forked from TrueCloudLab/frostfs-node
107 lines
3 KiB
Go
107 lines
3 KiB
Go
package container
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import (
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"fmt"
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"strings"
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containerContract "github.com/nspcc-dev/neofs-contract/container"
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core "github.com/nspcc-dev/neofs-node/pkg/core/container"
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"github.com/nspcc-dev/neofs-node/pkg/morph/client"
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"github.com/nspcc-dev/neofs-sdk-go/container"
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cid "github.com/nspcc-dev/neofs-sdk-go/container/id"
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"github.com/nspcc-dev/neofs-sdk-go/session"
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"github.com/nspcc-dev/neofs-sdk-go/signature"
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)
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type containerSource Client
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func (x *containerSource) Get(cid *cid.ID) (*container.Container, error) {
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return Get((*Client)(x), cid)
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}
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// AsContainerSource provides container Source interface
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// from Wrapper instance.
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func AsContainerSource(w *Client) core.Source {
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return (*containerSource)(w)
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}
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// Get marshals container ID, and passes it to Wrapper's Get method.
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//
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// Returns error if cid is nil.
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func Get(c *Client, cid *cid.ID) (*container.Container, error) {
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return c.Get(cid.ToV2().GetValue())
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}
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// Get reads the container from NeoFS system by binary identifier
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// through Container contract call.
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//
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// If an empty slice is returned for the requested identifier,
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// storage.ErrNotFound error is returned.
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func (c *Client) Get(cid []byte) (*container.Container, error) {
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prm := client.TestInvokePrm{}
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prm.SetMethod(getMethod)
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prm.SetArgs(cid)
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res, err := c.client.TestInvoke(prm)
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if err != nil {
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if strings.Contains(err.Error(), containerContract.NotFoundError) {
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return nil, core.ErrNotFound
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}
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return nil, fmt.Errorf("could not perform test invocation (%s): %w", getMethod, err)
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} else if ln := len(res); ln != 1 {
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return nil, fmt.Errorf("unexpected stack item count (%s): %d", getMethod, ln)
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}
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arr, err := client.ArrayFromStackItem(res[0])
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if err != nil {
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return nil, fmt.Errorf("could not get item array of container (%s): %w", getMethod, err)
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}
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if len(arr) != 4 {
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return nil, fmt.Errorf("unexpected container stack item count (%s): %d", getMethod, len(arr))
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}
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cnrBytes, err := client.BytesFromStackItem(arr[0])
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if err != nil {
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return nil, fmt.Errorf("could not get byte array of container (%s): %w", getMethod, err)
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}
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sigBytes, err := client.BytesFromStackItem(arr[1])
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if err != nil {
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return nil, fmt.Errorf("could not get byte array of container signature (%s): %w", getMethod, err)
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}
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pub, err := client.BytesFromStackItem(arr[2])
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if err != nil {
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return nil, fmt.Errorf("could not get byte array of public key (%s): %w", getMethod, err)
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}
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tokBytes, err := client.BytesFromStackItem(arr[3])
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if err != nil {
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return nil, fmt.Errorf("could not get byte array of session token (%s): %w", getMethod, err)
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}
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cnr := container.New()
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if err := cnr.Unmarshal(cnrBytes); err != nil {
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// use other major version if there any
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return nil, fmt.Errorf("can't unmarshal container: %w", err)
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}
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if len(tokBytes) > 0 {
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tok := session.NewToken()
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err = tok.Unmarshal(tokBytes)
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if err != nil {
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return nil, fmt.Errorf("could not unmarshal session token: %w", err)
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}
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cnr.SetSessionToken(tok)
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}
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sig := signature.New()
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sig.SetKey(pub)
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sig.SetSign(sigBytes)
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cnr.SetSignature(sig)
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return cnr, nil
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}
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