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-rw-r--r--pkg/api/handlers/compat/volumes.go259
1 files changed, 259 insertions, 0 deletions
diff --git a/pkg/api/handlers/compat/volumes.go b/pkg/api/handlers/compat/volumes.go
new file mode 100644
index 000000000..1c9366409
--- /dev/null
+++ b/pkg/api/handlers/compat/volumes.go
@@ -0,0 +1,259 @@
+package compat
+
+import (
+ "encoding/json"
+ "net/http"
+ "time"
+
+ "github.com/containers/libpod/libpod"
+ "github.com/containers/libpod/libpod/define"
+ "github.com/containers/libpod/pkg/api/handlers/utils"
+ "github.com/containers/libpod/pkg/domain/filters"
+ "github.com/containers/libpod/pkg/domain/infra/abi/parse"
+ docker_api_types "github.com/docker/docker/api/types"
+ docker_api_types_volume "github.com/docker/docker/api/types/volume"
+ "github.com/gorilla/schema"
+ "github.com/pkg/errors"
+)
+
+func ListVolumes(w http.ResponseWriter, r *http.Request) {
+ var (
+ decoder = r.Context().Value("decoder").(*schema.Decoder)
+ runtime = r.Context().Value("runtime").(*libpod.Runtime)
+ )
+ 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
+ }
+
+ // Reject any libpod specific filters since `GenerateVolumeFilters()` will
+ // happily parse them for us.
+ for filter := range query.Filters {
+ if filter == "opts" {
+ utils.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest,
+ errors.Errorf("unsupported libpod filters passed to docker endpoint"))
+ return
+ }
+ }
+ volumeFilters, err := filters.GenerateVolumeFilters(query.Filters)
+ if err != nil {
+ utils.InternalServerError(w, err)
+ return
+ }
+
+ vols, err := runtime.Volumes(volumeFilters...)
+ if err != nil {
+ utils.InternalServerError(w, err)
+ return
+ }
+ volumeConfigs := make([]*docker_api_types.Volume, 0, len(vols))
+ for _, v := range vols {
+ config := docker_api_types.Volume{
+ Name: v.Name(),
+ Driver: v.Driver(),
+ Mountpoint: v.MountPoint(),
+ CreatedAt: v.CreatedTime().Format(time.RFC3339),
+ Labels: v.Labels(),
+ Scope: v.Scope(),
+ Options: v.Options(),
+ }
+ volumeConfigs = append(volumeConfigs, &config)
+ }
+ response := docker_api_types_volume.VolumeListOKBody{
+ Volumes: volumeConfigs,
+ Warnings: []string{},
+ }
+ utils.WriteResponse(w, http.StatusOK, response)
+}
+
+func CreateVolume(w http.ResponseWriter, r *http.Request) {
+ var (
+ volumeOptions []libpod.VolumeCreateOption
+ runtime = r.Context().Value("runtime").(*libpod.Runtime)
+ decoder = r.Context().Value("decoder").(*schema.Decoder)
+ )
+ /* No query string data*/
+ query := struct{}{}
+ 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
+ }
+ // decode params from body
+ input := docker_api_types_volume.VolumeCreateBody{}
+ 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.Name) > 0 {
+ volumeOptions = append(volumeOptions, libpod.WithVolumeName(input.Name))
+ }
+ if len(input.Driver) > 0 {
+ volumeOptions = append(volumeOptions, libpod.WithVolumeDriver(input.Driver))
+ }
+ if len(input.Labels) > 0 {
+ volumeOptions = append(volumeOptions, libpod.WithVolumeLabels(input.Labels))
+ }
+ if len(input.DriverOpts) > 0 {
+ parsedOptions, err := parse.VolumeOptions(input.DriverOpts)
+ if err != nil {
+ utils.InternalServerError(w, err)
+ return
+ }
+ volumeOptions = append(volumeOptions, parsedOptions...)
+ }
+ vol, err := runtime.NewVolume(r.Context(), volumeOptions...)
