config.go

package log

import (
	"fmt"
	"io"
	"testing"
)

// Config is the configuration for the logger.
type Config struct {
	// Level sets the minimum log level for the logger.
	Level Level `json:"level"`

	// Destination is the place the logger writes to.
	Destination Destination `json:"destination"`

	// T is the Go test for logging purposes.
	T *testing.T `json:"-" yaml:"-"`

	// Stdout is the standard output used by the DestinationStdout destination. If not set, os.Stdout is used.
	Stdout io.Writer `json:"-" yaml:"-"`
}

func (c Config) Validate() error {
	if err := c.Level.Validate(); err != nil {
		return fmt.Errorf("invalid level value (%w)", err)
	}
	if err := c.Destination.Validate(); err != nil {
		return fmt.Errorf("invalid destination value (%w)", err)
	}
	if c.Destination == DestinationTest && c.T == nil {
		return fmt.Errorf("no T value supplied with destination=test")
	}
	return nil
}