72 lines
1.8 KiB
Go
72 lines
1.8 KiB
Go
package hlog_test
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import (
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"net/http"
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"os"
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"time"
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"net/http/httptest"
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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 middleware func(http.Handler) http.Handler
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type alice struct {
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m []middleware
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}
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func (a alice) Append(m middleware) alice {
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a.m = append(a.m, m)
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return a
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}
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func (a alice) Then(h http.Handler) http.Handler {
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for i := range a.m {
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h = a.m[len(a.m)-1-i](h)
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}
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return h
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}
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func init() {
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zerolog.TimestampFunc = func() time.Time {
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return time.Date(2001, time.February, 3, 4, 5, 6, 7, time.UTC)
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}
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}
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func Example_handler() {
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log := zerolog.New(os.Stdout).With().
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Timestamp().
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Str("role", "my-service").
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Str("host", "local-hostname").
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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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h.ServeHTTP(httptest.NewRecorder(), &http.Request{})
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// Output: {"level":"info","time":"2001-02-03T04:05:06Z","role":"my-service","host":"local-hostname","user":"current user","status":"ok","message":"Something happend"}
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}
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