/
main.go
171 lines (148 loc) · 3.37 KB
/
main.go
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package main
import (
"net/http"
"io/ioutil"
"encoding/json"
"strings"
"github.com/robfig/config"
"log"
"flag"
)
type Data struct {
Values []float64 `json:"values"`
Dstypes []string `json:"dstypes"`
Dsnames []string `json:"dsnames"`
Time float64 `json:"time"`
Interval float64 `json:"interval"`
Host string `json:"host"`
Plugin string `json:"plugin"`
PluginInstance string `json:"plugin_instance"`
Type string `json:"type"`
TypeInstance string `json:"type_instance"`
}
type Point struct {
Host string
Plugin string
PluginInstance string
Type string
TypeInstance string
Name string
Value float64
}
type Influx struct {
Name string `json:"name"`
Columns []string `json:"columns"`
Points [][]interface{} `json:"points"`
}
func (i *Influx) addPoint(a ...interface{}) {
var e []interface{}
for _, v := range a {
e = append(a, v)
}
i.Points = append(i.Points, e)
}
func handler(w http.ResponseWriter, r *http.Request) {
body, err := ioutil.ReadAll(r.Body)
if err != nil {
panic(err)
}
if verbose {
log.Printf("Body %v", string(body))
}
var d []Data
err = json.Unmarshal(body, &d)
if err != nil {
panic(err)
}
if verbose {
log.Printf("Collectd %+v", d)
}
influx := Influx{}
influx.Name = "events"
influx.Columns = []string{"host", "key", "value"}
for _, e := range d {
for i, n := range e.Dsnames {
if verbose {
log.Printf("E %+v", e)
}
keys := []string{e.Plugin, e.PluginInstance, e.Type, e.TypeInstance, n}
key := ""
for i, k := range keys {
if k != "" {
key += k
if i < len(keys) -1 {
key += "."
}
}
}
if verbose {
log.Printf("Key : %v", key)
}
influx.addPoint(e.Host, key, e.Values[i])
}
}
b, e := json.Marshal([]Influx{influx})
if e != nil {
panic(e)
}
resp, err := http.Post(influxUrl, "application/json", strings.NewReader(string(b)))
if err != nil {
panic(err)
}
defer resp.Body.Close()
if verbose {
res , _ := ioutil.ReadAll(resp.Body)
log.Printf("Influx post response %v %v", resp.Status, string(res));
}
}
// global url for influx
var influxUrl string
var verbose bool
func main() {
flag.BoolVar(&verbose, "verbose", false, "See lots of stuff")
confFile := flag.String("config", "", "Config file location")
flag.Parse()
var (
protocol string
host string
port string
db string
user string
password string
err error
c *config.Config
)
c, err = config.ReadDefault(*confFile)
if err != nil {
log.Print("No config file found, using defaults")
protocol = "http://"
host = "localhost"
port = "8086"
db = "events"
user = "data"
password = "data"
} else {
if protocol, err = c.RawStringDefault("protocol"); err != nil {
protocol = "http://"
}
if host, err = c.RawStringDefault("host"); err != nil {
host = "localhost"
}
if db, err = c.RawStringDefault("db"); err != nil {
db = "events"
}
if user, err = c.RawStringDefault("user"); err != nil {
user = "data"
}
if user, err = c.RawStringDefault("password"); err != nil {
user = "password"
}
}
influxUrl = protocol+host+":"+port+"/db/"+db+"/series?u="+user+"&p="+password
if verbose {
log.Print("Starting proxy")
log.Print("InfluxDB URL : " + influxUrl)
}
http.HandleFunc("/", handler)
http.ListenAndServe(":8079", nil)
}