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log.go
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log.go
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// Package log implements a logging middleware
package log
import (
"net/http"
"time"
"github.com/datarhei/core/log"
"github.com/labstack/echo/v4"
"github.com/labstack/echo/v4/middleware"
)
type Config struct {
// Skipper defines a function to skip middleware.
Skipper middleware.Skipper
Logger log.Logger
}
var DefaultConfig = Config{
Skipper: middleware.DefaultSkipper,
Logger: log.New("HTTP"),
}
func New() echo.MiddlewareFunc {
return NewWithConfig(DefaultConfig)
}
// New returns a middleware for logging HTTP requests
func NewWithConfig(config Config) echo.MiddlewareFunc {
if config.Skipper == nil {
config.Skipper = DefaultConfig.Skipper
}
if config.Logger == nil {
config.Logger = DefaultConfig.Logger
}
return func(next echo.HandlerFunc) echo.HandlerFunc {
return func(c echo.Context) error {
if config.Skipper(c) {
return next(c)
}
start := time.Now()
req := c.Request()
res := c.Response()
path := req.URL.Path
raw := req.URL.RawQuery
if err := next(c); err != nil {
c.Error(err)
}
latency := time.Since(start)
if raw != "" {
path = path + "?" + raw
}
logger := config.Logger.WithFields(log.Fields{
"client": c.RealIP(),
"method": req.Method,
"path": path,
"proto": req.Proto,
"status": res.Status,
"status_text": http.StatusText(res.Status),
"size_bytes": res.Size,
"latency_ms": latency.Milliseconds(),
"user_agent": req.Header.Get("User-Agent"),
})
if res.Status >= 400 {
logger.Warn().Log("")
}
logger.Debug().Log("")
return nil
}
}
}