goext/exerr/errinit.go

package exerr

type ErrorPackageConfig struct {
	ZeroLogTraces   bool        // autom print zerolog logs on CreateError
	RecursiveErrors bool        // errors contains their Origin-Error
	Types           []ErrorType // all available error-types
}

type ErrorPackageConfigInit struct {
	LogTraces       bool
	RecursiveErrors bool
	InitTypes       func(_ func(_ string) ErrorType)
}

var initialized = false

var pkgconfig = ErrorPackageConfig{
	ZeroLogTraces:   true,
	RecursiveErrors: true,
	Types:           []ErrorType{TypeInternal},
}

// Init initializes the exerr packages
// Must be called at the program start, before (!) any errors
// Is not thread-safe
func Init(cfg ErrorPackageConfigInit) {
	if initialized {
		panic("Cannot re-init error package")
	}

	types := pkgconfig.Types

	fnAddType := func(v string) ErrorType {
		et := ErrorType{v}
		types = append(types, et)
		return et
	}

	if cfg.InitTypes != nil {
		cfg.InitTypes(fnAddType)
	}

	pkgconfig = ErrorPackageConfig{
		ZeroLogTraces:   cfg.LogTraces,
		RecursiveErrors: cfg.RecursiveErrors,
		Types:           types,
	}

	initialized = true
}