func sendMemUsage(interval time.Duration) {
mem, err := linux.GetMemUsage()
now := time.Now()
if err != nil {
log.Printf("[WARN] unable to get system memory usage: ", err.Error())
} else {
dispatch("system", now, mem)
}
conts, err := docker.ListContainers()
if err != nil {
log.Fatalln("[WARN] unable to get list of containers: ", err.Error())
}
for _, cont := range conts {
mem, err = docker.GetMemUsage(cont)
now = time.Now()
if err != nil {
log.Printf("[WARN] unable to get memory usage for %s: %s\n", cont, err.Error())
} else {
dispatch(cont, now, mem)
}
}
for _, client := range clients {
client.Flush()
}
}
func sendCPUUsage(interval time.Duration) {
cpu, err := linux.GetCPUUsage()
now := time.Now()
if err != nil {
log.Printf("[WARN] unable to get system cpu usage: ", err.Error())
} else {
ctup, ok := data["system"]
if ok {
avg := float64(cpu-ctup.cpu) * 1000000000 / float64(now.Sub(ctup.time))
ctup.time = now
ctup.cpu = cpu
dispatch("system", now, avg)
} else {
data["system"] = &ctuple{time: now, cpu: cpu}
}
}
conts, err := docker.ListContainers()
if err != nil {
log.Fatalln("[WARN] unable to get list of containers: ", err.Error())
}
for _, cont := range conts {
cpu, err = docker.GetCPUUsage(cont)
now = time.Now()
if err != nil {
log.Printf("[WARN] unable to get cpu usage for %s: %s\n", cont, err.Error())
continue
}
ctup, ok := data[cont]
if ok {
avg := float64(cpu-ctup.cpu) * 1000000000 / float64(now.Sub(ctup.time))
ctup.time = now
ctup.cpu = cpu
dispatch(cont, now, avg)
} else {
data[cont] = &ctuple{time: now, cpu: cpu}
}
}
for _, client := range clients {
client.Flush()
}
}
func sendNetUsage(interval time.Duration) {
out, err := linux.Exec("ifconfig -s")
now := time.Now()
if err != nil {
log.Printf("[WARN] unable to get system net usage: ", err.Error())
} else {
reader := csv.NewReader(strings.NewReader(out))
reader.Comma = ' '
reader.TrimLeadingSpace = true
net_data, err := reader.ReadAll()
if err != nil {
log.Println("[WARN] unable to get system net usage: ", err.Error())
} else {
for index, row := range net_data {
if index == 0 {
continue
}
net, err := strconv.ParseInt(row[3], 10, 64)
if err != nil {
log.Println("[WARN] error in converting to integer: ", err.Error())
} else {
ntup, ok := rxdata[row[0]]
if ok {
avg := float64(net-ntup.net) * 1000000000 / float64(now.Sub(ntup.time))
ntup.time = now
ntup.net = net
dispatch(row[0], now, avg, "rx")
} else {
rxdata[row[0]] = &ntuple{time: now, net: net}
}
}
net, err = strconv.ParseInt(row[7], 10, 64)
if err != nil {
log.Println("[WARN] error in converting to integer: ", err.Error())
} else {
ntup, ok := txdata[row[0]]
if ok {
avg := float64(net-ntup.net) * 1000000000 / float64(now.Sub(ntup.time))
ntup.time = now
ntup.net = net
dispatch(row[0], now, avg, "tx")
} else {
txdata[row[0]] = &ntuple{time: now, net: net}
}
}
}
}
}
conts, err := docker.ListContainers()
if err != nil {
log.Fatalln("[WARN] unable to get list of containers: ", err.Error())
}
for _, cont := range conts {
net, err := docker.GetNetInUsage(cont)
now = time.Now()
if err != nil {
log.Printf("[WARN] unable to get rx net usage for %s: %s\n", cont, err.Error())
} else {
ntup, ok := rxdata[cont]
if ok {
avg := float64(net-ntup.net) * 1000000000 / float64(now.Sub(ntup.time))
ntup.time = now
ntup.net = net
dispatch(cont, now, avg, "rx")
} else {
rxdata[cont] = &ntuple{time: now, net: net}
}
}
net, err = docker.GetNetOutUsage(cont)
now = time.Now()
if err != nil {
log.Printf("[WARN] unable to get tx net usage for %s: %s\n", cont, err.Error())
} else {
ntup, ok := txdata[cont]
if ok {
avg := float64(net-ntup.net) * 1000000000 / float64(now.Sub(ntup.time))
ntup.time = now
ntup.net = net
dispatch(cont, now, avg, "tx")
} else {
txdata[cont] = &ntuple{time: now, net: net}
}
}
}
for _, client := range clients {
client.Flush()
}
}