mirror of
https://github.com/containers/podman.git
synced 2025-11-04 17:07:20 +08:00
482ef7bfcf
This is something Docker does, and we did not do until now. Most difficult/annoying part was the REST API, where I did not really want to modify the struct being sent, so I made the new restart policy parameters query parameters instead. Testing was also a bit annoying, because testing restart policy always is. Signed-off-by: Matt Heon <mheon@redhat.com>
474 lines
14 KiB
Go
474 lines
14 KiB
Go
package libpod
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import (
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"encoding/json"
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"errors"
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"fmt"
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"net/http"
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"os"
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"strings"
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"github.com/containers/podman/v5/libpod"
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"github.com/containers/podman/v5/libpod/define"
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"github.com/containers/podman/v5/pkg/api/handlers"
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"github.com/containers/podman/v5/pkg/api/handlers/compat"
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"github.com/containers/podman/v5/pkg/api/handlers/utils"
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api "github.com/containers/podman/v5/pkg/api/types"
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"github.com/containers/podman/v5/pkg/domain/entities"
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"github.com/containers/podman/v5/pkg/domain/infra/abi"
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"github.com/containers/podman/v5/pkg/util"
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"github.com/gorilla/schema"
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"github.com/opencontainers/runtime-spec/specs-go"
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"github.com/sirupsen/logrus"
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)
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func ContainerExists(w http.ResponseWriter, r *http.Request) {
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decoder := r.Context().Value(api.DecoderKey).(*schema.Decoder)
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runtime := r.Context().Value(api.RuntimeKey).(*libpod.Runtime)
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// Now use the ABI implementation to prevent us from having duplicate
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// code.
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containerEngine := abi.ContainerEngine{Libpod: runtime}
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name := utils.GetName(r)
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query := struct {
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External bool `schema:"external"`
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}{
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// override any golang type defaults
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}
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if err := decoder.Decode(&query, r.URL.Query()); err != nil {
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utils.Error(w, http.StatusBadRequest, fmt.Errorf("failed to parse parameters for %s: %w", r.URL.String(), err))
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return
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}
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options := entities.ContainerExistsOptions{
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External: query.External,
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}
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report, err := containerEngine.ContainerExists(r.Context(), name, options)
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if err != nil {
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if errors.Is(err, define.ErrNoSuchCtr) {
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utils.ContainerNotFound(w, name, err)
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return
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}
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utils.InternalServerError(w, err)
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return
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}
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if report.Value {
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utils.WriteResponse(w, http.StatusNoContent, "")
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} else {
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utils.ContainerNotFound(w, name, define.ErrNoSuchCtr)
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}
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}
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func ListContainers(w http.ResponseWriter, r *http.Request) {
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decoder := r.Context().Value(api.DecoderKey).(*schema.Decoder)
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query := struct {
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All bool `schema:"all"`
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External bool `schema:"external"`
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Last int `schema:"last"` // alias for limit
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Limit int `schema:"limit"`
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Namespace bool `schema:"namespace"`
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Size bool `schema:"size"`
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Sync bool `schema:"sync"`
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}{
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// override any golang type defaults
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}
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filterMap, err := util.PrepareFilters(r)
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if err != nil {
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utils.Error(w, http.StatusInternalServerError, fmt.Errorf("failed to decode filter parameters for %s: %w", r.URL.String(), err))
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return
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}
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if err := decoder.Decode(&query, r.URL.Query()); err != nil {
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utils.Error(w, http.StatusInternalServerError, fmt.Errorf("failed to parse parameters for %s: %w", r.URL.String(), err))
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return
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}
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limit := query.Limit
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// Support `last` as an alias for `limit`. While Podman uses --last in
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// the CLI, the API is using `limit`. As we first used `last` in the
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// API as well, we decided to go with aliasing to prevent any
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// regression. See github.com/containers/podman/issues/6413.
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if _, found := r.URL.Query()["last"]; found {
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logrus.Info("List containers: received `last` parameter - overwriting `limit`")
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limit = query.Last
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}
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runtime := r.Context().Value(api.RuntimeKey).(*libpod.Runtime)
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// Now use the ABI implementation to prevent us from having duplicate
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// code.
