Add custom error for Instagram 429 errors.. In the week, I have start…

…ed seeing tens of thousands of these errors per day. There is obviously a moron abusing the service right now. I will start blocking IPs real soon.

app/instagram.rb

@@ -1,6 +1,7 @@
 # frozen_string_literal: true
 
 class InstagramError < HTTPError; end
+class InstagramRatelimitError < HTTPError; end
 class InstagramTokenError < InstagramError; end
 
 class Instagram < HTTP
@@ -29,6 +30,9 @@ def self.get(url, options={headers: {}}, tokens={csrftoken: nil})
     if response.code == 403
       raise(InstagramTokenError, response)
     end
+    if response.code == 429
+      raise(InstagramRatelimitError)
+    end
     response
   end
 
@@ -62,3 +66,8 @@ def self.get_post(id, opts={}, tokens={})
   status 503
   "There was a problem talking to Instagram. Please try again in a moment."
 end
+
+error InstagramRatelimitError do |e|
+  status 429
+  "There are too many requests going to Instagram right now. Someone is probably abusing this service. PLEASE SLOW DOWN!"
+end

lib/http.rb

@@ -109,7 +109,7 @@ def redirect_same_origin?
 end
 
 class HTTPError < StandardError
-  def initialize(obj)
+  def initialize(obj=nil)
     @obj = obj
   end