custom loader for json-ld

config/config.exs

@@ -14,4 +14,10 @@ config :vonbraun, Vonbraun.Cache,
   # GC max timeout: 10 min
   gc_cleanup_max_timeout: :timer.minutes(10)
 
+config :vonbraun,
+  json_ld: %{
+    "https://www.w3.org/ns/activitystreams" =>
+      File.read!(Path.join(Path.dirname(__DIR__), "priv/jsonld/activitystreams.json"))
+  }
+
 import_config "#{Mix.env()}.exs"

lib/vonbraun/application.ex

@@ -8,6 +8,7 @@ defmodule Vonbraun.Application do
   @impl true
   def start(_type, _args) do
     children = [
+      Vonbraun.JSONLD.DocumentLoaderAgent,
       Vonbraun.Cache,
       Vonbraun.KeyAgent,
       Vonbraun.ActivityPub.Handler,

lib/vonbraun/inbox_router.ex

@@ -32,6 +32,12 @@ defmodule Vonbraun.InboxRouter do
              {:load, {:ok, public_key}} <- {:load, ExPublicKey.loads(public_key_pem)},
              {:verify, true} <-
                {:verify, HTTPSignature.verify_post_signature(conn, body, public_key)},
+             {:expand, [activity]} <-
+               {:expand,
+                JSON.LD.expand(activity, %JSON.LD.Options{
+                  compact_arrays: false,
+                  document_loader: Vonbraun.JSONLD.DocumentLoaderAgent
+                })},
              {:send, {:ok, response}} <- {:send, handle(activity, actor)} do
           status_code =
             case response do

lib/vonbraun/json_ld/document_loader_agent.ex

@@ -0,0 +1,91 @@
+defmodule Vonbraun.JSONLD.DocumentLoaderAgent do
+  alias JSON.LD.DocumentLoader.RemoteDocument
+  alias Req.Response
+  use Agent
+
+  @behaviour JSON.LD.DocumentLoader
+
+  def start_link(_opts) do
+    Agent.start_link(&preload/0, name: __MODULE__)
+  end
+
+  defp preload() do
+    Application.get_env(:vonbraun, :jsonld)
+    |> Enum.reduce(Map.new(), fn {url, data}, map ->
+      Map.put(map, url, {:ok, Jason.decode!(data)})
+    end)
+  end
+
+  @spec parse_link_header(String.t()) :: {String.t(), map()} | nil
+  defp parse_link_header(content) do
+    [first | prop_strings] = String.split(content, ~r/\s*;\s*/)
+
+    with [_, url] <- Regex.run(~r/\A<([^>]+)>\Z/, first) do
+      props =
+        Map.new(prop_strings, fn prop_string ->
+          [_, key, value] = Regex.run(~r/\A([^=]+)=\"([^\"]+)\"\Z/, prop_string)
+
+          {key, value}
+        end)
+
+      {url, props}
+    end
+  end
+
+  defp http_get(url) when is_binary(url) do
+    case Req.get(url, headers: [{"accept", "application/ld+json"}]) do
+      {:ok,
+       %Response{
+         :status => status,
+         :body => %{} = body,
+         :headers => %{"content-type" => ["application/ld+json"]}
+       }}
+      when status >= 200 and status <= 299 ->
+        {:ok, body}
+
+      {:ok, %Response{:headers => %{"link" => [content]}}} when is_binary(content) ->
+        with {link_url, props} <- parse_link_header(content),
+             {:match, %{"rel" => "alternate", "type" => "application/ld+json"}} <- {:match, props} do
+          down_url = String.downcase(link_url)
+
+          if String.starts_with?(down_url, "http://") || String.starts_with?(down_url, "https://") do
+            http_get(url)
+          else
+            # Probably relative path
+            url =
+              link_url
+              |> URI.parse()
+              |> Map.put(:path, url)
+              |> URI.to_string()
+
+            http_get(url)
+          end
+        end
+
+      # Catchall for unmatching responses
+      {:ok, response = %Response{}} ->
+        {:error, response}
+
+        # Fallthrough for :error case
+    end
+  end
+
+  @spec load(String.t(), any()) :: {:ok, RemoteDocument.t()} | {:error, any()}
+  def load(url, _options) when is_binary(url) do
+    with {:cache, nil} <- {:cache, Agent.get(__MODULE__, fn state -> Map.get(state, url) end)},
+         {:get, {:ok, body}} <-
+           {:get, http_get(url)},
+         {:data, data} <- {:data, %RemoteDocument{document: body, document_url: url}},
+         {:update, :ok} <-
+           {:update, Agent.update(__MODULE__, fn state -> Map.put(state, url, data) end)} do
+      {:ok, body}
+    else
+      {:cache, response} ->
+        response
+
+      {:get, error = {:error, _}} ->
+        Agent.update(__MODULE__, fn state -> Map.put(state, url, error) end)
+        error
+    end
+  end
+end