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containerEngine := abi.ContainerEngine{Libpod: runtime}
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opts := entities.ContainerListOptions{
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All: query.All,
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External: query.External,
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Filters: *filterMap,
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Last: limit,
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Namespace: query.Namespace,
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// Always return Pod, should not be part of the API.
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// https://github.com/containers/podman/pull/7223
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Pod: true,
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Size: query.Size,
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Sync: query.Sync,
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}
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pss, err := containerEngine.ContainerList(r.Context(), opts)
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if err != nil {
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utils.InternalServerError(w, err)
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return
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}
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utils.WriteResponse(w, http.StatusOK, pss)
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}
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func GetContainer(w http.ResponseWriter, r *http.Request) {
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decoder := r.Context().Value(api.DecoderKey).(*schema.Decoder)
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query := struct {
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Size bool `schema:"size"`
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}{
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// override any golang type defaults
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}
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if err := decoder.Decode(&query, r.URL.Query()); err != nil {
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utils.Error(w, http.StatusBadRequest, fmt.Errorf("failed to parse parameters for %s: %w", r.URL.String(), err))
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return
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}
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runtime := r.Context().Value(api.RuntimeKey).(*libpod.Runtime)
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name := utils.GetName(r)
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container, err := runtime.LookupContainer(name)
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if err != nil {
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utils.ContainerNotFound(w, name, err)
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return
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}
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data, err := container.Inspect(query.Size)
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if err != nil {
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utils.InternalServerError(w, err)
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return
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}
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utils.WriteResponse(w, http.StatusOK, data)
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}
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func WaitContainer(w http.ResponseWriter, r *http.Request) {
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utils.WaitContainerLibpod(w, r)
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}
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func UnmountContainer(w http.ResponseWriter, r *http.Request) {
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runtime := r.Context().Value(api.RuntimeKey).(*libpod.Runtime)
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name := utils.GetName(r)
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conn, err := runtime.LookupContainer(name)
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if err != nil {
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utils.ContainerNotFound(w, name, err)
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return
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}
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// TODO In future it might be an improvement that libpod unmount return a
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// "container not mounted" error so we can surface that to the endpoint user
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if err := conn.Unmount(false); err != nil {
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utils.InternalServerError(w, err)
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return
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}
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utils.WriteResponse(w, http.StatusNoContent, "")
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}
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func MountContainer(w http.ResponseWriter, r *http.Request) {
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runtime := r.Context().Value(api.RuntimeKey).(*libpod.Runtime)
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name := utils.GetName(r)
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conn, err := runtime.LookupContainer(name)
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if err != nil {
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utils.ContainerNotFound(w, name, err)
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return
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}
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m, err := conn.Mount()
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if err != nil {
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utils.InternalServerError(w, err)
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return
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}
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utils.WriteResponse(w, http.StatusOK, m)
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}
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func ShowMountedContainers(w http.ResponseWriter, r *http.Request) {
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response := make(map[string]string)
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runtime := r.Context().Value(api.RuntimeKey).(*libpod.Runtime)
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conns, err := runtime.GetAllContainers()
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if err != nil {
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utils.InternalServerError(w, err)
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return
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}
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for _, conn := range conns {
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mounted, mountPoint, err := conn.Mounted()
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if err != nil {
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utils.InternalServerError(w, err)
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return
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}
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if !mounted {
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continue
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}
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response[conn.ID()] = mountPoint
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}
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utils.WriteResponse(w, http.StatusOK, response)
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}
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func Checkpoint(w http.ResponseWriter, r *http.Request) {
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runtime := r.Context().Value(api.RuntimeKey).(*libpod.Runtime)
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containerEngine := abi.ContainerEngine{Libpod: runtime}
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decoder := r.Context().Value(api.DecoderKey).(*schema.Decoder)
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query := struct {
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Keep bool `schema:"keep"`
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LeaveRunning bool `schema:"leaveRunning"`
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TCPEstablished bool `schema:"tcpEstablished"`
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Export bool `schema:"export"`
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IgnoreRootFS bool `schema:"ignoreRootFS"`
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PrintStats bool `schema:"printStats"`
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PreCheckpoint bool `schema:"preCheckpoint"`
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WithPrevious bool `schema:"withPrevious"`
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FileLocks bool `schema:"fileLocks"`
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CreateImage string `schema:"createImage"`
