Files
Matthew Heon 36a0ed9702 Rework label parsing
We attempted to share all logic for parsing labels and
environment variables, which on the surface makes lots of sense
(both are formatted key=value so parsing logic should be
identical) but has begun to fall apart now that we have added
additional logic to environment variable handling. Environment
variables that are unset, for example, are looked up against
environment variables set for the process. We don't want this for
labels, so we have to split parsing logic.

Fixes #3854

Signed-off-by: Matthew Heon <matthew.heon@pm.me>
2020-02-14 16:06:20 -05:00

417 lines
12 KiB
Go

package libpod
import (
"encoding/json"
"fmt"
"net/http"
"strings"
"github.com/containers/libpod/cmd/podman/shared"
"github.com/containers/libpod/cmd/podman/shared/parse"
"github.com/containers/libpod/libpod"
"github.com/containers/libpod/libpod/define"
"github.com/containers/libpod/pkg/api/handlers"
"github.com/containers/libpod/pkg/api/handlers/utils"
"github.com/containers/libpod/pkg/util"
"github.com/gorilla/mux"
"github.com/gorilla/schema"
"github.com/pkg/errors"
)
func PodCreate(w http.ResponseWriter, r *http.Request) {
var (
runtime = r.Context().Value("runtime").(*libpod.Runtime)
options []libpod.PodCreateOption
err error
)
labels := make(map[string]string)
input := handlers.PodCreateConfig{}
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.InfraCommand) > 0 || len(input.InfraImage) > 0 {
utils.Error(w, "Something went wrong.", http.StatusInternalServerError,
errors.New("infra-command and infra-image are not implemented yet"))
return
}
// TODO long term we should break the following out of adapter and into libpod proper
// so that the cli and api can share the creation of a pod with the same options
if len(input.CGroupParent) > 0 {
options = append(options, libpod.WithPodCgroupParent(input.CGroupParent))
}
if len(input.Labels) > 0 {
labels, err = parse.GetAllLabels([]string{}, input.Labels)
if err != nil {
utils.Error(w, "Something went wrong.", http.StatusInternalServerError, err)
return
}
}
if len(labels) != 0 {
options = append(options, libpod.WithPodLabels(labels))
}
if len(input.Name) > 0 {
options = append(options, libpod.WithPodName(input.Name))
}
if len(input.Hostname) > 0 {
options = append(options, libpod.WithPodHostname(input.Hostname))
}
if input.Infra {
// TODO infra-image and infra-command are not supported in the libpod API yet. Will fix
// when implemented in libpod
options = append(options, libpod.WithInfraContainer())
sharedNamespaces := shared.DefaultKernelNamespaces
if len(input.Share) > 0 {
sharedNamespaces = input.Share
}
nsOptions, err := shared.GetNamespaceOptions(strings.Split(sharedNamespaces, ","))
if err != nil {
utils.Error(w, "Something went wrong.", http.StatusInternalServerError, err)
return
}
options = append(options, nsOptions...)
}
if len(input.Publish) > 0 {
portBindings, err := shared.CreatePortBindings(input.Publish)
if err != nil {
utils.Error(w, "Something went wrong.", http.StatusInternalServerError, err)
return
}
options = append(options, libpod.WithInfraContainerPorts(portBindings))
}
// always have containers use pod cgroups
// User Opt out is not yet supported
options = append(options, libpod.WithPodCgroups())
pod, err := runtime.NewPod(r.Context(), options...)
