nginx-ui/server/internal/analytic/node.go

115 lines
2.2 KiB
Go

package analytic
import (
"encoding/json"
"github.com/0xJacky/Nginx-UI/server/internal/logger"
"github.com/0xJacky/Nginx-UI/server/model"
"github.com/0xJacky/Nginx-UI/server/query"
"github.com/gorilla/websocket"
"github.com/opentracing/opentracing-go/log"
"github.com/shirou/gopsutil/v3/load"
"github.com/shirou/gopsutil/v3/net"
"net/http"
"time"
)
type Node struct {
EnvironmentID int `json:"environment_id,omitempty"`
Name string `json:"name,omitempty"`
AvgLoad *load.AvgStat `json:"avg_load"`
CPUPercent float64 `json:"cpu_percent"`
MemoryPercent float64 `json:"memory_percent"`
DiskPercent float64 `json:"disk_percent"`
Network net.IOCountersStat `json:"network"`
Status bool `json:"status"`
}
type TNodeMap map[int]*Node
var NodeMap TNodeMap
func init() {
NodeMap = make(TNodeMap)
}
func nodeAnalyticLive(env *model.Environment, errChan chan error) {
for {
err := nodeAnalyticRecord(env)
if err != nil {
// set node offline
if NodeMap[env.ID] != nil {
NodeMap[env.ID].Status = false
}
log.Error(err)
errChan <- err
// wait 5s then reconnect
time.Sleep(5 * time.Second)
}
}
}
func nodeAnalyticRecord(env *model.Environment) (err error) {
url, err := env.GetWebSocketURL("/api/analytic/intro")
if err != nil {
return
}
header := http.Header{}
header.Set("X-Node-Secret", env.Token)
c, _, err := websocket.DefaultDialer.Dial(url, header)
if err != nil {
return
}
defer c.Close()
for {
_, message, err := c.ReadMessage()
if err != nil {
return err
}
logger.Debugf("recv: %s %s", env.Name, message)
var nodeAnalytic Node
err = json.Unmarshal(message, &nodeAnalytic)
if err != nil {
return err
}
nodeAnalytic.EnvironmentID = env.ID
nodeAnalytic.Name = env.Name
// set online
nodeAnalytic.Status = true
NodeMap[env.ID] = &nodeAnalytic
}
}
func RetrieveNodesStatus() {
NodeMap = make(TNodeMap)
env := query.Environment
envs, err := env.Find()
if err != nil {
logger.Error(err)
return
}
errChan := make(chan error)
for _, v := range envs {
go nodeAnalyticLive(v, errChan)
}
// block at here
for err = range errChan {
log.Error(err)
}
}