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package libpod
import (
"io/ioutil"
"net/http"
"os"
"strconv"
"github.com/containers/podman/v2/libpod"
"github.com/containers/podman/v2/libpod/define"
"github.com/containers/podman/v2/pkg/api/handlers/compat"
"github.com/containers/podman/v2/pkg/api/handlers/utils"
"github.com/containers/podman/v2/pkg/domain/entities"
"github.com/containers/podman/v2/pkg/ps"
"github.com/gorilla/schema"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
)
func ContainerExists(w http.ResponseWriter, r *http.Request) {
runtime := r.Context().Value("runtime").(*libpod.Runtime)
name := utils.GetName(r)
_, err := runtime.LookupContainer(name)
if err != nil {
if errors.Cause(err) == define.ErrNoSuchCtr {
utils.ContainerNotFound(w, name, err)
}
utils.InternalServerError(w, err)
return
}
utils.WriteResponse(w, http.StatusNoContent, "")
}
func ListContainers(w http.ResponseWriter, r *http.Request) {
decoder := r.Context().Value("decoder").(*schema.Decoder)
query := struct {
All bool `schema:"all"`
Filters map[string][]string `schema:"filters"`
Last int `schema:"last"` // alias for limit
Limit int `schema:"limit"`
Namespace bool `schema:"namespace"`
Pod bool `schema:"pod"`
Size bool `schema:"size"`
Sync bool `schema:"sync"`
}{
// 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
}
limit := query.Limit
// Support `last` as an alias for `limit`. While Podman uses --last in
// the CLI, the API is using `limit`. As we first used `last` in the
// API as well, we decided to go with aliasing to prevent any
// regression. See github.com/containers/podman/issues/6413.
if _, found := r.URL.Query()["last"]; found {
logrus.Info("List containers: received `last` parameter - overwriting `limit`")
limit = query.Last
}
runtime := r.Context().Value("runtime").(*libpod.Runtime)
opts := entities.ContainerListOptions{
All: query.All,
Filters: query.Filters,
Last: limit,
Size: query.Size,
Sort: "",
Namespace: query.Namespace,
Pod: query.Pod,
Sync: query.Sync,
}
pss, err := ps.GetContainerLists(runtime, opts)
if err != nil {
utils.InternalServerError(w, err)
return
}
if len(pss) == 0 {
utils.WriteResponse(w, http.StatusOK, "[]")
return
}
utils.WriteResponse(w, http.StatusOK, pss)
}
func GetContainer(w http.ResponseWriter, r *http.Request) {
decoder := r.Context().Value("decoder").(*schema.Decoder)
query := struct {
Size bool `schema:"size"`
}{
// 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
}
runtime := r.Context().Value("runtime").(*libpod.Runtime)
name := utils.GetName(r)
container, err := runtime.LookupContainer(name)
if err != nil {
utils.ContainerNotFound(w, name, err)
return
}
data, err := container.Inspect(query.Size)
if err != nil {
utils.InternalServerError(w, err)
return
}
utils.WriteResponse(w, http.StatusOK, data)
}
func WaitContainer(w http.ResponseWriter, r *http.Request) {
exitCode, err := utils.WaitContainer(w, r)
if err != nil {
return
}
utils.WriteResponse(w, http.StatusOK, strconv.Itoa(int(exitCode)))
}
func UnmountContainer(w http.ResponseWriter, r *http.Request) {
runtime := r.Context().Value("runtime").(*libpod.Runtime)
name := utils.GetName(r)
conn, err := runtime.LookupContainer(name)
if err != nil {
utils.ContainerNotFound(w, name, err)
return
}
// TODO In future it might be an improvement that libpod unmount return a
// "container not mounted" error so we can surface that to the endpoint user
if err := conn.Unmount(false); err != nil {
utils.InternalServerError(w, err)
}
utils.WriteResponse(w, http.StatusNoContent, "")
}
func MountContainer(w http.ResponseWriter, r *http.Request) {
runtime := r.Context().Value("runtime").(*libpod.Runtime)
name := utils.GetName(r)
conn, err := runtime.LookupContainer(name)
if err != nil {
utils.ContainerNotFound(w, name, err)
return
}
m, err := conn.Mount()
if err != nil {
utils.InternalServerError(w, err)
}
utils.WriteResponse(w, http.StatusOK, m)
}
