// Fonction principale, appelée au lancement du programme
func main() {
var err error
// Ces variables vont stocker differences d'usage des CPU/Core entre deux
// mesures
var diffUser, diffNice, diffSys, diffWait, diffIdle, diffSum uint64
// Les variables suivant vont êtres utilisées pour stocker les stats entre
// deux mesures
var cStatsPrev map[string]CPUStats
var netIOPrev *NetIO
var disksIOPrev map[string]DiskIO
// On va lire la configuration depuis l'environnement
// Le nom d'hote de la machine
hostname := os.Getenv("SENSOR_HOSTNAME")
if hostname == "" {
log.Fatalln("env var SENSOR_HOSTNAME does not exist")
}
// La période en secondes => le temps à attendre entre 2 mesures.
period := int64(10)
periodStr := os.Getenv("SENSOR_PERIOD")
if periodStr != "" {
period, err = strconv.ParseInt(periodStr, 10, 32)
}
// Tokens d'authentification
username := os.Getenv("SENSOR_OPENSTDB_USERNAME")
if username == "" {
log.Fatalln("env var SENSOR_OPENSTDB_USERNAME does not exist")
}
password := os.Getenv("SENSOR_OPENSTDB_PASSWORD")
if password == "" {
log.Fatalln("env var SENSOR_OPENSTDB_PASSWORD does not exist")
}
// On initialise un nouveau client OpenSTDB
OpenSTDBClient, err := gopentsdb.NewClient(gopentsdb.ClientConfig{
Endpoint: "https://opentsdb-gra1.tsaas.ovh.com",
Username: username,
Password: password,
InsecureSkipVerify: false,
})
if err != nil {
log.Fatalln(err)
}
// Boucle infinie.
// A chaque tour on va faire une serie de mesures
for {
// Cette variable va contenir les points a pousser vers OpenSTDB
points2Push := []gopentsdb.Point{}
// On fait une pause entre chaque mesure
// pour les curieux le fait de la faire en début de boucle, nous permet de
// ne pas ajouter cette instruction avant chaque "continue" en cas d'erreur
time.Sleep(time.Duration(period) * time.Second)
// On va chercher le load
load, err := GetLoadAvg()
if err != nil {
log.Print("ERROR: ", err)
continue
}
// On crée les trois points relatifs au load
ptLoadCurrent := gopentsdb.NewPoint()
ptLoadCurrent.Metric = "loadavg.current"
ptLoadCurrent.Timestamp = load.timestamp
ptLoadCurrent.Value = load.current
ptLoadCurrent.Tags["host"] = hostname
points2Push = append(points2Push, ptLoadCurrent)
ptLoad5Min := gopentsdb.NewPoint()
ptLoad5Min.Metric = "loadavg.5min"
ptLoad5Min.Timestamp = load.timestamp
ptLoad5Min.Value = load.avg5
ptLoad5Min.Tags["host"] = hostname
points2Push = append(points2Push, ptLoad5Min)
ptLoad15Min := gopentsdb.NewPoint()
ptLoad15Min.Metric = "loadavg.15min"
ptLoad15Min.Timestamp = load.timestamp
ptLoad15Min.Value = load.avg15
ptLoad15Min.Tags["host"] = hostname
points2Push = append(points2Push, ptLoad15Min)
// Les stats cpu
// cStatsPrev va stocker les stats cpu du test précédent. Ca va nous
// permettre d'avoir des usage en % sur la periode donnée
now := time.Now().Unix()
cStats, err := GetCPUStats()
if err != nil {
log.Print("ERROR: ", err)
continue
}
// On génere les point pour tous les cpu/cores
for cpu, stats := range *cStats {
// si on a des stats antérieures on fait un dif pour connaitre la conso de
// chaque en pourcentage sur l'interval
if &cStatsPrev != nil {
if prevStats, ok := cStatsPrev[cpu]; ok {
diffUser = stats.User - prevStats.User
diffNice = stats.Nice - prevStats.Nice
diffSys = stats.Sys - prevStats.Sys
diffWait = stats.Wait - prevStats.Wait
diffIdle = stats.Idle - prevStats.Idle
diffSum = diffUser + diffNice + diffSys + diffWait + diffIdle
