func configMemoryRoutes() {
http.HandleFunc("/page/memory", func(w http.ResponseWriter, r *http.Request) {
mem, err := nux.MemInfo()
if err != nil {
RenderMsgJson(w, err.Error())
return
}
memFree := mem.MemFree + mem.Buffers + mem.Cached
memUsed := mem.MemTotal - memFree
var t uint64 = 1024 * 1024
RenderDataJson(w, []interface{}{mem.MemTotal / t, memUsed / t, memFree / t})
})
http.HandleFunc("/proc/memory", func(w http.ResponseWriter, r *http.Request) {
mem, err := nux.MemInfo()
if err != nil {
RenderMsgJson(w, err.Error())
return
}
memFree := mem.MemFree + mem.Buffers + mem.Cached
memUsed := mem.MemTotal - memFree
RenderDataJson(w, map[string]interface{}{
"total": mem.MemTotal,
"free": memFree,
"used": memUsed,
})
})
}
func heartbeat(duration time.Duration) {
mem, err := nux.MemInfo()
if err != nil {
log.Println("[ERROR] get meminfo:", err)
return
}
// use MB
memFree := (mem.MemFree + mem.Buffers + mem.Cached) / 1024 / 1024
localIp := g.Config().LocalIp
containers, err := dock.Containers(g.Config().Docker)
if err != nil {
log.Println("[ERROR] list containers fail:", err)
// this node dead
var resp model.NodeResponse
err = g.RpcClient.Call("NodeState.NodeDown", localIp, &resp)
if err != nil || resp.Code != 0 {
log.Println("[ERROR] call rpc: NodeState.NodeDown fail:", err, "resp:", resp)
} else if g.Config().Debug {
log.Println("[INFO] call rpc: NodeState.NodeDown successfully. I am dead...")
}
for {
time.Sleep(duration)
containers, err = dock.Containers(g.Config().Docker)
if err == nil {
break
} else {
log.Println("[ERROR] list containers fail:", err)
}
}
}
req := model.NodeRequest{
Node: model.Node{
Ip: localIp,
MemFree: memFree,
},
Containers: containers,
}
var resp model.NodeResponse
err = g.RpcClient.Call("NodeState.Push", req, &resp)
if err != nil || resp.Code != 0 {
log.Println("[ERROR] call rpc: NodeState.Push fail:", err, "resp:", resp)
} else if g.Config().Debug {
log.Println("[DEBUG] =>", req)
}
}
func MemMetrics() []*model.MetricValue {
m, err := nux.MemInfo()
if err != nil {
log.Println(err)
return nil
}
memFree := m.MemFree + m.Buffers + m.Cached
memUsed := m.MemTotal - memFree
pmemFree := 0.0
pmemUsed := 0.0
if m.MemTotal != 0 {
pmemFree = float64(memFree) * 100.0 / float64(m.MemTotal)
pmemUsed = float64(memUsed) * 100.0 / float64(m.MemTotal)
}
pswapFree := 0.0
pswapUsed := 0.0
if m.SwapTotal != 0 {
pswapFree = float64(m.SwapFree) * 100.0 / float64(m.SwapTotal)
pswapUsed = float64(m.SwapUsed) * 100.0 / float64(m.SwapTotal)
}
return []*model.MetricValue{
GaugeValue("mem.memtotal", m.MemTotal),
GaugeValue("mem.memused", memUsed),
GaugeValue("mem.memfree", memFree),
GaugeValue("mem.swaptotal", m.SwapTotal),
GaugeValue("mem.swapused", m.SwapUsed),
GaugeValue("mem.swapfree", m.SwapFree),
GaugeValue("mem.memfree.percent", pmemFree),
GaugeValue("mem.memused.percent", pmemUsed),
GaugeValue("mem.swapfree.percent", pswapFree),
GaugeValue("mem.swapused.percent", pswapUsed),
}
}