func ShowMountedContainers(w http.ResponseWriter, r *http.Request) {
response := make(map[string]string)
runtime := r.Context().Value("runtime").(*libpod.Runtime)
conns, err := runtime.GetAllContainers()
if err != nil {
utils.InternalServerError(w, err)
}
for _, conn := range conns {
mounted, mountPoint, err := conn.Mounted()
if err != nil {
utils.InternalServerError(w, err)
}
if !mounted {
continue
}
response[conn.ID()] = mountPoint
}
utils.WriteResponse(w, http.StatusOK, response)
}
func Checkpoint(w http.ResponseWriter, r *http.Request) {
var targetFile string
decoder := r.Context().Value("decoder").(*schema.Decoder)
query := struct {
Keep bool `schema:"keep"`
LeaveRunning bool `schema:"leaveRunning"`
TCPEstablished bool `schema:"tcpEstablished"`
Export bool `schema:"export"`
IgnoreRootFS bool `schema:"ignoreRootFS"`
}{
// 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
}
name := utils.GetName(r)
runtime := r.Context().Value("runtime").(*libpod.Runtime)
ctr, err := runtime.LookupContainer(name)
if err != nil {
utils.ContainerNotFound(w, name, err)
return
}
if query.Export {
tmpFile, err := ioutil.TempFile("", "checkpoint")
if err != nil {
utils.InternalServerError(w, err)
return
}
defer os.Remove(tmpFile.Name())
if err := tmpFile.Close(); err != nil {
utils.InternalServerError(w, err)
return
}
targetFile = tmpFile.Name()
}
options := libpod.ContainerCheckpointOptions{
Keep: query.Keep,
KeepRunning: query.LeaveRunning,
TCPEstablished: query.TCPEstablished,
IgnoreRootfs: query.IgnoreRootFS,
}
if query.Export {
options.TargetFile = targetFile
}
err = ctr.Checkpoint(r.Context(), options)
if err != nil {
utils.InternalServerError(w, err)
return
}
if query.Export {
f, err := os.Open(targetFile)
if err != nil {
utils.InternalServerError(w, err)
return
}
defer f.Close()
utils.WriteResponse(w, http.StatusOK, f)
return
}
utils.WriteResponse(w, http.StatusOK, entities.CheckpointReport{Id: ctr.ID()})
}
func Restore(w http.ResponseWriter, r *http.Request) {
var (
targetFile string
)
decoder := r.Context().Value("decoder").(*schema.Decoder)
query := struct {
Keep bool `schema:"keep"`
TCPEstablished bool `schema:"tcpEstablished"`
Import bool `schema:"import"`
Name string `schema:"name"`
IgnoreRootFS bool `schema:"ignoreRootFS"`
IgnoreStaticIP bool `schema:"ignoreStaticIP"`
IgnoreStaticMAC bool `schema:"ignoreStaticMAC"`
}{
// 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
}
name := utils.GetName(r)
runtime := r.Context().Value("runtime").(*libpod.Runtime)
ctr, err := runtime.LookupContainer(name)
if err != nil {
utils.ContainerNotFound(w, name, err)
return
}
if query.Import {
t, err := ioutil.TempFile("", "restore")
if err != nil {
utils.InternalServerError(w, err)
return
}
defer t.Close()
if err := compat.SaveFromBody(t, r); err != nil {
utils.InternalServerError(w, err)
return
}
targetFile = t.Name()
}
options := libpod.ContainerCheckpointOptions{
Keep: query.Keep,
TCPEstablished: query.TCPEstablished,
IgnoreRootfs: query.IgnoreRootFS,
IgnoreStaticIP: query.IgnoreStaticIP,
IgnoreStaticMAC: query.IgnoreStaticMAC,
}
if query.Import {
options.TargetFile = targetFile
options.Name = query.Name
}
err = ctr.Restore(r.Context(), options)
if err != nil {
utils.InternalServerError(w, err)
return
}
utils.WriteResponse(w, http.StatusOK, entities.RestoreReport{Id: ctr.ID()})
}
func InitContainer(w http.ResponseWriter, r *http.Request) {
name := utils.GetName(r)
runtime := r.Context().Value("runtime").(*libpod.Runtime)
ctr, err := runtime.LookupContainer(name)
if err != nil {
utils.ContainerNotFound(w, name, err)
return
}
err = ctr.Init(r.Context(), ctr.PodID() != "")
if errors.Cause(err) == define.ErrCtrStateInvalid {
utils.Error(w, "container already initialized", http.StatusNotModified, err)
return
}
if err != nil {
utils.InternalServerError(w, err)
return
}
utils.WriteResponse(w, http.StatusNoContent, "")
}
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