// user
point := gopentsdb.NewPoint()
point.Metric = "cpu." + cpu + ".user.percent"
point.Timestamp = now
point.Value = float64(diffUser * 100 / diffSum)
point.Tags["host"] = hostname
points2Push = append(points2Push, point)
// nice
point = gopentsdb.NewPoint()
point.Metric = "cpu." + cpu + ".nice.percent"
point.Timestamp = now
point.Value = float64(diffNice * 100 / diffSum)
point.Tags["host"] = hostname
points2Push = append(points2Push, point)
// sys
point = gopentsdb.NewPoint()
point.Metric = "cpu." + cpu + ".sys.percent"
point.Timestamp = now
point.Value = float64(diffSys * 100 / diffSum)
point.Tags["host"] = hostname
points2Push = append(points2Push, point)
// wait
point = gopentsdb.NewPoint()
point.Metric = "cpu." + cpu + ".wait.percent"
point.Timestamp = now
point.Value = float64(diffWait * 100 / diffSum)
point.Tags["host"] = hostname
points2Push = append(points2Push, point)
// idle
point = gopentsdb.NewPoint()
point.Metric = "cpu." + cpu + ".idle.percent"
point.Timestamp = now
point.Value = float64(diffIdle * 100 / diffSum)
point.Tags["host"] = hostname
points2Push = append(points2Push, point)
}
}
}
cStatsPrev = *cStats
// Mémoire
now = time.Now().Unix()
memStats, err := GetMemStats()
if err == nil {
// Free
ptMemFree := gopentsdb.NewPoint()
ptMemFree.Metric = "mem.free"
ptMemFree.Timestamp = now
ptMemFree.Value = float64(memStats["MemFree"])
ptMemFree.Tags["host"] = hostname
points2Push = append(points2Push, ptMemFree)
// Memoire Utilisée
ptMemUsed := gopentsdb.NewPoint()
ptMemUsed.Metric = "mem.used"
ptMemUsed.Timestamp = now
ptMemUsed.Value = float64(memStats["MemTotal"] - memStats["MemFree"])
ptMemUsed.Tags["host"] = hostname
points2Push = append(points2Push, ptMemUsed)
// Cached
ptMemCached := gopentsdb.NewPoint()
ptMemCached.Metric = "mem.cached"
ptMemCached.Timestamp = now
ptMemCached.Value = float64(memStats["Cached"])
ptMemCached.Tags["host"] = hostname
points2Push = append(points2Push, ptMemCached)
// Buffers
ptMemBuffers := gopentsdb.NewPoint()
ptMemBuffers.Metric = "mem.buffers"
ptMemBuffers.Timestamp = now
ptMemBuffers.Value = float64(memStats["Buffers"])
ptMemBuffers.Tags["host"] = hostname
points2Push = append(points2Push, ptMemBuffers)
// Swap free
ptSwapFree := gopentsdb.NewPoint()
ptSwapFree.Metric = "mem.swap.free"
ptSwapFree.Timestamp = now
ptSwapFree.Value = float64(memStats["SwapFree"])
ptSwapFree.Tags["host"] = hostname
points2Push = append(points2Push, ptSwapFree)
// Swap used
ptSwapused := gopentsdb.NewPoint()
ptSwapused.Metric = "mem.swap.used"
ptSwapused.Timestamp = now
ptSwapused.Value = float64(memStats["SwapTotal"] - memStats["SwapFree"])
ptSwapused.Tags["host"] = hostname
points2Push = append(points2Push, ptSwapused)
}
// Le reseau
io, err := GetNetIO()
if err != nil {
log.Println(err)
} else if netIOPrev != nil {
timeDelta := uint64(io.timestamp - netIOPrev.timestamp)
// IN
ptNetIn := gopentsdb.NewPoint()
ptNetIn.Metric = "net.in"
ptNetIn.Timestamp = io.timestamp
ptNetIn.Value = float64((io.in - netIOPrev.in) / timeDelta)
ptNetIn.Tags["host"] = hostname
points2Push = append(points2Push, ptNetIn)
// OUT
ptNetOut := gopentsdb.NewPoint()
ptNetOut.Metric = "net.out"
ptNetOut.Timestamp = io.timestamp
ptNetOut.Value = float64((io.out - netIOPrev.out) / timeDelta)
ptNetOut.Tags["host"] = hostname
points2Push = append(points2Push, ptNetOut)
}
netIOPrev = io
