/
logger.go
51 lines (43 loc) · 1.28 KB
/
logger.go
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package handler
import (
"fmt"
"net/http"
"github.com/DMarby/picsum-photos/internal/logger"
"github.com/DMarby/picsum-photos/internal/tracing"
"github.com/felixge/httpsnoop"
)
// Logger is a handler that logs requests using Zap
func Logger(log *logger.Logger, h http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
respMetrics := httpsnoop.CaptureMetricsFn(w, func(ww http.ResponseWriter) {
h.ServeHTTP(ww, r)
})
ctx := r.Context()
traceID, spanID := tracing.TraceInfo(ctx)
logFields := []interface{}{
"trace-id", traceID,
"span-id", spanID,
"http-method", r.Method,
"remote-addr", r.RemoteAddr,
"user-agent", r.UserAgent(),
"uri", r.URL.String(),
"status-code", respMetrics.Code,
"elapsed", fmt.Sprintf("%.9fs", respMetrics.Duration.Seconds()),
}
switch {
case respMetrics.Code >= 500:
log.Errorw("Request completed", logFields...)
default:
log.Debugw("Request completed", logFields...)
}
})
}
// LogFields logs the given keys and values for a request
func LogFields(r *http.Request, keysAndValues ...interface{}) []interface{} {
ctx := r.Context()
traceID, spanID := tracing.TraceInfo(ctx)
return append([]interface{}{
"trace-id", traceID,
"span-id", spanID,
}, keysAndValues...)
}