mirror of
https://github.com/optim-enterprises-bv/kubernetes.git
synced 2025-11-03 19:58:17 +00:00
109 lines
3.7 KiB
Go
109 lines
3.7 KiB
Go
// +build !dockerless
|
|
|
|
/*
|
|
Copyright 2017 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 dockershim
|
|
|
|
import (
|
|
"encoding/json"
|
|
|
|
"k8s.io/kubernetes/pkg/kubelet/checkpointmanager"
|
|
"k8s.io/kubernetes/pkg/kubelet/checkpointmanager/checksum"
|
|
)
|
|
|
|
const (
|
|
// default directory to store pod sandbox checkpoint files
|
|
sandboxCheckpointDir = "sandbox"
|
|
protocolTCP = Protocol("tcp")
|
|
protocolUDP = Protocol("udp")
|
|
protocolSCTP = Protocol("sctp")
|
|
schemaVersion = "v1"
|
|
)
|
|
|
|
// ContainerCheckpoint provides the interface for process container's checkpoint data
|
|
type ContainerCheckpoint interface {
|
|
checkpointmanager.Checkpoint
|
|
GetData() (string, string, string, []*PortMapping, bool)
|
|
}
|
|
|
|
// Protocol is the type of port mapping protocol
|
|
type Protocol string
|
|
|
|
// PortMapping is the port mapping configurations of a sandbox.
|
|
type PortMapping struct {
|
|
// Protocol of the port mapping.
|
|
Protocol *Protocol `json:"protocol,omitempty"`
|
|
// Port number within the container.
|
|
ContainerPort *int32 `json:"container_port,omitempty"`
|
|
// Port number on the host.
|
|
HostPort *int32 `json:"host_port,omitempty"`
|
|
// Host ip to expose.
|
|
HostIP string `json:"host_ip,omitempty"`
|
|
}
|
|
|
|
// CheckpointData contains all types of data that can be stored in the checkpoint.
|
|
type CheckpointData struct {
|
|
PortMappings []*PortMapping `json:"port_mappings,omitempty"`
|
|
HostNetwork bool `json:"host_network,omitempty"`
|
|
}
|
|
|
|
// PodSandboxCheckpoint is the checkpoint structure for a sandbox
|
|
type PodSandboxCheckpoint struct {
|
|
// Version of the pod sandbox checkpoint schema.
|
|
Version string `json:"version"`
|
|
// Pod name of the sandbox. Same as the pod name in the Pod ObjectMeta.
|
|
Name string `json:"name"`
|
|
// Pod namespace of the sandbox. Same as the pod namespace in the Pod ObjectMeta.
|
|
Namespace string `json:"namespace"`
|
|
// Data to checkpoint for pod sandbox.
|
|
Data *CheckpointData `json:"data,omitempty"`
|
|
// Checksum is calculated with fnv hash of the checkpoint object with checksum field set to be zero
|
|
Checksum checksum.Checksum `json:"checksum"`
|
|
}
|
|
|
|
// NewPodSandboxCheckpoint inits a PodSandboxCheckpoint with the given args
|
|
func NewPodSandboxCheckpoint(namespace, name string, data *CheckpointData) ContainerCheckpoint {
|
|
return &PodSandboxCheckpoint{
|
|
Version: schemaVersion,
|
|
Namespace: namespace,
|
|
Name: name,
|
|
Data: data,
|
|
}
|
|
}
|
|
|
|
// MarshalCheckpoint encodes the PodSandboxCheckpoint instance to a json object
|
|
func (cp *PodSandboxCheckpoint) MarshalCheckpoint() ([]byte, error) {
|
|
cp.Checksum = checksum.New(*cp.Data)
|
|
return json.Marshal(*cp)
|
|
}
|
|
|
|
// UnmarshalCheckpoint decodes the blob data to the PodSandboxCheckpoint instance
|
|
func (cp *PodSandboxCheckpoint) UnmarshalCheckpoint(blob []byte) error {
|
|
return json.Unmarshal(blob, cp)
|
|
}
|
|
|
|
// VerifyChecksum verifies whether the PodSandboxCheckpoint's data checksum is
|
|
// the same as calculated checksum
|
|
func (cp *PodSandboxCheckpoint) VerifyChecksum() error {
|
|
return cp.Checksum.Verify(*cp.Data)
|
|
}
|
|
|
|
// GetData gets the PodSandboxCheckpoint's version and some net information
|
|
func (cp *PodSandboxCheckpoint) GetData() (string, string, string, []*PortMapping, bool) {
|
|
return cp.Version, cp.Name, cp.Namespace, cp.Data.PortMappings, cp.Data.HostNetwork
|
|
}
|