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Merge branch 'features/apc2s-pagination' into 'develop'

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Fix AP C2S pagination

Closes #866 and #751

See merge request pleroma/pleroma!2491
This commit is contained in:
Haelwenn 2020-06-05 14:52:09 +00:00
commit d74985af23
7 changed files with 114 additions and 107 deletions
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44
lib/pleroma/web/activity_pub/activity_pub_controller.ex
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@ -21,6 +21,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubController do
alias Pleroma.Web.ActivityPub.UserView
alias Pleroma.Web.ActivityPub.Utils
alias Pleroma.Web.ActivityPub.Visibility
alias Pleroma.Web.ControllerHelper
alias Pleroma.Web.Endpoint
alias Pleroma.Web.FederatingPlug
alias Pleroma.Web.Federator
@ -230,27 +231,22 @@ def outbox(
when page? in [true, "true"] do
with %User{} = user <- User.get_cached_by_nickname(nickname),
{:ok, user} <- User.ensure_keys_present(user) do
activities =
if params["max_id"] do
ActivityPub.fetch_user_activities(user, for_user, %{
"max_id" => params["max_id"],
# This is a hack because postgres generates inefficient queries when filtering by
# 'Answer', poll votes will be hidden by the visibility filter in this case anyway
"include_poll_votes" => true,
"limit" => 10
})
else
ActivityPub.fetch_user_activities(user, for_user, %{
"limit" => 10,
"include_poll_votes" => true
})
end
# "include_poll_votes" is a hack because postgres generates inefficient
# queries when filtering by 'Answer', poll votes will be hidden by the
# visibility filter in this case anyway
params =
params
|> Map.drop(["nickname", "page"])
|> Map.put("include_poll_votes", true)
activities = ActivityPub.fetch_user_activities(user, for_user, params)
conn
|> put_resp_content_type("application/activity+json")
|> put_view(UserView)
|> render("activity_collection_page.json", %{
activities: activities,
pagination: ControllerHelper.get_pagination_fields(conn, activities),
iri: "#{user.ap_id}/outbox"
})
end
@ -353,21 +349,23 @@ def read_inbox(
%{"nickname" => nickname, "page" => page?} = params
)
when page? in [true, "true"] do
params =
params
|> Map.drop(["nickname", "page"])
|> Map.put("blocking_user", user)
|> Map.put("user", user)
activities =
if params["max_id"] do
ActivityPub.fetch_activities([user.ap_id | User.following(user)], %{
"max_id" => params["max_id"],
"limit" => 10
})
else
ActivityPub.fetch_activities([user.ap_id | User.following(user)], %{"limit" => 10})
end
[user.ap_id | User.following(user)]
|> ActivityPub.fetch_activities(params)
|> Enum.reverse()
conn
|> put_resp_content_type("application/activity+json")
|> put_view(UserView)
|> render("activity_collection_page.json", %{
activities: activities,
pagination: ControllerHelper.get_pagination_fields(conn, activities),
iri: "#{user.ap_id}/inbox"
})
end

34
lib/pleroma/web/activity_pub/views/user_view.ex
View File

@ -213,34 +213,24 @@ def render("activity_collection.json", %{iri: iri}) do
|> Map.merge(Utils.make_json_ld_header())
end
def render("activity_collection_page.json", %{activities: activities, iri: iri}) do
# this is sorted chronologically, so first activity is the newest (max)
{max_id, min_id, collection} =
if length(activities) > 0 do
{
Enum.at(activities, 0).id,
Enum.at(Enum.reverse(activities), 0).id,
Enum.map(activities, fn act ->
{:ok, data} = Transmogrifier.prepare_outgoing(act.data)
data
end)
}
else
{
0,
0,
[]
}
end
def render("activity_collection_page.json", %{
activities: activities,
iri: iri,
pagination: pagination
}) do
collection =
Enum.map(activities, fn activity ->
{:ok, data} = Transmogrifier.prepare_outgoing(activity.data)
data
end)
%{
"id" => "#{iri}?max_id=#{max_id}&page=true",
"type" => "OrderedCollectionPage",
"partOf" => iri,
"orderedItems" => collection,
"next" => "#{iri}?max_id=#{min_id}&page=true"
"orderedItems" => collection
}
|> Map.merge(Utils.make_json_ld_header())
|> Map.merge(pagination)
end
defp maybe_put_total_items(map, false, _total), do: map

50
lib/pleroma/web/controller_helper.ex
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@ -5,6 +5,8 @@
defmodule Pleroma.Web.ControllerHelper do
use Pleroma.Web, :controller
alias Pleroma.Pagination
# As in Mastodon API, per https://api.rubyonrails.org/classes/ActiveModel/Type/Boolean.html
@falsy_param_values [false, 0, "0", "f", "F", "false", "False", "FALSE", "off", "OFF"]
@ -46,37 +48,47 @@ def add_link_headers(%{assigns: %{skip_link_headers: true}} = conn, _activities,
do: conn
def add_link_headers(conn, activities, extra_params) do
case get_pagination_fields(conn, activities, extra_params) do
%{"next" => next_url, "prev" => prev_url} ->
put_resp_header(conn, "link", "<#{next_url}>; rel=\"next\", <#{prev_url}>; rel=\"prev\"")
_ ->
conn
end
end
def get_pagination_fields(conn, activities, extra_params \\ %{}) do
case List.last(activities) do
%{id: max_id} ->
params =
conn.params
|> Map.drop(Map.keys(conn.path_params))
|> Map.drop(["since_id", "max_id", "min_id"])
|> Map.merge(extra_params)
limit =
params
|> Map.get("limit", "20")
|> String.to_integer()
|> Map.drop(Pagination.page_keys() -- ["limit", "order"])
min_id =
if length(activities) <= limit do
activities
|> List.first()
|> Map.get(:id)
else
activities
|> Enum.at(limit * -1)
|> Map.get(:id)
end
activities
|> List.first()
|> Map.get(:id)
next_url = current_url(conn, Map.merge(params, %{max_id: max_id}))
prev_url = current_url(conn, Map.merge(params, %{min_id: min_id}))
fields = %{
"next" => current_url(conn, Map.put(params, :max_id, max_id)),
"prev" => current_url(conn, Map.put(params, :min_id, min_id))
}
put_resp_header(conn, "link", "<#{next_url}>; rel=\"next\", <#{prev_url}>; rel=\"prev\"")
# Generating an `id` without already present pagination keys would
# need a query-restriction with an `q.id >= ^id` or `q.id <= ^id`
# instead of the `q.id > ^min_id` and `q.id < ^max_id`.
# This is because we only have ids present inside of the page, while
# `min_id`, `since_id` and `max_id` requires to know one outside of it.
if Map.take(conn.params, Pagination.page_keys() -- ["limit", "order"]) != [] do
Map.put(fields, "id", current_url(conn, conn.params))
else
fields
end
_ ->
conn
%{}
end
end

