92fb384c09
With snapshot method node can get previous network maps from previous epoch. Signed-off-by: Alex Vanin <alexey@nspcc.ru>
111 lines
2.8 KiB
Go
111 lines
2.8 KiB
Go
package netmap
|
|
|
|
import (
|
|
"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
|
|
"github.com/nspcc-dev/neofs-node/pkg/morph/client"
|
|
"github.com/pkg/errors"
|
|
)
|
|
|
|
// GetNetMapArgs groups the arguments
|
|
// of get network map test invoke call.
|
|
type GetNetMapArgs struct {
|
|
}
|
|
|
|
// GetSnapshotArgs groups the arguments
|
|
// of get netmap snapshot test invoke call.
|
|
type GetSnapshotArgs struct {
|
|
diff uint64
|
|
}
|
|
|
|
// GetNetMapValues groups the stack parameters
|
|
// returned by get network map test invoke.
|
|
type GetNetMapValues struct {
|
|
peers [][]byte
|
|
}
|
|
|
|
const nodeInfoFixedPrmNumber = 1
|
|
|
|
// SetDiff sets argument for snapshot method of
|
|
// netmap contract.
|
|
func (g *GetSnapshotArgs) SetDiff(d uint64) {
|
|
g.diff = d
|
|
}
|
|
|
|
// Peers return the list of peers from
|
|
// network map in a binary format.
|
|
func (g GetNetMapValues) Peers() [][]byte {
|
|
return g.peers
|
|
}
|
|
|
|
// NetMap performs the test invoke of get network map
|
|
// method of NeoFS Netmap contract.
|
|
func (c *Client) NetMap(_ GetNetMapArgs) (*GetNetMapValues, error) {
|
|
prms, err := c.client.TestInvoke(
|
|
c.netMapMethod,
|
|
)
|
|
if err != nil {
|
|
return nil, errors.Wrapf(err,
|
|
"could not perform test invocation (%s)",
|
|
c.netMapMethod)
|
|
}
|
|
|
|
return peersFromStackItems(prms, c.netMapMethod)
|
|
}
|
|
|
|
// NetMap performs the test invoke of get snapshot of network map
|
|
// from NeoFS Netmap contract. Contract saves only one previous epoch,
|
|
// so all invokes with diff > 1 return error.
|
|
func (c *Client) Snapshot(a GetSnapshotArgs) (*GetNetMapValues, error) {
|
|
prms, err := c.client.TestInvoke(
|
|
c.snapshotMethod,
|
|
int64(a.diff),
|
|
)
|
|
if err != nil {
|
|
return nil, errors.Wrapf(err,
|
|
"could not perform test invocation (%s)",
|
|
c.netMapMethod)
|
|
}
|
|
|
|
return peersFromStackItems(prms, c.snapshotMethod)
|
|
}
|
|
|
|
func peersFromStackItems(stack []stackitem.Item, method string) (*GetNetMapValues, error) {
|
|
if ln := len(stack); ln != 1 {
|
|
return nil, errors.Errorf("unexpected stack item count (%s): %d",
|
|
method, ln)
|
|
}
|
|
|
|
peers, err := client.ArrayFromStackItem(stack[0])
|
|
if err != nil {
|
|
return nil, errors.Wrapf(err,
|
|
"could not get stack item array from stack item (%s)",
|
|
method)
|
|
}
|
|
|
|
res := &GetNetMapValues{
|
|
peers: make([][]byte, 0, len(peers)),
|
|
}
|
|
|
|
for i := range peers {
|
|
peer, err := peerInfoFromStackItem(peers[i])
|
|
if err != nil {
|
|
return nil, errors.Wrapf(err,
|
|
"could not parse stack item (Peer #%d)", i)
|
|
}
|
|
|
|
res.peers = append(res.peers, peer)
|
|
}
|
|
|
|
return res, nil
|
|
}
|
|
|
|
func peerInfoFromStackItem(prm stackitem.Item) ([]byte, error) {
|
|
prms, err := client.ArrayFromStackItem(prm)
|
|
if err != nil {
|
|
return nil, errors.Wrapf(err, "could not get stack item array (PeerInfo)")
|
|
} else if ln := len(prms); ln != nodeInfoFixedPrmNumber {
|
|
return nil, errors.Errorf("unexpected stack item count (PeerInfo): expected %d, has %d", 1, ln)
|
|
}
|
|
|
|
return client.BytesFromStackItem(prms[0])
|
|
}
|