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}{
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// override any golang type defaults
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}
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if err := decoder.Decode(&query, r.URL.Query()); err != nil {
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utils.Error(w, http.StatusBadRequest, fmt.Errorf("failed to parse parameters for %s: %w", r.URL.String(), err))
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return
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}
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name := utils.GetName(r)
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if _, err := runtime.LookupContainer(name); err != nil {
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utils.ContainerNotFound(w, name, err)
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return
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}
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names := []string{name}
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options := entities.CheckpointOptions{
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Keep: query.Keep,
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LeaveRunning: query.LeaveRunning,
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TCPEstablished: query.TCPEstablished,
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IgnoreRootFS: query.IgnoreRootFS,
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PrintStats: query.PrintStats,
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PreCheckPoint: query.PreCheckpoint,
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WithPrevious: query.WithPrevious,
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FileLocks: query.FileLocks,
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CreateImage: query.CreateImage,
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}
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if query.Export {
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f, err := os.CreateTemp("", "checkpoint")
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if err != nil {
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utils.InternalServerError(w, err)
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return
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}
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defer os.Remove(f.Name())
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if err := f.Close(); err != nil {
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utils.InternalServerError(w, err)
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return
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}
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options.Export = f.Name()
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}
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reports, err := containerEngine.ContainerCheckpoint(r.Context(), names, options)
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if err != nil {
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utils.InternalServerError(w, err)
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return
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}
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if len(reports) != 1 {
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utils.InternalServerError(w, fmt.Errorf("expected 1 restore report but got %d", len(reports)))
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return
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}
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if reports[0].Err != nil {
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utils.InternalServerError(w, reports[0].Err)
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return
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}
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if !query.Export {
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utils.WriteResponse(w, http.StatusOK, reports[0])
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return
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}
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f, err := os.Open(options.Export)
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if err != nil {
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utils.InternalServerError(w, err)
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return
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}
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defer f.Close()
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utils.WriteResponse(w, http.StatusOK, f)
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}
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func Restore(w http.ResponseWriter, r *http.Request) {
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runtime := r.Context().Value(api.RuntimeKey).(*libpod.Runtime)
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containerEngine := abi.ContainerEngine{Libpod: runtime}
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decoder := r.Context().Value(api.DecoderKey).(*schema.Decoder)
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query := struct {
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Keep bool `schema:"keep"`
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TCPEstablished bool `schema:"tcpEstablished"`
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Import bool `schema:"import"`
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Name string `schema:"name"`
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IgnoreRootFS bool `schema:"ignoreRootFS"`
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IgnoreVolumes bool `schema:"ignoreVolumes"`
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IgnoreStaticIP bool `schema:"ignoreStaticIP"`
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IgnoreStaticMAC bool `schema:"ignoreStaticMAC"`
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PrintStats bool `schema:"printStats"`
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FileLocks bool `schema:"fileLocks"`
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PublishPorts string `schema:"publishPorts"`
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Pod string `schema:"pod"`
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}{
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// override any golang type defaults
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}
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if err := decoder.Decode(&query, r.URL.Query()); err != nil {
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utils.Error(w, http.StatusBadRequest, fmt.Errorf("failed to parse parameters for %s: %w", r.URL.String(), err))
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return
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}
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options := entities.RestoreOptions{
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Name: query.Name,
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Keep: query.Keep,
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TCPEstablished: query.TCPEstablished,
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IgnoreRootFS: query.IgnoreRootFS,
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IgnoreVolumes: query.IgnoreVolumes,
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IgnoreStaticIP: query.IgnoreStaticIP,
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IgnoreStaticMAC: query.IgnoreStaticMAC,
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PrintStats: query.PrintStats,
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FileLocks: query.FileLocks,
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PublishPorts: strings.Fields(query.PublishPorts),
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Pod: query.Pod,
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}
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var names []string
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if query.Import {
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t, err := os.CreateTemp("", "restore")
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if err != nil {
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utils.InternalServerError(w, err)
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return
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}
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defer os.Remove(t.Name())
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if err := compat.SaveFromBody(t, r); err != nil {
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utils.InternalServerError(w, err)
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return
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}
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options.Import = t.Name()
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} else {
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name := utils.GetName(r)
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if _, err := runtime.LookupContainer(name); err != nil {
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// If container was not found, check if this is a checkpoint image
