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deleter.go
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deleter.go
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package groot
import (
"fmt"
"os"
"time"
"github.com/pkg/errors"
"code.cloudfoundry.org/lager"
)
type Deleter struct {
imageCloner ImageCloner
dependencyManager DependencyManager
metricsEmitter MetricsEmitter
}
func IamDeleter(imageCloner ImageCloner, dependencyManager DependencyManager, metricsEmitter MetricsEmitter) *Deleter {
return &Deleter{
imageCloner: imageCloner,
dependencyManager: dependencyManager,
metricsEmitter: metricsEmitter,
}
}
func (d *Deleter) Delete(logger lager.Logger, id string) error {
defer d.metricsEmitter.TryEmitDurationFrom(logger, MetricImageDeletionTime, time.Now())
logger = logger.Session("groot-deleting", lager.Data{"imageID": id})
logger.Info("starting")
defer logger.Info("ending")
if err := d.imageCloner.Destroy(logger, id); err != nil {
return err
}
imageRefName := fmt.Sprintf(ImageReferenceFormat, id)
if err := d.dependencyManager.Deregister(imageRefName); err != nil {
if !os.IsNotExist(errors.Cause(err)) {
logger.Error("failed-to-deregister-dependencies", err)
return err
}
}
return nil
}