/
logger.go
70 lines (59 loc) · 1.55 KB
/
logger.go
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package middleware
import (
"sync"
"time"
"github.com/gofiber/fiber/v2"
"go.uber.org/zap"
"go.uber.org/zap/zapcore"
)
func NewLoggerMiddleware(name string, fields ...zapcore.Field) fiber.Handler {
var errHandler fiber.ErrorHandler
var zaplogger = zap.L()
var once sync.Once
defer zaplogger.Sync()
if name != "" {
zaplogger = zaplogger.Named(name)
}
zaplogger = zaplogger.With(fields...)
// Return new handler
return func(c *fiber.Ctx) (err error) {
defer zaplogger.Sync()
start := time.Now().UTC()
logctx := zaplogger.With(
// We assume a request id has been set
zap.String("method", c.Method()),
zap.String("path", c.Path()),
zap.String("request_id", c.Locals("request_id").(string)),
)
c.Locals("logger", logctx)
// Handle request, store err for logging
chainErr := c.Next()
// Manually call error handler
if chainErr != nil {
once.Do(func() {
// override error handler
errHandler = c.App().Config().ErrorHandler
})
if err := errHandler(c, chainErr); err != nil {
_ = c.SendStatus(fiber.StatusInternalServerError)
}
}
// The callsite is useless for the logger field here
middlewareLogger := logctx.WithOptions(zap.WithCaller(false))
stop := time.Now()
if chainErr != nil {
middlewareLogger.Error(
chainErr.Error(),
zap.Int("status", c.Response().StatusCode()),
zap.Duration("latency", stop.Sub(start)),
)
} else {
middlewareLogger.Info(
"",
zap.Int("status", c.Response().StatusCode()),
zap.Duration("latency", stop.Sub(start)),
)
}
return nil
}
}