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41 lines
654 B
Go
41 lines
654 B
Go
package main
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import (
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"encoding/json"
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"fmt"
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"net/http"
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"sync"
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)
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type response struct {
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OK bool `json:"ok"`
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Hits int `json:"hits"`
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}
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type server struct {
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sync.Mutex
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counters map[string]int
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}
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func (s *server) ServeHTTP(w http.ResponseWriter, r *http.Request) {
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hits := s.hit(r.URL.Path)
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fmt.Printf("% 8d %s\n", hits, r.URL.Path)
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w.Header().Add("Content-Type", "application/json")
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json.NewEncoder(w).Encode(response{OK: true, Hits: hits})
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}
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func (s *server) hit(path string) int {
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s.Lock()
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defer s.Unlock()
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if s.counters == nil {
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s.counters = map[string]int{path: 1}
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return 1
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}
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s.counters[path]++
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return s.counters[path]
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}
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