68 lines
1.2 KiB
Go
68 lines
1.2 KiB
Go
package exporter
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import (
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"net/http"
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"sync"
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"time"
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"github.com/go-chi/chi/v5/middleware"
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)
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type requestData struct {
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Latency time.Duration
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Request *http.Request
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Start time.Time
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}
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type RequestDataQueue struct {
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mu sync.Mutex
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data []requestData
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}
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func NewRequestDataQueue() *RequestDataQueue {
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return &RequestDataQueue{
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data: []requestData{},
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}
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}
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func (q *RequestDataQueue) Add(data requestData) {
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q.mu.Lock()
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defer q.mu.Unlock()
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q.data = append(q.data, data)
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}
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func (q *RequestDataQueue) ConsumeAll() []requestData {
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q.mu.Lock()
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defer q.mu.Unlock()
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data := q.data
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q.data = nil
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return data
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}
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type Middleware struct {
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queue *RequestDataQueue
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}
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func NewMiddleware(queue *RequestDataQueue) func(next http.Handler) http.Handler {
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m := Middleware{
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queue: queue,
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}
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return m.handler
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}
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func (m Middleware) handler(next http.Handler) http.Handler {
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fn := func(w http.ResponseWriter, r *http.Request) {
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start := time.Now()
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ww := middleware.NewWrapResponseWriter(w, r.ProtoMajor)
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next.ServeHTTP(ww, r)
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m.queue.Add(
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requestData{
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Latency: time.Since(start),
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Request: r,
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Start: start,
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},
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)
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}
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return http.HandlerFunc(fn)
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}
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