// Copyright 2022 The Prometheus Authors // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. package procfs import ( "bufio" "bytes" "fmt" "io" "strconv" "strings" "github.com/prometheus/procfs/internal/util" ) // ProcSnmp models the content of /proc//net/snmp. type ProcSnmp struct { // The process ID. PID int Ip Icmp IcmpMsg Tcp Udp UdpLite } type Ip struct { // nolint:revive Forwarding float64 DefaultTTL float64 InReceives float64 InHdrErrors float64 InAddrErrors float64 ForwDatagrams float64 InUnknownProtos float64 InDiscards float64 InDelivers float64 OutRequests float64 OutDiscards float64 OutNoRoutes float64 ReasmTimeout float64 ReasmReqds float64 ReasmOKs float64 ReasmFails float64 FragOKs float64 FragFails float64 FragCreates float64 } type Icmp struct { InMsgs float64 InErrors float64 InCsumErrors float64 InDestUnreachs float64 InTimeExcds float64 InParmProbs float64 InSrcQuenchs float64 InRedirects float64 InEchos float64 InEchoReps float64 InTimestamps float64 InTimestampReps float64 InAddrMasks float64 InAddrMaskReps float64 OutMsgs float64 OutErrors float64 OutDestUnreachs float64 OutTimeExcds float64 OutParmProbs float64 OutSrcQuenchs float64 OutRedirects float64 OutEchos float64 OutEchoReps float64 OutTimestamps float64 OutTimestampReps float64 OutAddrMasks float64 OutAddrMaskReps float64 } type IcmpMsg struct { InType3 float64 OutType3 float64 } type Tcp struct { // nolint:revive RtoAlgorithm float64 RtoMin float64 RtoMax float64 MaxConn float64 ActiveOpens float64 PassiveOpens float64 AttemptFails float64 EstabResets float64 CurrEstab float64 InSegs float64 OutSegs float64 RetransSegs float64 InErrs float64 OutRsts float64 InCsumErrors float64 } type Udp struct { // nolint:revive InDatagrams float64 NoPorts float64 InErrors float64 OutDatagrams float64 RcvbufErrors float64 SndbufErrors float64 InCsumErrors float64 IgnoredMulti float64 } type UdpLite struct { // nolint:revive InDatagrams float64 NoPorts float64 InErrors float64 OutDatagrams float64 RcvbufErrors float64 SndbufErrors float64 InCsumErrors float64 IgnoredMulti float64 } func (p Proc) Snmp() (ProcSnmp, error) { filename := p.path("net/snmp") data, err := util.ReadFileNoStat(filename) if err != nil { return ProcSnmp{PID: p.PID}, err } procSnmp, err := parseSnmp(bytes.NewReader(data), filename) procSnmp.PID = p.PID return procSnmp, err } // parseSnmp parses the metrics from proc//net/snmp file // and returns a map contains those metrics (e.g. {"Ip": {"Forwarding": 2}}). func parseSnmp(r io.Reader, fileName string) (ProcSnmp, error) { var ( scanner = bufio.NewScanner(r) procSnmp = ProcSnmp{} ) for scanner.Scan() { nameParts := strings.Split(scanner.Text(), " ") scanner.Scan() valueParts := strings.Split(scanner.Text(), " ") // Remove trailing :. protocol := strings.TrimSuffix(nameParts[0], ":") if len(nameParts) != len(valueParts) { return procSnmp, fmt.Errorf("mismatch field count mismatch in %s: %s", fileName, protocol) } for i := 1; i < len(nameParts); i++ { value, err := strconv.ParseFloat(valueParts[i], 64) if err != nil { return procSnmp, err } key := nameParts[i] switch protocol { case "Ip": switch key { case "Forwarding": procSnmp.Ip.Forwarding = value case "DefaultTTL": procSnmp.Ip.DefaultTTL = value case "InReceives": procSnmp.Ip.InReceives = value case "InHdrErrors": procSnmp.Ip.InHdrErrors = value case "InAddrErrors": procSnmp.Ip.InAddrErrors = value case "ForwDatagrams": procSnmp.Ip.ForwDatagrams = value case "InUnknownProtos": procSnmp.Ip.InUnknownProtos = value case "InDiscards": procSnmp.Ip.InDiscards = value case "InDelivers": procSnmp.Ip.InDelivers = value case "OutRequests": procSnmp.Ip.OutRequests = value case "OutDiscards": procSnmp.Ip.OutDiscards = value case "OutNoRoutes": procSnmp.Ip.OutNoRoutes = value case "ReasmTimeout": procSnmp.Ip.ReasmTimeout = value case "ReasmReqds": procSnmp.Ip.ReasmReqds = value case "ReasmOKs": procSnmp.Ip.ReasmOKs = value case "ReasmFails": procSnmp.Ip.ReasmFails = value case "FragOKs": procSnmp.Ip.FragOKs = value case "FragFails": procSnmp.Ip.FragFails = value case "FragCreates": procSnmp.Ip.FragCreates = value } case "Icmp": switch key { case "InMsgs": procSnmp.Icmp.InMsgs = value case "InErrors": procSnmp.Icmp.InErrors = value case "InCsumErrors": procSnmp.Icmp.InCsumErrors = value case "InDestUnreachs": procSnmp.Icmp.InDestUnreachs = value case "InTimeExcds": procSnmp.Icmp.InTimeExcds = value case "InParmProbs": procSnmp.Icmp.InParmProbs = value case "InSrcQuenchs": procSnmp.Icmp.InSrcQuenchs = value case "InRedirects": procSnmp.Icmp.InRedirects = value case "InEchos": procSnmp.Icmp.InEchos = value case "InEchoReps": procSnmp.Icmp.InEchoReps = value case "InTimestamps": procSnmp.Icmp.InTimestamps = value case "InTimestampReps": procSnmp.Icmp.InTimestampReps = value case "InAddrMasks": procSnmp.Icmp.InAddrMasks = value case "InAddrMaskReps": procSnmp.Icmp.InAddrMaskReps = value case "OutMsgs": procSnmp.Icmp.OutMsgs = value case "OutErrors": procSnmp.Icmp.OutErrors = value case "OutDestUnreachs": procSnmp.Icmp.OutDestUnreachs = value case "OutTimeExcds": procSnmp.Icmp.OutTimeExcds = value case "OutParmProbs": procSnmp.Icmp.OutParmProbs = value case "OutSrcQuenchs": procSnmp.Icmp.OutSrcQuenchs = value case "OutRedirects": procSnmp.Icmp.OutRedirects = value case "OutEchos": procSnmp.Icmp.OutEchos = value case "OutEchoReps": procSnmp.Icmp.OutEchoReps = value case "OutTimestamps": procSnmp.Icmp.OutTimestamps = value case "OutTimestampReps": procSnmp.Icmp.OutTimestampReps = value case "OutAddrMasks": procSnmp.Icmp.OutAddrMasks = value case "OutAddrMaskReps": procSnmp.Icmp.OutAddrMaskReps = value } case "IcmpMsg": switch key { case "InType3": procSnmp.IcmpMsg.InType3 = value case "OutType3": procSnmp.IcmpMsg.OutType3 = value } case "Tcp": switch key { case "RtoAlgorithm": procSnmp.Tcp.RtoAlgorithm = value case "RtoMin": procSnmp.Tcp.RtoMin = value case "RtoMax": procSnmp.Tcp.RtoMax = value case "MaxConn": procSnmp.Tcp.MaxConn = value case "ActiveOpens": procSnmp.Tcp.ActiveOpens = value case "PassiveOpens": procSnmp.Tcp.PassiveOpens = value case "AttemptFails": procSnmp.Tcp.AttemptFails = value case "EstabResets": procSnmp.Tcp.EstabResets = value case "CurrEstab": procSnmp.Tcp.CurrEstab = value case "InSegs": procSnmp.Tcp.InSegs = value case "OutSegs": procSnmp.Tcp.OutSegs = value case "RetransSegs": procSnmp.Tcp.RetransSegs = value case "InErrs": procSnmp.Tcp.InErrs = value case "OutRsts": procSnmp.Tcp.OutRsts = value case "InCsumErrors": procSnmp.Tcp.InCsumErrors = value } case "Udp": switch key { case "InDatagrams": procSnmp.Udp.InDatagrams = value case "NoPorts": procSnmp.Udp.NoPorts = value case "InErrors": procSnmp.Udp.InErrors = value case "OutDatagrams": procSnmp.Udp.OutDatagrams = value case "RcvbufErrors": procSnmp.Udp.RcvbufErrors = value case "SndbufErrors": procSnmp.Udp.SndbufErrors = value case "InCsumErrors": procSnmp.Udp.InCsumErrors = value case "IgnoredMulti": procSnmp.Udp.IgnoredMulti = value } case "UdpLite": switch key { case "InDatagrams": procSnmp.UdpLite.InDatagrams = value case "NoPorts": procSnmp.UdpLite.NoPorts = value case "InErrors": procSnmp.UdpLite.InErrors = value case "OutDatagrams": procSnmp.UdpLite.OutDatagrams = value case "RcvbufErrors": procSnmp.UdpLite.RcvbufErrors = value case "SndbufErrors": procSnmp.UdpLite.SndbufErrors = value case "InCsumErrors": procSnmp.UdpLite.InCsumErrors = value case "IgnoredMulti": procSnmp.UdpLite.IgnoredMulti = value } } } } return procSnmp, scanner.Err() }