frostfs-node/pkg/morph/client/container/get.go
Evgenii Stratonikov c34cfa1f35 [#625] client/container: remove intermediate wrapper
Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>
2022-02-08 09:43:54 +03:00

113 lines
3.7 KiB
Go

package container
import (
"fmt"
"strings"
core "github.com/nspcc-dev/neofs-node/pkg/core/container"
"github.com/nspcc-dev/neofs-node/pkg/morph/client"
"github.com/nspcc-dev/neofs-sdk-go/container"
cid "github.com/nspcc-dev/neofs-sdk-go/container/id"
"github.com/nspcc-dev/neofs-sdk-go/session"
"github.com/nspcc-dev/neofs-sdk-go/signature"
)
type containerSource Client
func (x *containerSource) Get(cid *cid.ID) (*container.Container, error) {
return Get((*Client)(x), cid)
}
// AsContainerSource provides container Source interface
// from Wrapper instance.
func AsContainerSource(w *Client) core.Source {
return (*containerSource)(w)
}
// Get marshals container ID, and passes it to Wrapper's Get method.
//
// Returns error if cid is nil.
func Get(c *Client, cid *cid.ID) (*container.Container, error) {
return c.Get(cid.ToV2().GetValue())
}
// Get reads the container from NeoFS system by binary identifier
// through Container contract call.
//
// If an empty slice is returned for the requested identifier,
// storage.ErrNotFound error is returned.
func (c *Client) Get(cid []byte) (*container.Container, error) {
prm := client.TestInvokePrm{}
prm.SetMethod(getMethod)
prm.SetArgs(cid)
res, err := c.client.TestInvoke(prm)
if err != nil {
// TODO(fyrchik): reuse messages from container contract.
// Currently there are some dependency problems:
// github.com/nspcc-dev/neofs-node/pkg/innerring imports
// github.com/nspcc-dev/neofs-sdk-go/audit imports
// github.com/nspcc-dev/neofs-api-go/v2/audit: ambiguous import: found package github.com/nspcc-dev/neofs-api-go/v2/audit in multiple modules:
// github.com/nspcc-dev/neofs-api-go v1.27.1 (/home/dzeta/go/pkg/mod/github.com/nspcc-dev/neofs-api-go@v1.27.1/v2/audit)
// github.com/nspcc-dev/neofs-api-go/v2 v2.11.0-pre.0.20211201134523-3604d96f3fe1 (/home/dzeta/go/pkg/mod/github.com/nspcc-dev/neofs-api-go/v2@v2.11.0-pre.0.20211201134523-3604d96f3fe1/audit)
if strings.Contains(err.Error(), "container does not exist") {
return nil, core.ErrNotFound
}
return nil, fmt.Errorf("could not perform test invocation (%s): %w", getMethod, err)
} else if ln := len(res); ln != 1 {
return nil, fmt.Errorf("unexpected stack item count (%s): %d", getMethod, ln)
}
arr, err := client.ArrayFromStackItem(res[0])
if err != nil {
return nil, fmt.Errorf("could not get item array of container (%s): %w", getMethod, err)
}
if len(arr) != 4 {
return nil, fmt.Errorf("unexpected container stack item count (%s): %d", getMethod, len(arr))
}
cnrBytes, err := client.BytesFromStackItem(arr[0])
if err != nil {
return nil, fmt.Errorf("could not get byte array of container (%s): %w", getMethod, err)
}
sigBytes, err := client.BytesFromStackItem(arr[1])
if err != nil {
return nil, fmt.Errorf("could not get byte array of container signature (%s): %w", getMethod, err)
}
pub, err := client.BytesFromStackItem(arr[2])
if err != nil {
return nil, fmt.Errorf("could not get byte array of public key (%s): %w", getMethod, err)
}
tokBytes, err := client.BytesFromStackItem(arr[3])
if err != nil {
return nil, fmt.Errorf("could not get byte array of session token (%s): %w", getMethod, err)
}
cnr := container.New()
if err := cnr.Unmarshal(cnrBytes); err != nil {
// use other major version if there any
return nil, fmt.Errorf("can't unmarshal container: %w", err)
}
if len(tokBytes) > 0 {
tok := session.NewToken()
err = tok.Unmarshal(tokBytes)
if err != nil {
return nil, fmt.Errorf("could not unmarshal session token: %w", err)
}
cnr.SetSessionToken(tok)
}
sig := signature.New()
sig.SetKey(pub)
sig.SetSign(sigBytes)
cnr.SetSignature(sig)
return cnr, nil
}