a8b8995ef2
It covers deviceplugin & cpumanager. It has drawback, since cpuset and all other structs including cadvisor's keep cpu as int, but for protobuf based interface is better to have fixed int. This patch also introduces additional interface CPUsProvider, while DeviceProvider might have been extended too. Checkpoint not covered by unit test. Signed-off-by: Swati Sehgal <swsehgal@redhat.com> Signed-off-by: Alexey Perevalov <alexey.perevalov@huawei.com>
106 lines
2.9 KiB
Go
106 lines
2.9 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.String
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func (dev DevicesPerNUMA) Devices() sets.String {
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result := sets.NewString()
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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
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func New(devEntries []PodDevicesEntry,
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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
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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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