// Les lectures / écritues disk
disksIO, err := GetDisksIO()
if err != nil {
log.Println(err)
} else if disksIOPrev != nil {
for disk, stats := range disksIO {
timeDelta := uint64(stats.Timestamp - disksIOPrev[disk].Timestamp)
point := gopentsdb.NewPoint()
point.Metric = "disk." + disk + ".reads"
point.Timestamp = stats.Timestamp
point.Value = float64((stats.Reads - disksIOPrev[disk].Reads) / timeDelta)
point.Tags["host"] = hostname
points2Push = append(points2Push, point)
point = gopentsdb.NewPoint()
point.Metric = "disk." + disk + ".writes"
point.Timestamp = stats.Timestamp
point.Value = float64((stats.Writes - disksIOPrev[disk].Writes) / timeDelta)
point.Tags["host"] = hostname
points2Push = append(points2Push, point)
}
}
disksIOPrev = disksIO
// On pousse les points vers OVH
if err = OpenSTDBClient.Push(points2Push); err != nil {
log.Println(err)
}
}
}
func main() {
var diffUser, diffNice, diffSys, diffWait, diffIdle, diffSum uint64
// Les variables suivant vont êtres utilisées pour stocker les stats entre
// deux mesures
var cStatsPrev map[string]CPUStats
temporizedClient, err := gopentsdb.NewTemporizedClient(gopentsdb.TemporizedClientConfig{
Period: 10,
MaxPoints: 0,
CConfig: &gopentsdb.ClientConfig{
Endpoint: "https://opentsdb.iot.runabove.io",
Username: "",
Password: "",
InsecureSkipVerify: true,
},
})
if err != nil {
log.Fatalln(err)
}
//var tv syscall.Timeval
for {
time.Sleep(1000 * time.Millisecond)
// Les stats cpu
// cStatsPrev va stocker les stats cpu du test précédent. Ca va nous
// permettre d'avoir des usage en % sur la periode donnée
//syscall.Gettimeofday(&tv)
//now := (int64(tv.Sec)*1e3 + int64(tv.Usec)/1e3)
now := time.Now().UnixNano() / 1000000
cStats, err := GetCPUStats()
if err != nil {
log.Print("ERROR: ", err)
continue
}
// On génere les point pour tous les cpu/cores
for cpu, stats := range *cStats {
// si on a des stats antérieures on fait un dif pour connaitre la conso de
// chaque en pourcentage sur l'interval
if &cStatsPrev != nil {
if prevStats, ok := cStatsPrev[cpu]; ok {
diffUser = stats.User - prevStats.User
diffNice = stats.Nice - prevStats.Nice
diffSys = stats.Sys - prevStats.Sys
diffWait = stats.Wait - prevStats.Wait
diffIdle = stats.Idle - prevStats.Idle
diffSum = diffUser + diffNice + diffSys + diffWait + diffIdle
// user
point := gopentsdb.NewPoint()
point.Metric = "cpu." + cpu + ".user.percent"
point.Timestamp = now
point.Value = float64(diffUser * 100 / diffSum)
point.Tags["host"] = "trooper"
temporizedClient.Add(point)
// nice
point = gopentsdb.NewPoint()
point.Metric = "cpu." + cpu + ".nice.percent"
point.Timestamp = now
point.Value = float64(diffNice * 100 / diffSum)
point.Tags["host"] = "trooper"
temporizedClient.Add(point)
// sys
point = gopentsdb.NewPoint()
point.Metric = "cpu." + cpu + ".sys.percent"
point.Timestamp = now
point.Value = float64(diffSys * 100 / diffSum)
point.Tags["host"] = "trooper"
temporizedClient.Add(point)
// wait
point = gopentsdb.NewPoint()
point.Metric = "cpu." + cpu + ".wait.percent"
point.Timestamp = now
point.Value = float64(diffWait * 100 / diffSum)
point.Tags["host"] = "trooper"
temporizedClient.Add(point)
// idle
point = gopentsdb.NewPoint()
point.Metric = "cpu." + cpu + ".idle.percent"
point.Timestamp = now
point.Value = float64(diffIdle * 100 / diffSum)
point.Tags["host"] = "trooper"
temporizedClient.Add(point)
}
}
}
cStatsPrev = *cStats
}
}