plc-mirror/cmd/record-indexer/admin.go

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2024-02-15 17:10:39 +01:00
package main
import (
"context"
"fmt"
"net/http"
"strconv"
"golang.org/x/time/rate"
)
func AddAdminHandlers(limiter *Limiter, pool *WorkerPool) {
http.HandleFunc("/rate/set", handleRateSet(limiter))
http.HandleFunc("/rate/setAll", handleRateSetAll(limiter))
http.HandleFunc("/pool/resize", handlePoolResize(pool))
}
func handlePoolResize(pool *WorkerPool) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
s := r.FormValue("size")
if s == "" {
http.Error(w, "need size", http.StatusBadRequest)
return
}
size, err := strconv.Atoi(s)
if err != nil {
http.Error(w, err.Error(), http.StatusBadRequest)
return
}
pool.Resize(context.Background(), size)
fmt.Fprintln(w, "OK")
}
}
func handleRateSet(limiter *Limiter) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
s := r.FormValue("limit")
if s == "" {
http.Error(w, "need limit", http.StatusBadRequest)
return
}
name := r.FormValue("name")
if name == "" {
http.Error(w, "need name", http.StatusBadRequest)
return
}
limit, err := strconv.Atoi(s)
if err != nil {
http.Error(w, err.Error(), http.StatusBadRequest)
return
}
limiter.SetLimit(context.Background(), name, rate.Limit(limit))
fmt.Fprintln(w, "OK")
}
}
func handleRateSetAll(limiter *Limiter) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
s := r.FormValue("limit")
if s == "" {
http.Error(w, "need limit", http.StatusBadRequest)
return
}
limit, err := strconv.Atoi(s)
if err != nil {
http.Error(w, err.Error(), http.StatusBadRequest)
return
}
limiter.SetAllLimits(context.Background(), rate.Limit(limit))
fmt.Fprintln(w, "OK")
}
}