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https://github.com/rancher/norman.git
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Add Generic Controller Related Metrics
To enhance operatability for the service using norman framework, It's better to expose internal state as detail as possible. This is the just starting point but at least which handler is executed often and which handler with which key's execution is often failed metrics is very useful to spot the place operator have to dig in when something happened. So this commit added 2 metrics. 1: handler execution total count 2: handler execution failure total count
This commit is contained in:
Yuki Nishiwaki
216
vendor/github.com/prometheus/procfs/net_dev.go
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vendor/github.com/prometheus/procfs/net_dev.go
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// Copyright 2018 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package procfs
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import (
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"bufio"
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"errors"
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"os"
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"sort"
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"strconv"
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"strings"
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)
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// NetDevLine is single line parsed from /proc/net/dev or /proc/[pid]/net/dev.
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type NetDevLine struct {
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Name string `json:"name"` // The name of the interface.
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RxBytes uint64 `json:"rx_bytes"` // Cumulative count of bytes received.
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RxPackets uint64 `json:"rx_packets"` // Cumulative count of packets received.
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RxErrors uint64 `json:"rx_errors"` // Cumulative count of receive errors encountered.
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RxDropped uint64 `json:"rx_dropped"` // Cumulative count of packets dropped while receiving.
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RxFIFO uint64 `json:"rx_fifo"` // Cumulative count of FIFO buffer errors.
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RxFrame uint64 `json:"rx_frame"` // Cumulative count of packet framing errors.
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RxCompressed uint64 `json:"rx_compressed"` // Cumulative count of compressed packets received by the device driver.
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RxMulticast uint64 `json:"rx_multicast"` // Cumulative count of multicast frames received by the device driver.
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TxBytes uint64 `json:"tx_bytes"` // Cumulative count of bytes transmitted.
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TxPackets uint64 `json:"tx_packets"` // Cumulative count of packets transmitted.
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TxErrors uint64 `json:"tx_errors"` // Cumulative count of transmit errors encountered.
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TxDropped uint64 `json:"tx_dropped"` // Cumulative count of packets dropped while transmitting.
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TxFIFO uint64 `json:"tx_fifo"` // Cumulative count of FIFO buffer errors.
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TxCollisions uint64 `json:"tx_collisions"` // Cumulative count of collisions detected on the interface.
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TxCarrier uint64 `json:"tx_carrier"` // Cumulative count of carrier losses detected by the device driver.
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TxCompressed uint64 `json:"tx_compressed"` // Cumulative count of compressed packets transmitted by the device driver.
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}
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// NetDev is parsed from /proc/net/dev or /proc/[pid]/net/dev. The map keys
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// are interface names.
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type NetDev map[string]NetDevLine
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// NewNetDev returns kernel/system statistics read from /proc/net/dev.
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func NewNetDev() (NetDev, error) {
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fs, err := NewFS(DefaultMountPoint)
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if err != nil {
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return nil, err
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}
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return fs.NewNetDev()
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}
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// NewNetDev returns kernel/system statistics read from /proc/net/dev.
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func (fs FS) NewNetDev() (NetDev, error) {
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return newNetDev(fs.Path("net/dev"))
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}
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// NewNetDev returns kernel/system statistics read from /proc/[pid]/net/dev.
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func (p Proc) NewNetDev() (NetDev, error) {
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return newNetDev(p.path("net/dev"))
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}
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// newNetDev creates a new NetDev from the contents of the given file.
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func newNetDev(file string) (NetDev, error) {
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f, err := os.Open(file)
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if err != nil {
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return NetDev{}, err
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}
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defer f.Close()
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nd := NetDev{}
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s := bufio.NewScanner(f)
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for n := 0; s.Scan(); n++ {
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// Skip the 2 header lines.
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if n < 2 {
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continue
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}
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line, err := nd.parseLine(s.Text())
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if err != nil {
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return nd, err
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}
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nd[line.Name] = *line
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}
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return nd, s.Err()
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}
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// parseLine parses a single line from the /proc/net/dev file. Header lines
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// must be filtered prior to calling this method.
