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event.go
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event.go
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/*
* This file is part of the KubeVirt project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Copyright 2021 Red Hat, Inc.
*
*/
package cli
import (
"fmt"
"libvirt.org/go/libvirt"
)
type DomainEventDeviceRemoved struct {
connection Connection
domain VirDomain
registrationID int
callback libvirt.DomainEventDeviceRemovedCallback
eventChan <-chan interface{}
}
func NewDomainEventDeviceRemoved(
connection Connection,
domain VirDomain,
callback libvirt.DomainEventDeviceRemovedCallback, eventChan <-chan interface{}) *DomainEventDeviceRemoved {
return &DomainEventDeviceRemoved{
connection: connection,
domain: domain,
callback: callback,
eventChan: eventChan,
}
}
func (c *DomainEventDeviceRemoved) Register() error {
id, err := c.connection.VolatileDomainEventDeviceRemovedRegister(c.domain, c.callback)
if err != nil {
return fmt.Errorf("register callback failure: %v", err)
}
c.registrationID = id
return nil
}
func (c *DomainEventDeviceRemoved) Deregister() error {
if c.registrationID == 0 {
return fmt.Errorf("deregister callback failure: no registration occur")
}
if err := c.connection.DomainEventDeregister(c.registrationID); err != nil {
return fmt.Errorf("deregister callback failure: %v", err)
}
return nil
}
func (c *DomainEventDeviceRemoved) EventChannel() <-chan interface{} {
return c.eventChan
}