forked from TrueCloudLab/frostfs-node
7c1babb7d6
There is a need to sync container-related caching mechanism with the actual Sidechain changes. To do this, node should be able to listen incoming notifications about container ops. Define `PutSuccess` / `DeleteSuccess` notification event's parsers. Subscribe to these events in node app. As initial implementation node will log event receipts. Later handling is going to be practically complicated. Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
123 lines
3.3 KiB
Go
123 lines
3.3 KiB
Go
package container
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import (
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"fmt"
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"github.com/nspcc-dev/neo-go/pkg/core/state"
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"github.com/nspcc-dev/neo-go/pkg/network/payload"
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"github.com/nspcc-dev/neofs-node/pkg/morph/client"
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"github.com/nspcc-dev/neofs-node/pkg/morph/event"
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cid "github.com/nspcc-dev/neofs-sdk-go/container/id"
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)
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// Delete structure of container.Delete notification from morph chain.
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type Delete struct {
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containerID []byte
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signature []byte
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token []byte
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// For notary notifications only.
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// Contains raw transactions of notary request.
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notaryRequest *payload.P2PNotaryRequest
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}
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// MorphEvent implements Neo:Morph Event interface.
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func (Delete) MorphEvent() {}
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// ContainerID is a marshalled container structure, defined in API.
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func (d Delete) ContainerID() []byte { return d.containerID }
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// Signature of marshalled container by container owner.
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func (d Delete) Signature() []byte { return d.signature }
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// SessionToken returns binary token of the session
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// within which the eACL was set.
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func (d Delete) SessionToken() []byte {
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return d.token
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}
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// NotaryRequest returns raw notary request if notification
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// was received via notary service. Otherwise, returns nil.
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func (d Delete) NotaryRequest() *payload.P2PNotaryRequest {
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return d.notaryRequest
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}
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const expectedItemNumDelete = 3
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// ParseDelete from notification into container event structure.
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//
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// Expects 3 stack items.
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func ParseDelete(e *state.ContainedNotificationEvent) (event.Event, error) {
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var (
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ev Delete
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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 != expectedItemNumDelete {
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return nil, event.WrongNumberOfParameters(expectedItemNumDelete, ln)
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}
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// parse container
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ev.containerID, err = client.BytesFromStackItem(params[0])
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if err != nil {
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return nil, fmt.Errorf("could not get container: %w", err)
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}
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// parse signature
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ev.signature, err = client.BytesFromStackItem(params[1])
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if err != nil {
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return nil, fmt.Errorf("could not get signature: %w", err)
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}
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// parse session token
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ev.token, err = client.BytesFromStackItem(params[2])
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if err != nil {
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return nil, fmt.Errorf("could not get session token: %w", err)
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}
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return ev, nil
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}
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// DeleteSuccess structures notification event of successful container removal
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// thrown by Container contract.
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type DeleteSuccess struct {
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// Identifier of the removed container.
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ID cid.ID
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}
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// MorphEvent implements Neo:Morph Event interface.
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func (DeleteSuccess) MorphEvent() {}
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// ParseDeleteSuccess decodes notification event thrown by Container contract into
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// DeleteSuccess and returns it as event.Event.
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func ParseDeleteSuccess(e *state.ContainedNotificationEvent) (event.Event, error) {
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items, err := event.ParseStackArray(e)
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if err != nil {
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return nil, fmt.Errorf("parse stack array from raw notification event: %w", err)
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}
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const expectedItemNumDeleteSuccess = 1
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if ln := len(items); ln != expectedItemNumDeleteSuccess {
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return nil, event.WrongNumberOfParameters(expectedItemNumDeleteSuccess, ln)
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}
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binID, err := client.BytesFromStackItem(items[0])
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if err != nil {
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return nil, fmt.Errorf("parse container ID item: %w", err)
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}
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var res DeleteSuccess
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err = res.ID.Decode(binID)
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if err != nil {
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return nil, fmt.Errorf("decode container ID: %w", err)
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}
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return res, nil
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}
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