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Finish pub.database implementation

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This commit is contained in:
Anthony Wang 2022-04-05 10:30:52 -05:00
parent 325448fadf
commit fccc924403
Signed by: a
GPG key ID: BC96B00AEC5F2D76
1 changed files with 89 additions and 8 deletions
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97
modules/activitypub/database.go
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@ -128,7 +128,7 @@ func (m *myDB) Update(c context.Context,
func (m *myDB) Delete(c context.Context,
id *url.URL) error {
// Remove a payload in our in-memory map.
m.Delete(c, id)
m.content.Delete(id.String())
return nil
}
@ -154,14 +154,16 @@ func (m *myDB) getOrderedCollectionPage(inboxIRI *url.URL) (vocab.ActivityStream
// to an edited OrderedCollectionPage. Implementation is left as an
// exercise for the reader.
func (m *myDB) applyDiffOrderedCollection(storedInbox vocab.ActivityStreamsOrderedCollection, inbox vocab.ActivityStreamsOrderedCollectionPage) vocab.ActivityStreamsOrderedCollectionPage {
// TODO
return inbox
}
// saveToContent is a helper method to save an
// ActivityStream type. Implementation is left as an exercise for the
// reader.
func (m *myDB) saveToContent(updatedInbox vocab.ActivityStreamsOrderedCollectionPage) error {
func (m *myDB) saveToContent(c context.Context, inbox vocab.ActivityStreamsOrderedCollectionPage) error {
m.Create(c, inbox)
return nil
}
func (m *myDB) InboxContains(c context.Context,
@ -236,7 +238,7 @@ func (m *myDB) SetInbox(c context.Context,
// saveToContent is a helper method to save an
// ActivityStream type. Implementation is left as an exercise for the
// reader.
return m.saveToContent(updatedInbox)
return m.saveToContent(c, updatedInbox)
}
func (m *myDB) GetOutbox(c context.Context,
@ -246,8 +248,30 @@ func (m *myDB) GetOutbox(c context.Context,
}
func (m *myDB) SetOutbox(c context.Context,
inbox vocab.ActivityStreamsOrderedCollectionPage) error {
outbox vocab.ActivityStreamsOrderedCollectionPage) error {
// Similar to `SetInbox`, but for the outbox. See `SetInbox`.
// The goal here is to set an outbox at the specified IRI, with any
// changes to the page made persistent. Since the outbox has been Locked,
// it is OK to assume that no other concurrent goroutine has changed the
// outbox in the meantime.
// getOrderedCollection is a helper method to fetch an
// OrderedCollection. It is not implemented in this tutorial, and
// uses the map m.content to do the lookup.
storedOutbox, err := m.getOrderedCollection(outbox.GetJSONLDId().GetIRI())
if err != nil {
return err
}
// applyDiffOrderedCollection is a helper method to apply changes due
// to an edited OrderedCollectionPage. Implementation is left as an
// exercise for the reader.
updatedOutbox := m.applyDiffOrderedCollection(storedOutbox, outbox)
// saveToContent is a helper method to save an
// ActivityStream type. Implementation is left as an exercise for the
// reader.
return m.saveToContent(c, updatedOutbox)
}
func (m *myDB) ActorForOutbox(c context.Context,
@ -285,6 +309,13 @@ func (m *myDB) NewID(c context.Context,
return t.GetJSONLDId().GetIRI(), nil
}
// getPerson is a helper method that returns an actor on this server
// with a Person ActivityStreams type. It is not implemented in this tutorial.
func (m *myDB) getPerson(actorIRI *url.URL) (person vocab.ActivityStreamsPerson, err error) {
val, _ := m.content.Load(actorIRI.String())
return val.(*content).data.(vocab.ActivityStreamsPerson), nil
}
func (m *myDB) Followers(c context.Context,
actorIRI *url.URL) (followers vocab.ActivityStreamsCollection, err error) {
// Get the followers collection from the actor with `actorIRI`.
@ -316,15 +347,65 @@ func (m *myDB) Followers(c context.Context,
}
func (m *myDB) Following(c context.Context,
actorIRI *url.URL) (followers vocab.ActivityStreamsCollection, err error) {
actorIRI *url.URL) (following vocab.ActivityStreamsCollection, err error) {
// Get the following collection from the actor with `actorIRI`.
// Implementation is similar to `Followers`. See `Followers`.
// getPerson is a helper method that returns an actor on this server
// with a Person ActivityStreams type. It is not implemented in this tutorial.
var person vocab.ActivityStreamsPerson
person, err = m.getPerson(actorIRI)
if err != nil {
return
}
// Let's get their following property, ensure it exists, and then
// fetch it with a familiar helper method.
f := person.GetActivityStreamsFollowing()
if f == nil {
err = errors.New("no following collection")
return
}
// Note: at this point f is not the OrderedCollection itself yet. It is
// an opaque box (it could be an IRI, an OrderedCollection, or something
// extending an OrderedCollection).
followingId, err := pub.ToId(f)
if err != nil {
return
}
val, err := m.getOrderedCollection(followingId)
following = val.(vocab.ActivityStreamsCollection)
return
}
func (m *myDB) Liked(c context.Context,
actorIRI *url.URL) (followers vocab.ActivityStreamsCollection, err error) {
actorIRI *url.URL) (liked vocab.ActivityStreamsCollection, err error) {
// Get the liked collection from the actor with `actorIRI`.
// Implementation is similar to `Followers`. See `Followers`.
// getPerson is a helper method that returns an actor on this server
// with a Person ActivityStreams type. It is not implemented in this tutorial.
var person vocab.ActivityStreamsPerson
person, err = m.getPerson(actorIRI)
if err != nil {
return
}
// Let's get their liked property, ensure it exists, and then
// fetch it with a familiar helper method.
f := person.GetActivityStreamsLiked()
if f == nil {
err = errors.New("no liked collection")
return
}
// Note: at this point f is not the OrderedCollection itself yet. It is
// an opaque box (it could be an IRI, an OrderedCollection, or something
// extending an OrderedCollection).
likedId, err := pub.ToId(f)
if err != nil {
return
}
val, err := m.getOrderedCollection(likedId)
liked = val.(vocab.ActivityStreamsCollection)
return
}