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Introduce parsing for
/proc/<pid>/net/snmp.
Signed-off-by: Nikos Kakavas <nikakis@protonmail.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1 +1,2 @@ | ||
| /fixtures/ | ||
| .idea |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,187 @@ | ||
| // 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" | ||
| "fmt" | ||
| "github.com/mitchellh/mapstructure" | ||
| "io" | ||
| "os" | ||
| "strconv" | ||
| "strings" | ||
| ) | ||
|
|
||
| // ProcSnmp models the content of /proc/<pid>/net/snmp. | ||
| type ProcSnmp struct { | ||
| // The process ID. | ||
| PID int | ||
| Ip | ||
| Icmp | ||
| IcmpMsg | ||
| Tcp | ||
| Udp | ||
| UdpLite | ||
| } | ||
|
|
||
| type Ip struct { | ||
| 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 | ||
| } | ||
|
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| type IcmpMsg struct { | ||
| InType3 float64 | ||
| OutType3 float64 | ||
| } | ||
|
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| type Tcp struct { | ||
| 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 | ||
| } | ||
|
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| type Udp struct { | ||
| InDatagrams float64 | ||
| NoPorts float64 | ||
| InErrors float64 | ||
| OutDatagrams float64 | ||
| RcvbufErrors float64 | ||
| SndbufErrors float64 | ||
| InCsumErrors float64 | ||
| IgnoredMulti float64 | ||
| } | ||
|
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| type UdpLite struct { | ||
| InDatagrams float64 | ||
| NoPorts float64 | ||
| InErrors float64 | ||
| OutDatagrams float64 | ||
| RcvbufErrors float64 | ||
| SndbufErrors float64 | ||
| InCsumErrors float64 | ||
| IgnoredMulti float64 | ||
| } | ||
|
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| func (p Proc) Snmp() (ProcSnmp, error) { | ||
| filename := p.path("net/snmp") | ||
| procSnmp := ProcSnmp{PID: p.PID} | ||
|
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| file, err := os.Open(filename) | ||
| if err != nil { | ||
| return procSnmp, err | ||
| } | ||
| defer file.Close() | ||
|
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| netStats, err := parseNetStats(file, filename) | ||
| if err != nil { | ||
| return procSnmp, err | ||
| } | ||
|
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| mapStructureErr := mapstructure.Decode(netStats, &procSnmp) | ||
| if mapStructureErr != nil { | ||
| return procSnmp, mapStructureErr | ||
| } | ||
|
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| return procSnmp, nil | ||
| } | ||
|
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| // parseSnmp parses the metrics from proc/<pid>/net/snmp file | ||
| // and returns a map contains those metrics (e.g. {"Ip": {"Forwarding": 2}} | ||
| func parseNetStats(r io.Reader, fileName string) (map[string]map[string]float64, error) { | ||
| var ( | ||
| netStats = map[string]map[string]float64{} | ||
| scanner = bufio.NewScanner(r) | ||
| ) | ||
|
|
||
| for scanner.Scan() { | ||
| nameParts := strings.Split(scanner.Text(), " ") | ||
| scanner.Scan() | ||
| valueParts := strings.Split(scanner.Text(), " ") | ||
| // Remove trailing :. | ||
| protocol := nameParts[0][:len(nameParts[0])-1] | ||
| netStats[protocol] = map[string]float64{} | ||
| if len(nameParts) != len(valueParts) { | ||
| return nil, fmt.Errorf("mismatch field count mismatch in %s: %s", | ||
| fileName, protocol) | ||
| } | ||
| for i := 1; i < len(nameParts); i++ { | ||
| var err error | ||
| netStats[protocol][nameParts[i]], err = strconv.ParseFloat(valueParts[i], 64) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| } | ||
| } | ||
|
|
||
| return netStats, scanner.Err() | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,52 @@ | ||
| // 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. | ||
|
|
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| package procfs | ||
|
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| import "testing" | ||
|
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| func TestProcSnmp(t *testing.T) { | ||
| p, err := getProcFixtures(t).Proc(26231) | ||
| if err != nil { | ||
| t.Fatal(err) | ||
| } | ||
|
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| procSnmp, err := p.Snmp() | ||
| if err != nil { | ||
| t.Fatal(err) | ||
| } | ||
|
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| for _, test := range []struct { | ||
| name string | ||
| want float64 | ||
| have float64 | ||
| }{ | ||
| {name: "pid", want: 26231, have: float64(procSnmp.PID)}, | ||
| {name: "IP:Forwarding", want: 2, have: procSnmp.Ip.Forwarding}, | ||
| {name: "IP:DefaultTTL", want: 64, have: procSnmp.Ip.DefaultTTL}, | ||
| {name: "Icmp:InMsgs", want: 45, have: procSnmp.Icmp.InMsgs}, | ||
| {name: "IcmpMsg:InType3", want: 45, have: procSnmp.IcmpMsg.InType3}, | ||
| {name: "IcmpMsg:OutType3", want: 50, have: procSnmp.IcmpMsg.OutType3}, | ||
| {name: "TCP:RtoAlgorithm", want: 1, have: procSnmp.Tcp.RtoAlgorithm}, | ||
| {name: "TCP:RtoMin", want: 200, have: procSnmp.Tcp.RtoMin}, | ||
| {name: "Udp:InDatagrams", want: 10179, have: procSnmp.Udp.InDatagrams}, | ||
| {name: "Udp:NoPorts", want: 50, have: procSnmp.Udp.NoPorts}, | ||
| {name: "UdpLite:InDatagrams", want: 0, have: procSnmp.UdpLite.NoPorts}, | ||
| {name: "UdpLite:NoPorts", want: 0, have: procSnmp.UdpLite.NoPorts}, | ||
| } { | ||
| if test.want != test.have { | ||
| t.Errorf("want %s %f, have %f", test.name, test.want, test.have) | ||
| } | ||
| } | ||
|
|
||
| } |