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garbage_collect_images.go
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/
garbage_collect_images.go
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package handlers
import (
"encoding/json"
"net/http"
"github.com/pkg/errors"
"github.com/replicatedhq/kots/pkg/kotsadm"
kotsadmtypes "github.com/replicatedhq/kots/pkg/kotsadm/types"
"github.com/replicatedhq/kots/pkg/kotsutil"
"github.com/replicatedhq/kots/pkg/logger"
"github.com/replicatedhq/kots/pkg/registry"
"github.com/replicatedhq/kots/pkg/store"
)
type GarbageCollectImagesRequest struct {
IgnoreRollback bool `json:"ignoreRollback,omitempty"`
}
type GarbageCollectImagesResponse struct {
Error string `json:"error,omitempty"`
}
func (h *Handler) GarbageCollectImages(w http.ResponseWriter, r *http.Request) {
response := GarbageCollectImagesResponse{}
garbageCollectImagesRequest := GarbageCollectImagesRequest{}
if err := json.NewDecoder(r.Body).Decode(&garbageCollectImagesRequest); err != nil {
response.Error = "failed to decode request"
logger.Error(errors.Wrap(err, response.Error))
JSON(w, http.StatusBadRequest, response)
return
}
installParams, err := kotsutil.GetInstallationParams(kotsadmtypes.KotsadmConfigMap)
if err != nil {
response.Error = "failed to get app registry info"
logger.Error(errors.Wrap(err, response.Error))
JSON(w, http.StatusInternalServerError, response)
return
}
if !installParams.EnableImageDeletion {
response.Error = "image garbage collection is not enabled"
logger.Error(errors.New(response.Error))
JSON(w, http.StatusBadRequest, response)
return
}
isKurl, err := kotsadm.IsKurl() // this is a redundant check, as written today, EnableImageDeletion is an alias for IsKurl
if err != nil {
response.Error = "failed to check kURL"
logger.Error(errors.Wrap(err, response.Error))
JSON(w, http.StatusInternalServerError, response)
return
}
if !isKurl {
response.Error = "image garbage collection is only supported in embedded clusters"
logger.Error(errors.New(response.Error))
JSON(w, http.StatusBadRequest, response)
return
}
apps, err := store.GetStore().ListInstalledApps()
if err != nil {
response.Error = "failed to list apps"
logger.Error(errors.Wrap(err, response.Error))
JSON(w, http.StatusInternalServerError, response)
return
}
if len(apps) == 0 {
response.Error = "no installed apps found"
logger.Error(errors.New(response.Error))
JSON(w, http.StatusBadRequest, response)
return
}
go func() {
for _, app := range apps {
logger.Infof("Deleting images for app %s", app.Slug)
err := registry.DeleteUnusedImages(app.ID, garbageCollectImagesRequest.IgnoreRollback)
if err != nil {
if _, ok := err.(registry.AppRollbackError); ok {
logger.Infof("not garbage collecting images because version allows rollbacks: %v", err)
} else {
logger.Error(errors.Wrap(err, "failed to delete unused images"))
}
}
}
}()
JSON(w, http.StatusOK, response)
}