replace use of hackney in scraper with mint

config/dev.exs

@@ -65,7 +65,7 @@ config :philomena, PhilomenaWeb.Endpoint,
 
 # Do not include metadata nor timestamps in development logs
 config :logger, :console, format: "[$level] $message\n"
-config :logger, compile_time_purge_matching: [[application: :remote_ip]]
+config :logger, compile_time_purge_matching: [[application: :remote_ip], [application: :mint]]
 
 # Set up mailer
 config :philomena, PhilomenaWeb.Mailer, adapter: Bamboo.LocalAdapter

lib/philomena/http.ex

@@ -1,31 +1,38 @@
 defmodule Philomena.Http do
-  @user_agent [
-    "User-Agent":
-      "Mozilla/5.0 (X11; Philomena; Linux x86_64; rv:70.0) Gecko/20100101 Firefox/70.0"
-  ]
-
   def get!(url, headers \\ [], options \\ []) do
-    headers = Keyword.merge(@user_agent, headers) |> add_host(url)
-    options = Keyword.merge(options, proxy: proxy_host(), ssl: [insecure: true])
-
-    HTTPoison.get!(url, headers, options)
+    Tesla.get!(client(headers), url, opts: [adapter: adapter_opts(options)])
   end
 
   def head!(url, headers \\ [], options \\ []) do
-    headers = Keyword.merge(@user_agent, headers) |> add_host(url)
-    options = Keyword.merge(options, proxy: proxy_host(), ssl: [insecure: true])
-
-    HTTPoison.head!(url, headers, options)
+    Tesla.head!(client(headers), url, opts: [adapter: adapter_opts(options)])
   end
 
-  # Add host for caching proxies, since hackney doesn't do it for us
-  defp add_host(headers, url) do
-    %{host: host} = URI.parse(url)
+  defp adapter_opts(opts) do
+    opts = Keyword.merge(opts, max_body: 30_000_000)
 
-    Keyword.merge([Host: host, Connection: "close"], headers)
+    case Application.get_env(:philomena, :proxy_host) do
+      nil ->
+        opts
+
+      url ->
+        Keyword.merge(opts, proxy: proxy_opts(URI.parse(url)))
+    end
   end
 
-  defp proxy_host do
-    Application.get_env(:philomena, :proxy_host)
+  defp proxy_opts(%{host: host, port: port, scheme: "https"}), do: {:https, host, port, []}
+  defp proxy_opts(%{host: host, port: port, scheme: "http"}), do: {:http, host, port, []}
+
+  defp client(headers) do
+    Tesla.client(
+      [
+        {Tesla.Middleware.Headers,
+         [
+           {"User-Agent",
+            "Mozilla/5.0 (X11; Philomena; Linux x86_64; rv:70.0) Gecko/20100101 Firefox/76.0"}
+           | headers
+         ]}
+      ],
+      Tesla.Adapter.Mint
+    )
   end
 end

lib/philomena/scrapers/deviantart.ex

@@ -30,7 +30,7 @@ defmodule Philomena.Scrapers.Deviantart do
     |> try_old_hires!()
   end
 
-  defp extract_data!(%HTTPoison.Response{body: body, status_code: 200}) do
+  defp extract_data!(%Tesla.Env{body: body, status: 200}) do
     [image] = Regex.run(@image_regex, body, capture: :all_but_first)
     [source] = Regex.run(@source_regex, body, capture: :all_but_first)
     [artist] = Regex.run(@artist_regex, source, capture: :all_but_first)
@@ -48,15 +48,11 @@ defmodule Philomena.Scrapers.Deviantart do
   end
 
   defp try_intermediary_hires!(%{images: [image]} = data) do
-    [domain, object_uuid, object_name] =
-      Regex.run(@cdnint_regex, image.url, capture: :all_but_first)
-
-    built_url = "#{domain}/intermediary/f/#{object_uuid}/#{object_name}"
-
-    case Philomena.Http.head!(built_url) do
-      %HTTPoison.Response{status_code: 200} ->
+    with [domain, object_uuid, object_name] <-
+           Regex.run(@cdnint_regex, image.url, capture: :all_but_first),
+         built_url <- "#{domain}/intermediary/f/#{object_uuid}/#{object_name}",
+         %Tesla.Env{status: 200} <- Philomena.Http.head!(built_url) do
       # This is the high resolution URL.
-
       %{
         data
         | images: [
@@ -66,7 +62,7 @@ defmodule Philomena.Scrapers.Deviantart do
             }
           ]
       }
-
+    else
       _ ->
         # Nothing to be found here, move along...
         data
@@ -115,9 +111,9 @@ defmodule Philomena.Scrapers.Deviantart do
     built_url = "http://orig01.deviantart.net/x_by_x-d#{base36}.png"
 
     case Philomena.Http.get!(built_url) do
-      %HTTPoison.Response{status_code: 301, headers: headers} ->
+      %Tesla.Env{status: 301, headers: headers} ->
         # Location header provides URL of high res image.
-        {_location, link} = Enum.find(headers, fn {header, _val} -> header == "Location" end)
+        {_location, link} = Enum.find(headers, fn {header, _val} -> header == "location" end)
 