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ir := abi.ImageEngine{Libpod: runtime}
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report, err := ir.Exists(r.Context(), name)
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if err != nil {
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utils.Error(w, http.StatusNotFound, fmt.Errorf("failed to find container or checkpoint image %s: %w", name, err))
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return
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}
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if !report.Value {
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utils.Error(w, http.StatusNotFound, fmt.Errorf("failed to find container or checkpoint image %s", name))
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return
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}
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}
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names = []string{name}
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}
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reports, err := containerEngine.ContainerRestore(r.Context(), names, options)
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if err != nil {
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utils.InternalServerError(w, err)
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return
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}
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if len(reports) != 1 {
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utils.InternalServerError(w, fmt.Errorf("expected 1 restore report but got %d", len(reports)))
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return
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}
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if reports[0].Err != nil {
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utils.InternalServerError(w, reports[0].Err)
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return
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}
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utils.WriteResponse(w, http.StatusOK, reports[0])
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}
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func InitContainer(w http.ResponseWriter, r *http.Request) {
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name := utils.GetName(r)
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runtime := r.Context().Value(api.RuntimeKey).(*libpod.Runtime)
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ctr, err := runtime.LookupContainer(name)
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if err != nil {
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utils.ContainerNotFound(w, name, err)
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return
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}
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err = ctr.Init(r.Context(), ctr.PodID() != "")
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if errors.Is(err, define.ErrCtrStateInvalid) {
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utils.Error(w, http.StatusNotModified, err)
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return
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}
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if err != nil {
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utils.InternalServerError(w, err)
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return
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}
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utils.WriteResponse(w, http.StatusNoContent, "")
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}
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func UpdateContainer(w http.ResponseWriter, r *http.Request) {
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name := utils.GetName(r)
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runtime := r.Context().Value(api.RuntimeKey).(*libpod.Runtime)
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decoder := utils.GetDecoder(r)
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query := struct {
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RestartPolicy string `schema:"restartPolicy"`
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RestartRetries uint `schema:"restartRetries"`
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}{
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// override any golang type defaults
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}
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if err := decoder.Decode(&query, r.URL.Query()); err != nil {
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utils.Error(w, http.StatusBadRequest, fmt.Errorf("failed to parse parameters for %s: %w", r.URL.String(), err))
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return
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}
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ctr, err := runtime.LookupContainer(name)
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if err != nil {
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utils.ContainerNotFound(w, name, err)
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return
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}
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var restartPolicy *string
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var restartRetries *uint
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if query.RestartPolicy != "" {
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restartPolicy = &query.RestartPolicy
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if query.RestartPolicy == define.RestartPolicyOnFailure {
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restartRetries = &query.RestartRetries
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} else if query.RestartRetries != 0 {
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utils.Error(w, http.StatusBadRequest, errors.New("cannot set restart retries unless restart policy is on-failure"))
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return
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}
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} else if query.RestartRetries != 0 {
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utils.Error(w, http.StatusBadRequest, errors.New("cannot set restart retries unless restart policy is set"))
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return
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}
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options := &handlers.UpdateEntities{Resources: &specs.LinuxResources{}}
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if err := json.NewDecoder(r.Body).Decode(&options.Resources); err != nil {
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utils.Error(w, http.StatusInternalServerError, fmt.Errorf("decode(): %w", err))
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return
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}
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err = ctr.Update(options.Resources, restartPolicy, restartRetries)
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if err != nil {
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utils.InternalServerError(w, err)
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return
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}
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utils.WriteResponse(w, http.StatusCreated, ctr.ID())
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}
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func ShouldRestart(w http.ResponseWriter, r *http.Request) {
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runtime := r.Context().Value(api.RuntimeKey).(*libpod.Runtime)
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// Now use the ABI implementation to prevent us from having duplicate
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// code.
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containerEngine := abi.ContainerEngine{Libpod: runtime}
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name := utils.GetName(r)
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report, err := containerEngine.ShouldRestart(r.Context(), name)
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if err != nil {
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if errors.Is(err, define.ErrNoSuchCtr) {
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utils.ContainerNotFound(w, name, err)
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return
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}
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utils.InternalServerError(w, err)
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return
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}
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if report.Value {
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utils.WriteResponse(w, http.StatusNoContent, "")
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} else {
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utils.ContainerNotFound(w, name, define.ErrNoSuchCtr)
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}
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}
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