forked from kubewharf/katalyst-core
66 lines
2.0 KiB
Go
66 lines
2.0 KiB
Go
/*
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Copyright 2022 The Katalyst 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 metacache
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import (
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"encoding/json"
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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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"github.com/kubewharf/katalyst-core/pkg/agent/sysadvisor/types"
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)
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var _ checkpointmanager.Checkpoint = &MetaCacheCheckpoint{}
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type MetaCacheCheckpoint struct {
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PodEntries types.PodEntries `json:"pod_entries"`
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PoolEntries types.PoolEntries `json:"pool_entries"`
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RegionEntries types.RegionEntries `json:"region_entries"`
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Checksum checksum.Checksum `json:"checksum"`
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}
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func NewMetaCacheCheckpoint() *MetaCacheCheckpoint {
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return &MetaCacheCheckpoint{
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PodEntries: make(types.PodEntries),
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PoolEntries: make(types.PoolEntries),
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RegionEntries: make(types.RegionEntries),
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}
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}
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// MarshalCheckpoint returns marshaled checkpoint
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func (cp *MetaCacheCheckpoint) MarshalCheckpoint() ([]byte, error) {
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// make sure checksum wasn't set before so it doesn't affect output checksum
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cp.Checksum = 0
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cp.Checksum = checksum.New(cp)
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return json.Marshal(*cp)
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}
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// UnmarshalCheckpoint tries to unmarshal passed bytes to checkpoint
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func (cp *MetaCacheCheckpoint) UnmarshalCheckpoint(blob []byte) error {
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return json.Unmarshal(blob, cp)
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}
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// VerifyChecksum verifies that current checksum of checkpoint is valid
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func (cp *MetaCacheCheckpoint) VerifyChecksum() error {
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ck := cp.Checksum
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cp.Checksum = 0
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err := ck.Verify(cp)
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cp.Checksum = ck
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return err
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}
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