frostfs-node/cmd/neofs-lens/internal/commands/inspect/inspect.go

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package inspect
import (
"fmt"
"os"
common "github.com/nspcc-dev/neofs-node/cmd/neofs-lens/internal"
"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/blobovnicza"
"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/writecache"
cid "github.com/nspcc-dev/neofs-sdk-go/container/id"
"github.com/nspcc-dev/neofs-sdk-go/object"
oid "github.com/nspcc-dev/neofs-sdk-go/object/id"
"github.com/spf13/cobra"
)
const (
flagAddress = "address"
flagEnginePath = "path"
flagHeader = "header"
flagOutFile = "out"
flagWriteCache = "writecache"
)
var (
vAddress string
vHeader bool
vPath string
vOut string
vWriteCache bool
)
// Command contains `inspect` command definition.
var Command = &cobra.Command{
Use: "inspect",
Short: "Object inspection",
Long: `Inspect specific object in storage engine component.`,
Run: objectInspectCmd,
}
func init() {
Command.Flags().StringVar(&vAddress, flagAddress, "", "Object address")
_ = Command.MarkFlagRequired(flagAddress)
Command.Flags().StringVar(&vPath, flagEnginePath, "",
"Path to storage engine component",
)
_ = Command.MarkFlagFilename(flagEnginePath)
_ = Command.MarkFlagRequired(flagEnginePath)
Command.Flags().StringVar(&vOut, flagOutFile, "",
"File to save object payload")
Command.Flags().BoolVar(&vHeader, flagHeader, false, "Inspect only header")
Command.Flags().BoolVar(&vWriteCache, flagWriteCache, false,
"Process write-cache")
}
func objectInspectCmd(cmd *cobra.Command, _ []string) {
var addr oid.Address
err := addr.DecodeString(vAddress)
common.ExitOnErr(cmd, common.Errf("invalid address argument: %w", err))
if vOut == "" && !vHeader {
common.ExitOnErr(cmd, fmt.Errorf("either --%s or --%s flag must be provided",
flagHeader, flagOutFile))
}
if vWriteCache {
db, err := writecache.OpenDB(vPath, true)
common.ExitOnErr(cmd, common.Errf("could not open write-cache db: %w", err))
defer db.Close()
data, err := writecache.Get(db, []byte(vAddress))
common.ExitOnErr(cmd, common.Errf("could not fetch object: %w", err))
printObjectInfo(cmd, data)
return
}
blz := blobovnicza.New(
blobovnicza.WithPath(vPath),
blobovnicza.WithReadOnly(true))
common.ExitOnErr(cmd, blz.Open())
defer blz.Close()
var prm blobovnicza.GetPrm
prm.SetAddress(addr)
res, err := blz.Get(prm)
common.ExitOnErr(cmd, common.Errf("could not fetch object: %w", err))
printObjectInfo(cmd, res.Object())
}
func printContainerID(cmd *cobra.Command, recv func() (cid.ID, bool)) {
var val string
id, ok := recv()
if ok {
val = id.String()
} else {
val = "<empty>"
}
cmd.Println("CID:", val)
}
func printObjectID(cmd *cobra.Command, recv func() (oid.ID, bool)) {
var val string
id, ok := recv()
if ok {
val = id.String()
} else {
val = "<empty>"
}
cmd.Println("ID:", val)
}
func printObjectInfo(cmd *cobra.Command, data []byte) {
obj := object.New()
err := obj.Unmarshal(data)
common.ExitOnErr(cmd, common.Errf("can't unmarshal object: %w", err))
if vHeader {
cmd.Println("Version:", obj.Version())
cmd.Println("Type:", obj.Type())
printContainerID(cmd, obj.ContainerID)
printObjectID(cmd, obj.ID)
cmd.Println("Owner:", obj.OwnerID())
cmd.Println("CreatedAt:", obj.CreationEpoch())
cmd.Println("PayloadSize:", obj.PayloadSize())
cmd.Println("Attributes:")
for _, attr := range obj.Attributes() {
cmd.Printf(" %s: %s\n", attr.Key(), attr.Value())
}
}
if vOut != "" {
err := os.WriteFile(vOut, obj.Payload(), 0644)
common.ExitOnErr(cmd, common.Errf("couldn't write payload: %w", err))
}
}