// changeInterfaces controls the interfaces system.
// Plugs can be connected to and disconnected from slots.
// When enableInternalInterfaceActions is true plugs and slots can also be
// explicitly added and removed.
func changeInterfaces(c *Command, r *http.Request) Response {
var a interfaceAction
decoder := json.NewDecoder(r.Body)
if err := decoder.Decode(&a); err != nil {
return BadRequest("cannot decode request body into an interface action: %v", err)
}
if a.Action == "" {
return BadRequest("interface action not specified")
}
if !c.d.enableInternalInterfaceActions && a.Action != "connect" && a.Action != "disconnect" {
return BadRequest("internal interface actions are disabled")
}
if len(a.Plugs) > 1 || len(a.Slots) > 1 {
return NotImplemented("many-to-many operations are not implemented")
}
if a.Action != "connect" && a.Action != "disconnect" {
return BadRequest("unsupported interface action: %q", a.Action)
}
if len(a.Plugs) == 0 || len(a.Slots) == 0 {
return BadRequest("at least one plug and slot is required")
}
var change *state.Change
var taskset *state.TaskSet
var err error
state := c.d.overlord.State()
state.Lock()
defer state.Unlock()
switch a.Action {
case "connect":
summary := fmt.Sprintf("Connect %s:%s to %s:%s", a.Plugs[0].Snap, a.Plugs[0].Name, a.Slots[0].Snap, a.Slots[0].Name)
change = state.NewChange("connect-snap", summary)
taskset, err = ifacestate.Connect(state, a.Plugs[0].Snap, a.Plugs[0].Name, a.Slots[0].Snap, a.Slots[0].Name)
case "disconnect":
summary := fmt.Sprintf("Disconnect %s:%s from %s:%s", a.Plugs[0].Snap, a.Plugs[0].Name, a.Slots[0].Snap, a.Slots[0].Name)
change = state.NewChange("disconnect-snap", summary)
taskset, err = ifacestate.Disconnect(state, a.Plugs[0].Snap, a.Plugs[0].Name, a.Slots[0].Snap, a.Slots[0].Name)
}
if err == nil {
change.AddAll(taskset)
}
if err != nil {
return BadRequest("%v", err)
}
state.EnsureBefore(0)
return AsyncResponse(nil, &Meta{Change: change.ID()})
}
func (inst *snapInstruction) update() (*state.Change, error) {
flags := snappy.DoInstallGC
if inst.LeaveOld {
flags = 0
}
state := inst.overlord.State()
state.Lock()
msg := fmt.Sprintf(i18n.G("Refresh %q snap"), inst.pkg)
if inst.Channel != "stable" && inst.Channel != "" {
msg = fmt.Sprintf(i18n.G("Refresh %q snap from %q channel"), inst.pkg, inst.Channel)
}
chg := state.NewChange("refresh-snap", msg)
ts, err := snapstateUpdate(state, inst.pkg, inst.Channel, inst.userID, flags)
if err == nil {
chg.AddAll(ts)
}
state.Unlock()
if err != nil {
return nil, err
}
state.EnsureBefore(0)
return chg, nil
}
func (inst *snapInstruction) deactivate() (*state.Change, error) {
state := inst.overlord.State()
state.Lock()
msg := fmt.Sprintf(i18n.G("Deactivate %q snap"), inst.pkg)
chg := state.NewChange("deactivate-snap", msg)
ts, err := snapstate.Deactivate(state, inst.pkg)
if err == nil {
chg.AddAll(ts)
}
state.Unlock()
if err != nil {
return nil, err
}
state.EnsureBefore(0)
return chg, nil
}
func (inst *snapInstruction) rollback() (*state.Change, error) {
state := inst.overlord.State()
state.Lock()
msg := fmt.Sprintf(i18n.G("Rollback %q snap"), inst.pkg)
chg := state.NewChange("rollback-snap", msg)
// use previous version
ver := ""
ts, err := snapstate.Rollback(state, inst.pkg, ver)
if err == nil {
chg.AddAll(ts)
}
state.Unlock()
if err != nil {
return nil, err
}
state.EnsureBefore(0)
return chg, nil
}
func (inst *snapInstruction) remove() (*state.Change, error) {
flags := snappy.DoRemoveGC
if inst.LeaveOld {
flags = 0
}
state := inst.overlord.State()
state.Lock()
msg := fmt.Sprintf(i18n.G("Remove %q snap"), inst.pkg)
chg := state.NewChange("remove-snap", msg)
ts, err := snapstate.Remove(state, inst.pkg, flags)
if err == nil {
chg.AddAll(ts)
}
state.Unlock()
if err != nil {
return nil, err
}
state.EnsureBefore(0)
return chg, nil
}
func sideloadSnap(c *Command, r *http.Request) Response {
route := c.d.router.Get(stateChangeCmd.Path)
if route == nil {
return InternalError("cannot find route for change")
}
body := r.Body
contentType := r.Header.Get("Content-Type")
if !strings.HasPrefix(contentType, "multipart/") {
return BadRequest("unknown content type: %s", contentType)
}
// POSTs to sideload snaps must be a multipart/form-data file upload.
_, params, err := mime.ParseMediaType(contentType)
if err != nil {
return BadRequest("cannot parse POST body: %v", err)
}
form, err := multipart.NewReader(r.Body, params["boundary"]).ReadForm(maxReadBuflen)
if err != nil {
return BadRequest("cannot read POST form: %v", err)
}
var flags snappy.InstallFlags
if len(form.Value["devmode"]) > 0 && form.Value["devmode"][0] == "true" {
flags |= snappy.DeveloperMode
}
// form.File is a map of arrays of *FileHeader things
// we just allow one (for now at least)
out:
for _, v := range form.File {
for i := range v {
body, err = v[i].Open()
if err != nil {
return BadRequest("cannot open POST form file: %v", err)
}
defer body.Close()
break out
}
}
defer form.RemoveAll()
tmpf, err := ioutil.TempFile("", "snapd-sideload-pkg-")
if err != nil {
return InternalError("cannot create temporary file: %v", err)
}
if _, err := io.Copy(tmpf, body); err != nil {
os.Remove(tmpf.Name())
return InternalError("cannot copy request into temporary file: %v", err)
}
snap := tmpf.Name()
state := c.d.overlord.State()
state.Lock()
defer state.Unlock()
msg := fmt.Sprintf(i18n.G("Install %q snap file"), snap)
chg := state.NewChange("install-snap", msg)
var userID int
user, err := UserFromRequest(state, r)
if err == nil {
userID = user.ID
} else if err != auth.ErrInvalidAuth {
return InternalError("%v", err)
}
err = ensureUbuntuCore(chg, userID)
if err == nil {
ts, err := snapstateInstallPath(state, snap, "", flags)
if err == nil {
chg.AddAll(ts)
}
}
go func() {
// XXX this needs to be a task in the manager; this is a hack to keep this branch smaller
<-chg.Ready()
os.Remove(snap)
}()
if err != nil {
return InternalError("cannot install snap file: %v", err)
}
state.EnsureBefore(0)
return AsyncResponse(nil, &Meta{Change: chg.ID()})
}