95a09fd9d8
- 增加中央与边缘完整配置和部署脚本 - 引入 VictoriaMetrics 数据源与 remote_write 故障排查说明 - 新增 edge-agent 配置脚本、ONVIF 自建 exporter 与 ping 监控示例 Co-authored-by: Cursor <cursoragent@cursor.com>
123 lines
3.2 KiB
Go
123 lines
3.2 KiB
Go
package main
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import (
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"encoding/json"
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"log"
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"net/http"
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"os"
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"strings"
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"time"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/prometheus/client_golang/prometheus/promhttp"
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"github.com/use-go/onvif"
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"github.com/use-go/onvif/device"
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)
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const (
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defaultTargetsFile = "/config/targets.json"
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defaultPort = "9600"
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)
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type targetGroup struct {
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Targets []string `json:"targets"`
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Labels map[string]string `json:"labels"`
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}
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func main() {
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targetsFile := os.Getenv("TARGETS_FILE")
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if targetsFile == "" {
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targetsFile = defaultTargetsFile
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}
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port := os.Getenv("EXPORTER_PORT")
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if port == "" {
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port = defaultPort
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}
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up := prometheus.NewGaugeVec(prometheus.GaugeOpts{
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Name: "onvif_device_up",
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Help: "1 if ONVIF device is reachable, 0 otherwise",
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}, []string{"instance", "location", "model", "device_type"})
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duration := prometheus.NewGaugeVec(prometheus.GaugeOpts{
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Name: "onvif_probe_duration_seconds",
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Help: "ONVIF probe duration in seconds",
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}, []string{"instance", "location", "model", "device_type"})
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reg := prometheus.NewRegistry()
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reg.MustRegister(up, duration)
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go func() {
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ticker := time.NewTicker(60 * time.Second)
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defer ticker.Stop()
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for ; true; <-ticker.C {
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probe(targetsFile, up, duration)
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}
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}()
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// 启动时立即探测一次
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probe(targetsFile, up, duration)
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http.Handle("/metrics", promhttp.HandlerFor(reg, promhttp.HandlerOpts{EnableOpenMetrics: true}))
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http.HandleFunc("/health", func(w http.ResponseWriter, _ *http.Request) { w.WriteHeader(http.StatusOK) })
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log.Printf("ONVIF exporter listening on :%s", port)
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if err := http.ListenAndServe(":"+port, nil); err != nil {
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log.Fatal(err)
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}
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}
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func probe(targetsFile string, up, duration *prometheus.GaugeVec) {
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data, err := os.ReadFile(targetsFile)
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if err != nil {
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log.Printf("read targets file: %v", err)
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return
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}
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var groups []targetGroup
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if err := json.Unmarshal(data, &groups); err != nil {
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log.Printf("parse targets: %v", err)
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return
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}
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for _, g := range groups {
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if len(g.Targets) == 0 {
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continue
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}
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ip := strings.TrimSpace(g.Targets[0])
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port := "80"
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if p, ok := g.Labels["onvif_port"]; ok && p != "" {
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port = strings.TrimSpace(p)
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}
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user := strings.TrimSpace(g.Labels["username"])
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pass := strings.TrimSpace(g.Labels["password"])
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location := strings.TrimSpace(g.Labels["location"])
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model := strings.TrimSpace(g.Labels["model"])
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deviceType := strings.TrimSpace(g.Labels["device_type"])
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instance := ip + ":" + port
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labels := prometheus.Labels{
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"instance": instance,
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"location": location,
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"model": model,
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"device_type": deviceType,
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}
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start := time.Now()
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err := probeONVIF(ip, port, user, pass)
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elapsed := time.Since(start).Seconds()
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duration.With(labels).Set(elapsed)
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if err != nil {
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log.Printf("onvif probe %s: %v", instance, err)
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up.With(labels).Set(0)
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} else {
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up.With(labels).Set(1)
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}
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}
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}
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func probeONVIF(ip, port, username, password string) error {
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xaddr := ip + ":" + port
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params := onvif.DeviceParams{Xaddr: xaddr, Username: username, Password: password}
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dev, err := onvif.NewDevice(params)
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if err != nil {
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return err
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}
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_, err = dev.CallMethod(device.GetDeviceInformation{})
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return err
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}
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