4
lib/pleroma/web/mastodon_api/controllers/timeline_controller.ex
View File

@ -51,10 +51,8 @@ def home(%{assigns: %{user: user}} = conn, params) do
|> Map.put("reply_filtering_user", user)
|> Map.put("user", user)
recipients = [user.ap_id | User.following(user)]
activities =
recipients
[user.ap_id | User.following(user)]
|> ActivityPub.fetch_activities(params)
|> Enum.reverse()

8
lib/pleroma/web/router.ex
View File

@ -571,13 +571,6 @@ defmodule Pleroma.Web.Router do
get("/mailer/unsubscribe/:token", Mailer.SubscriptionController, :unsubscribe)
end
scope "/", Pleroma.Web.ActivityPub do
# XXX: not really ostatus
pipe_through(:ostatus)
get("/users/:nickname/outbox", ActivityPubController, :outbox)
end
pipeline :ap_service_actor do
plug(:accepts, ["activity+json", "json"])
end
@ -602,6 +595,7 @@ defmodule Pleroma.Web.Router do
get("/api/ap/whoami", ActivityPubController, :whoami)
get("/users/:nickname/inbox", ActivityPubController, :read_inbox)
get("/users/:nickname/outbox", ActivityPubController, :outbox)
post("/users/:nickname/outbox", ActivityPubController, :update_outbox)
post("/api/ap/upload_media", ActivityPubController, :upload_media)

50
test/web/activity_pub/activity_pub_controller_test.exs
View File

@ -804,17 +804,63 @@ test "it requires authentication", %{conn: conn} do
end
describe "GET /users/:nickname/outbox" do
test "it paginates correctly", %{conn: conn} do
user = insert(:user)
conn = assign(conn, :user, user)
outbox_endpoint = user.ap_id <> "/outbox"
_posts =
for i <- 0..25 do
{:ok, activity} = CommonAPI.post(user, %{status: "post #{i}"})
activity
end
result =
conn
|> put_req_header("accept", "application/activity+json")
|> get(outbox_endpoint <> "?page=true")
|> json_response(200)
result_ids = Enum.map(result["orderedItems"], fn x -> x["id"] end)
assert length(result["orderedItems"]) == 20
assert length(result_ids) == 20
assert result["next"]
assert String.starts_with?(result["next"], outbox_endpoint)
result_next =
conn
|> put_req_header("accept", "application/activity+json")
|> get(result["next"])
|> json_response(200)
result_next_ids = Enum.map(result_next["orderedItems"], fn x -> x["id"] end)
assert length(result_next["orderedItems"]) == 6
assert length(result_next_ids) == 6
refute Enum.find(result_next_ids, fn x -> x in result_ids end)
refute Enum.find(result_ids, fn x -> x in result_next_ids end)
assert String.starts_with?(result["id"], outbox_endpoint)
result_next_again =
conn
|> put_req_header("accept", "application/activity+json")
|> get(result_next["id"])
|> json_response(200)
assert result_next == result_next_again
end
test "it returns 200 even if there're no activities", %{conn: conn} do
user = insert(:user)
outbox_endpoint = user.ap_id <> "/outbox"
conn =
conn
|> assign(:user, user)
|> put_req_header("accept", "application/activity+json")
|> get("/users/#{user.nickname}/outbox")
|> get(outbox_endpoint)
result = json_response(conn, 200)
assert user.ap_id <> "/outbox" == result["id"]
assert outbox_endpoint == result["id"]
end
test "it returns a note activity in a collection", %{conn: conn} do

31
test/web/activity_pub/views/user_view_test.exs
View File

@ -158,35 +158,4 @@ test "sets correct totalItems when follows are hidden but the follow counter is
assert %{"totalItems" => 1} = UserView.render("following.json", %{user: user})
end
end
test "activity collection page aginates correctly" do
user = insert(:user)
posts =
for i <- 0..25 do
{:ok, activity} = CommonAPI.post(user, %{status: "post #{i}"})
activity
end
# outbox sorts chronologically, newest first, with ten per page
posts = Enum.reverse(posts)
%{"next" => next_url} =
UserView.render("activity_collection_page.json", %{
iri: "#{user.ap_id}/outbox",
activities: Enum.take(posts, 10)
})
next_id = Enum.at(posts, 9).id
assert next_url =~ next_id
%{"next" => next_url} =
UserView.render("activity_collection_page.json", %{
iri: "#{user.ap_id}/outbox",
activities: Enum.take(Enum.drop(posts, 10), 10)
})
next_id = Enum.at(posts, 19).id
assert next_url =~ next_id
end
end