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head.go
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head.go
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package object
import (
"encoding/hex"
"errors"
"fmt"
"os"
internalclient "github.com/nspcc-dev/neofs-node/cmd/neofs-cli/internal/client"
"github.com/nspcc-dev/neofs-node/cmd/neofs-cli/internal/common"
"github.com/nspcc-dev/neofs-node/cmd/neofs-cli/internal/commonflags"
"github.com/nspcc-dev/neofs-node/cmd/neofs-cli/internal/key"
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"
)
var objectHeadCmd = &cobra.Command{
Use: "head",
Short: "Get object header",
Long: "Get object header",
Args: cobra.NoArgs,
Run: getObjectHeader,
}
func initObjectHeadCmd() {
commonflags.Init(objectHeadCmd)
initFlagSession(objectHeadCmd, "HEAD")
flags := objectHeadCmd.Flags()
flags.String(commonflags.CIDFlag, "", commonflags.CIDFlagUsage)
_ = objectHeadCmd.MarkFlagRequired(commonflags.CIDFlag)
flags.String(commonflags.OIDFlag, "", commonflags.OIDFlagUsage)
_ = objectHeadCmd.MarkFlagRequired(commonflags.OIDFlag)
flags.String(fileFlag, "", "File to write header to. Default: stdout.")
flags.Bool("main-only", false, "Return only main fields")
flags.Bool(commonflags.JSON, false, "Marshal output in JSON")
flags.Bool("proto", false, "Marshal output in Protobuf")
flags.Bool(rawFlag, false, rawFlagDesc)
}
func getObjectHeader(cmd *cobra.Command, _ []string) {
ctx, cancel := commonflags.GetCommandContext(cmd)
defer cancel()
var cnr cid.ID
var obj oid.ID
objAddr := readObjectAddress(cmd, &cnr, &obj)
mainOnly, _ := cmd.Flags().GetBool("main-only")
pk := key.GetOrGenerate(cmd)
cli := internalclient.GetSDKClientByFlag(ctx, cmd, commonflags.RPC)
var prm internalclient.HeadObjectPrm
prm.SetClient(cli)
prm.SetPrivateKey(*pk)
Prepare(cmd, &prm)
readSession(cmd, &prm, pk, cnr, obj)
raw, _ := cmd.Flags().GetBool(rawFlag)
prm.SetRawFlag(raw)
prm.SetAddress(objAddr)
prm.SetMainOnlyFlag(mainOnly)
res, err := internalclient.HeadObject(ctx, prm)
if err != nil {
if ok := printSplitInfoErr(cmd, err); ok {
return
}
common.ExitOnErr(cmd, "rpc error: %w", err)
}
err = saveAndPrintHeader(cmd, res.Header(), cmd.Flag(fileFlag).Value.String())
common.ExitOnErr(cmd, "", err)
}
func saveAndPrintHeader(cmd *cobra.Command, obj *object.Object, filename string) error {
bs, err := marshalHeader(cmd, obj)
if err != nil {
return fmt.Errorf("could not marshal header: %w", err)
}
if len(bs) != 0 {
if filename == "" {
cmd.Println(string(bs))
return nil
}
err = os.WriteFile(filename, bs, os.ModePerm)
if err != nil {
return fmt.Errorf("could not write header to file: %w", err)
}
cmd.Printf("[%s] Header successfully saved.", filename)
}
return printHeader(cmd, obj)
}
func marshalHeader(cmd *cobra.Command, hdr *object.Object) ([]byte, error) {
toJSON, _ := cmd.Flags().GetBool(commonflags.JSON)
toProto, _ := cmd.Flags().GetBool("proto")
switch {
case toJSON && toProto:
return nil, errors.New("'--json' and '--proto' flags are mutually exclusive")
case toJSON:
return hdr.MarshalJSON()
case toProto:
return hdr.Marshal()
default:
return nil, nil
}
}
func printObjectID(cmd *cobra.Command, recv func() (oid.ID, bool)) {
var strID string
id, ok := recv()
if ok {
strID = id.String()
} else {
strID = "<empty>"
}
cmd.Printf("ID: %s\n", strID)
}
func printContainerID(cmd *cobra.Command, recv func() (cid.ID, bool)) {
var strID string
id, ok := recv()
if ok {
strID = id.String()
} else {
strID = "<empty>"
}
cmd.Printf("CID: %s\n", strID)
}
func printHeader(cmd *cobra.Command, obj *object.Object) error {
printObjectID(cmd, obj.ID)
printContainerID(cmd, obj.ContainerID)
cmd.Printf("Owner: %s\n", obj.OwnerID())
cmd.Printf("CreatedAt: %d\n", obj.CreationEpoch())
cmd.Printf("Size: %d\n", obj.PayloadSize())
common.PrintChecksum(cmd, "HomoHash", obj.PayloadHomomorphicHash)
common.PrintChecksum(cmd, "Checksum", obj.PayloadChecksum)
cmd.Printf("Type: %s\n", obj.Type())
cmd.Println("Attributes:")
for _, attr := range obj.Attributes() {
if attr.Key() == object.AttributeTimestamp {
cmd.Printf(" %s=%s (%s)\n",
attr.Key(),
attr.Value(),
common.PrettyPrintUnixTime(attr.Value()))
continue
}
cmd.Printf(" %s=%s\n", attr.Key(), attr.Value())
}
if signature := obj.Signature(); signature != nil {
cmd.Print("ID signature:\n")
cmd.Printf(" public key: %s\n", hex.EncodeToString(signature.PublicKeyBytes()))
cmd.Printf(" signature: %s\n", hex.EncodeToString(signature.Value()))
}
return printSplitHeader(cmd, obj)
}
func printSplitHeader(cmd *cobra.Command, obj *object.Object) error {
if splitID := obj.SplitID(); splitID != nil {
cmd.Printf("Split ID: %s\n", splitID)
}
if oid, ok := obj.ParentID(); ok {
cmd.Printf("Split ParentID: %s\n", oid)
}
if prev, ok := obj.PreviousID(); ok {
cmd.Printf("Split PreviousID: %s\n", prev)
}
if first, ok := obj.FirstID(); ok {
cmd.Printf("Split FirstID: %s\n", first)
}
for _, child := range obj.Children() {
cmd.Printf("Split ChildID: %s\n", child.String())
}
parent := obj.Parent()
if parent != nil {
cmd.Print("\nSplit Parent Header:\n")
return printHeader(cmd, parent)
}
return nil
}