Files
podman/libpod/pod_internal.go
cdoern d28e85741f InfraContainer Rework
InfraContainer should go through the same creation process as regular containers. This change was from the cmd level
down, involving new container CLI opts and specgen creating functions. What now happens is that both container and pod
cli options are populated in cmd and used to create a podSpecgen and a containerSpecgen. The process then goes as follows

FillOutSpecGen (infra) -> MapSpec (podOpts -> infraOpts) -> PodCreate -> MakePod -> createPodOptions -> NewPod -> CompleteSpec (infra) -> MakeContainer -> NewContainer -> newContainer -> AddInfra (to pod state)

Signed-off-by: cdoern <cdoern@redhat.com>
2021-08-26 16:05:16 -04:00

91 lines
2.4 KiB
Go

package libpod
import (
"fmt"
"path/filepath"
"time"
"github.com/containers/common/pkg/config"
"github.com/containers/podman/v3/libpod/define"
"github.com/containers/podman/v3/pkg/rootless"
"github.com/containers/storage/pkg/stringid"
"github.com/pkg/errors"
"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.GenerateNonCryptoID()
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 errors.Wrapf(err, "error saving pod %s state", p.ID())
}
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 errors.Wrapf(err, "error retrieving lock %d for pod %s", p.config.LockID, p.ID())
}
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()))
if err != nil {
logrus.Errorf("Error 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 errors.Wrapf(define.ErrInvalidArg, "unknown cgroups manager %s specified", p.runtime.config.Engine.CgroupManager)
}
}
// Save changes
return p.save()
}