181fb0da51
In commit 2f426fdba6 we added
compatibility (and tests) to deal with pre-1.20 checkpoint files.
We are now well past the end of support for pre-1.20 kubelets,
so we can get rid of this code.
Signed-off-by: Francesco Romani <fromani@redhat.com>
110 lines
3.2 KiB
Go
110 lines
3.2 KiB
Go
/*
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Copyright 2017 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package checkpoint
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import (
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"encoding/json"
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"k8s.io/apimachinery/pkg/util/sets"
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"k8s.io/kubernetes/pkg/kubelet/checkpointmanager"
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"k8s.io/kubernetes/pkg/kubelet/checkpointmanager/checksum"
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)
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// DeviceManagerCheckpoint defines the operations to retrieve pod devices
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type DeviceManagerCheckpoint interface {
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checkpointmanager.Checkpoint
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GetData() ([]PodDevicesEntry, map[string][]string)
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}
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// DevicesPerNUMA represents device ids obtained from device plugin per NUMA node id
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type DevicesPerNUMA map[int64][]string
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// PodDevicesEntry connects pod information to devices
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type PodDevicesEntry struct {
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PodUID string
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ContainerName string
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ResourceName string
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DeviceIDs DevicesPerNUMA
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AllocResp []byte
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}
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// checkpointData struct is used to store pod to device allocation information
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// in a checkpoint file.
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// TODO: add version control when we need to change checkpoint format.
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type checkpointData struct {
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PodDeviceEntries []PodDevicesEntry
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RegisteredDevices map[string][]string
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}
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// Data holds checkpoint data and its checksum
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type Data struct {
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Data checkpointData
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Checksum checksum.Checksum
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}
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// NewDevicesPerNUMA is a function that creates DevicesPerNUMA map
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func NewDevicesPerNUMA() DevicesPerNUMA {
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return make(DevicesPerNUMA)
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}
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// Devices is a function that returns all device ids for all NUMA nodes
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// and represent it as sets.Set[string]
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func (dev DevicesPerNUMA) Devices() sets.Set[string] {
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result := sets.New[string]()
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for _, devs := range dev {
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result.Insert(devs...)
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}
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return result
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}
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// New returns an instance of Checkpoint - must be an alias for the most recent version
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func New(devEntries []PodDevicesEntry, devices map[string][]string) DeviceManagerCheckpoint {
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return newV2(devEntries, devices)
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}
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func newV2(devEntries []PodDevicesEntry, devices map[string][]string) DeviceManagerCheckpoint {
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return &Data{
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Data: checkpointData{
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PodDeviceEntries: devEntries,
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RegisteredDevices: devices,
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},
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}
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}
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// MarshalCheckpoint returns marshalled data
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func (cp *Data) MarshalCheckpoint() ([]byte, error) {
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cp.Checksum = checksum.New(cp.Data)
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return json.Marshal(*cp)
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}
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// UnmarshalCheckpoint returns unmarshalled data
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func (cp *Data) UnmarshalCheckpoint(blob []byte) error {
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return json.Unmarshal(blob, cp)
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}
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// VerifyChecksum verifies that passed checksum is same as calculated checksum
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func (cp *Data) VerifyChecksum() error {
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return cp.Checksum.Verify(cp.Data)
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}
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// GetData returns device entries and registered devices in the *most recent*
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// checkpoint format, *not* in the original format stored on disk.
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func (cp *Data) GetData() ([]PodDevicesEntry, map[string][]string) {
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return cp.Data.PodDeviceEntries, cp.Data.RegisteredDevices
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}
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