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package generate
import (
"context"
"os"
"github.com/containers/common/pkg/config"
"github.com/containers/libpod/libpod"
"github.com/containers/libpod/libpod/define"
"github.com/containers/libpod/libpod/image"
"github.com/containers/libpod/pkg/specgen"
"github.com/containers/storage"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
)
// MakeContainer creates a container based on the SpecGenerator
func MakeContainer(ctx context.Context, rt *libpod.Runtime, s *specgen.SpecGenerator) (*libpod.Container, error) {
rtc, err := rt.GetConfig()
if err != nil {
return nil, err
}
// If joining a pod, retrieve the pod for use.
var pod *libpod.Pod
if s.Pod != "" {
pod, err = rt.LookupPod(s.Pod)
if err != nil {
return nil, errors.Wrapf(err, "error retrieving pod %s", s.Pod)
}
}
// Set defaults for unset namespaces
if s.PidNS.IsDefault() {
defaultNS, err := GetDefaultNamespaceMode("pid", rtc, pod)
if err != nil {
return nil, err
}
s.PidNS = defaultNS
}
if s.IpcNS.IsDefault() {
defaultNS, err := GetDefaultNamespaceMode("ipc", rtc, pod)
if err != nil {
return nil, err
}
s.IpcNS = defaultNS
}
if s.UtsNS.IsDefault() {
defaultNS, err := GetDefaultNamespaceMode("uts", rtc, pod)
if err != nil {
return nil, err
}
s.UtsNS = defaultNS
}
if s.UserNS.IsDefault() {
defaultNS, err := GetDefaultNamespaceMode("user", rtc, pod)
if err != nil {
return nil, err
}
s.UserNS = defaultNS
}
if s.NetNS.IsDefault() {
defaultNS, err := GetDefaultNamespaceMode("net", rtc, pod)
if err != nil {
return nil, err
}
s.NetNS = defaultNS
}
if s.CgroupNS.IsDefault() {
defaultNS, err := GetDefaultNamespaceMode("cgroup", rtc, pod)
if err != nil {
return nil, err
}
s.CgroupNS = defaultNS
}
options := []libpod.CtrCreateOption{}
options = append(options, libpod.WithCreateCommand())
var newImage *image.Image
if s.Rootfs != "" {
options = append(options, libpod.WithRootFS(s.Rootfs))
} else {
newImage, err = rt.ImageRuntime().NewFromLocal(s.Image)
if err != nil {
return nil, err
}
imgName := s.Image
names := newImage.Names()
if len(names) > 0 {
imgName = names[0]
}
options = append(options, libpod.WithRootFSFromImage(newImage.ID(), imgName, s.Image))
}
if err := s.Validate(); err != nil {
return nil, errors.Wrap(err, "invalid config provided")
}
finalMounts, finalVolumes, err := finalizeMounts(ctx, s, rt, rtc, newImage)
if err != nil {
return nil, err
}
opts, err := createContainerOptions(ctx, rt, s, pod, finalVolumes, newImage)
if err != nil {
return nil, err
}
options = append(options, opts...)
podmanPath, err := os.Executable()
if err != nil {
return nil, err
}
options = append(options, createExitCommandOption(s, rt.StorageConfig(), rtc, podmanPath))
runtimeSpec, err := SpecGenToOCI(ctx, s, rt, rtc, newImage, finalMounts)
if err != nil {
return nil, err
}
return rt.NewContainer(ctx, runtimeSpec, options...)
}
func createContainerOptions(ctx context.Context, rt *libpod.Runtime, s *specgen.SpecGenerator, pod *libpod.Pod, volumes []*specgen.NamedVolume, img *image.Image) ([]libpod.CtrCreateOption, error) {
var options []libpod.CtrCreateOption
var err error
if s.Stdin {
options = append(options, libpod.WithStdin())
}
if len(s.Systemd) > 0 {
options = append(options, libpod.WithSystemd())
}
if len(s.Name) > 0 {
logrus.Debugf("setting container name %s", s.Name)
options = append(options, libpod.WithName(s.Name))
}
if pod != nil {
logrus.Debugf("adding container to pod %s", pod.Name())
options = append(options, rt.WithPod(pod))
}
destinations := []string{}
// Take all mount and named volume destinations.
