// WatchActionNotifications returns a StringsWatcher for observing
// incoming action calls to a unit. See also state/watcher.go
// Unit.WatchActionNotifications(). This method is called from
// api/uniter/uniter.go WatchActionNotifications().
func (u *UniterAPIV3) WatchActionNotifications(args params.Entities) (params.StringsWatchResults, error) {
tagToActionReceiver := common.TagToActionReceiverFn(u.st.FindEntity)
watchOne := common.WatchOneActionReceiverNotifications(tagToActionReceiver, u.resources.Register)
canAccess, err := u.accessUnit()
if err != nil {
return params.StringsWatchResults{}, err
}
return common.WatchActionNotifications(args, canAccess, watchOne), nil
}
func (s *actionsSuite) TestWatchOneActionReceiverNotifications(c *gc.C) {
expectErr := errors.New("zwoosh")
registerFunc := func(common.Resource) string { return "bambalam" }
tagToActionReceiver := common.TagToActionReceiverFn(makeFindEntity(map[string]state.Entity{
"machine-1": &fakeActionReceiver{watcher: &fakeWatcher{}},
"machine-2": &fakeActionReceiver{watcher: &fakeWatcher{err: expectErr}},
}))
watchOneFn := common.WatchOneActionReceiverNotifications(tagToActionReceiver, registerFunc)
for i, test := range []struct {
tag names.Tag
err string
watcherId string
}{{
tag: names.NewMachineTag("0"),
err: "id not found",
}, {
tag: names.NewMachineTag("1"),
watcherId: "bambalam",
}, {
tag: names.NewMachineTag("2"),
err: "zwoosh",
}} {
c.Logf("test %d", i)
c.Logf(test.tag.String())
result, err := watchOneFn(test.tag)
if test.err != "" {
c.Check(err, gc.ErrorMatches, test.err)
c.Check(result, jc.DeepEquals, params.StringsWatchResult{})
} else {
c.Check(err, jc.ErrorIsNil)
c.Check(result.StringsWatcherId, gc.Equals, test.watcherId)
}
}
}
// WatchActionNotifications returns a StringsWatcher for observing
// incoming action calls to a machine.
func (f *Facade) WatchActionNotifications(args params.Entities) params.StringsWatchResults {
tagToActionReceiver := f.backend.TagToActionReceiverFn(f.backend.FindEntity)
watchOne := common.WatchOneActionReceiverNotifications(tagToActionReceiver, f.resources.Register)
return common.WatchActionNotifications(args, f.accessMachine, watchOne)
}