Apply suggestions from code review

Co-authored-by: Andrey Novikov <[email protected]>

lib/graphql-anycable.rb

@@ -20,6 +20,11 @@ def stats(**opts)
         Stats.new(**opts).collect
       end
 
+      def redis
+        warn "Usage of `GraphQL::AnyCable.redis` is deprecated. Instead of `GraphQL::AnyCable.redis.whatever` use `GraphQL::AnyCable.with_redis { |redis| redis.whatever }`"
+        @redis ||= with_redis { |conn| conn }
+      end
+
       def redis=(connector)
         @redis_connector = if connector.is_a?(::Proc)
           connector
@@ -30,7 +35,7 @@ def redis=(connector)
 
       def with_redis(&block)
         @redis_connector || default_redis_connector
-        @redis_connector.call { |conn| block.call(conn) }
+        @redis_connector.call(&block)
       end
 
       def config

lib/graphql/subscriptions/anycable_subscriptions.rb

@@ -194,7 +194,7 @@ def delete_channel_subscriptions(channel)
 
       private
 
-      def delete_subscription(redis, subscription_id)
+      def delete_subscription(subscription_id, redis: with_redis { |conn| conn }))
         events = redis.hget(redis_key(SUBSCRIPTION_PREFIX) + subscription_id, :events)
         events = events ? JSON.parse(events) : {}
         fingerprint_subscriptions = {}

spec/graphql/anycable_spec.rb

@@ -122,7 +122,7 @@
         )
       end
 
-      let(:redis) { AnycableSchema.subscriptions.with_redis { _1 } }
+      let(:redis) { $redis }
 
       subject do
         AnycableSchema.subscriptions.delete_channel_subscriptions(channel)

spec/redis_helper.rb

@@ -10,6 +10,6 @@
 
 RSpec.configure do |config|
   config.before do
-    GraphQL::AnyCable.with_redis { _1.flushdb }
+    GraphQL::AnyCable.with_redis(&:flushdb)
   end
 end