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async_deleter.go
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/
async_deleter.go
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package app
import (
"fmt"
"sync"
"github.com/fatih/color"
"github.com/genevieve/leftovers/common"
multierror "github.com/hashicorp/go-multierror"
)
type logger interface {
Println(message string)
}
type AsyncDeleter struct {
logger logger
}
func NewAsyncDeleter(logger logger) AsyncDeleter {
return AsyncDeleter{
logger: logger,
}
}
func (a AsyncDeleter) Run(deletables [][]common.Deletable) error {
var (
wg sync.WaitGroup
result *multierror.Error
)
for _, list := range deletables {
for _, d := range list {
wg.Add(1)
go func(d common.Deletable) {
defer wg.Done()
a.logger.Println(fmt.Sprintf("[%s: %s] Deleting...", d.Type(), d.Name()))
err := d.Delete()
if err != nil {
err = fmt.Errorf("[%s: %s] %s", d.Type(), d.Name(), color.YellowString(err.Error()))
result = multierror.Append(result, err)
a.logger.Println(err.Error())
} else {
a.logger.Println(fmt.Sprintf("[%s: %s] %s", d.Type(), d.Name(), color.GreenString("Deleted!")))
}
}(d)
}
wg.Wait()
}
return result.ErrorOrNil()
}