1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
|
package libpod
import (
"fmt"
"path/filepath"
"time"
"github.com/containers/common/pkg/config"
"github.com/containers/podman/v4/libpod/define"
"github.com/containers/podman/v4/pkg/rootless"
"github.com/containers/storage/pkg/stringid"
"github.com/sirupsen/logrus"
)
// Creates a new, empty pod
func newPod(runtime *Runtime) *Pod {
pod := new(Pod)
pod.config = new(PodConfig)
pod.config.ID = stringid.GenerateRandomID()
pod.config.Labels = make(map[string]string)
pod.config.CreatedTime = time.Now()
// pod.config.InfraContainer = new(ContainerConfig)
pod.state = new(podState)
pod.runtime = runtime
return pod
}
// Update pod state from database
func (p *Pod) updatePod() error {
if err := p.runtime.state.UpdatePod(p); err != nil {
return err
}
return nil
}
// Save pod state to database
func (p *Pod) save() error {
if err := p.runtime.state.SavePod(p); err != nil {
return fmt.Errorf("saving pod %s state: %w", p.ID(), err)
}
return nil
}
// Refresh a pod's state after restart
// This cannot lock any other pod, but may lock individual containers, as those
// will have refreshed by the time pod refresh runs.
func (p *Pod) refresh() error {
// Need to to an update from the DB to pull potentially-missing state
if err := p.runtime.state.UpdatePod(p); err != nil {
return err
}
if !p.valid {
return define.ErrPodRemoved
}
// Retrieve the pod's lock
lock, err := p.runtime.lockManager.AllocateAndRetrieveLock(p.config.LockID)
if err != nil {
return fmt.Errorf("retrieving lock %d for pod %s: %w", p.config.LockID, p.ID(), err)
}
p.lock = lock
// We need to recreate the pod's cgroup
if p.config.UsePodCgroup {
switch p.runtime.config.Engine.CgroupManager {
case config.SystemdCgroupsManager:
cgroupPath, err := systemdSliceFromPath(p.config.CgroupParent, fmt.Sprintf("libpod_pod_%s", p.ID()), p.ResourceLim())
if err != nil {
logrus.Errorf("Creating Cgroup for pod %s: %v", p.ID(), err)
}
p.state.CgroupPath = cgroupPath
case config.CgroupfsCgroupsManager:
if rootless.IsRootless() && isRootlessCgroupSet(p.config.CgroupParent) {
p.state.CgroupPath = filepath.Join(p.config.CgroupParent, p.ID())
logrus.Debugf("setting pod cgroup to %s", p.state.CgroupPath)
}
default:
return fmt.Errorf("unknown cgroups manager %s specified: %w", p.runtime.config.Engine.CgroupManager, define.ErrInvalidArg)
}
}
// Save changes
return p.save()
}
|