mix.exs

@@ -30,7 +30,8 @@ defmodule Vonbraun.MixProject do
       {:req, "~> 0.5.0"},
       {:nebulex, "~> 2.6"},
       {:nebulex_adapters_cachex, "~> 2.1"},
-      {:decorator, "~> 1.4"}
+      {:decorator, "~> 1.4"},
+      {:json_ld, "~> 0.3"}
     ]
   end
 end

mix.lock

@@ -20,8 +20,10 @@
   "gettext": {:hex, :gettext, "0.26.1", "38e14ea5dcf962d1fc9f361b63ea07c0ce715a8ef1f9e82d3dfb8e67e0416715", [:mix], [{:expo, "~> 0.5.1 or ~> 1.0", [hex: :expo, repo: "hexpm", optional: false]}], "hexpm", "01ce56f188b9dc28780a52783d6529ad2bc7124f9744e571e1ee4ea88bf08734"},
   "hackney": {:hex, :hackney, "1.20.1", "8d97aec62ddddd757d128bfd1df6c5861093419f8f7a4223823537bad5d064e2", [:rebar3], [{:certifi, "~> 2.12.0", [hex: :certifi, repo: "hexpm", optional: false]}, {:idna, "~> 6.1.0", [hex: :idna, repo: "hexpm", optional: false]}, {:metrics, "~> 1.0.0", [hex: :metrics, repo: "hexpm", optional: false]}, {:mimerl, "~> 1.1", [hex: :mimerl, repo: "hexpm", optional: false]}, {:parse_trans, "3.4.1", [hex: :parse_trans, repo: "hexpm", optional: false]}, {:ssl_verify_fun, "~> 1.1.0", [hex: :ssl_verify_fun, repo: "hexpm", optional: false]}, {:unicode_util_compat, "~> 0.7.0", [hex: :unicode_util_compat, repo: "hexpm", optional: false]}], "hexpm", "fe9094e5f1a2a2c0a7d10918fee36bfec0ec2a979994cff8cfe8058cd9af38e3"},
   "hpax": {:hex, :hpax, "1.0.0", "28dcf54509fe2152a3d040e4e3df5b265dcb6cb532029ecbacf4ce52caea3fd2", [:mix], [], "hexpm", "7f1314731d711e2ca5fdc7fd361296593fc2542570b3105595bb0bc6d0fad601"},
+  "httpoison": {:hex, :httpoison, "2.2.1", "87b7ed6d95db0389f7df02779644171d7319d319178f6680438167d7b69b1f3d", [:mix], [{:hackney, "~> 1.17", [hex: :hackney, repo: "hexpm", optional: false]}], "hexpm", "51364e6d2f429d80e14fe4b5f8e39719cacd03eb3f9a9286e61e216feac2d2df"},
   "idna": {:hex, :idna, "6.1.1", "8a63070e9f7d0c62eb9d9fcb360a7de382448200fbbd1b106cc96d3d8099df8d", [:rebar3], [{:unicode_util_compat, "~> 0.7.0", [hex: :unicode_util_compat, repo: "hexpm", optional: false]}], "hexpm", "92376eb7894412ed19ac475e4a86f7b413c1b9fbb5bd16dccd57934157944cea"},
   "jason": {:hex, :jason, "1.4.4", "b9226785a9aa77b6857ca22832cffa5d5011a667207eb2a0ad56adb5db443b8a", [:mix], [{:decimal, "~> 1.0 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: true]}], "hexpm", "c5eb0cab91f094599f94d55bc63409236a8ec69a21a67814529e8d5f6cc90b3b"},
