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| 1 | +// Copyright 2022 The Prometheus Authors |
| 2 | +// Licensed under the Apache License, Version 2.0 (the "License"); |
| 3 | +// you may not use this file except in compliance with the License. |
| 4 | +// You may obtain a copy of the License at |
| 5 | +// |
| 6 | +// http://www.apache.org/licenses/LICENSE-2.0 |
| 7 | +// |
| 8 | +// Unless required by applicable law or agreed to in writing, software |
| 9 | +// distributed under the License is distributed on an "AS IS" BASIS, |
| 10 | +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 11 | +// See the License for the specific language governing permissions and |
| 12 | +// limitations under the License. |
| 13 | + |
| 14 | +package procfs |
| 15 | + |
| 16 | +import ( |
| 17 | + "bufio" |
| 18 | + "bytes" |
| 19 | + "fmt" |
| 20 | + "io" |
| 21 | + "strconv" |
| 22 | + "strings" |
| 23 | + |
| 24 | + "github.com/mitchellh/mapstructure" |
| 25 | + "github.com/prometheus/procfs/internal/util" |
| 26 | +) |
| 27 | + |
| 28 | +// ProcNetstat models the content of /proc/<pid>/net/netstat. |
| 29 | +type ProcNetstat struct { |
| 30 | + // The process ID. |
| 31 | + PID int |
| 32 | + TcpExt |
| 33 | + IpExt |
| 34 | +} |
| 35 | + |
| 36 | +type TcpExt struct { |
| 37 | + SyncookiesSent float64 |
| 38 | + SyncookiesRecv float64 |
| 39 | + SyncookiesFailed float64 |
| 40 | + EmbryonicRsts float64 |
| 41 | + PruneCalled float64 |
| 42 | + RcvPruned float64 |
| 43 | + OfoPruned float64 |
| 44 | + OutOfWindowIcmps float64 |
| 45 | + LockDroppedIcmps float64 |
| 46 | + ArpFilter float64 |
| 47 | + TW float64 |
| 48 | + TWRecycled float64 |
| 49 | + TWKilled float64 |
| 50 | + PAWSActive float64 |
| 51 | + PAWSEstab float64 |
| 52 | + DelayedACKs float64 |
| 53 | + DelayedACKLocked float64 |
| 54 | + DelayedACKLost float64 |
| 55 | + ListenOverflows float64 |
| 56 | + ListenDrops float64 |
| 57 | + TCPHPHits float64 |
| 58 | + TCPPureAcks float64 |
| 59 | + TCPHPAcks float64 |
| 60 | + TCPRenoRecovery float64 |
| 61 | + TCPSackRecovery float64 |
| 62 | + TCPSACKReneging float64 |
| 63 | + TCPSACKReorder float64 |
| 64 | + TCPRenoReorder float64 |
| 65 | + TCPTSReorder float64 |
| 66 | + TCPFullUndo float64 |
| 67 | + TCPPartialUndo float64 |
| 68 | + TCPDSACKUndo float64 |
| 69 | + TCPLossUndo float64 |
| 70 | + TCPLostRetransmit float64 |
| 71 | + TCPRenoFailures float64 |
| 72 | + TCPSackFailures float64 |
| 73 | + TCPLossFailures float64 |
| 74 | + TCPFastRetrans float64 |
| 75 | + TCPSlowStartRetrans float64 |
| 76 | + TCPTimeouts float64 |
| 77 | + TCPLossProbes float64 |
| 78 | + TCPLossProbeRecovery float64 |
| 79 | + TCPRenoRecoveryFail float64 |
| 80 | + TCPSackRecoveryFail float64 |
| 81 | + TCPRcvCollapsed float64 |
| 82 | + TCPDSACKOldSent float64 |
| 83 | + TCPDSACKOfoSent float64 |
| 84 | + TCPDSACKRecv float64 |
| 85 | + TCPDSACKOfoRecv float64 |
| 86 | + TCPAbortOnData float64 |
| 87 | + TCPAbortOnClose float64 |
| 88 | + TCPAbortOnMemory float64 |
| 89 | + TCPAbortOnTimeout float64 |
| 90 | + TCPAbortOnLinger float64 |
| 91 | + TCPAbortFailed float64 |
| 92 | + TCPMemoryPressures float64 |
| 93 | + TCPMemoryPressuresChrono float64 |
| 94 | + TCPSACKDiscard float64 |
| 95 | + TCPDSACKIgnoredOld float64 |
| 96 | + TCPDSACKIgnoredNoUndo float64 |
| 97 | + TCPSpuriousRTOs float64 |
| 98 | + TCPMD5NotFound float64 |
| 99 | + TCPMD5Unexpected float64 |
| 100 | + TCPMD5Failure float64 |
| 101 | + TCPSackShifted float64 |
| 102 | + TCPSackMerged float64 |
| 103 | + TCPSackShiftFallback float64 |
| 104 | + TCPBacklogDrop float64 |
| 105 | + PFMemallocDrop float64 |
| 106 | + TCPMinTTLDrop float64 |
| 107 | + TCPDeferAcceptDrop float64 |
| 108 | + IPReversePathFilter float64 |
| 109 | + TCPTimeWaitOverflow float64 |
| 110 | + TCPReqQFullDoCookies float64 |
| 111 | + TCPReqQFullDrop float64 |
| 112 | + TCPRetransFail float64 |
| 113 | + TCPRcvCoalesce float64 |
| 114 | + TCPOFOQueue float64 |
| 115 | + TCPOFODrop float64 |
