149 lines
3.6 KiB
Go
149 lines
3.6 KiB
Go
package apache
|
|
|
|
import (
|
|
"bufio"
|
|
"fmt"
|
|
"net"
|
|
"net/http"
|
|
"net/url"
|
|
"strconv"
|
|
"strings"
|
|
"sync"
|
|
"time"
|
|
|
|
"github.com/influxdb/telegraf/plugins"
|
|
)
|
|
|
|
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 plugins.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 plugins.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)
|
|
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":
|
|
n.gatherScores(part, acc, tags)
|
|
default:
|
|
value, err := strconv.ParseFloat(part, 32)
|
|
if err != nil {
|
|
continue
|
|
}
|
|
acc.Add(key, value, tags)
|
|
}
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (n *Apache) gatherScores(data string, acc plugins.Accumulator, tags map[string]string) {
|
|
|
|
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++
|
|
}
|
|
}
|
|
|
|
acc.Add("scboard_waiting", float64(waiting), tags);
|
|
acc.Add("scboard_starting", float64(S), tags);
|
|
acc.Add("scboard_reading", float64(R), tags);
|
|
acc.Add("scboard_sending", float64(W), tags);
|
|
acc.Add("scboard_keepalive", float64(K), tags);
|
|
acc.Add("scboard_dnslookup", float64(D), tags);
|
|
acc.Add("scboard_closing", float64(C), tags);
|
|
acc.Add("scboard_logging", float64(L), tags);
|
|
acc.Add("scboard_finishing", float64(G), tags);
|
|
acc.Add("scboard_idle_cleanup", float64(I), tags);
|
|
acc.Add("scboard_open", float64(open), tags);
|
|
}
|
|
|
|
// Get tag(s) for the apache plugin
|
|
func getTags(addr *url.URL) map[string]string {
|
|
h := addr.Host
|
|
if host, port, err := net.SplitHostPort(h); err == nil {
|
|
return map[string]string{"server": host, "port": port}
|
|
} else {
|
|
return map[string]string{"server": h, "port": "80"}
|
|
}
|
|
}
|
|
|
|
func init() {
|
|
plugins.Add("apache", func() plugins.Plugin {
|
|
return &Apache{}
|
|
})
|
|
}
|