predictor/internal/api/middleware/log.go

34 lines
1.1 KiB
Go

package middleware
import (
"time"
"github.com/ogen-go/ogen/middleware"
"go.uber.org/zap"
)
// statusCoder is implemented by ogen's *...StatusCode error wrappers.
type statusCoder interface{ GetStatusCode() int }
// OgenLogging is an ogen middleware that logs each operation's duration and
// outcome. Handler errors carrying a 4xx/5xx-class status are logged at the
// appropriate level: client errors (and expected 503s during startup) at
// warn without a stacktrace, server errors at error.
func OgenLogging(log *zap.Logger) middleware.Middleware {
return func(req middleware.Request, next func(req middleware.Request) (middleware.Response, error)) (middleware.Response, error) {
start := time.Now()
resp, err := next(req)
lg := log.With(zap.String("operation", req.OperationID), zap.Duration("duration", time.Since(start)))
if err == nil {
lg.Info("request completed")
return resp, err
}
if sc, ok := err.(statusCoder); ok && sc.GetStatusCode() < 500 {
lg.Warn("request rejected", zap.Int("status", sc.GetStatusCode()), zap.NamedError("reason", err))
} else {
lg.Error("request failed", zap.Error(err))
}
return resp, err
}
}