24e8161262
- add base structure - unify the proto metrics creation and propagation - implement arp and openvpn - refactor to meet the prom exporter standart - add instance label to the metrics - refactor the call chain - add gateway, unbound_dns and openvpn implementations - add gateway stuff - structure refactor; mod clean; cron implementation - implement cron in the collector; refactor utils in the opnsense package refactor names and implement option functions to disable collectorInstances add GH action workflows Create codeql.yml - clean fix stuff
331 lines
6.4 KiB
Go
331 lines
6.4 KiB
Go
// Copyright 2010 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in https://raw.githubusercontent.com/golang/go/master/LICENSE
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package str2duration
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import (
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"errors"
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"time"
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)
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var unitMap = map[string]int64{
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"ns": int64(time.Nanosecond),
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"us": int64(time.Microsecond),
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"µs": int64(time.Microsecond), // U+00B5 = micro symbol
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"μs": int64(time.Microsecond), // U+03BC = Greek letter mu
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"ms": int64(time.Millisecond),
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"s": int64(time.Second),
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"m": int64(time.Minute),
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"h": int64(time.Hour),
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"d": int64(time.Hour) * 24,
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"w": int64(time.Hour) * 168,
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}
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// ParseDuration parses a duration string.
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// A duration string is a possibly signed sequence of
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// decimal numbers, each with optional fraction and a unit suffix,
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// such as "300ms", "-1.5h" or "2h45m".
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// Valid time units are "ns", "us" (or "µs"), "ms", "s", "m", "h", "d", "w".
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func ParseDuration(s string) (time.Duration, error) {
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// [-+]?([0-9]*(\.[0-9]*)?[a-z]+)+
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orig := s
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var d int64
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neg := false
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// Consume [-+]?
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if s != "" {
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c := s[0]
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if c == '-' || c == '+' {
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neg = c == '-'
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s = s[1:]
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}
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}
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// Special case: if all that is left is "0", this is zero.
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if s == "0" {
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return 0, nil
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}
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if s == "" {
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return 0, errors.New("time: invalid duration " + quote(orig))
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}
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for s != "" {
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var (
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v, f int64 // integers before, after decimal point
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scale float64 = 1 // value = v + f/scale
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)
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var err error
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// The next character must be [0-9.]
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if !(s[0] == '.' || '0' <= s[0] && s[0] <= '9') {
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return 0, errors.New("time: invalid duration " + quote(orig))
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}
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// Consume [0-9]*
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pl := len(s)
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v, s, err = leadingInt(s)
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if err != nil {
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return 0, errors.New("time: invalid duration " + quote(orig))
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}
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pre := pl != len(s) // whether we consumed anything before a period
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// Consume (\.[0-9]*)?
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post := false
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if s != "" && s[0] == '.' {
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s = s[1:]
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pl := len(s)
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f, scale, s = leadingFraction(s)
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post = pl != len(s)
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}
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if !pre && !post {
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// no digits (e.g. ".s" or "-.s")
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return 0, errors.New("time: invalid duration " + quote(orig))
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}
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// Consume unit.
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i := 0
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for ; i < len(s); i++ {
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c := s[i]
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if c == '.' || '0' <= c && c <= '9' {
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break
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}
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}
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if i == 0 {
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return 0, errors.New("time: missing unit in duration " + quote(orig))
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}
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u := s[:i]
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s = s[i:]
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unit, ok := unitMap[u]
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if !ok {
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return 0, errors.New("time: unknown unit " + quote(u) + " in duration " + quote(orig))
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}
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if v > (1<<63-1)/unit {
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// overflow
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return 0, errors.New("time: invalid duration " + quote(orig))
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}
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v *= unit
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if f > 0 {
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// float64 is needed to be nanosecond accurate for fractions of hours.
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// v >= 0 && (f*unit/scale) <= 3.6e+12 (ns/h, h is the largest unit)
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v += int64(float64(f) * (float64(unit) / scale))
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if v < 0 {
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// overflow
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return 0, errors.New("time: invalid duration " + quote(orig))
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}
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}
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d += v
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if d < 0 {
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// overflow
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return 0, errors.New("time: invalid duration " + quote(orig))
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}
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}
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if neg {
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d = -d
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}
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return time.Duration(d), nil
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}
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func quote(s string) string {
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return "\"" + s + "\""
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}
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var errLeadingInt = errors.New("time: bad [0-9]*") // never printed
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// leadingInt consumes the leading [0-9]* from s.
