forked from bosun-monitor/bosun
/
eventListener.go
72 lines (66 loc) · 1.51 KB
/
eventListener.go
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package collect
import (
"compress/gzip"
"encoding/json"
"fmt"
"net/http"
"time"
"bosun.org/opentsdb"
"bosun.org/slog"
"github.com/garyburd/redigo/redis"
)
func HandleCounterPut(server string, database int) http.HandlerFunc {
pool := newRedisPool(server, database)
return func(w http.ResponseWriter, r *http.Request) {
gReader, err := gzip.NewReader(r.Body)
if err != nil {
http.Error(w, err.Error(), 500)
return
}
decoder := json.NewDecoder(gReader)
dps := []*opentsdb.DataPoint{}
err = decoder.Decode(&dps)
if err != nil {
http.Error(w, err.Error(), 500)
return
}
conn := pool.Get()
defer conn.Close()
for _, dp := range dps {
mts := fmt.Sprintf("%s%s", dp.Metric, dp.Tags)
var i int64
switch v := dp.Value.(type) {
case int:
i = int64(v)
case int64:
i = v
case float64:
i = int64(v)
default:
http.Error(w, "Values must be integers.", 400)
return
}
if _, err = conn.Do("HINCRBY", RedisCountersKey, mts, i); err != nil {
slog.Errorf("Error incrementing counter %s by %d. %s", mts, i, err)
http.Error(w, err.Error(), 500)
return
}
}
}
}
const RedisCountersKey = "scollectorCounters"
func newRedisPool(server string, database int) *redis.Pool {
return &redis.Pool{
MaxIdle: 10,
MaxActive: 10,
Wait: true,
IdleTimeout: 240 * time.Second,
Dial: func() (redis.Conn, error) {
c, err := redis.Dial("tcp", server, redis.DialDatabase(database))
if err != nil {
return nil, err
}
return c, err
},
}
}