Fix single Redis connection being used across all threads (#18135)

* Fix single Redis connection being used across all Sidekiq threads

* Fix tests

spec/lib/feed_manager_spec.rb

@@ -195,11 +195,11 @@ RSpec.describe FeedManager do
       account = Fabricate(:account)
       status = Fabricate(:status)
       members = FeedManager::MAX_ITEMS.times.map { |count| [count, count] }
-      Redis.current.zadd("feed:home:#{account.id}", members)
+      redis.zadd("feed:home:#{account.id}", members)
 
       FeedManager.instance.push_to_home(account, status)
 
-      expect(Redis.current.zcard("feed:home:#{account.id}")).to eq FeedManager::MAX_ITEMS
+      expect(redis.zcard("feed:home:#{account.id}")).to eq FeedManager::MAX_ITEMS
     end
 
     context 'reblogs' do
@@ -424,7 +424,7 @@ RSpec.describe FeedManager do
 
       FeedManager.instance.merge_into_home(account, reblog.account)
 
-      expect(Redis.current.zscore("feed:home:0", reblog.id)).to eq nil
+      expect(redis.zscore("feed:home:0", reblog.id)).to eq nil
     end
   end
 
@@ -440,13 +440,13 @@ RSpec.describe FeedManager do
       FeedManager.instance.push_to_home(receiver, status)
 
       # The reblogging status should show up under normal conditions.
-      expect(Redis.current.zrange("feed:home:#{receiver.id}", 0, -1)).to include(status.id.to_s)
+      expect(redis.zrange("feed:home:#{receiver.id}", 0, -1)).to include(status.id.to_s)
 
       FeedManager.instance.unpush_from_home(receiver, status)
 
       # Restore original status
-      expect(Redis.current.zrange("feed:home:#{receiver.id}", 0, -1)).to_not include(status.id.to_s)
-      expect(Redis.current.zrange("feed:home:#{receiver.id}", 0, -1)).to include(reblogged.id.to_s)
+      expect(redis.zrange("feed:home:#{receiver.id}", 0, -1)).to_not include(status.id.to_s)
+      expect(redis.zrange("feed:home:#{receiver.id}", 0, -1)).to include(reblogged.id.to_s)
     end
 
     it 'removes a reblogged status if it was only reblogged once' do
@@ -456,11 +456,11 @@ RSpec.describe FeedManager do
       FeedManager.instance.push_to_home(receiver, status)
 
       # The reblogging status should show up under normal conditions.
-      expect(Redis.current.zrange("feed:home:#{receiver.id}", 0, -1)).to eq [status.id.to_s]
+      expect(redis.zrange("feed:home:#{receiver.id}", 0, -1)).to eq [status.id.to_s]
 
       FeedManager.instance.unpush_from_home(receiver, status)
 
-      expect(Redis.current.zrange("feed:home:#{receiver.id}", 0, -1)).to be_empty
+      expect(redis.zrange("feed:home:#{receiver.id}", 0, -1)).to be_empty
     end
 
     it 'leaves a multiply-reblogged status if another reblog was in feed' do
@@ -472,13 +472,13 @@ RSpec.describe FeedManager do
       end
 
       # The reblogging status should show up under normal conditions.
-      expect(Redis.current.zrange("feed:home:#{receiver.id}", 0, -1)).to eq [reblogs.first.id.to_s]
+      expect(redis.zrange("feed:home:#{receiver.id}", 0, -1)).to eq [reblogs.first.id.to_s]
 
       reblogs[0...-1].each do |reblog|
         FeedManager.instance.unpush_from_home(receiver, reblog)
       end
 
-      expect(Redis.current.zrange("feed:home:#{receiver.id}", 0, -1)).to eq [reblogs.last.id.to_s]
+      expect(redis.zrange("feed:home:#{receiver.id}", 0, -1)).to eq [reblogs.last.id.to_s]
     end
 
     it 'sends push updates' do
@@ -486,11 +486,11 @@ RSpec.describe FeedManager do
 
       FeedManager.instance.push_to_home(receiver, status)
 
-      allow(Redis.current).to receive_messages(publish: nil)
+      allow(redis).to receive_messages(publish: nil)
       FeedManager.instance.unpush_from_home(receiver, status)
 
       deletion = Oj.dump(event: :delete, payload: status.id.to_s)
-      expect(Redis.current).to have_received(:publish).with("timeline:#{receiver.id}", deletion)
+      expect(redis).to have_received(:publish).with("timeline:#{receiver.id}", deletion)
     end
   end
 
@@ -508,14 +508,14 @@ RSpec.describe FeedManager do
 
     before do
       [status_1, status_3, status_5, status_6, status_7].each do |status|
-        Redis.current.zadd("feed:home:#{account.id}", status.id, status.id)
+        redis.zadd("feed:home:#{account.id}", status.id, status.id)
       end
     end
 
     it 'correctly cleans the home timeline' do
       FeedManager.instance.clear_from_home(account, target_account)
 
-      expect(Redis.current.zrange("feed:home:#{account.id}", 0, -1)).to eq [status_1.id.to_s, status_7.id.to_s]
+      expect(redis.zrange("feed:home:#{account.id}", 0, -1)).to eq [status_1.id.to_s, status_7.id.to_s]
     end
   end
 end