netdata/python.d/python_modules/bases/collection.py at master · chengfangang/netdata · GitHub

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# -*- coding: utf-8 -*-

# Description:

# Author: Ilya Mashchenko (l2isbad)

import os

PATH = os.getenv('PATH', '/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin').split(':')

CHART_BEGIN = 'BEGIN {0} {1}\n'

CHART_CREATE = "CHART {0} '{1}' '{2}' '{3}' '{4}' '{5}' {6} {7} {8}\n"

DIMENSION_CREATE = "DIMENSION '{0}' '{1}' {2} {3} {4} '{5}'\n"

DIMENSION_SET = "SET '{0}' = {1}\n"

def setdefault_values(config, base_dict):

for key, value in base_dict.items():

config.setdefault(key, value)

return config

def run_and_exit(func):

def wrapper(*args, **kwargs):

func(*args, **kwargs)

exit(1)

return wrapper

def on_try_except_finally(on_except=(None, ), on_finally=(None, )):

except_func = on_except[0]

finally_func = on_finally[0]

def decorator(func):

def wrapper(*args, **kwargs):

try:

func(*args, **kwargs)

except Exception:

if except_func:

except_func(*on_except[1:])

finally:

if finally_func:

finally_func(*on_finally[1:])

return wrapper

return decorator

def static_vars(**kwargs):

def decorate(func):

for k in kwargs:

setattr(func, k, kwargs[k])

return func

return decorate

@on_try_except_finally(on_except=(exit, 1))

def safe_print(*msg):

"""

:param msg:

:return:

"""

print(''.join(msg))

def find_binary(binary):

"""

:param binary: <str>

:return:

"""

for directory in PATH:

binary_name = '/'.join([directory, binary])

if os.path.isfile(binary_name) and os.access(binary_name, os.X_OK):

return binary_name

return None

def read_last_line(f):

with open(f, 'rb') as opened:

opened.seek(-2, 2)

while opened.read(1) != b'\n':

opened.seek(-2, 1)

if opened.tell() == 0:

break

result = opened.readline()

return result.decode()

class OldVersionCompatibility:

def __init__(self):

self._data_stream = str()

def begin(self, type_id, microseconds=0):

"""

:param type_id: <str>

:param microseconds: <str> or <int>: must be a digit

:return:

"""

self._data_stream += CHART_BEGIN.format(type_id, microseconds)

def set(self, dim_id, value):

"""

:param dim_id: <str>

:param value: <int> or <str>: must be a digit

:return:

"""

self._data_stream += DIMENSION_SET.format(dim_id, value)

def end(self):

self._data_stream += 'END\n'

def chart(self, type_id, name='', title='', units='', family='', category='', chart_type='line',

priority='', update_every=''):

"""

:param type_id: <str>

:param name: <str>

:param title: <str>

:param units: <str>

:param family: <str>

:param category: <str>

:param chart_type: <str>

:param priority: <str> or <int>

:param update_every: <str> or <int>

:return:

"""

self._data_stream += CHART_CREATE.format(type_id, name, title, units,

family, category, chart_type,

priority, update_every)

def dimension(self, dim_id, name=None, algorithm="absolute", multiplier=1, divisor=1, hidden=False):

"""

:param dim_id: <str>

:param name: <str> or None

:param algorithm: <str>

:param multiplier: <str> or <int>: must be a digit

:param divisor: <str> or <int>: must be a digit

:param hidden: <str>: literally "hidden" or ""

:return:

"""

self._data_stream += DIMENSION_CREATE.format(dim_id, name or dim_id, algorithm,

multiplier, divisor, hidden or str())

@on_try_except_finally(on_except=(exit, 1))

def commit(self):

print(self._data_stream)

self._data_stream = str()

netdata/python.d/python_modules/bases/collection.py at master · chengfangang/netdata · GitHub

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