if err != nil {
http_code := http.StatusInternalServerError
if errors.Cause(err) == define.ErrPodExists {
http_code = http.StatusConflict
}
utils.Error(w, "Something went wrong.", http_code, err)
return
}
utils.WriteResponse(w, http.StatusCreated, handlers.IDResponse{ID: pod.CgroupParent()})
}
func Pods(w http.ResponseWriter, r *http.Request) {
// 200 ok
// 500 internal
var (
runtime = r.Context().Value("runtime").(*libpod.Runtime)
podInspectData []*libpod.PodInspect
)
decoder := r.Context().Value("decoder").(*schema.Decoder)
query := struct {
Filters map[string][]string `schema:"filters"`
}{
// 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 _, found := r.URL.Query()["filters"]; found {
utils.Error(w, "filters are not implemented yet", http.StatusInternalServerError, define.ErrNotImplemented)
return
}
pods, err := runtime.GetAllPods()
if err != nil {
utils.Error(w, "Something went wrong", http.StatusInternalServerError, err)
return
}
for _, pod := range pods {
data, err := pod.Inspect()
if err != nil {
utils.Error(w, "Something went wrong", http.StatusInternalServerError, err)
return
}
podInspectData = append(podInspectData, data)
}
utils.WriteResponse(w, http.StatusOK, podInspectData)
}
func PodInspect(w http.ResponseWriter, r *http.Request) {
runtime := r.Context().Value("runtime").(*libpod.Runtime)
name := utils.GetName(r)
pod, err := runtime.LookupPod(name)
if err != nil {
utils.PodNotFound(w, name, err)
return
}
podData, err := pod.Inspect()
if err != nil {
utils.Error(w, "Something went wrong", http.StatusInternalServerError, err)
return
}
utils.WriteResponse(w, http.StatusOK, podData)
}
func PodStop(w http.ResponseWriter, r *http.Request) {
var (
stopError error
runtime = r.Context().Value("runtime").(*libpod.Runtime)
decoder = r.Context().Value("decoder").(*schema.Decoder)
)
query := struct {
Timeout int `schema:"t"`
}{
// 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
}
allContainersStopped := true
name := utils.GetName(r)
pod, err := runtime.LookupPod(name)
if err != nil {
utils.PodNotFound(w, name, err)
return
}
// TODO we need to implement a pod.State/Status in libpod internal so libpod api
// users dont have to run through all containers.
podContainers, err := pod.AllContainers()
if err != nil {
utils.Error(w, "Something went wrong", http.StatusInternalServerError, err)
return
}
for _, con := range podContainers {
containerState, err := con.State()
if err != nil {
utils.Error(w, "Something went wrong", http.StatusInternalServerError, err)
return
}
if containerState == define.ContainerStateRunning {
allContainersStopped = false
break
}
}
if allContainersStopped {
utils.WriteResponse(w, http.StatusNotModified, "")
return
}
if query.Timeout > 0 {
_, stopError = pod.StopWithTimeout(r.Context(), false, query.Timeout)
} else {
_, stopError = pod.Stop(r.Context(), false)
}
if stopError != nil {
utils.Error(w, "Something went wrong", http.StatusInternalServerError, err)
return
}
utils.WriteResponse(w, http.StatusOK, "")
}
func PodStart(w http.ResponseWriter, r *http.Request) {
runtime := r.Context().Value("runtime").(*libpod.Runtime)
allContainersRunning := true
name := utils.GetName(r)
pod, err := runtime.LookupPod(name)
if err != nil {
utils.PodNotFound(w, name, err)
return
}
// TODO we need to implement a pod.State/Status in libpod internal so libpod api
// users dont have to run through all containers.