+ if err != nil {
+ utils.InternalServerError(w, err)
+ return
+ }
+ config, err := vol.Config()
+ if err != nil {
+ utils.InternalServerError(w, err)
+ return
+ }
+ volResponse := docker_api_types.Volume{
+ Name: config.Name,
+ Driver: config.Driver,
+ Mountpoint: config.MountPoint,
+ CreatedAt: config.CreatedTime.Format(time.RFC3339),
+ Labels: config.Labels,
+ Options: config.Options,
+ Scope: "local",
+ // ^^ We don't have volume scoping so we'll just claim it's "local"
+ // like we do in the `libpod.Volume.Scope()` method
+ //
+ // TODO: We don't include the volume `Status` or `UsageData`, but both
+ // are nullable in the Docker engine API spec so that's fine for now
+ }
+ utils.WriteResponse(w, http.StatusCreated, volResponse)
+}
+
+func InspectVolume(w http.ResponseWriter, r *http.Request) {
+ var (
+ runtime = r.Context().Value("runtime").(*libpod.Runtime)
+ )
+ name := utils.GetName(r)
+ vol, err := runtime.GetVolume(name)
+ if err != nil {
+ utils.VolumeNotFound(w, name, err)
+ return
+ }
+ volResponse := docker_api_types.Volume{
+ Name: vol.Name(),
+ Driver: vol.Driver(),
+ Mountpoint: vol.MountPoint(),
+ CreatedAt: vol.CreatedTime().Format(time.RFC3339),
+ Labels: vol.Labels(),
+ Options: vol.Options(),
+ Scope: vol.Scope(),
+ // TODO: As above, we don't return `Status` or `UsageData` yet
+ }
+ utils.WriteResponse(w, http.StatusOK, volResponse)
+}
+
+func RemoveVolume(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
+ }
+
+ /* The implications for `force` differ between Docker and us, so we can't
+ * simply pass the `force` parameter to `runeimt.RemoveVolume()`.
+ * Specifically, Docker's behavior seems to be that `force` means "do not
+ * error on missing volume"; ours means "remove any not-running containers
+ * using the volume at the same time".
+ *
+ * With this in mind, we only consider the `force` query parameter when we
+ * hunt for specified volume by name, using it to seletively return a 204
+ * or blow up depending on `force` being truthy or falsey/unset
+ * respectively.
+ */
+ name := utils.GetName(r)
+ vol, err := runtime.LookupVolume(name)
+ if err == nil {
+ // As above, we do not pass `force` from the query parameters here
+ if err := runtime.RemoveVolume(r.Context(), vol, false); err != nil {
+ if errors.Cause(err) == define.ErrVolumeBeingUsed {
+ utils.Error(w, "volumes being used", http.StatusConflict, err)
+ } else {
+ utils.InternalServerError(w, err)
+ }
+ } else {
+ // Success
+ utils.WriteResponse(w, http.StatusNoContent, "")
+ }
+ } else {
+ if !query.Force {
+ utils.VolumeNotFound(w, name, err)
+ } else {
+ // Volume does not exist and `force` is truthy - this emulates what
+ // Docker would do when told to `force` removal of a nonextant
+ // volume
+ utils.WriteResponse(w, http.StatusNoContent, "")
+ }
+ }
+}
+
+func PruneVolumes(w http.ResponseWriter, r *http.Request) {
+ var (
+ runtime = r.Context().Value("runtime").(*libpod.Runtime)
+ decoder = r.Context().Value("decoder").(*schema.Decoder)
+ )
+ // For some reason the prune filters are query parameters even though this
+ // is a POST endpoint
+ 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, "Something went wrong.", http.StatusBadRequest, errors.Wrapf(err, "Failed to parse parameters for %s", r.URL.String()))
+ return
+ }
+ // TODO: We have no ability to pass pruning filters to `PruneVolumes()` so
+ // we'll explicitly reject the request if we see any
+ if len(query.Filters) > 0 {
+ utils.InternalServerError(w, errors.New("filters for pruning volumes is not implemented"))
+ return
+ }
+
+ pruned, err := runtime.PruneVolumes(r.Context())
+ if err != nil {
+ utils.InternalServerError(w, err)
+ return
+ }
+ prunedIds := make([]string, 0, len(pruned))
+ for k := range pruned {
+ // XXX: This drops any pruning per-volume error messages on the floor
+ prunedIds = append(prunedIds, k)
+ }
+ pruneResponse := docker_api_types.VolumesPruneReport{
+ VolumesDeleted: prunedIds,
+ // TODO: We don't have any insight into how much space was reclaimed
+ // from `PruneVolumes()` but it's not nullable
+ SpaceReclaimed: 0,
+ }
+
+ utils.WriteResponse(w, http.StatusOK, pruneResponse)
+}