41 lines
889 B
Go
41 lines
889 B
Go
// ## HTTP Server Logging
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package main
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import "net/http"
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import "time"
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import "fmt"
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func runLogging(logs chan string) {
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for log := range logs {
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fmt.Println(log)
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}
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}
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func wrapLogging(f http.HandlerFunc) http.HandlerFunc {
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logs := make(chan string, 10000)
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go runLogging(logs)
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return func(res http.ResponseWriter, req *http.Request) {
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start := time.Now()
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f(res, req)
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method := req.Method
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path := req.URL.Path
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elapsed := float64(time.Since(start)) / 1000000.0
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logs <- fmt.Sprintf("method=%s path=%s elapsed=%f", method, path, elapsed)
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}
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}
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func hello(res http.ResponseWriter, req *http.Request) {
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res.Header().Set("Content-Type", "text/plain")
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time.Sleep(time.Millisecond * 50)
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fmt.Fprintln(res, "Hello logged world")
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}
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func main() {
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handler := wrapLogging(hello)
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http.HandleFunc("/", handler)
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http.ListenAndServe(":5000", nil)
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}
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// todo: status code?
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