forked from influxdata/telegraf
-
Notifications
You must be signed in to change notification settings - Fork 1
/
apache.go
170 lines (146 loc) · 3.26 KB
/
apache.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
package apache
import (
"bufio"
"fmt"
"net"
"net/http"
"net/url"
"strconv"
"strings"
"sync"
"time"
"github.com/influxdata/telegraf/plugins/inputs"
)
type Apache struct {
Urls []string
}
var sampleConfig = `
# An array of Apache status URI to gather stats.
urls = ["http://localhost/server-status?auto"]
`
func (n *Apache) SampleConfig() string {
return sampleConfig
}
func (n *Apache) Description() string {
return "Read Apache status information (mod_status)"
}
func (n *Apache) Gather(acc inputs.Accumulator) error {
var wg sync.WaitGroup
var outerr error
for _, u := range n.Urls {
addr, err := url.Parse(u)
if err != nil {
return fmt.Errorf("Unable to parse address '%s': %s", u, err)
}
wg.Add(1)
go func(addr *url.URL) {
defer wg.Done()
outerr = n.gatherUrl(addr, acc)
}(addr)
}
wg.Wait()
return outerr
}
var tr = &http.Transport{
ResponseHeaderTimeout: time.Duration(3 * time.Second),
}
var client = &http.Client{Transport: tr}
func (n *Apache) gatherUrl(addr *url.URL, acc inputs.Accumulator) error {
resp, err := client.Get(addr.String())
if err != nil {
return fmt.Errorf("error making HTTP request to %s: %s", addr.String(), err)
}
defer resp.Body.Close()
if resp.StatusCode != http.StatusOK {
return fmt.Errorf("%s returned HTTP status %s", addr.String(), resp.Status)
}
tags := getTags(addr)
sc := bufio.NewScanner(resp.Body)
fields := make(map[string]interface{})
for sc.Scan() {
line := sc.Text()
if strings.Contains(line, ":") {
parts := strings.SplitN(line, ":", 2)
key, part := strings.Replace(parts[0], " ", "", -1), strings.TrimSpace(parts[1])
switch key {
case "Scoreboard":
for field, value := range n.gatherScores(part) {
fields[field] = value
}
default:
value, err := strconv.ParseFloat(part, 64)
if err != nil {
continue
}
fields[key] = value
}
}
}
acc.AddFields("apache", fields, tags)
return nil
}
func (n *Apache) gatherScores(data string) map[string]interface{} {
var waiting, open int = 0, 0
var S, R, W, K, D, C, L, G, I int = 0, 0, 0, 0, 0, 0, 0, 0, 0
for _, s := range strings.Split(data, "") {
switch s {
case "_":
waiting++
case "S":
S++
case "R":
R++
case "W":
W++
case "K":
K++
case "D":
D++
case "C":
C++
case "L":
L++
case "G":
G++
case "I":
I++
case ".":
open++
}
}
fields := map[string]interface{}{
"scboard_waiting": float64(waiting),
"scboard_starting": float64(S),
"scboard_reading": float64(R),
"scboard_sending": float64(W),
"scboard_keepalive": float64(K),
"scboard_dnslookup": float64(D),
"scboard_closing": float64(C),
"scboard_logging": float64(L),
"scboard_finishing": float64(G),
"scboard_idle_cleanup": float64(I),
"scboard_open": float64(open),
}
return fields
}
// Get tag(s) for the apache plugin
func getTags(addr *url.URL) map[string]string {
h := addr.Host
host, port, err := net.SplitHostPort(h)
if err != nil {
host = addr.Host
if addr.Scheme == "http" {
port = "80"
} else if addr.Scheme == "https" {
port = "443"
} else {
port = ""
}
}
return map[string]string{"server": host, "port": port}
}
func init() {
inputs.Add("apache", func() inputs.Input {
return &Apache{}
})
}