/* Copyright 2020 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 state import ( "encoding/json" "k8s.io/kubernetes/pkg/kubelet/checkpointmanager" "k8s.io/kubernetes/pkg/kubelet/checkpointmanager/checksum" ) var _ checkpointmanager.Checkpoint = &MemoryManagerCheckpoint{} // MemoryManagerCheckpoint struct is used to store memory/pod assignments in a checkpoint type MemoryManagerCheckpoint struct { PolicyName string `json:"policyName"` MachineState NUMANodeMap `json:"machineState"` Entries ContainerMemoryAssignments `json:"entries,omitempty"` Checksum checksum.Checksum `json:"checksum"` } // NewMemoryManagerCheckpoint returns an instance of Checkpoint func NewMemoryManagerCheckpoint() *MemoryManagerCheckpoint { //nolint:staticcheck // unexported-type-in-api user-facing error message return &MemoryManagerCheckpoint{ Entries: ContainerMemoryAssignments{}, MachineState: NUMANodeMap{}, } } // MarshalCheckpoint returns marshalled checkpoint func (mp *MemoryManagerCheckpoint) MarshalCheckpoint() ([]byte, error) { // make sure checksum wasn't set before so it doesn't affect output checksum mp.Checksum = 0 mp.Checksum = checksum.New(mp) return json.Marshal(*mp) } // UnmarshalCheckpoint tries to unmarshal passed bytes to checkpoint func (mp *MemoryManagerCheckpoint) UnmarshalCheckpoint(blob []byte) error { return json.Unmarshal(blob, mp) } // VerifyChecksum verifies that current checksum of checkpoint is valid func (mp *MemoryManagerCheckpoint) VerifyChecksum() error { ck := mp.Checksum mp.Checksum = 0 err := ck.Verify(mp) mp.Checksum = ck return err }