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collector.go
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/
collector.go
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package errs
import (
"errors"
"fmt"
"strings"
)
func CollectErrors(sep string, errs ...error) error {
if len(errs) == 0 {
return nil
}
errorWord := ""
for _, err := range errs {
if err != nil {
errorWord += err.Error() + sep
}
}
if errorWord == "" {
return nil
}
errorWord = strings.TrimRight(errorWord, sep)
return errors.New(errorWord)
}
func WrapError(err error, errSeparator, msg string, args ...interface{}) error {
cont := NewErrorContainer()
cont.AddError(fmt.Errorf(msg, args...))
cont.AddError(err)
return cont.Result(errSeparator)
}
func AppendError(err error, errs *[]error) {
if err != nil {
*errs = append(*errs, err)
}
}
type ErrorContainer struct {
errors []error
}
func NewErrorContainer() *ErrorContainer {
return &ErrorContainer{
errors: []error{},
}
}
func (ec *ErrorContainer) AddError(err error) {
AppendError(err, &ec.errors)
}
func (ec *ErrorContainer) Result(sep string) error {
return CollectErrors(sep, ec.errors...)
}
func (ec *ErrorContainer) AddErrorF(msg string, args ...interface{}) {
err := fmt.Errorf(msg, args...)
ec.AddError(err)
}