+  "json_ld": {:hex, :json_ld, "0.3.9", "736633e9ec2e63ef0e671a68a6e10ba99009309c9031f1bd9a149777a91bac56", [:mix], [{:httpoison, "~> 1.6 or ~> 2.0", [hex: :httpoison, repo: "hexpm", optional: false]}, {:jason, "~> 1.2", [hex: :jason, repo: "hexpm", optional: false]}, {:rdf, "~> 1.0 or ~> 2.0", [hex: :rdf, repo: "hexpm", optional: false]}], "hexpm", "4d8a359f9c8a8544b97f9d538efed3202bb34e7fa1a4ee5e984859231cd892a5"},
   "jumper": {:hex, :jumper, "1.0.2", "68cdcd84472a00ac596b4e6459a41b3062d4427cbd4f1e8c8793c5b54f1406a7", [:mix], [], "hexpm", "9b7782409021e01ab3c08270e26f36eb62976a38c1aa64b2eaf6348422f165e1"},
   "metrics": {:hex, :metrics, "1.0.1", "25f094dea2cda98213cecc3aeff09e940299d950904393b2a29d191c346a8486", [:rebar3], [], "hexpm", "69b09adddc4f74a40716ae54d140f93beb0fb8978d8636eaded0c31b6f099f16"},
   "mime": {:hex, :mime, "2.0.6", "8f18486773d9b15f95f4f4f1e39b710045fa1de891fada4516559967276e4dc2", [:mix], [], "hexpm", "c9945363a6b26d747389aac3643f8e0e09d30499a138ad64fe8fd1d13d9b153e"},
@@ -35,6 +37,8 @@
   "plug": {:hex, :plug, "1.16.1", "40c74619c12f82736d2214557dedec2e9762029b2438d6d175c5074c933edc9d", [:mix], [{:mime, "~> 1.0 or ~> 2.0", [hex: :mime, repo: "hexpm", optional: false]}, {:plug_crypto, "~> 1.1.1 or ~> 1.2 or ~> 2.0", [hex: :plug_crypto, repo: "hexpm", optional: false]}, {:telemetry, "~> 0.4.3 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "a13ff6b9006b03d7e33874945b2755253841b238c34071ed85b0e86057f8cddc"},
   "plug_crypto": {:hex, :plug_crypto, "2.1.0", "f44309c2b06d249c27c8d3f65cfe08158ade08418cf540fd4f72d4d6863abb7b", [:mix], [], "hexpm", "131216a4b030b8f8ce0f26038bc4421ae60e4bb95c5cf5395e1421437824c4fa"},
   "poison": {:hex, :poison, "6.0.0", "9bbe86722355e36ffb62c51a552719534257ba53f3271dacd20fbbd6621a583a", [:mix], [{:decimal, "~> 2.1", [hex: :decimal, repo: "hexpm", optional: true]}], "hexpm", "bb9064632b94775a3964642d6a78281c07b7be1319e0016e1643790704e739a2"},
+  "protocol_ex": {:hex, :protocol_ex, "0.4.4", "c9717d1c0bdabe37d7653965dc02e78580d0d06a1f86d737b7941b55241f70d6", [:mix], [], "hexpm", "2b78ed0e5ec76f62b0debaf92dc8e795551cdaf7fc22b8816b3d57225020ac99"},
+  "rdf": {:hex, :rdf, "2.0.0", "726142743c4fdee09c4b38a6df5ae73de4a7698c382119eb855ca357a0a0d5e3", [:mix], [{:decimal, "~> 1.5 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: false]}, {:protocol_ex, "~> 0.4.4", [hex: :protocol_ex, repo: "hexpm", optional: false]}, {:uniq, "~> 0.6", [hex: :uniq, repo: "hexpm", optional: false]}], "hexpm", "13396267e35f7402feb70d122d15e444bcef630dff9c7ae787637f10a8ea1003"},
