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|
package compat
import (
"context"
"encoding/json"
"fmt"
"net/http"
"strings"
"github.com/containers/common/pkg/config"
"github.com/containers/podman/v2/libpod"
"github.com/containers/podman/v2/libpod/define"
image2 "github.com/containers/podman/v2/libpod/image"
"github.com/containers/podman/v2/pkg/api/handlers"
"github.com/containers/podman/v2/pkg/api/handlers/utils"
"github.com/containers/podman/v2/pkg/namespaces"
"github.com/containers/podman/v2/pkg/rootless"
"github.com/containers/podman/v2/pkg/signal"
createconfig "github.com/containers/podman/v2/pkg/spec"
"github.com/containers/podman/v2/pkg/specgen"
"github.com/containers/storage"
"github.com/gorilla/schema"
"github.com/pkg/errors"
"golang.org/x/sys/unix"
)
func CreateContainer(w http.ResponseWriter, r *http.Request) {
runtime := r.Context().Value("runtime").(*libpod.Runtime)
decoder := r.Context().Value("decoder").(*schema.Decoder)
input := handlers.CreateContainerConfig{}
query := struct {
Name string `schema:"name"`
}{
// override any golang type defaults
}
if err := decoder.Decode(&query, r.URL.Query()); err != nil {
utils.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest,
errors.Wrapf(err, "failed to parse parameters for %s", r.URL.String()))
return
}
if err := json.NewDecoder(r.Body).Decode(&input); err != nil {
utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "Decode()"))
return
}
if len(input.HostConfig.Links) > 0 {
utils.Error(w, utils.ErrLinkNotSupport.Error(), http.StatusBadRequest, errors.Wrapf(utils.ErrLinkNotSupport, "bad parameter"))
return
}
newImage, err := runtime.ImageRuntime().NewFromLocal(input.Image)
if err != nil {
if errors.Cause(err) == define.ErrNoSuchImage {
utils.Error(w, "No such image", http.StatusNotFound, err)
return
}
utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "NewFromLocal()"))
return
}
containerConfig, err := runtime.GetConfig()
if err != nil {
utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "GetConfig()"))
return
}
cc, err := makeCreateConfig(r.Context(), containerConfig, input, newImage)
if err != nil {
utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "makeCreatConfig()"))
return
}
cc.Name = query.Name
utils.CreateContainer(r.Context(), w, runtime, &cc)
}
func makeCreateConfig(ctx context.Context, containerConfig *config.Config, input handlers.CreateContainerConfig, newImage *image2.Image) (createconfig.CreateConfig, error) {
var (
err error
init bool
)
env := make(map[string]string)
stopSignal := unix.SIGTERM
if len(input.StopSignal) > 0 {
stopSignal, err = signal.ParseSignal(input.StopSignal)
if err != nil {
return createconfig.CreateConfig{}, err
}
}
workDir, err := newImage.WorkingDir(ctx)
if err != nil {
return createconfig.CreateConfig{}, err
}
if workDir == "" {
workDir = "/"
}
if len(input.WorkingDir) > 0 {
workDir = input.WorkingDir
}
// Only use image's Cmd when the user does not set the entrypoint
if input.Entrypoint == nil && len(input.Cmd) == 0 {
cmdSlice, err := newImage.Cmd(ctx)
if err != nil {
return createconfig.CreateConfig{}, err
}
input.Cmd = cmdSlice
}
if input.Entrypoint == nil {
entrypointSlice, err := newImage.Entrypoint(ctx)
if err != nil {
return createconfig.CreateConfig{}, err
}
input.Entrypoint = entrypointSlice
}
stopTimeout := containerConfig.Engine.StopTimeout
if input.StopTimeout != nil {
stopTimeout = uint(*input.StopTimeout)
}
c := createconfig.CgroupConfig{
Cgroups: "", // podman
Cgroupns: "", // podman
CgroupParent: "", // podman
CgroupMode: "", // podman
}
security := createconfig.SecurityConfig{
CapAdd: input.HostConfig.CapAdd,
CapDrop: input.HostConfig.CapDrop,
LabelOpts: nil, // podman
NoNewPrivs: false, // podman
ApparmorProfile: "", // podman
SeccompProfilePath: "",
SecurityOpts: input.HostConfig.SecurityOpt,
