[#303] morph/netmap: Implement getting network map snapshot by epoch
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
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d58e28afee
commit
9ea75e51b2
3 changed files with 78 additions and 2 deletions
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@ -35,6 +35,7 @@ type cfg struct {
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newEpochMethod, // new epoch method name for invocation
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netMapMethod, // get network map method name
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snapshotMethod, // get network map snapshot method name
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epochSnapshotMethod, // get network map snapshot by epoch method name
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updateStateMethod, // update state method name for invocation
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innerRingListMethod, // IR list method name for invocation
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epochMethod, // get epoch number method name
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@ -50,6 +51,8 @@ const (
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defaultInnerRIngListMethod = "innerRingList" // default IR list method name
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defaultEpochMethod = "epoch" // default get epoch number method name
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defaultConfigMethod = "config" // default get config value method name
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defaultEpochSnapshotMethod = "snapshotByEpoch" // default get network map snapshot by epoch method name
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)
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func defaultConfig() *cfg {
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@ -58,6 +61,7 @@ func defaultConfig() *cfg {
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newEpochMethod: defaultNewEpochMethod,
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netMapMethod: defaultNetMapMethod,
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snapshotMethod: defaultSnapshotMethod,
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epochSnapshotMethod: defaultEpochSnapshotMethod,
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updateStateMethod: defaultUpdateStateMethod,
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innerRingListMethod: defaultInnerRIngListMethod,
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epochMethod: defaultEpochMethod,
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@ -194,3 +198,17 @@ func WithConfigMethod(n string) Option {
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}
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}
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}
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// WithEpochSnapshotMethod returns a client constructor option that
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// specifies the method name of snapshot by value receiving operation.
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//
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// Ignores empty value.
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//
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// If option not provided, "snapshotByValue" is used.
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func WithEpochSnapshotMethod(n string) Option {
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return func(c *cfg) {
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if n != "" {
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c.epochSnapshotMethod = n
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}
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}
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}
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@ -23,6 +23,18 @@ type GetNetMapValues struct {
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peers [][]byte
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}
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// EpochSnapshotArgs groups the arguments
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// of snapshot by epoch test invoke call.
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type EpochSnapshotArgs struct {
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epoch uint64
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}
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// EpochSnapshotValues groups the stack parameters
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// returned by snapshot by epoch test invoke.
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type EpochSnapshotValues struct {
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*GetNetMapValues
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}
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const nodeInfoFixedPrmNumber = 1
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// SetDiff sets argument for snapshot method of
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@ -31,6 +43,11 @@ func (g *GetSnapshotArgs) SetDiff(d uint64) {
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g.diff = d
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}
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// SetEpoch sets epoch number to get snapshot.
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func (a *EpochSnapshotArgs) SetEpoch(d uint64) {
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a.epoch = d
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}
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// Peers return the list of peers from
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// network map in a binary format.
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func (g GetNetMapValues) Peers() [][]byte {
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@ -69,6 +86,29 @@ func (c *Client) Snapshot(a GetSnapshotArgs) (*GetNetMapValues, error) {
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return peersFromStackItems(prms, c.snapshotMethod)
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}
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// EpochSnapshot performs the test invoke of get snapshot of network map by epoch
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// from NeoFS Netmap contract.
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func (c *Client) EpochSnapshot(args EpochSnapshotArgs) (*EpochSnapshotValues, error) {
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prms, err := c.client.TestInvoke(
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c.epochSnapshotMethod,
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int64(args.epoch),
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)
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if err != nil {
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return nil, errors.Wrapf(err,
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"could not perform test invocation (%s)",
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c.epochSnapshotMethod)
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}
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nmVals, err := peersFromStackItems(prms, c.epochSnapshotMethod)
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if err != nil {
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return nil, err
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}
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return &EpochSnapshotValues{
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GetNetMapValues: nmVals,
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}, nil
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}
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func peersFromStackItems(stack []stackitem.Item, method string) (*GetNetMapValues, error) {
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if ln := len(stack); ln != 1 {
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return nil, errors.Errorf("unexpected stack item count (%s): %d",
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@ -14,12 +14,30 @@ func (w Wrapper) GetNetMap(diff uint64) (*netmap.Netmap, error) {
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args := client.GetSnapshotArgs{}
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args.SetDiff(diff)
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peers, err := w.client.Snapshot(args)
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vals, err := w.client.Snapshot(args)
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if err != nil {
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return nil, err
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}
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rawPeers := peers.Peers() // slice of serialized node infos
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return unmarshalNetmap(vals.Peers())
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}
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// GetNetMapByEpoch receives information list about storage nodes
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// through the Netmap contract call, composes network map
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// from them and returns it. Returns snapshot of the specified epoch number.
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func (w Wrapper) GetNetMapByEpoch(epoch uint64) (*netmap.Netmap, error) {
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args := client.EpochSnapshotArgs{}
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args.SetEpoch(epoch)
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vals, err := w.client.EpochSnapshot(args)
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if err != nil {
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return nil, err
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}
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return unmarshalNetmap(vals.Peers())
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}
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func unmarshalNetmap(rawPeers [][]byte) (*netmap.Netmap, error) {
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infos := make([]netmap.NodeInfo, 0, len(rawPeers))
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for _, peer := range rawPeers {
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