mirror of
https://github.com/optim-enterprises-bv/kubernetes.git
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81 lines
2.3 KiB
Go
81 lines
2.3 KiB
Go
/*
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Copyright 2021 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 state
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import (
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"encoding/json"
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"fmt"
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v1 "k8s.io/api/core/v1"
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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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var _ checkpointmanager.Checkpoint = &Checkpoint{}
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type PodResourceAllocationInfo struct {
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AllocationEntries map[string]map[string]v1.ResourceRequirements `json:"allocationEntries,omitempty"`
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}
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// Checkpoint represents a structure to store pod resource allocation checkpoint data
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type Checkpoint struct {
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// Data is a serialized PodResourceAllocationInfo
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Data string `json:"data"`
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// Checksum is a checksum of Data
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Checksum checksum.Checksum `json:"checksum"`
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}
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// NewCheckpoint creates a new checkpoint from a list of claim info states
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func NewCheckpoint(allocations *PodResourceAllocationInfo) (*Checkpoint, error) {
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serializedAllocations, err := json.Marshal(allocations)
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if err != nil {
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return nil, fmt.Errorf("failed to serialize allocations for checkpointing: %w", err)
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}
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cp := &Checkpoint{
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Data: string(serializedAllocations),
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}
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cp.Checksum = checksum.New(cp.Data)
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return cp, nil
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}
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func (cp *Checkpoint) MarshalCheckpoint() ([]byte, error) {
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return json.Marshal(cp)
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}
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// UnmarshalCheckpoint unmarshals checkpoint from JSON
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func (cp *Checkpoint) 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
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// of checkpointed Data is valid
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func (cp *Checkpoint) VerifyChecksum() error {
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return cp.Checksum.Verify(cp.Data)
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}
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// GetPodResourceAllocationInfo returns Pod Resource Allocation info states from checkpoint
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func (cp *Checkpoint) GetPodResourceAllocationInfo() (*PodResourceAllocationInfo, error) {
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var data PodResourceAllocationInfo
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if err := json.Unmarshal([]byte(cp.Data), &data); err != nil {
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return nil, err
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}
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return &data, nil
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}
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