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delete.go
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delete.go
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package commands // import "github.com/SUSE/groot-btrfs/commands"
import (
"fmt"
"path/filepath"
"code.cloudfoundry.org/lager"
"github.com/SUSE/groot-btrfs/commands/config"
"github.com/SUSE/groot-btrfs/commands/idfinder"
"github.com/SUSE/groot-btrfs/groot"
"github.com/SUSE/groot-btrfs/metrics"
"github.com/SUSE/groot-btrfs/store"
"github.com/SUSE/groot-btrfs/store/dependency_manager"
"github.com/SUSE/groot-btrfs/store/garbage_collector"
"github.com/SUSE/groot-btrfs/store/image_cloner"
errorspkg "github.com/pkg/errors"
"github.com/urfave/cli"
)
var DeleteCommand = cli.Command{
Name: "delete",
Usage: "delete <id|image path>",
Description: "Deletes a container image",
Action: func(ctx *cli.Context) error {
logger := ctx.App.Metadata["logger"].(lager.Logger)
logger = logger.Session("delete")
newExitError := newErrorHandler(logger, "delete")
if ctx.NArg() != 1 {
logger.Error("parsing-command", errorspkg.New("id was not specified"))
return newExitError("id was not specified", 1)
}
configBuilder := ctx.App.Metadata["configBuilder"].(*config.Builder)
cfg, err := configBuilder.Build()
logger.Debug("delete-config", lager.Data{"currentConfig": cfg})
if err != nil {
logger.Error("config-builder-failed", err)
return newExitError(err.Error(), 1)
}
storePath := cfg.StorePath
idOrPath := ctx.Args().First()
id, err := idfinder.FindID(storePath, idOrPath)
if err != nil {
logger.Debug("id-not-found-skipping", lager.Data{"id": idOrPath, "storePath": storePath, "errorMessage": err.Error()})
fmt.Println(err)
return nil
}
fsDriver, err := createFileSystemDriver(cfg)
if err != nil {
logger.Error("failed-to-initialise-filesystem-driver", err)
return newExitError(err.Error(), 1)
}
imageDriver, err := createImageDriver(cfg, fsDriver)
if err != nil {
logger.Error("failed-to-initialise-image-driver", err)
return newExitError(err.Error(), 1)
}
imageCloner := image_cloner.NewImageCloner(imageDriver, storePath)
dependencyManager := dependency_manager.NewDependencyManager(
filepath.Join(storePath, store.MetaDirName, "dependencies"),
)
metricsEmitter := metrics.NewEmitter()
deleter := groot.IamDeleter(imageCloner, dependencyManager, metricsEmitter)
sm := store.NewStoreMeasurer(storePath, fsDriver)
gc := garbage_collector.NewGC(fsDriver, imageCloner, dependencyManager)
defer func() {
unusedVols, err := gc.UnusedVolumes(logger, nil)
if err != nil {
logger.Error("getting-unused-layers-failed", err)
return
}
metricsEmitter.TryEmitUsage(logger, "UnusedLayersSize", sm.CacheUsage(logger, unusedVols), "bytes")
}()
err = deleter.Delete(logger, id)
if err != nil {
logger.Error("deleting-image-failed", err)
return newExitError(err.Error(), 1)
}
fmt.Printf("Image %s deleted\n", id)
metricsEmitter.TryIncrementRunCount("delete", nil)
return nil
},
}