   "req": {:hex, :req, "0.5.6", "8fe1eead4a085510fe3d51ad854ca8f20a622aae46e97b302f499dfb84f726ac", [:mix], [{:brotli, "~> 0.3.1", [hex: :brotli, repo: "hexpm", optional: true]}, {:ezstd, "~> 1.0", [hex: :ezstd, repo: "hexpm", optional: true]}, {:finch, "~> 0.17", [hex: :finch, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}, {:mime, "~> 2.0.6 or ~> 2.1", [hex: :mime, repo: "hexpm", optional: false]}, {:nimble_csv, "~> 1.0", [hex: :nimble_csv, repo: "hexpm", optional: true]}, {:plug, "~> 1.0", [hex: :plug, repo: "hexpm", optional: true]}], "hexpm", "cfaa8e720945d46654853de39d368f40362c2641c4b2153c886418914b372185"},
   "secure_compare": {:hex, :secure_compare, "0.1.0", "01b3c93c8edb696e8a5b38397ed48e10958c8a5ec740606656445bcbec0aadb8", [:mix], [], "hexpm", "6391a49eb4a6182f0d7425842fc774bbed715e78b2bfb0c83b99c94e02c78b5c"},
   "sleeplocks": {:hex, :sleeplocks, "1.1.3", "96a86460cc33b435c7310dbd27ec82ca2c1f24ae38e34f8edde97f756503441a", [:rebar3], [], "hexpm", "d3b3958552e6eb16f463921e70ae7c767519ef8f5be46d7696cc1ed649421321"},
@@ -44,6 +48,7 @@
   "timex": {:hex, :timex, "3.7.11", "bb95cb4eb1d06e27346325de506bcc6c30f9c6dea40d1ebe390b262fad1862d1", [:mix], [{:combine, "~> 0.10", [hex: :combine, repo: "hexpm", optional: false]}, {:gettext, "~> 0.20", [hex: :gettext, repo: "hexpm", optional: false]}, {:tzdata, "~> 1.1", [hex: :tzdata, repo: "hexpm", optional: false]}], "hexpm", "8b9024f7efbabaf9bd7aa04f65cf8dcd7c9818ca5737677c7b76acbc6a94d1aa"},
   "tzdata": {:hex, :tzdata, "1.1.1", "20c8043476dfda8504952d00adac41c6eda23912278add38edc140ae0c5bcc46", [:mix], [{:hackney, "~> 1.17", [hex: :hackney, repo: "hexpm", optional: false]}], "hexpm", "a69cec8352eafcd2e198dea28a34113b60fdc6cb57eb5ad65c10292a6ba89787"},
   "unicode_util_compat": {:hex, :unicode_util_compat, "0.7.0", "bc84380c9ab48177092f43ac89e4dfa2c6d62b40b8bd132b1059ecc7232f9a78", [:rebar3], [], "hexpm", "25eee6d67df61960cf6a794239566599b09e17e668d3700247bc498638152521"},
+  "uniq": {:hex, :uniq, "0.6.1", "369660ecbc19051be526df3aa85dc393af5f61f45209bce2fa6d7adb051ae03c", [:mix], [{:ecto, "~> 3.0", [hex: :ecto, repo: "hexpm", optional: true]}], "hexpm", "6426c34d677054b3056947125b22e0daafd10367b85f349e24ac60f44effb916"},
   "unsafe": {:hex, :unsafe, "1.0.2", "23c6be12f6c1605364801f4b47007c0c159497d0446ad378b5cf05f1855c0581", [:mix], [], "hexpm", "b485231683c3ab01a9cd44cb4a79f152c6f3bb87358439c6f68791b85c2df675"},
   "websock": {:hex, :websock, "0.5.3", "2f69a6ebe810328555b6fe5c831a851f485e303a7c8ce6c5f675abeb20ebdadc", [:mix], [], "hexpm", "6105453d7fac22c712ad66fab1d45abdf049868f253cf719b625151460b8b453"},
 }

