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generate_metadata.go
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generate_metadata.go
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package commands // import "github.com/SUSE/groot-btrfs/commands"
import (
"fmt"
"os"
"code.cloudfoundry.org/lager"
"github.com/SUSE/groot-btrfs/base_image_puller"
"github.com/SUSE/groot-btrfs/commands/config"
"github.com/SUSE/groot-btrfs/store/filesystems"
errorspkg "github.com/pkg/errors"
"github.com/urfave/cli"
)
var GenerateVolumeSizeMetadata = cli.Command{
Name: "generate-volume-size-metadata",
Hidden: true,
Action: func(ctx *cli.Context) error {
logger := ctx.App.Metadata["logger"].(lager.Logger)
logger = logger.Session("generate-metadata")
if ctx.NArg() != 0 {
logger.Error("parsing-command", errorspkg.New("invalid arguments"), lager.Data{"args": ctx.Args()})
return cli.NewExitError(fmt.Sprintf("invalid arguments - usage: %s", ctx.Command.Usage), 1)
}
configBuilder := ctx.App.Metadata["configBuilder"].(*config.Builder)
cfg, err := configBuilder.Build()
if err != nil {
return err
}
driver, err := createFileSystemDriver(cfg)
if err != nil {
return err
}
volumes, err := driver.Volumes(logger)
if err != nil {
return err
}
for _, volumeID := range volumes {
_, err := driver.VolumeSize(logger, volumeID)
if os.IsNotExist(errorspkg.Cause(err)) {
logger.Info("volume-meta-missing", lager.Data{"volumeID": volumeID})
volumePath, err := driver.VolumePath(logger, volumeID)
if err != nil {
return err
}
size, err := filesystems.CalculatePathSize(logger, volumePath)
if err != nil {
return err
}
err = driver.WriteVolumeMeta(logger, volumeID, base_image_puller.VolumeMeta{Size: size})
if err != nil {
return err
}
}
}
return nil
},
}