for _, mount := range s.Mounts {
destinations = append(destinations, mount.Destination)
}
for _, volume := range volumes {
destinations = append(destinations, volume.Dest)
}
options = append(options, libpod.WithUserVolumes(destinations))
if len(volumes) != 0 {
var vols []*libpod.ContainerNamedVolume
for _, v := range volumes {
vols = append(vols, &libpod.ContainerNamedVolume{
Name: v.Name,
Dest: v.Dest,
Options: v.Options,
})
}
options = append(options, libpod.WithNamedVolumes(vols))
}
if s.Command != nil {
options = append(options, libpod.WithCommand(s.Command))
}
if s.Entrypoint != nil {
options = append(options, libpod.WithEntrypoint(s.Entrypoint))
}
if s.StopSignal != nil {
options = append(options, libpod.WithStopSignal(*s.StopSignal))
}
if s.StopTimeout != nil {
options = append(options, libpod.WithStopTimeout(*s.StopTimeout))
}
if s.LogConfiguration != nil {
if len(s.LogConfiguration.Path) > 0 {
options = append(options, libpod.WithLogPath(s.LogConfiguration.Path))
}
if len(s.LogConfiguration.Options) > 0 && s.LogConfiguration.Options["tag"] != "" {
// Note: I'm really guessing here.
options = append(options, libpod.WithLogTag(s.LogConfiguration.Options["tag"]))
}
if len(s.LogConfiguration.Driver) > 0 {
options = append(options, libpod.WithLogDriver(s.LogConfiguration.Driver))
}
}
// Security options
if len(s.SelinuxOpts) > 0 {
options = append(options, libpod.WithSecLabels(s.SelinuxOpts))
}
options = append(options, libpod.WithPrivileged(s.Privileged))
// Get namespace related options
namespaceOptions, err := GenerateNamespaceOptions(ctx, s, rt, pod, img)
if err != nil {
return nil, err
}
options = append(options, namespaceOptions...)
if len(s.ConmonPidFile) > 0 {
options = append(options, libpod.WithConmonPidFile(s.ConmonPidFile))
}
options = append(options, libpod.WithLabels(s.Labels))
if s.ShmSize != nil {
options = append(options, libpod.WithShmSize(*s.ShmSize))
}
if s.Rootfs != "" {
options = append(options, libpod.WithRootFS(s.Rootfs))
}
// Default used if not overridden on command line
if s.RestartPolicy != "" {
if s.RestartPolicy == "unless-stopped" {
return nil, errors.Wrapf(define.ErrInvalidArg, "the unless-stopped restart policy is not supported")
}
if s.RestartRetries != nil {
options = append(options, libpod.WithRestartRetries(*s.RestartRetries))
}
options = append(options, libpod.WithRestartPolicy(s.RestartPolicy))
}
if s.ContainerHealthCheckConfig.HealthConfig != nil {
options = append(options, libpod.WithHealthCheck(s.ContainerHealthCheckConfig.HealthConfig))
logrus.Debugf("New container has a health check")
}
return options, nil
}
func createExitCommandOption(s *specgen.SpecGenerator, storageConfig storage.StoreOptions, config *config.Config, podmanPath string) libpod.CtrCreateOption {
// We need a cleanup process for containers in the current model.
// But we can't assume that the caller is Podman - it could be another
// user of the API.
// As such, provide a way to specify a path to Podman, so we can
// still invoke a cleanup process.
command := []string{podmanPath,
"--root", storageConfig.GraphRoot,
"--runroot", storageConfig.RunRoot,
"--log-level", logrus.GetLevel().String(),
"--cgroup-manager", config.Engine.CgroupManager,
"--tmpdir", config.Engine.TmpDir,
}
if config.Engine.OCIRuntime != "" {
command = append(command, []string{"--runtime", config.Engine.OCIRuntime}...)
}
if storageConfig.GraphDriverName != "" {
command = append(command, []string{"--storage-driver", storageConfig.GraphDriverName}...)
}
for _, opt := range storageConfig.GraphDriverOptions {
command = append(command, []string{"--storage-opt", opt}...)
}
if config.Engine.EventsLogger != "" {
command = append(command, []string{"--events-backend", config.Engine.EventsLogger}...)
}
// TODO Mheon wants to leave this for now
//if s.sys {
// command = append(command, "--syslog", "true")
//}
command = append(command, []string{"container", "cleanup"}...)
if s.Remove {
command = append(command, "--rm")
}
return libpod.WithExitCommand(command)
}
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