go-zero/core/logx/fields.go
2022-07-11 23:19:26 +08:00

19 lines
459 B
Go

package logx
import "context"
var fieldsContextKey contextKey
type contextKey struct{}
// WithFields returns a new context with the given fields.
func WithFields(ctx context.Context, fields ...LogField) context.Context {
if val := ctx.Value(fieldsContextKey); val != nil {
if arr, ok := val.([]LogField); ok {
return context.WithValue(ctx, fieldsContextKey, append(arr, fields...))
}
}
return context.WithValue(ctx, fieldsContextKey, fields)
}