forked from TrueCloudLab/frostfs-node
[#35] Add snapshot method for morph/netmap client
With snapshot method node can get previous network maps from previous epoch. Signed-off-by: Alex Vanin <alexey@nspcc.ru>
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parent
c410b23c97
commit
92fb384c09
2 changed files with 53 additions and 9 deletions
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@ -34,6 +34,7 @@ type cfg struct {
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addPeerMethod, // add peer method name for invocation
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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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updateStateMethod, // update state method name for invocation
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innerRingListMethod string // IR list method name for invocation
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}
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@ -42,6 +43,7 @@ const (
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defaultAddPeerMethod = "addPeer" // default add peer method name
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defaultNewEpochMethod = "newEpoch" // default new epoch method name
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defaultNetMapMethod = "netmap" // default get network map method name
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defaultSnapshotMethod = "snapshot" // default get network map snapshot method name
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defaultUpdateStateMethod = "updateState" // default update state method name
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defaultInnerRIngListMethod = "innerRingList" // default IR list method name
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)
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@ -51,6 +53,7 @@ func defaultConfig() *cfg {
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addPeerMethod: defaultAddPeerMethod,
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newEpochMethod: defaultNewEpochMethod,
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netMapMethod: defaultNetMapMethod,
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snapshotMethod: defaultSnapshotMethod,
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updateStateMethod: defaultUpdateStateMethod,
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innerRingListMethod: defaultInnerRIngListMethod,
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}
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@ -11,6 +11,12 @@ import (
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type GetNetMapArgs struct {
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}
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// GetSnapshotArgs groups the arguments
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// of get netmap snapshot test invoke call.
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type GetSnapshotArgs struct {
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diff uint64
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}
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// GetNetMapValues groups the stack parameters
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// returned by get network map test invoke.
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type GetNetMapValues struct {
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@ -19,6 +25,12 @@ type GetNetMapValues struct {
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const nodeInfoFixedPrmNumber = 1
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// SetDiff sets argument for snapshot method of
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// netmap contract.
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func (g *GetSnapshotArgs) SetDiff(d uint64) {
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g.diff = 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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@ -32,24 +44,53 @@ func (c *Client) NetMap(_ GetNetMapArgs) (*GetNetMapValues, error) {
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c.netMapMethod,
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)
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if err != nil {
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return nil, errors.Wrapf(err, "could not perform test invocation (%s)", c.netMapMethod)
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} else if ln := len(prms); ln != 1 {
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return nil, errors.Errorf("unexpected stack item count (%s): %d", c.netMapMethod, ln)
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return nil, errors.Wrapf(err,
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"could not perform test invocation (%s)",
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c.netMapMethod)
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}
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prms, err = client.ArrayFromStackItem(prms[0])
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return peersFromStackItems(prms, c.netMapMethod)
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}
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// NetMap performs the test invoke of get snapshot of network map
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// from NeoFS Netmap contract. Contract saves only one previous epoch,
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// so all invokes with diff > 1 return error.
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func (c *Client) Snapshot(a GetSnapshotArgs) (*GetNetMapValues, error) {
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prms, err := c.client.TestInvoke(
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c.snapshotMethod,
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int64(a.diff),
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)
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if err != nil {
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return nil, errors.Wrapf(err, "could not get stack item array from stack item (%s)", c.netMapMethod)
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return nil, errors.Wrapf(err,
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"could not perform test invocation (%s)",
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c.netMapMethod)
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}
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return peersFromStackItems(prms, c.snapshotMethod)
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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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method, ln)
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}
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peers, err := client.ArrayFromStackItem(stack[0])
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if err != nil {
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return nil, errors.Wrapf(err,
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"could not get stack item array from stack item (%s)",
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method)
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}
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res := &GetNetMapValues{
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peers: make([][]byte, 0, len(prms)),
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peers: make([][]byte, 0, len(peers)),
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}
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for i := range prms {
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peer, err := peerInfoFromStackItem(prms[i])
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for i := range peers {
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peer, err := peerInfoFromStackItem(peers[i])
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if err != nil {
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return nil, errors.Wrapf(err, "could not parse stack item (Peer #%d)", i)
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return nil, errors.Wrapf(err,
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"could not parse stack item (Peer #%d)", i)
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}
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res.peers = append(res.peers, peer)
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