52 lines
1.4 KiB
Go
52 lines
1.4 KiB
Go
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package hlog_test
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import (
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"net/http"
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"os"
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"github.com/rs/zerolog"
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"github.com/rs/zerolog/hlog"
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)
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// fake alice to avoid dep
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type alice struct{}
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func (a alice) Append(interface{}) alice { return a }
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func (alice) Then(h http.Handler) http.Handler { return h }
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func Example_handler() {
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host, _ := os.Hostname()
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log := zerolog.New(os.Stdout).With().
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Str("role", "my-service").
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Str("host", host).
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Logger()
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c := alice{}
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// Install the logger handler with default output on the console
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c = c.Append(hlog.NewHandler(log))
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// Install some provided extra handler to set some request's context fields.
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// Thanks to those handler, all our logs will come with some pre-populated fields.
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c = c.Append(hlog.RemoteAddrHandler("ip"))
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c = c.Append(hlog.UserAgentHandler("user_agent"))
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c = c.Append(hlog.RefererHandler("referer"))
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c = c.Append(hlog.RequestIDHandler("req_id", "Request-Id"))
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// Here is your final handler
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h := c.Then(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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// Get the logger from the request's context. You can safely assume it
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// will be always there: if the handler is removed, hlog.FromRequest
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// will return a no-op logger.
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hlog.FromRequest(r).Info().
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Str("user", "current user").
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Str("status", "ok").
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Msg("Something happend")
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}))
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http.Handle("/", h)
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if err := http.ListenAndServe(":8080", nil); err != nil {
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log.Fatal().Err(err).Msg("Startup failed")
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}
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}
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