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func leadingInt(s string) (x int64, rem string, err error) {
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i := 0
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for ; i < len(s); i++ {
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c := s[i]
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if c < '0' || c > '9' {
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break
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}
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if x > (1<<63-1)/10 {
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// overflow
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return 0, "", errLeadingInt
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}
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x = x*10 + int64(c) - '0'
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if x < 0 {
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// overflow
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return 0, "", errLeadingInt
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}
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}
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return x, s[i:], nil
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}
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// leadingFraction consumes the leading [0-9]* from s.
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// It is used only for fractions, so does not return an error on overflow,
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// it just stops accumulating precision.
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func leadingFraction(s string) (x int64, scale float64, rem string) {
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i := 0
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scale = 1
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overflow := false
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for ; i < len(s); i++ {
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c := s[i]
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if c < '0' || c > '9' {
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break
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}
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if overflow {
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continue
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}
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if x > (1<<63-1)/10 {
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// It's possible for overflow to give a positive number, so take care.
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overflow = true
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continue
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}
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y := x*10 + int64(c) - '0'
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if y < 0 {
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overflow = true
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continue
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}
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x = y
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scale *= 10
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}
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return x, scale, s[i:]
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}
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// String returns a string representing the duration in the form "1w4d2h3m5s".
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// Units with 0 values aren't returned, for example: 1d1ms is 1 day 1 milliseconds
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func String(d time.Duration) string {
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if d == 0 {
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return "0s"
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}
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// Largest time is 15250w1d23h47m16s854ms775us807ns
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var buf [32]byte
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w := len(buf)
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var sign string
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u := uint64(d)
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neg := d < 0
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if neg {
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u = -u
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sign = "-"
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}
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// u is nanoseconds (ns)
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if u > 0 {
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w--
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if u%1000 > 0 {
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buf[w] = 's'
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w--
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buf[w] = 'n'
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w = fmtInt(buf[:w], u%1000)
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} else {
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w++
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}
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u /= 1000
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// u is now integer microseconds (us)
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if u > 0 {
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w--
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if u%1000 > 0 {
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buf[w] = 's'
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w--
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buf[w] = 'u'
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w = fmtInt(buf[:w], u%1000)
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} else {
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w++
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}
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u /= 1000
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// u is now integer milliseconds (ms)
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if u > 0 {
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w--
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if u%1000 > 0 {
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buf[w] = 's'
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w--
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buf[w] = 'm'
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w = fmtInt(buf[:w], u%1000)
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} else {
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w++
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}
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u /= 1000
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// u is now integer seconds (s)
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if u > 0 {
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w--
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if u%60 > 0 {
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buf[w] = 's'
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w = fmtInt(buf[:w], u%60)
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} else {
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w++
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}
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u /= 60
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// u is now integer minutes (m)
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if u > 0 {
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w--
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if u%60 > 0 {
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buf[w] = 'm'
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w = fmtInt(buf[:w], u%60)
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} else {
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w++
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}
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u /= 60
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// u is now integer hours (h)
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if u > 0 {
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w--
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if u%24 > 0 {
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buf[w] = 'h'
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w = fmtInt(buf[:w], u%24)
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} else {
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w++
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}
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u /= 24
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// u is now integer days (d)
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if u > 0 {
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w--
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if u%7 > 0 {
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buf[w] = 'd'
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w = fmtInt(buf[:w], u%7)
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} else {
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w++
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}
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u /= 7
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// u is now integer weeks (w)
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if u > 0 {
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w--
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buf[w] = 'w'
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w = fmtInt(buf[:w], u)
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}
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}
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}
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}
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}
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}
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}
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}
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return sign + string(buf[w:])
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}
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// fmtInt formats v into the tail of buf.
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// It returns the index where the output begins.
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func fmtInt(buf []byte, v uint64) int {
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w := len(buf)
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if v == 0 {
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w--
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buf[w] = '0'
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} else {
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for v > 0 {
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w--
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buf[w] = byte(v%10) + '0'
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v /= 10
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}
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}
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return w
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}
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