class PythonCharts(object):
def __init__(self,
- interval=1,
+ interval=None,
modules=[],
modules_path='../python.d/',
modules_configs='../conf.d/'):
self.first_run = True
- self.interval = interval
+ if interval is None:
+ interval = 1
+ self.default_priority = 90000
# check if plugin directory exists
if not os.path.isdir(modules_path):
debug("cannot find charts directory ", modules_path)
self.modules = []
if len(modules) > 0:
for m in modules:
- self.modules.append(
- self.import_plugin(
- modules_path + m + ".chart.py"))
+ mod = self.import_plugin(modules_path + m + ".chart.py")
+ if mod is not None:
+ self.modules.append(mod)
+ if len(self.modules) == 0:
+ debug("cannot find provided module(s)", modules_path)
+ sys.stdout.write("DISABLE\n")
+ sys.exit(1)
else:
self.load_modules(modules_path)
if len(self.modules) == 0:
self.load_configs()
- # set last execution and execution frequency dict
+ # set timetable dict (last execution, next execution and frequency)
+ # set priorities
self.timetable = {}
for m in self.modules:
try:
- interval = m.update_every
- interval = int(interval)
- except AttributeError:
- interval = self.interval
- except ValueError:
- interval = self.interval
- debug(m.__name__ +
- ": wrong value of 'update_every' setting to " +
- str(self.interval))
- # ensure module update frequency is not less than execution of this program
- if interval < self.interval:
- interval = self.interval
- # charts updates are twice as frequent as user specified
- self.timetable[m.__name__] = [0, interval/2.0]
+ m.priority = int(m.priority)
+ except (AttributeError,ValueError):
+ m.priority = self.default_priority
+
+ if interval is None:
+ try:
+ interval = int(m.update_every)
+ except (AttributeError, ValueError):
+ interval = 1
+
+ now = time.time()
+ self.timetable[m.__name__] = {'last' : now,
+ 'next' : now - (now % interval) + interval,
+ 'freq' : interval}
def import_plugin(self, path, name=None):
if name is None:
mod.__name__ +
".conf' not found. Using defaults.")
elif reason[:11] == "misbehaving":
- debug(mod.__name__, "is misbeaving. Disabling it")
+ debug(mod.__name__, "is "+reason)
def check(self):
for mod in self.modules:
" '' 'Execution time for " +
chart +
" plugin' 'milliseconds / run' python.d netdata.plugin_python area 145000 " +
- str(self.timetable[mod.__name__][1]) +
+ str(self.timetable[mod.__name__]['freq']) +
'\n')
sys.stdout.write("DIMENSION run_time 'run time' absolute 1 1\n\n")
sys.stdout.flush()
self.disable_module(mod, "misbehaving")
def update_module(self, mod):
- t1 = time.time()
+ t_start = time.time()
# check if it is time to execute module update() function
- if (t1 - self.timetable[mod.__name__][0]) < self.timetable[mod.__name__][1]:
+ if self.timetable[mod.__name__]['next'] > t_start:
return
try:
- if not self.first_run:
- t = ""
+ if self.first_run:
+ since_last = 0
else:
- t=int((t1- self.timetable[mod.__name__][0]) * 1000000)
- if not mod.update(t):
+ since_last = int((t_start - self.timetable[mod.__name__]['last']) * 1000000)
+ if not mod.update(since_last):
self.disable_module(mod, "update failed")
return
except AttributeError:
self.disable_module(mod, "no update")
return
- except UnboundLocalError:
- self.disable_module(mod, "misbehaving")
+ except (UnboundLocalError, Exception) as e:
+ self.disable_module(mod, "misbehaving. Reason: " + str(e))
return
- t2 = time.time()
+ t_end = time.time()
+ self.timetable[mod.__name__]['next'] = t_end - (t_end % self.timetable[mod.__name__]['freq']) + self.timetable[mod.__name__]['freq']
if self.first_run:
- dt = ""
+ dt = 0
else:
- dt = int((t2 - self.timetable[mod.__name__][0]) * 1000000)
- sys.stdout.write("BEGIN netdata.plugin_pythond_"+mod.__name__+" "+str(dt)+'\n')
- sys.stdout.write("SET run_time = " + str(int((t2 - t1) * 1000)) + '\n')
+ dt = int((t_end - self.timetable[mod.__name__]['last']) * 1000000)
+ sys.stdout.write("BEGIN netdata.plugin_pythond_"+mod.__name__+" "+str(since_last)+'\n')
+ sys.stdout.write("SET run_time = " + str(int((t_end - t_start) * 1000)) + '\n')
sys.stdout.write("END\n")
sys.stdout.flush()
- self.timetable[mod.__name__][0] = t1
+ self.timetable[mod.__name__]['last'] = t_start
+ self.first_run = False
def update(self):
+ self.first_run = True
while True:
t_begin = time.time()
+ next_runs = []
for mod in self.modules:
self.update_module(mod)
- time.sleep((self.interval - (time.time() - t_begin)) / 2)
- self.first_run = False
+ try:
+ next_runs.append(self.timetable[mod.__name__]['next'])
+ except KeyError:
+ pass
+ if len(next_runs) == 0:
+ debug("No plugins loaded")
+ sys.stdout.write("DISABLE\n")
+ sys.exit(1)
+ time.sleep(min(next_runs) - time.time())
def read_config(path):
def parse_cmdline(directory, *commands):
# TODO number -> interval
- global DEBUG_FLAG, PROGRAM
+ global DEBUG_FLAG
DEBUG_FLAG = False
interval = None
except ValueError:
pass
- PROGRAM = commands[0].split('/')[-1].split('.plugin')[0]
debug("started from", commands[0], "with options:", *commands[1:])
return {'interval': interval,
# if __name__ == '__main__':
def run():
+ global DEBUG_FLAG, PROGRAM
+ DEBUG_FLAG = True
+ PROGRAM = sys.argv[0].split('/')[-1].split('.plugin')[0]
# parse env variables
# https://github.com/firehol/netdata/wiki/External-Plugins#environment-variables
main_dir = os.getenv('NETDATA_PLUGINS_DIR',
interval = int(conf['interval'])
except (KeyError, TypeError):
pass # default interval
- global DEBUG_FLAG
try:
DEBUG_FLAG = bool(conf['debug'])
except (KeyError, TypeError):
# parse passed command line arguments
out = parse_cmdline(modules_dir, *sys.argv)
modules = out['modules']
- if out['interval'] is not None:
- interval = out['interval']
+# if out['interval'] is not None:
+# interval = out['interval']
+
+ # configure environement to run modules
+ #sys.path.append(modules_dir+"python_modules") # append path to directory with modules dependencies
# run plugins
- charts = PythonCharts(interval, modules, modules_dir, modules_conf)
+# charts = PythonCharts(interval, modules, modules_dir, modules_conf)
+ charts = PythonCharts(out['interval'], modules, modules_dir, modules_conf)
charts.check()
charts.create()
charts.update()
projects / netdata.git / blobdiff