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# -*- coding: utf-8 -*- |
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__author__ = 'Kenny Freeman' |
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__email__ = '[email protected]' |
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__license__ = "ISCL" |
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__docformat__ = 'reStructuredText' |
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import time |
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import traceback |
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import plumd |
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import plumd.plugins |
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from plumd.calc import Differential |
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from plumd.util import get_file_map, Filter |
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class NetDev(plumd.plugins.Reader): |
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"""Plugin to measure various kernel metrics from /proc.""" |
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defaults = { |
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'poll.interval': 10, |
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'proc_path': '/proc', |
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'net_dev_re': "(virbr\d+)|(vnet\d+)", # not used atm |
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'net_dev_devs': ["eth0", "eth1", "bond0", "bond1", "lo"], |
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'net_dev_cols': ["rx_bytes", "rx_pkt", "rx_errs", "rx_drop", |
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"rx_fifo_errs", "rx_frame_errs", "rx_compressed", |
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"rx_mcast", "tx_bytes", "tx_pkt", "tx_errs", "tx_drop", |
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"tx_fifo_errs", "collissions", "carrier", |
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"tx_compressed"] |
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} |
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def __init__(self, log, config): |
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"""Plugin to measure network interface metrics from proc file net/dev. |
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:param log: A logger |
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:type log: logging.RootLogger |
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:param config: a plumd.config.Conf configuration helper instance. |
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:type config: plumd.config.Conf |
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""" |
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super(NetDev, self).__init__(log, config) |
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config.defaults(NetDev.defaults) |
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self.proc_file = "{0}/net/dev".format(config.get('proc_path')) |
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self.net_dev_cols = config.get('net_dev_cols') |
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self.net_dev_devs = config.get('net_dev_devs') |
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self.filter = Filter() |
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self.calc = Differential() |
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def poll(self): |
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"""Return network interface metrics from proc file net/dev. |
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:rtype: ResultSet |
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""" |
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return plumd.ResultSet(self.check()) |
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def check(self): |
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"""Return network interface metrics from proc file net/dev. |
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:rtype: list |
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""" |
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result = plumd.Result("net") |
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dat = {} |
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cols = self.net_dev_cols |
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devs = self.net_dev_devs |
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# read and process /proc/stat |
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try: |
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dat = get_file_map(self.proc_file, 0, 0) |
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except Exception as e: |
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tb = traceback.format_exc() |
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self.log.error("proc_net_dev: exception: {0}: {1}".format(e, tb)) |
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return [result] |
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ts = time.time() |
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for key, val in dat.items(): |
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key = self.filter.process(key) |
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if key not in devs: |
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continue |
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for mname in cols: |
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if len(val) < 1: |
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break |
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mval = int(val.popleft()) |
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mstr = "{0}.{1}".format(key, mname) |
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dval = self.calc.per_second(mstr, mval, ts) |
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result.add(plumd.Int(mstr, dval)) |
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return [result] |
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s4z /
plumd