podContainers, err := pod.AllContainers()
if err != nil {
utils.Error(w, "Something went wrong", http.StatusInternalServerError, err)
return
}
for _, con := range podContainers {
containerState, err := con.State()
if err != nil {
utils.Error(w, "Something went wrong", http.StatusInternalServerError, err)
return
}
if containerState != define.ContainerStateRunning {
allContainersRunning = false
break
}
}
if allContainersRunning {
utils.WriteResponse(w, http.StatusNotModified, "")
return
}
if _, err := pod.Start(r.Context()); err != nil {
utils.Error(w, "Something went wrong", http.StatusInternalServerError, err)
return
}
utils.WriteResponse(w, http.StatusOK, "")
}
func PodDelete(w http.ResponseWriter, r *http.Request) {
var (
runtime = r.Context().Value("runtime").(*libpod.Runtime)
decoder = r.Context().Value("decoder").(*schema.Decoder)
)
query := struct {
Force bool `schema:"force"`
}{
// 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)
pod, err := runtime.LookupPod(name)
if err != nil {
utils.PodNotFound(w, name, err)
return
}
if err := runtime.RemovePod(r.Context(), pod, true, query.Force); err != nil {
utils.Error(w, "Something went wrong", http.StatusInternalServerError, err)
return
}
utils.WriteResponse(w, http.StatusNoContent, "")
}
func PodRestart(w http.ResponseWriter, r *http.Request) {
runtime := r.Context().Value("runtime").(*libpod.Runtime)
name := utils.GetName(r)
pod, err := runtime.LookupPod(name)
if err != nil {
utils.PodNotFound(w, name, err)
return
}
_, err = pod.Restart(r.Context())
if err != nil {
utils.Error(w, "Something went wrong", http.StatusInternalServerError, err)
return
}
utils.WriteResponse(w, http.StatusOK, "")
}
func PodPrune(w http.ResponseWriter, r *http.Request) {
var (
runtime = r.Context().Value("runtime").(*libpod.Runtime)
)
pruned, err := runtime.PrunePods()
if err != nil {
utils.InternalServerError(w, err)
return
}
utils.WriteResponse(w, http.StatusOK, pruned)
}
func PodPause(w http.ResponseWriter, r *http.Request) {
runtime := r.Context().Value("runtime").(*libpod.Runtime)
name := utils.GetName(r)
pod, err := runtime.LookupPod(name)
if err != nil {
utils.PodNotFound(w, name, err)
return
}
_, err = pod.Pause()
if err != nil {
utils.Error(w, "Something went wrong", http.StatusInternalServerError, err)
return
}
utils.WriteResponse(w, http.StatusNoContent, "")
}
func PodUnpause(w http.ResponseWriter, r *http.Request) {
runtime := r.Context().Value("runtime").(*libpod.Runtime)
name := utils.GetName(r)
pod, err := runtime.LookupPod(name)
if err != nil {
utils.PodNotFound(w, name, err)
return
}
_, err = pod.Unpause()
if err != nil {
utils.Error(w, "Something went wrong", http.StatusInternalServerError, err)
return
}
utils.WriteResponse(w, http.StatusOK, "")
}
func PodKill(w http.ResponseWriter, r *http.Request) {
var (
runtime = r.Context().Value("runtime").(*libpod.Runtime)
decoder = r.Context().Value("decoder").(*schema.Decoder)
signal = "SIGKILL"
)
query := struct {
signal string `schema:"signal"`
}{
// 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
}
muxVars := mux.Vars(r)
if _, found := muxVars["signal"]; found {
signal = query.signal
}
sig, err := util.ParseSignal(signal)
if err != nil {
utils.InternalServerError(w, errors.Wrapf(err, "unable to parse signal value"))
}
name := utils.GetName(r)
pod, err := runtime.LookupPod(name)
if err != nil {
utils.PodNotFound(w, name, err)
return
}
podStates, err := pod.Status()
if err != nil {
utils.Error(w, "Something went wrong.", http.StatusInternalServerError, err)
return
}
hasRunning := false
for _, s := range podStates {
if s == define.ContainerStateRunning {
hasRunning = true
break
}
}
if !hasRunning {
msg := fmt.Sprintf("Container %s is not running", pod.ID())
utils.Error(w, msg, http.StatusConflict, errors.Errorf("cannot kill a pod with no running containers: %s", pod.ID()))
return
}
_, err = pod.Kill(uint(sig))
if err != nil {
utils.Error(w, "Something went wrong", http.StatusInternalServerError, err)
return
}
utils.WriteResponse(w, http.StatusOK, "")
}
func PodExists(w http.ResponseWriter, r *http.Request) {
runtime := r.Context().Value("runtime").(*libpod.Runtime)
name := utils.GetName(r)
_, err := runtime.LookupPod(name)
if err != nil {
utils.PodNotFound(w, name, err)
return
}
utils.WriteResponse(w, http.StatusNoContent, "")
}