#581 Revert counter decrement when RateLimit request fails

.rubocop.yml

@@ -100,6 +100,7 @@ Elegant/GoodMethodName:
     - total_issues_created
     - total_releases_published
     - track_request
+    - untrack_request
     - unmask_repos
     - update_organization_membership
     - user_name_by_id

lib/fbe/middleware/rate_limit.rb

@@ -50,6 +50,9 @@ def call(env)
         @lock.synchronize { sync(response_env, env.url.path) }
       end
     end
+  rescue StandardError
+    @lock.synchronize { untrack_request(env.url.path) } unless env.url.path == '/rate_limit'
+    raise
   end
 
   # Returns the remaining requests count tracked by this middleware.
@@ -91,6 +94,17 @@ def track_request(path = nil)
     end
   end
 
+  # Reverts the counter decrement when the request fails.
+  def untrack_request(path = nil)
+    return unless @counter&.positive?
+    @counter -= 1
+    if path&.start_with?('/search/')
+      @searchleft += 1 if @searchleft&.positive?
+    elsif @remaining&.positive?
+      @remaining += 1
+    end
+  end
+
   # Syncs the internal remaining count from a real API response header.
   #
   # When the response was served by Faraday::HttpCache from cache