Privileged: input.HostConfig.Privileged,
ReadOnlyRootfs: input.HostConfig.ReadonlyRootfs,
ReadOnlyTmpfs: false, // podman-only
Sysctl: input.HostConfig.Sysctls,
}
var netmode namespaces.NetworkMode
if rootless.IsRootless() {
netmode = namespaces.NetworkMode(specgen.Slirp)
}
network := createconfig.NetworkConfig{
DNSOpt: input.HostConfig.DNSOptions,
DNSSearch: input.HostConfig.DNSSearch,
DNSServers: input.HostConfig.DNS,
ExposedPorts: input.ExposedPorts,
HTTPProxy: false, // podman
IP6Address: "",
IPAddress: "",
LinkLocalIP: nil, // docker-only
MacAddress: input.MacAddress,
NetMode: netmode,
Network: input.HostConfig.NetworkMode.NetworkName(),
NetworkAlias: nil, // docker-only now
PortBindings: input.HostConfig.PortBindings,
Publish: nil, // podmanseccompPath
PublishAll: input.HostConfig.PublishAllPorts,
}
uts := createconfig.UtsConfig{
UtsMode: namespaces.UTSMode(input.HostConfig.UTSMode),
NoHosts: false, //podman
HostAdd: input.HostConfig.ExtraHosts,
Hostname: input.Hostname,
}
z := createconfig.UserConfig{
GroupAdd: input.HostConfig.GroupAdd,
IDMappings: &storage.IDMappingOptions{}, // podman //TODO <--- fix this,
UsernsMode: namespaces.UsernsMode(input.HostConfig.UsernsMode),
User: input.User,
}
pidConfig := createconfig.PidConfig{PidMode: namespaces.PidMode(input.HostConfig.PidMode)}
// TODO: We should check that these binds are all listed in the `Volumes`
// key since it doesn't make sense to define a `Binds` element for a
// container path which isn't defined as a volume
volumes := input.HostConfig.Binds
// Docker is more flexible about its input where podman throws
// away incorrectly formatted variables so we cannot reuse the
// parsing of the env input
// [Foo Other=one Blank=]
imgEnv, err := newImage.Env(ctx)
if err != nil {
return createconfig.CreateConfig{}, err
}
input.Env = append(imgEnv, input.Env...)
for _, e := range input.Env {
splitEnv := strings.Split(e, "=")
switch len(splitEnv) {
case 0:
continue
case 1:
env[splitEnv[0]] = ""
default:
env[splitEnv[0]] = strings.Join(splitEnv[1:], "=")
}
}
// format the tmpfs mounts into a []string from map
tmpfs := make([]string, 0, len(input.HostConfig.Tmpfs))
for k, v := range input.HostConfig.Tmpfs {
tmpfs = append(tmpfs, fmt.Sprintf("%s:%s", k, v))
}
if input.HostConfig.Init != nil && *input.HostConfig.Init {
init = true
}
m := createconfig.CreateConfig{
Annotations: nil, // podman
Args: nil,
Cgroup: c,
CidFile: "",
ConmonPidFile: "", // podman
Command: input.Cmd,
UserCommand: input.Cmd, // podman
Detach: false, //
// Devices: input.HostConfig.Devices,
Entrypoint: input.Entrypoint,
Env: env,
HealthCheck: nil, //
Init: init,
InitPath: "", // tbd
Image: input.Image,
ImageID: newImage.ID(),
BuiltinImgVolumes: nil, // podman
ImageVolumeType: "", // podman
Interactive: input.OpenStdin,
// IpcMode: input.HostConfig.IpcMode,
Labels: input.Labels,
LogDriver: input.HostConfig.LogConfig.Type, // is this correct
// LogDriverOpt: input.HostConfig.LogConfig.Config,
Name: input.Name,
Network: network,
Pod: "", // podman
PodmanPath: "", // podman
Quiet: false, // front-end only
Resources: createconfig.CreateResourceConfig{MemorySwappiness: -1},
RestartPolicy: input.HostConfig.RestartPolicy.Name,
Rm: input.HostConfig.AutoRemove,
StopSignal: stopSignal,
StopTimeout: stopTimeout,
Systemd: false, // podman
Tmpfs: tmpfs,
User: z,
Uts: uts,
Tty: input.Tty,
Mounts: nil, // we populate
// MountsFlag: input.HostConfig.Mounts,
NamedVolumes: nil, // we populate
Volumes: volumes,
VolumesFrom: input.HostConfig.VolumesFrom,
WorkDir: workDir,
Rootfs: "", // podman
Security: security,
Syslog: false, // podman
Pid: pidConfig,
}
fullCmd := append(input.Entrypoint, input.Cmd...)
if len(fullCmd) > 0 {
m.PodmanPath = fullCmd[0]
if len(fullCmd) == 1 {
m.Args = fullCmd
} else {
m.Args = fullCmd[1:]
}
}
return m, nil
}
|
