.join(filedir,"db")
self.localrunning = False
self.runLocal()
#Start running the logger if it is supposed to be running
if self.cache.data["isrunning"]:
self.start()
if self.cache.data["isbgsync"]:
self.startsync()
# This can be used to start a local version of ConnectorDB
def runLocal(self):
if self.cache.data["runlocal"] and not self.localrunning:
logging.info("Starting ConnectorDB server")
try:
self.localrunning = True
retcode = cdbmanager.Manager(self.localdir).start()
# The method needed to start on windows doesn't return error codes.
if (platform.system()=="Windows"):
return True
logging.debug("Start return code: " +str(retcode))
return retcode==0
except Exception as e:
logging.error(str(e))
self.localrunning = False
return False
return False
def create_callback(self,c):
logging.info("Creating new cache file...")
c.data = {
"runlocal": False, # Whether or not to run a local ConnectorDB instance (the ConnectorDB server)
"isrunning": False, # Whether or not the logger is currently gathering data. This NEEDS to be false - it is set to true later
"isbgsync": False, # Whether or not the logger automatically syncs with ConnectorDB. Needs to be false - automatically set to True later
"gathertime": 4.0, # The logger gathers datapoints every this number of seconds
"disabled_gatherers": [], # The names of disabled gatherers
}
c.syncperiod = 60*60 # Sync once an hour
#We now need to set the API key
if self.firstrun_callback is not None:
self.firstrun_callback(c)
def removegatherer(self,g):
logging.info("Removing gatherer " + g)
if g in self.currentgatherers:
del self.currentgatherers[g]
if self.isrunning:
self.gatherers[g].stop()
# Save the setting
d = self.cache.data
if not g in d["disabled_gatherers"]:
d["disabled_gatherers"].append(g)
self.cache.data = d
def addgatherer(self,g):
logging.info("Adding gatherer " + g)
if not g in self.currentgatherers:
if self.isrunning:
self.gatherers[g].start(self.cache)
self.currentgatherers[g] = self.gatherers[g]
# Save the setting
d = self.cache.data
if g in d["disabled_gatherers"]:
d["disabled_gatherers"].remove(g)
self.cache.data = d
def gather(self):
for g in self.currentgatherers:
self.currentgatherers[g].run(self.cache)
self.syncer = threading.Timer(self.cache.data["gathertime"],self.gather)
self.syncer.daemon = True
self.syncer.start()
# Whether or not to run data gathering
def start(self):
if not self.isrunning:
logging.info("Start acquisition")
d = self.cache.data
d["isrunning"] = True
self.cache.data = d
#First, make sure all streams are ready to go in the cache
for g in self.gatherers:
if not g in self.cache:
gatherer = self.gatherers[g]
logging.info("Adding {} stream ({})".format(g,self.gatherers[g].streamschema))
nickname = ""
if hasattr(gatherer,"nickname"):
nickname = gatherer.nickname
datatype = ""
if hasattr(gatherer,"datatype"):
datatype = gatherer.datatype
self.cache.addStream(g,gatherer.streamschema,description=gatherer.description,nickname=nickname,datatype=datatype)
for g in self.currentgatherers:
self.currentgatherers[g].start(self.cache)
self.isrunning = True
self.gather()
# Whether or not to run background syncer
def startsync(self):
if not self.issyncing:
logging.info("Start background sync")
d = self.cache.data
d["isbgsync"] = True
self.cache.data = d
self.cache.start()
self.issyncing = True
def stop(self,temporary=False):
logging.info("Stop acquisition")
if self.syncer is not None:
self.syncer.cancel()
self.syncer = None
for g in self.currentgatherers:
self.currentgatherers[g].stop()
if not temporary:
d = self.cache.data
d["isrunning"] = False
self.cache.data = d
self.isrunning = False
def stopsync(self):
self.cache.stop()
d = self.cache.data
d["isbgsync"] = False
self.cache.data = d
self.issyncing= False
def exit(self):
# exit performs cleanup - in this case, shutting down the ConnectorDB database on exit
if self.cache.data["runlocal"] and self.localrunning:
logging.info("Shutting down ConnectorDB server")
try:
cdbmanager.Manager(self.localdir).stop()
self.localrunning = False
except:
pass