Merge remote-tracking branch 'origin/develop' into matrixmatrix

1 files changed, 0 insertions, 136 deletions

diff --git a/lib/pleroma/plugs/cache.ex b/lib/pleroma/plugs/cache.ex
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--- a/lib/pleroma/plugs/cache.ex
+++ /dev/null
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-# Pleroma: A lightweight social networking server
-# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
-# SPDX-License-Identifier: AGPL-3.0-only
-
-defmodule Pleroma.Plugs.Cache do
-  @moduledoc """
-  Caches successful GET responses.
-
-  To enable the cache add the plug to a router pipeline or controller:
-
-      plug(Pleroma.Plugs.Cache)
-
-  ## Configuration
-
-  To configure the plug you need to pass settings as the second argument to the `plug/2` macro:
-
-      plug(Pleroma.Plugs.Cache, [ttl: nil, query_params: true])
-
-  Available options:
-
-  - `ttl`:  An expiration time (time-to-live). This value should be in milliseconds or `nil` to disable expiration. Defaults to `nil`.
-  - `query_params`: Take URL query string into account (`true`), ignore it (`false`) or limit to specific params only (list). Defaults to `true`.
-  - `tracking_fun`: A function that is called on successfull responses, no matter if the request is cached or not. It should accept a conn as the first argument and the value assigned to `tracking_fun_data` as the second.
-
-  Additionally, you can overwrite the TTL inside a controller action by assigning `cache_ttl` to the connection struct:
-
-      def index(conn, _params) do
-        ttl = 60_000 # one minute
-
-        conn
-        |> assign(:cache_ttl, ttl)
-        |> render("index.html")
-      end
-
-  """
-
-  import Phoenix.Controller, only: [current_path: 1, json: 2]
-  import Plug.Conn
-
-  @behaviour Plug
-
-  @defaults %{ttl: nil, query_params: true}
-
-  @impl true
-  def init([]), do: @defaults
-
-  def init(opts) do
-    opts = Map.new(opts)
-    Map.merge(@defaults, opts)
-  end
-
-  @impl true
-  def call(%{method: "GET"} = conn, opts) do
-    key = cache_key(conn, opts)
-
-    case Cachex.get(:web_resp_cache, key) do
-      {:ok, nil} ->
-        cache_resp(conn, opts)
-
-      {:ok, {content_type, body, tracking_fun_data}} ->
-        conn = opts.tracking_fun.(conn, tracking_fun_data)
-
-        send_cached(conn, {content_type, body})
-
-      {:ok, record} ->
-        send_cached(conn, record)
-
-      {atom, message} when atom in [:ignore, :error] ->
-        render_error(conn, message)
-    end
-  end
-
-  def call(conn, _), do: conn
-
-  # full path including query params
-  defp cache_key(conn, %{query_params: true}), do: current_path(conn)
-
-  # request path without query params
-  defp cache_key(conn, %{query_params: false}), do: conn.request_path
-
-  # request path with specific query params
-  defp cache_key(conn, %{query_params: query_params}) when is_list(query_params) do
-    query_string =
-      conn.params
-      |> Map.take(query_params)
-      |> URI.encode_query()
-
-    conn.request_path <> "?" <> query_string
-  end
-
-  defp cache_resp(conn, opts) do
-    register_before_send(conn, fn
-      %{status: 200, resp_body: body} = conn ->
-        ttl = Map.get(conn.assigns, :cache_ttl, opts.ttl)
-        key = cache_key(conn, opts)
-        content_type = content_type(conn)
-
-        conn =
-          unless opts[:tracking_fun] do
-            Cachex.put(:web_resp_cache, key, {content_type, body}, ttl: ttl)
-            conn
-          else
-            tracking_fun_data = Map.get(conn.assigns, :tracking_fun_data, nil)
-            Cachex.put(:web_resp_cache, key, {content_type, body, tracking_fun_data}, ttl: ttl)
-
-            opts.tracking_fun.(conn, tracking_fun_data)
-          end
-
-        put_resp_header(conn, "x-cache", "MISS from Pleroma")
-
-      conn ->
-        conn
-    end)
-  end
-
-  defp content_type(conn) do
-    conn
-    |> Plug.Conn.get_resp_header("content-type")
-    |> hd()
-  end
-
-  defp send_cached(conn, {content_type, body}) do
-    conn
-    |> put_resp_content_type(content_type, nil)
-    |> put_resp_header("x-cache", "HIT from Pleroma")
-    |> send_resp(:ok, body)
-    |> halt()
-  end
-
-  defp render_error(conn, message) do
-    conn
-    |> put_status(:internal_server_error)
-    |> json(%{error: message})
-    |> halt()
-  end
-end