priv/jsonld/activitystreams.json

@@ -0,0 +1,379 @@
+{
+  "@context": {
+    "@vocab": "_:",
+    "xsd": "http://www.w3.org/2001/XMLSchema#",
+    "as": "https://www.w3.org/ns/activitystreams#",
+    "ldp": "http://www.w3.org/ns/ldp#",
+    "vcard": "http://www.w3.org/2006/vcard/ns#",
+    "id": "@id",
+    "type": "@type",
+    "Accept": "as:Accept",
+    "Activity": "as:Activity",
+    "IntransitiveActivity": "as:IntransitiveActivity",
+    "Add": "as:Add",
+    "Announce": "as:Announce",
+    "Application": "as:Application",
+    "Arrive": "as:Arrive",
+    "Article": "as:Article",
+    "Audio": "as:Audio",
+    "Block": "as:Block",
+    "Collection": "as:Collection",
+    "CollectionPage": "as:CollectionPage",
+    "Relationship": "as:Relationship",
+    "Create": "as:Create",
+    "Delete": "as:Delete",
+    "Dislike": "as:Dislike",
+    "Document": "as:Document",
+    "Event": "as:Event",
+    "Follow": "as:Follow",
+    "Flag": "as:Flag",
+    "Group": "as:Group",
+    "Ignore": "as:Ignore",
+    "Image": "as:Image",
+    "Invite": "as:Invite",
+    "Join": "as:Join",
+    "Leave": "as:Leave",
+    "Like": "as:Like",
+    "Link": "as:Link",
+    "Mention": "as:Mention",
+    "Note": "as:Note",
+    "Object": "as:Object",
+    "Offer": "as:Offer",
+    "OrderedCollection": "as:OrderedCollection",
+    "OrderedCollectionPage": "as:OrderedCollectionPage",
+    "Organization": "as:Organization",
+    "Page": "as:Page",
+    "Person": "as:Person",
+    "Place": "as:Place",
+    "Profile": "as:Profile",
+    "Question": "as:Question",
+    "Reject": "as:Reject",
+    "Remove": "as:Remove",
+    "Service": "as:Service",
+    "TentativeAccept": "as:TentativeAccept",
+    "TentativeReject": "as:TentativeReject",
+    "Tombstone": "as:Tombstone",
+    "Undo": "as:Undo",
+    "Update": "as:Update",
+    "Video": "as:Video",
+    "View": "as:View",
+    "Listen": "as:Listen",
+    "Read": "as:Read",
+    "Move": "as:Move",
+    "Travel": "as:Travel",
+    "IsFollowing": "as:IsFollowing",
+    "IsFollowedBy": "as:IsFollowedBy",
+    "IsContact": "as:IsContact",
+    "IsMember": "as:IsMember",
+    "subject": {
+      "@id": "as:subject",
+      "@type": "@id"
+    },
+    "relationship": {
+      "@id": "as:relationship",
+      "@type": "@id"
+    },
+    "actor": {
+      "@id": "as:actor",
+      "@type": "@id"
+    },
+    "attributedTo": {
+      "@id": "as:attributedTo",
+      "@type": "@id"
+    },
+    "attachment": {
+      "@id": "as:attachment",
+      "@type": "@id"
+    },
+    "bcc": {
+      "@id": "as:bcc",
+      "@type": "@id"
+    },
+    "bto": {
+      "@id": "as:bto",
+      "@type": "@id"
+    },
+    "cc": {
+      "@id": "as:cc",
+      "@type": "@id"
+    },
+    "context": {
+      "@id": "as:context",
+      "@type": "@id"
+    },
+    "current": {
+      "@id": "as:current",
+      "@type": "@id"
+    },
+    "first": {
+      "@id": "as:first",
+      "@type": "@id"
+    },
+    "generator": {
+      "@id": "as:generator",
+      "@type": "@id"
+    },
+    "icon": {
+      "@id": "as:icon",
+      "@type": "@id"
+    },
+    "image": {
+      "@id": "as:image",
+      "@type": "@id"
+    },
+    "inReplyTo": {
+      "@id": "as:inReplyTo",
+      "@type": "@id"
+    },
+    "items": {
+      "@id": "as:items",
+      "@type": "@id"
+    },
+    "instrument": {
+      "@id": "as:instrument",
+      "@type": "@id"
+    },
+    "orderedItems": {
+      "@id": "as:items",
+      "@type": "@id",
+      "@container": "@list"
+    },
+    "last": {
+      "@id": "as:last",
+      "@type": "@id"
+    },
+    "location": {
+      "@id": "as:location",
+      "@type": "@id"
+    },
+    "next": {
+      "@id": "as:next",
+      "@type": "@id"
+    },
+    "object": {
+      "@id": "as:object",
+      "@type": "@id"
+    },
+    "oneOf": {
+      "@id": "as:oneOf",
+      "@type": "@id"
+    },
+    "anyOf": {
+      "@id": "as:anyOf",
+      "@type": "@id"
+    },
+    "closed": {
+      "@id": "as:closed",
+      "@type": "xsd:dateTime"
+    },
+    "origin": {
+      "@id": "as:origin",
+      "@type": "@id"
+    },
+    "accuracy": {
+      "@id": "as:accuracy",
+      "@type": "xsd:float"
+    },
+    "prev": {
