70 lines
1.8 KiB
Go
70 lines
1.8 KiB
Go
package subnetevents
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import (
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"fmt"
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"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/morph/client"
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"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/morph/event"
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"github.com/nspcc-dev/neo-go/pkg/core/state"
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"github.com/nspcc-dev/neo-go/pkg/util"
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)
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// RemoveNode structure of subnet.RemoveNode notification from morph chain.
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type RemoveNode struct {
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subnetID []byte
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nodeKey []byte
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// txHash is used in notary environmental
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// for calculating unique but same for
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// all notification receivers values.
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txHash util.Uint256
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}
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// MorphEvent implements Neo:Morph Event interface.
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func (RemoveNode) MorphEvent() {}
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// SubnetworkID returns a marshalled subnetID structure, defined in API.
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func (rn RemoveNode) SubnetworkID() []byte { return rn.subnetID }
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// Node is public key of the nodeKey that is being deleted.
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func (rn RemoveNode) Node() []byte { return rn.nodeKey }
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// TxHash returns hash of the TX with RemoveNode
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// notification.
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func (rn RemoveNode) TxHash() util.Uint256 { return rn.txHash }
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const expectedItemNumRemoveNode = 2
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// ParseRemoveNode parses notification into subnet event structure.
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//
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// Expects 2 stack items.
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func ParseRemoveNode(e *state.ContainedNotificationEvent) (event.Event, error) {
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var (
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ev RemoveNode
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err error
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)
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params, err := event.ParseStackArray(e)
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if err != nil {
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return nil, fmt.Errorf("could not parse stack items from notify event: %w", err)
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}
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if ln := len(params); ln != expectedItemNumRemoveNode {
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return nil, event.WrongNumberOfParameters(expectedItemNumRemoveNode, ln)
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}
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ev.subnetID, err = client.BytesFromStackItem(params[0])
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if err != nil {
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return nil, fmt.Errorf("could not get raw subnetID: %w", err)
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}
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ev.nodeKey, err = client.BytesFromStackItem(params[1])
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if err != nil {
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return nil, fmt.Errorf("could not get raw public key of the node: %w", err)
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}
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ev.txHash = e.Container
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return ev, nil
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}
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