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func (nd NetDev) parseLine(rawLine string) (*NetDevLine, error) {
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parts := strings.SplitN(rawLine, ":", 2)
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if len(parts) != 2 {
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return nil, errors.New("invalid net/dev line, missing colon")
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}
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fields := strings.Fields(strings.TrimSpace(parts[1]))
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var err error
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line := &NetDevLine{}
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// Interface Name
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line.Name = strings.TrimSpace(parts[0])
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if line.Name == "" {
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return nil, errors.New("invalid net/dev line, empty interface name")
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}
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// RX
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line.RxBytes, err = strconv.ParseUint(fields[0], 10, 64)
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if err != nil {
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return nil, err
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}
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line.RxPackets, err = strconv.ParseUint(fields[1], 10, 64)
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if err != nil {
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return nil, err
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}
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line.RxErrors, err = strconv.ParseUint(fields[2], 10, 64)
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if err != nil {
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return nil, err
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}
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line.RxDropped, err = strconv.ParseUint(fields[3], 10, 64)
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if err != nil {
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return nil, err
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}
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line.RxFIFO, err = strconv.ParseUint(fields[4], 10, 64)
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if err != nil {
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return nil, err
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}
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line.RxFrame, err = strconv.ParseUint(fields[5], 10, 64)
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if err != nil {
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return nil, err
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}
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line.RxCompressed, err = strconv.ParseUint(fields[6], 10, 64)
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if err != nil {
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return nil, err
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}
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line.RxMulticast, err = strconv.ParseUint(fields[7], 10, 64)
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if err != nil {
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return nil, err
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}
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// TX
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line.TxBytes, err = strconv.ParseUint(fields[8], 10, 64)
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if err != nil {
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return nil, err
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}
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line.TxPackets, err = strconv.ParseUint(fields[9], 10, 64)
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if err != nil {
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return nil, err
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}
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line.TxErrors, err = strconv.ParseUint(fields[10], 10, 64)
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if err != nil {
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return nil, err
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}
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line.TxDropped, err = strconv.ParseUint(fields[11], 10, 64)
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if err != nil {
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return nil, err
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}
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line.TxFIFO, err = strconv.ParseUint(fields[12], 10, 64)
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if err != nil {
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return nil, err
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}
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line.TxCollisions, err = strconv.ParseUint(fields[13], 10, 64)
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if err != nil {
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return nil, err
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}
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line.TxCarrier, err = strconv.ParseUint(fields[14], 10, 64)
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if err != nil {
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return nil, err
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}
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line.TxCompressed, err = strconv.ParseUint(fields[15], 10, 64)
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if err != nil {
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return nil, err
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}
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return line, nil
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}
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// Total aggregates the values across interfaces and returns a new NetDevLine.
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// The Name field will be a sorted comma separated list of interface names.
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func (nd NetDev) Total() NetDevLine {
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total := NetDevLine{}
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names := make([]string, 0, len(nd))
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for _, ifc := range nd {
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names = append(names, ifc.Name)
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total.RxBytes += ifc.RxBytes
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total.RxPackets += ifc.RxPackets
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total.RxPackets += ifc.RxPackets
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total.RxErrors += ifc.RxErrors
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total.RxDropped += ifc.RxDropped
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total.RxFIFO += ifc.RxFIFO
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total.RxFrame += ifc.RxFrame
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total.RxCompressed += ifc.RxCompressed
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total.RxMulticast += ifc.RxMulticast
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total.TxBytes += ifc.TxBytes
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total.TxPackets += ifc.TxPackets
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total.TxErrors += ifc.TxErrors
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total.TxDropped += ifc.TxDropped
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total.TxFIFO += ifc.TxFIFO
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total.TxCollisions += ifc.TxCollisions
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total.TxCarrier += ifc.TxCarrier
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total.TxCompressed += ifc.TxCompressed
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}
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sort.Strings(names)
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total.Name = strings.Join(names, ", ")
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return total
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}
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