60 lines
1.6 KiB
Go
60 lines
1.6 KiB
Go
package main
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import (
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"bufio"
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"bytes"
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"encoding/json"
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"net/http"
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"runtime"
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"strconv"
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"strings"
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"golang.zx2c4.com/wireguard/device"
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)
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func statsHandler(next http.Handler, dev *device.Device) http.Handler {
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return http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) {
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if r.URL.Host != "" || r.URL.Path != "/stats" {
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next.ServeHTTP(rw, r)
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return
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}
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stats := struct {
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Endpoint string
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LastHandshakeTimestamp int64
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ReceivedBytes int64
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SentBytes int64
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NumGoroutine int
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}{
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NumGoroutine: runtime.NumGoroutine(),
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}
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var buf bytes.Buffer
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if err := dev.IpcGetOperation(&buf); err != nil {
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logger.Errorf("Get device config: %v", err)
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rw.WriteHeader(http.StatusInternalServerError)
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} else {
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scanner := bufio.NewScanner(&buf)
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for scanner.Scan() {
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line := scanner.Text()
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if prefix := "endpoint="; strings.HasPrefix(line, prefix) {
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stats.Endpoint = strings.TrimPrefix(line, prefix)
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}
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if prefix := "last_handshake_time_sec="; strings.HasPrefix(line, prefix) {
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stats.LastHandshakeTimestamp, _ = strconv.ParseInt(strings.TrimPrefix(line, prefix), 10, 64)
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}
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if prefix := "rx_bytes="; strings.HasPrefix(line, prefix) {
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stats.ReceivedBytes, _ = strconv.ParseInt(strings.TrimPrefix(line, prefix), 10, 64)
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}
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if prefix := "tx_bytes="; strings.HasPrefix(line, prefix) {
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stats.SentBytes, _ = strconv.ParseInt(strings.TrimPrefix(line, prefix), 10, 64)
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}
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}
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resp, _ := json.MarshalIndent(stats, "", " ")
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rw.Header().Set("Content-Type", "application/json")
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_, _ = rw.Write(append(resp, '\n'))
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}
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})
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}
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