44 lines
1 KiB
Go
44 lines
1 KiB
Go
package subnetevents
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import (
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"fmt"
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subnetid "github.com/nspcc-dev/neofs-sdk-go/subnet/id"
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)
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// Delete represents a notification about NeoFS subnet removal.
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// Generated by a contract when intending to delete a subnet.
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type Delete interface {
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// Contains the ID of the subnet to be removed.
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eventWithID
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}
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// DeleteValidator asserts intent to remove a subnet.
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type DeleteValidator struct{}
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// Assert processes the attempt to remove a subnet. It approves the removal through nil return.
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//
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// All read errors of Delete are forwarded.
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//
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// It returns an error on:
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// * zero subnet creation;
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// * empty ID or different from the one wired into info;
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// * empty owner ID or different from the one wired into info.
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func (x DeleteValidator) Assert(event Delete) error {
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var err error
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// read ID
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var id subnetid.ID
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if err = event.ReadID(&id); err != nil {
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return fmt.Errorf("read ID: %w", err)
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}
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// prevent zero subnet removal
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if subnetid.IsZero(id) {
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return zeroSubnetOp{
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op: "removal",
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}
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}
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return nil
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}
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