mirror of
https://github.com/k3s-io/kubernetes.git
synced 2025-11-03 23:40:03 +00:00
86 lines
2.4 KiB
Go
86 lines
2.4 KiB
Go
/*
|
|
Copyright 2017 The Kubernetes Authors.
|
|
|
|
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.
|
|
*/
|
|
|
|
package checkpoint
|
|
|
|
import (
|
|
"encoding/json"
|
|
|
|
"k8s.io/kubernetes/pkg/kubelet/checkpointmanager"
|
|
"k8s.io/kubernetes/pkg/kubelet/checkpointmanager/checksum"
|
|
)
|
|
|
|
// DeviceManagerCheckpoint defines the operations to retrieve pod devices
|
|
type DeviceManagerCheckpoint interface {
|
|
checkpointmanager.Checkpoint
|
|
GetData() ([]PodDevicesEntry, map[string][]string)
|
|
}
|
|
|
|
// PodDevicesEntry connects pod information to devices
|
|
type PodDevicesEntry struct {
|
|
PodUID string
|
|
ContainerName string
|
|
ResourceName string
|
|
DeviceIDs []string
|
|
AllocResp []byte
|
|
}
|
|
|
|
// checkpointData struct is used to store pod to device allocation information
|
|
// in a checkpoint file.
|
|
// TODO: add version control when we need to change checkpoint format.
|
|
type checkpointData struct {
|
|
PodDeviceEntries []PodDevicesEntry
|
|
RegisteredDevices map[string][]string
|
|
}
|
|
|
|
// Data holds checkpoint data and its checksum
|
|
type Data struct {
|
|
Data checkpointData
|
|
Checksum checksum.Checksum
|
|
}
|
|
|
|
// New returns an instance of Checkpoint
|
|
func New(devEntries []PodDevicesEntry,
|
|
devices map[string][]string) DeviceManagerCheckpoint {
|
|
return &Data{
|
|
Data: checkpointData{
|
|
PodDeviceEntries: devEntries,
|
|
RegisteredDevices: devices,
|
|
},
|
|
}
|
|
}
|
|
|
|
// MarshalCheckpoint returns marshalled data
|
|
func (cp *Data) MarshalCheckpoint() ([]byte, error) {
|
|
cp.Checksum = checksum.New(cp.Data)
|
|
return json.Marshal(*cp)
|
|
}
|
|
|
|
// UnmarshalCheckpoint returns unmarshalled data
|
|
func (cp *Data) UnmarshalCheckpoint(blob []byte) error {
|
|
return json.Unmarshal(blob, cp)
|
|
}
|
|
|
|
// VerifyChecksum verifies that passed checksum is same as calculated checksum
|
|
func (cp *Data) VerifyChecksum() error {
|
|
return cp.Checksum.Verify(cp.Data)
|
|
}
|
|
|
|
// GetData returns device entries and registered devices
|
|
func (cp *Data) GetData() ([]PodDevicesEntry, map[string][]string) {
|
|
return cp.Data.PodDeviceEntries, cp.Data.RegisteredDevices
|
|
}
|