52 lines
1.2 KiB
Go
52 lines
1.2 KiB
Go
// +build ignore
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package main
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import (
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"context"
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"flag"
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"net/http"
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"time"
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"github.com/Xe/ln"
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"github.com/Xe/ln/ex"
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"github.com/facebookgo/flagenv"
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"golang.org/x/net/trace"
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)
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var (
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port = flag.String("port", "2145", "http port to listen on")
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tracingFamily = flag.String("trace-family", "ln example", "tracing family to use for x/net/trace")
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)
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func main() {
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flagenv.Parse()
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flag.Parse()
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ln.DefaultLogger.Filters = append(ln.DefaultLogger.Filters, ex.NewGoTraceLogger())
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http.HandleFunc("/", handleIndex)
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http.ListenAndServe(":"+*port, middlewareSpan(ex.HTTPLog(http.DefaultServeMux)))
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}
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func middlewareSpan(next http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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sp := trace.New(*tracingFamily, "HTTP request")
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defer sp.Finish()
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ctx, cancel := context.WithTimeout(r.Context(), 30*time.Second)
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defer cancel()
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ctx = trace.NewContext(ctx, sp)
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next.ServeHTTP(w, r.WithContext(ctx))
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})
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}
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func handleIndex(w http.ResponseWriter, r *http.Request) {
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ctx := r.Context()
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ln.Log(ctx, ln.Action("index"), ln.F{"there_is": "no_danger"})
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http.Error(w, "There is no danger citizen", http.StatusOK)
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}
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