         %{
           data
@@ -140,7 +136,7 @@ defmodule Philomena.Scrapers.Deviantart do
 
   defp follow_redirect(url, max_times) do
     case Philomena.Http.get!(url) do
-      %HTTPoison.Response{headers: headers, status_code: code} when code in [301, 302] ->
+      %Tesla.Env{headers: headers, status: code} when code in [301, 302] ->
         location = Enum.find_value(headers, &location_header/1)
         follow_redirect(location, max_times - 1)
 

lib/philomena/scrapers/raw.ex

@@ -3,9 +3,9 @@ defmodule Philomena.Scrapers.Raw do
 
   @spec can_handle?(URI.t(), String.t()) :: true | false
   def can_handle?(_uri, url) do
-    Philomena.Http.head!(url, [], max_body_length: 30_000_000)
+    Philomena.Http.head!(url)
     |> case do
-      %HTTPoison.Response{status_code: 200, headers: headers} ->
+      %Tesla.Env{status: 200, headers: headers} ->
         headers
         |> Enum.any?(fn {k, v} ->
           String.downcase(k) == "content-type" and String.downcase(v) in @mime_types

lib/philomena/scrapers/tumblr.ex

@@ -31,7 +31,7 @@ defmodule Philomena.Scrapers.Tumblr do
     |> process_response!()
   end
 
-  defp json!(%HTTPoison.Response{body: body, status_code: 200}),
+  defp json!(%Tesla.Env{body: body, status: 200}),
     do: Jason.decode!(body)
 
   defp process_response!(%{"response" => %{"posts" => [post | _rest]}}),
@@ -70,7 +70,7 @@ defmodule Philomena.Scrapers.Tumblr do
   end
 
   defp url_ok?(url) do
-    match?(%HTTPoison.Response{status_code: 200}, Philomena.Http.head!(url))
+    match?(%Tesla.Env{status: 200}, Philomena.Http.head!(url))
   end
 
   defp add_meta(post, images) do

lib/philomena/scrapers/twitter.ex

@@ -50,7 +50,7 @@ defmodule Philomena.Scrapers.Twitter do
       |> Map.get(:body)
       |> extract_guest_token_and_bearer()
 
-    Philomena.Http.get!(api_url, Authorization: "Bearer #{bearer}", "x-guest-token": gt)
+    Philomena.Http.get!(api_url, [{"Authorization", "Bearer #{bearer}"}, {"x-guest-token", gt}])
     |> Map.get(:body)
     |> Jason.decode!()
     |> Map.get("globalObjects")

lib/philomena/servers/picarto_channel_updater.ex

@@ -28,7 +28,7 @@ defmodule Philomena.Servers.PicartoChannelUpdater do
     run()
   end
 
-  defp handle_response(%HTTPoison.Response{body: body, status_code: 200}, now) do
+  defp handle_response(%Tesla.Env{body: body, status: 200}, now) do
     resp =
       body
       |> Jason.decode!()

lib/philomena/servers/piczel_channel_updater.ex

@@ -28,7 +28,7 @@ defmodule Philomena.Servers.PiczelChannelUpdater do
     run()
   end
 
-  defp handle_response(%HTTPoison.Response{body: body, status_code: 200}, now) do
+  defp handle_response(%Tesla.Env{body: body, status: 200}, now) do
     resp =
       body
       |> Jason.decode!()

lib/philomena/servers/user_link_updater.ex

@@ -63,7 +63,7 @@ defmodule Philomena.Servers.UserLinkUpdater do
     |> handle_response(user_link)
   end
 
-  defp handle_response(%HTTPoison.Response{body: body, status_code: 200}, user_link) do
+  defp handle_response(%Tesla.Env{body: body, status: 200}, user_link) do
     case :binary.match(body, user_link.verification_code) do
       :nomatch ->
         nil

lib/philomena_web/plugs/compromised_password_check_plug.ex

@@ -32,8 +32,8 @@ defmodule PhilomenaWeb.CompromisedPasswordCheckPlug do
       :crypto.hash(:sha, password)
       |> Base.encode16()
 
-    case HTTPoison.get(make_api_url(prefix)) do
-      {:ok, %HTTPoison.Response{body: body, status_code: 200}} -> String.contains?(body, rest)
+    case Philomena.Http.get!(make_api_url(prefix)) do
+      %Tesla.Env{body: body, status: 200} -> String.contains?(body, rest)
       _ -> false
     end
   end

lib/philomena_web/plugs/scraper_plug.ex

@@ -10,7 +10,7 @@ defmodule PhilomenaWeb.ScraperPlug do
         conn
 
       %{"scraper_cache" => url} when not is_nil(url) ->
-        Philomena.Http.get!(url, [], max_body_length: 30_000_000)
+        Philomena.Http.get!(url)
         |> maybe_fixup_params(opts, conn)
 
       _ ->
@@ -18,7 +18,7 @@ defmodule PhilomenaWeb.ScraperPlug do
     end
   end
 
-  defp maybe_fixup_params(%HTTPoison.Response{body: body, status_code: 200}, opts, conn) do
+  defp maybe_fixup_params(%Tesla.Env{body: body, status: 200}, opts, conn) do
     params_name = Keyword.get(opts, :params_name, "image")
     params_key = Keyword.get(opts, :params_key, "image")
     file = Briefly.create!()