115 lines
3.4 KiB
Go
115 lines
3.4 KiB
Go
package container
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import (
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"crypto/sha256"
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"fmt"
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"strings"
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"git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/refs"
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containerContract "git.frostfs.info/TrueCloudLab/frostfs-contract/container"
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containercore "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/container"
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"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/morph/client"
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apistatus "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client/status"
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cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
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"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/session"
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)
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type containerSource Client
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func (x *containerSource) Get(cnr cid.ID) (*containercore.Container, error) {
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return Get((*Client)(x), cnr)
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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) containercore.Source {
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return (*containerSource)(w)
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}
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type getContainer interface {
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Get(cid []byte) (*containercore.Container, error)
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}
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// Get marshals container ID, and passes it to Wrapper's Get method.
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func Get(c getContainer, cnr cid.ID) (*containercore.Container, error) {
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binCnr := make([]byte, sha256.Size)
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cnr.Encode(binCnr)
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return c.Get(binCnr)
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}
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// Get reads the container from FrostFS 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) (*containercore.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, new(apistatus.ContainerNotFound)
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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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var cnr containercore.Container
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if err := cnr.Value.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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cnr.Session = new(session.Container)
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err = cnr.Session.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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}
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// TODO(@cthulhu-rider): #468 implement and use another approach to avoid conversion
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var sigV2 refs.Signature
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sigV2.SetKey(pub)
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sigV2.SetSign(sigBytes)
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sigV2.SetScheme(refs.ECDSA_RFC6979_SHA256)
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err = cnr.Signature.ReadFromV2(sigV2)
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return &cnr, err
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}
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