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package libkpod
import (
"encoding/json"
"os"
"time"
"k8s.io/apimachinery/pkg/fields"
pb "k8s.io/kubernetes/pkg/kubelet/apis/cri/v1alpha1/runtime"
"github.com/opencontainers/image-spec/specs-go/v1"
specs "github.com/opencontainers/runtime-spec/specs-go"
"github.com/pkg/errors"
"github.com/projectatomic/libpod/libpod/driver"
"github.com/projectatomic/libpod/libpod/images"
"github.com/projectatomic/libpod/oci"
)
// ContainerData handles the data used when inspecting a container
type ContainerData struct {
ID string
Name string
LogPath string
Labels fields.Set
Annotations fields.Set
State *ContainerState
Metadata *pb.ContainerMetadata
BundlePath string
StopSignal string
FromImage string `json:"Image,omitempty"`
FromImageID string `json:"ImageID"`
MountPoint string `json:"Mountpoint,omitempty"`
MountLabel string
Mounts []specs.Mount
AppArmorProfile string
ImageAnnotations map[string]string `json:"Annotations,omitempty"`
ImageCreatedBy string `json:"CreatedBy,omitempty"`
Config v1.ImageConfig `json:"Config,omitempty"`
SizeRw uint `json:"SizeRw,omitempty"`
SizeRootFs uint `json:"SizeRootFs,omitempty"`
Args []string
ResolvConfPath string
HostnamePath string
HostsPath string
GraphDriver driverData
}
type driverData struct {
Name string
Data map[string]string
}
// ContainerState represents the status of a container.
type ContainerState struct {
specs.State
Created time.Time `json:"created"`
Started time.Time `json:"started,omitempty"`
Finished time.Time `json:"finished,omitempty"`
ExitCode int32 `json:"exitCode"`
OOMKilled bool `json:"oomKilled,omitempty"`
Error string `json:"error,omitempty"`
}
// GetContainerData gets the ContainerData for a container with the given name in the given store.
// If size is set to true, it will also determine the size of the container
func (c *ContainerServer) GetContainerData(name string, size bool) (*ContainerData, error) {
ctr, err := c.inspectContainer(name)
if err != nil {
return nil, errors.Wrapf(err, "error reading build container %q", name)
}
container, err := c.store.Container(name)
if err != nil {
return nil, errors.Wrapf(err, "error reading container data")
}
// The runtime configuration won't exist if the container has never been started by cri-o or kpod,
// so treat a not-exist error as non-fatal.
m := getBlankSpec()
config, err := c.store.FromContainerDirectory(ctr.ID(), "config.json")
if err != nil && !os.IsNotExist(errors.Cause(err)) {
return nil, err
}
if len(config) > 0 {
if err = json.Unmarshal(config, &m); err != nil {
return nil, err
}
}
if container.ImageID == "" {
return nil, errors.Errorf("error reading container image data: container is not based on an image")
}
imageData, err := images.GetData(c.store, container.ImageID)
if err != nil {
return nil, errors.Wrapf(err, "error reading container image data")
}
driverName, err := driver.GetDriverName(c.store)
if err != nil {
return nil, err
}
topLayer, err := c.GetContainerTopLayerID(ctr.ID())
if err != nil {
return nil, err
}
layer, err := c.store.Layer(topLayer)
if err != nil {
return nil, err
}
driverMetadata, err := driver.GetDriverMetadata(c.store, topLayer)
if err != nil {
return nil, err
}
imageName := ""
if len(imageData.Tags) > 0 {
imageName = imageData.Tags[0]
} else if len(imageData.Digests) > 0 {
imageName = imageData.Digests[0]
}
data := &ContainerData{
ID: ctr.ID(),
Name: ctr.Name(),
LogPath: ctr.LogPath(),
Labels: ctr.Labels(),
Annotations: ctr.Annotations(),
State: c.State(ctr),
Metadata: ctr.Metadata(),
BundlePath: ctr.BundlePath(),
StopSignal: ctr.GetStopSignal(),
Args: m.Process.Args,
FromImage: imageName,
FromImageID: container.ImageID,
MountPoint: layer.MountPoint,
ImageAnnotations: imageData.Annotations,
ImageCreatedBy: imageData.CreatedBy,
Config: imageData.Config,
GraphDriver: driverData{
Name: driverName,
Data: driverMetadata,
},
MountLabel: m.Linux.MountLabel,
Mounts: m.Mounts,
AppArmorProfile: m.Process.ApparmorProfile,
ResolvConfPath: "",
HostnamePath: "",
HostsPath: "",
}
if size {
sizeRootFs, err := c.GetContainerRootFsSize(data.ID)
if err != nil {
return nil, errors.Wrapf(err, "error reading size for container %q", name)
}
data.SizeRootFs = uint(sizeRootFs)
sizeRw, err := c.GetContainerRwSize(data.ID)
if err != nil {
return nil, errors.Wrapf(err, "error reading RWSize for container %q", name)
}
data.SizeRw = uint(sizeRw)
}
return data, nil
}
// Get an oci.Container and update its status
func (c *ContainerServer) inspectContainer(container string) (*oci.Container, error) {
ociCtr, err := c.LookupContainer(container)
if err != nil {
return nil, err
}
// call runtime.UpdateStatus()
err = c.Runtime().UpdateStatus(ociCtr)
if err != nil {
return nil, err
}
return ociCtr, nil
}
func getBlankSpec() specs.Spec {
return specs.Spec{
Process: &specs.Process{},
Root: &specs.Root{},
Mounts: []specs.Mount{},
Hooks: &specs.Hooks{},
Annotations: make(map[string]string),
Linux: &specs.Linux{},
Solaris: &specs.Solaris{},
Windows: &specs.Windows{},
}
}
// State copies the crio container state to ContainerState type for kpod
func (c *ContainerServer) State(ctr *oci.Container) *ContainerState {
crioState := ctr.State()
specState := specs.State{
Version: crioState.Version,
ID: crioState.ID,
Status: crioState.Status,
Pid: crioState.Pid,
Bundle: crioState.Bundle,
Annotations: crioState.Annotations,
}
cState := &ContainerState{
Started: crioState.Started,
Created: crioState.Created,
Finished: crioState.Finished,
}
cState.State = specState
return cState
}
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