+      "@id": "as:prev",
+      "@type": "@id"
+    },
+    "preview": {
+      "@id": "as:preview",
+      "@type": "@id"
+    },
+    "replies": {
+      "@id": "as:replies",
+      "@type": "@id"
+    },
+    "result": {
+      "@id": "as:result",
+      "@type": "@id"
+    },
+    "audience": {
+      "@id": "as:audience",
+      "@type": "@id"
+    },
+    "partOf": {
+      "@id": "as:partOf",
+      "@type": "@id"
+    },
+    "tag": {
+      "@id": "as:tag",
+      "@type": "@id"
+    },
+    "target": {
+      "@id": "as:target",
+      "@type": "@id"
+    },
+    "to": {
+      "@id": "as:to",
+      "@type": "@id"
+    },
+    "url": {
+      "@id": "as:url",
+      "@type": "@id"
+    },
+    "altitude": {
+      "@id": "as:altitude",
+      "@type": "xsd:float"
+    },
+    "content": "as:content",
+    "contentMap": {
+      "@id": "as:content",
+      "@container": "@language"
+    },
+    "name": "as:name",
+    "nameMap": {
+      "@id": "as:name",
+      "@container": "@language"
+    },
+    "duration": {
+      "@id": "as:duration",
+      "@type": "xsd:duration"
+    },
+    "endTime": {
+      "@id": "as:endTime",
+      "@type": "xsd:dateTime"
+    },
+    "height": {
+      "@id": "as:height",
+      "@type": "xsd:nonNegativeInteger"
+    },
+    "href": {
+      "@id": "as:href",
+      "@type": "@id"
+    },
+    "hreflang": "as:hreflang",
+    "latitude": {
+      "@id": "as:latitude",
+      "@type": "xsd:float"
+    },
+    "longitude": {
+      "@id": "as:longitude",
+      "@type": "xsd:float"
+    },
+    "mediaType": "as:mediaType",
+    "published": {
+      "@id": "as:published",
+      "@type": "xsd:dateTime"
+    },
+    "radius": {
+      "@id": "as:radius",
+      "@type": "xsd:float"
+    },
+    "rel": "as:rel",
+    "startIndex": {
+      "@id": "as:startIndex",
+      "@type": "xsd:nonNegativeInteger"
+    },
+    "startTime": {
+      "@id": "as:startTime",
+      "@type": "xsd:dateTime"
+    },
+    "summary": "as:summary",
+    "summaryMap": {
+      "@id": "as:summary",
+      "@container": "@language"
+    },
+    "totalItems": {
+      "@id": "as:totalItems",
+      "@type": "xsd:nonNegativeInteger"
+    },
+    "units": "as:units",
+    "updated": {
+      "@id": "as:updated",
+      "@type": "xsd:dateTime"
+    },
+    "width": {
+      "@id": "as:width",
+      "@type": "xsd:nonNegativeInteger"
+    },
+    "describes": {
+      "@id": "as:describes",
+      "@type": "@id"
+    },
+    "formerType": {
+      "@id": "as:formerType",
+      "@type": "@id"
+    },
+    "deleted": {
+      "@id": "as:deleted",
+      "@type": "xsd:dateTime"
+    },
+    "inbox": {
+      "@id": "ldp:inbox",
+      "@type": "@id"
+    },
+    "outbox": {
+      "@id": "as:outbox",
+      "@type": "@id"
+    },
+    "following": {
+      "@id": "as:following",
+      "@type": "@id"
+    },
+    "followers": {
+      "@id": "as:followers",
+      "@type": "@id"
+    },
+    "streams": {
+      "@id": "as:streams",
+      "@type": "@id"
+    },
+    "preferredUsername": "as:preferredUsername",
+    "endpoints": {
+      "@id": "as:endpoints",
+      "@type": "@id"
+    },
+    "uploadMedia": {
+      "@id": "as:uploadMedia",
+      "@type": "@id"
+    },
+    "proxyUrl": {
+      "@id": "as:proxyUrl",
+      "@type": "@id"
+    },
+    "liked": {
+      "@id": "as:liked",
+      "@type": "@id"
+    },
+    "oauthAuthorizationEndpoint": {
+      "@id": "as:oauthAuthorizationEndpoint",
+      "@type": "@id"
+    },
+    "oauthTokenEndpoint": {
+      "@id": "as:oauthTokenEndpoint",
+      "@type": "@id"
+    },
+    "provideClientKey": {
+      "@id": "as:provideClientKey",
+      "@type": "@id"
+    },
+    "signClientKey": {
+      "@id": "as:signClientKey",
+      "@type": "@id"
+    },
+    "sharedInbox": {
+      "@id": "as:sharedInbox",
+      "@type": "@id"
+    },
+    "Public": {
+      "@id": "as:Public",
+      "@type": "@id"
+    },
+    "source": "as:source",
+    "likes": {
+      "@id": "as:likes",
+      "@type": "@id"
+    },
+    "shares": {
+      "@id": "as:shares",
+      "@type": "@id"
+    },
+    "alsoKnownAs": {
+      "@id": "as:alsoKnownAs",
+      "@type": "@id"
+    }
+  }
+}