| 1 | // SPDX-License-Identifier: GPL-3.0-or-later |
| 2 | |
| 3 | package phpfpm |
| 4 | |
| 5 | import ( |
| 6 | "bufio" |
| 7 | "encoding/json" |
| 8 | "errors" |
| 9 | "io" |
| 10 | "strconv" |
| 11 | "strings" |
| 12 | ) |
| 13 | |
| 14 | type decoder func(r io.Reader, s *status) error |
| 15 | |
| 16 | func decodeJSON(r io.Reader, s *status) error { |
| 17 | return json.NewDecoder(r).Decode(s) |
| 18 | } |
| 19 | |
| 20 | func decodeText(r io.Reader, s *status) error { |
| 21 | parts := readParts(r) |
| 22 | if len(parts) == 0 { |
| 23 | return errors.New("invalid text format") |
| 24 | } |
| 25 | |
| 26 | part, parts := parts[0], parts[1:] |
| 27 | if err := readStatus(part, s); err != nil { |
| 28 | return err |
| 29 | } |
| 30 | |
| 31 | return readProcesses(parts, s) |
| 32 | } |
| 33 | |
| 34 | func readParts(r io.Reader) [][]string { |
| 35 | sc := bufio.NewScanner(r) |
| 36 | |
| 37 | var parts [][]string |
| 38 | var lines []string |
| 39 | for sc.Scan() { |
| 40 | line := strings.Trim(sc.Text(), "\r\n ") |
| 41 | // Split parts by star border |
| 42 | if strings.HasPrefix(line, "***") { |
| 43 | parts = append(parts, lines) |
| 44 | lines = []string{} |
| 45 | continue |
| 46 | } |
| 47 | // Skip empty lines |
| 48 | if line == "" { |
| 49 | continue |
| 50 | } |
| 51 | lines = append(lines, line) |
| 52 | } |
| 53 | |
| 54 | if len(lines) > 0 { |
| 55 | parts = append(parts, lines) |
| 56 | } |
| 57 | return parts |
| 58 | } |
| 59 | |
| 60 | func readStatus(data []string, s *status) error { |
| 61 | for _, line := range data { |
| 62 | key, val, err := parseLine(line) |
| 63 | if err != nil { |
| 64 | return err |
| 65 | } |
| 66 | |
| 67 | switch key { |
| 68 | case "active processes": |
| 69 | s.Active = parseInt(val) |
| 70 | case "max active processes": |
| 71 | s.MaxActive = parseInt(val) |
| 72 | case "idle processes": |
| 73 | s.Idle = parseInt(val) |
| 74 | case "accepted conn": |
| 75 | s.Requests = parseInt(val) |
| 76 | case "max children reached": |
| 77 | s.Reached = parseInt(val) |
| 78 | case "slow requests": |
| 79 | s.Slow = parseInt(val) |
| 80 | } |
| 81 | } |
| 82 | return nil |
| 83 | } |
| 84 | |
| 85 | func readProcesses(procs [][]string, s *status) error { |
| 86 | for _, part := range procs { |
| 87 | var proc proc |
| 88 | for _, line := range part { |
| 89 | key, val, err := parseLine(line) |
| 90 | if err != nil { |
| 91 | return err |
| 92 | } |
| 93 | |
| 94 | switch key { |
| 95 | case "state": |
| 96 | proc.State = val |
| 97 | case "request duration": |
| 98 | proc.Duration = requestDuration(parseInt(val)) |
| 99 | case "last request cpu": |
| 100 | proc.CPU = parseFloat(val) |
| 101 | case "last request memory": |
| 102 | proc.Memory = parseInt(val) |
| 103 | } |
| 104 | } |
| 105 | s.Processes = append(s.Processes, proc) |
| 106 | } |
| 107 | return nil |
| 108 | } |
| 109 | |
| 110 | func parseLine(s string) (string, string, error) { |
| 111 | kv := strings.SplitN(s, ":", 2) |
| 112 | if len(kv) != 2 { |
| 113 | return "", "", errors.New("invalid text format line") |
| 114 | } |
| 115 | return strings.TrimSpace(kv[0]), strings.TrimSpace(kv[1]), nil |
| 116 | } |
| 117 | |
| 118 | func parseInt(s string) int64 { |
| 119 | val, err := strconv.ParseInt(strings.TrimSpace(s), 10, 64) |
| 120 | if err != nil { |
| 121 | return 0 |
| 122 | } |
| 123 | return val |
| 124 | } |
| 125 | |
| 126 | func parseFloat(s string) float64 { |
| 127 | val, err := strconv.ParseFloat(strings.TrimSpace(s), 64) |
| 128 | if err != nil { |
| 129 | return 0 |
| 130 | } |
| 131 | return val |
| 132 | } |