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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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from collections import deque |
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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_list, Filter |
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class Netstat(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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'skip_proc_net_netstat': ["TcpExt.ArpFilter","TcpExt.BusyPollRxPackets", |
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"TcpExt.DelayedACKLocked","TcpExt.DelayedACKLost", |
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"TcpExt.DelayedACKs","TcpExt.EmbryonicRsts", |
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"TcpExt.IPReversePathFilter","TcpExt.LockDroppedIcmps", |
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"TcpExt.OfoPruned","TcpExt.OutOfWindowIcmps", |
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"TcpExt.PAWSActive","TcpExt.PAWSEstab", "TcpExt.PAWSPassive", |
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"TcpExt.PruneCalled","TcpExt.RcvPruned", |
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"TcpExt.TCPACKSkippedChallenge","TcpExt.TCPACKSkippedFinWait2", |
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"TcpExt.TCPACKSkippedPAWS","TcpExt.TCPACKSkippedSeq", |
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"TcpExt.TCPACKSkippedSynRecv","TcpExt.TCPACKSkippedTimeWait", |
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"TcpExt.TCPAutoCorking","TcpExt.TCPChallengeACK", |
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"TcpExt.TCPDirectCopyFromBacklog","TcpExt.TCPDirectCopyFromPrequeue", |
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"TcpExt.TCPDSACKIgnoredNoUndo","TcpExt.TCPDSACKIgnoredOld", |
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"TcpExt.TCPDSACKOfoRecv","TcpExt.TCPDSACKOfoSent", |
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"TcpExt.TCPDSACKOldSent","TcpExt.TCPDSACKRecv","TcpExt.TCPDSACKUndo", |
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"TcpExt.TCPFACKReorder","TcpExt.TCPFromZeroWindowAdv", |
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"TcpExt.TCPFullUndo","TcpExt.TCPHPAcks","TcpExt.TCPHPHits", |
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"TcpExt.TCPHPHitsToUser","TcpExt.TCPHystartDelayCwnd", |
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"TcpExt.TCPHystartDelayDetect","TcpExt.TCPHystartTrainCwnd", |
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"TcpExt.TCPHystartTrainDetect","TcpExt.TCPLossFailures", |
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"TcpExt.TCPLossProbeRecovery","TcpExt.TCPLossProbes", |
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"TcpExt.TCPLossUndo","TcpExt.TCPLostRetransmit", |
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"TcpExt.TCPMD5NotFound","TcpExt.TCPMD5Unexpected", |
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"TcpExt.TCPMTUPFail","TcpExt.TCPMTUPSuccess","TcpExt.TCPOFODrop", |
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"TcpExt.TCPOFOMerge","TcpExt.TCPOFOQueue","TcpExt.TCPOrigDataSent", |
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"TcpExt.TCPPartialUndo","TcpExt.TCPPrequeued", |
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"TcpExt.TCPPrequeueDropped","TcpExt.TCPPureAcks", |
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"TcpExt.TCPRcvCoalesce","TcpExt.TCPRcvCollapsed", |
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"TcpExt.TCPRenoFailures","TcpExt.TCPRenoRecovery", |
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"TcpExt.TCPRenoRecoveryFail","TcpExt.TCPRenoReorder", |
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"TcpExt.TCPRetransFail","TcpExt.TCPSACKDiscard", |
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"TcpExt.TCPSackFailures","TcpExt.TCPSackMerged", |
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"TcpExt.TCPSackRecovery","TcpExt.TCPSackRecoveryFail", |
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"TcpExt.TCPSACKReneging","TcpExt.TCPSACKReorder", |
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"TcpExt.TCPSackShifted","TcpExt.TCPSackShiftFallback", |
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"TcpExt.TCPSchedulerFailed","TcpExt.TCPSpuriousRTOs", |
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"TcpExt.TCPSpuriousRtxHostQueues","TcpExt.TCPSYNChallenge", |
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"TcpExt.TCPToZeroWindowAdv","TcpExt.TCPTSReorder", |
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"TcpExt.TCPWantZeroWindowAdv","TcpExt.TCPWinProbe", |
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"TcpExt.TCPKeepAlive", "TcpExt.TCPFastOpenCookieReqd", |
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"IpExt.InNoECTPkts", "IpExt.InCEPkts"] |
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} |
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def __init__(self, log, config): |
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"""Plugin to measure various kernel metrics from /proc. |
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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(Netstat, self).__init__(log, config) |
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config.defaults(Netstat.defaults) |
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self.calc = Differential() |
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self.proc_file = "{0}/net/netstat".format(config.get('proc_path')) |
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self.filter = Filter() |
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def poll(self): |
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"""Poll for kernel metrics under proc file net/netstat. |
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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 detailed network statitistics proc file net/netstat. |
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Note: add entries to the configuration value 'skip_proc_net_netstat' to |
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skip metric names (eg. 'TcpExt.TCPMTUPSuccess'). Defaults should be |
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reasonable however. |
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Note: ECT1Pkts and ECT0Pkts relate to ECT congestion notifications. |
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:rtype: plumd.Result |
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""" |
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skip = self.config.get('skip_proc_net_netstat') |
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result = plumd.Result("netstat") |
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dat = {} |
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# read and process - dat is a list of lines from fname |
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dat = get_file_list(self.proc_file) |
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ts = time.time() |
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while len(dat) > 1: |
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headers = deque(dat.popleft().split()) |
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if len(dat) < 1 or len(headers) < 1: |
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break |
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mvals = deque([ int(i) for i in dat.popleft().split()[1:] ]) |
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mstr = self.filter.process(headers.popleft()) # eg. TcpExt: |
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for mname in headers: |
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metric = "{0}.{1}".format(mstr, mname) |
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if metric in skip: # todo: make this fast |
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continue |
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dval = self.calc.per_second(metric, mvals.popleft(), ts) |
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result.add(plumd.Int(metric, dval)) |
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return [result] |
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s4z /
plumd