| 116 | + TCPOFOMerge float64 |
| 117 | + TCPChallengeACK float64 |
| 118 | + TCPSYNChallenge float64 |
| 119 | + TCPFastOpenActive float64 |
| 120 | + TCPFastOpenActiveFail float64 |
| 121 | + TCPFastOpenPassive float64 |
| 122 | + TCPFastOpenPassiveFail float64 |
| 123 | + TCPFastOpenListenOverflow float64 |
| 124 | + TCPFastOpenCookieReqd float64 |
| 125 | + TCPFastOpenBlackhole float64 |
| 126 | + TCPSpuriousRtxHostQueues float64 |
| 127 | + BusyPollRxPackets float64 |
| 128 | + TCPAutoCorking float64 |
| 129 | + TCPFromZeroWindowAdv float64 |
| 130 | + TCPToZeroWindowAdv float64 |
| 131 | + TCPWantZeroWindowAdv float64 |
| 132 | + TCPSynRetrans float64 |
| 133 | + TCPOrigDataSent float64 |
| 134 | + TCPHystartTrainDetect float64 |
| 135 | + TCPHystartTrainCwnd float64 |
| 136 | + TCPHystartDelayDetect float64 |
| 137 | + TCPHystartDelayCwnd float64 |
| 138 | + TCPACKSkippedSynRecv float64 |
| 139 | + TCPACKSkippedPAWS float64 |
| 140 | + TCPACKSkippedSeq float64 |
| 141 | + TCPACKSkippedFinWait2 float64 |
| 142 | + TCPACKSkippedTimeWait float64 |
| 143 | + TCPACKSkippedChallenge float64 |
| 144 | + TCPWinProbe float64 |
| 145 | + TCPKeepAlive float64 |
| 146 | + TCPMTUPFail float64 |
| 147 | + TCPMTUPSuccess float64 |
| 148 | + TCPWqueueTooBig float64 |
| 149 | +} |
| 150 | + |
| 151 | +type IpExt struct { |
| 152 | + InNoRoutes float64 |
| 153 | + InTruncatedPkts float64 |
| 154 | + InMcastPkts float64 |
| 155 | + OutMcastPkts float64 |
| 156 | + InBcastPkts float64 |
| 157 | + OutBcastPkts float64 |
| 158 | + InOctets float64 |
| 159 | + OutOctets float64 |
| 160 | + InMcastOctets float64 |
| 161 | + OutMcastOctets float64 |
| 162 | + InBcastOctets float64 |
| 163 | + OutBcastOctets float64 |
| 164 | + InCsumErrors float64 |
| 165 | + InNoECTPkts float64 |
| 166 | + InECT1Pkts float64 |
| 167 | + InECT0Pkts float64 |
| 168 | + InCEPkts float64 |
| 169 | + ReasmOverlaps float64 |
| 170 | +} |
| 171 | + |
| 172 | +func (p Proc) Netstat() (ProcNetstat, error) { |
| 173 | + filename := p.path("net/netstat") |
| 174 | + procNetstat := ProcNetstat{PID: p.PID} |
| 175 | + |
| 176 | + data, err := util.ReadFileNoStat(filename) |
| 177 | + if err != nil { |
| 178 | + return procNetstat, err |
| 179 | + } |
| 180 | + |
| 181 | + netStats, err := parseNetstat(bytes.NewReader(data), filename) |
| 182 | + if err != nil { |
| 183 | + return procNetstat, err |
| 184 | + } |
| 185 | + |
| 186 | + mapStructureErr := mapstructure.Decode(netStats, &procNetstat) |
| 187 | + if mapStructureErr != nil { |
| 188 | + return procNetstat, mapStructureErr |
| 189 | + } |
| 190 | + |
| 191 | + return procNetstat, nil |
| 192 | +} |
| 193 | + |
| 194 | +// parseNetstat parses the metrics from proc/<pid>/net/netstat file |
| 195 | +// and returns a map contains those metrics (e.g. {"TcpExt": {"SyncookiesSent": 0}}). |
| 196 | +func parseNetstat(r io.Reader, fileName string) (map[string]map[string]float64, error) { |
| 197 | + var ( |
| 198 | + netStats = map[string]map[string]float64{} |
| 199 | + scanner = bufio.NewScanner(r) |
| 200 | + ) |
| 201 | + |
| 202 | + for scanner.Scan() { |
| 203 | + nameParts := strings.Split(scanner.Text(), " ") |
| 204 | + scanner.Scan() |
| 205 | + valueParts := strings.Split(scanner.Text(), " ") |
| 206 | + // Remove trailing :. |
| 207 | + protocol := nameParts[0][:len(nameParts[0])-1] |
| 208 | + netStats[protocol] = map[string]float64{} |
| 209 | + if len(nameParts) != len(valueParts) { |
| 210 | + return nil, fmt.Errorf("mismatch field count mismatch in %s: %s", |
| 211 | + fileName, protocol) |
| 212 | + } |
| 213 | + for i := 1; i < len(nameParts); i++ { |
| 214 | + var err error |
| 215 | + netStats[protocol][nameParts[i]], err = strconv.ParseFloat(valueParts[i], 64) |
| 216 | + if err != nil { |
| 217 | + return nil, err |
| 218 | + } |
| 219 | + } |
| 220 | + } |
| 221 | + |
| 222 | + return netStats, scanner.Err() |
| 223 | +} |
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