From 59804abc3d59070e56e0c541884a54fb88242eb2 Mon Sep 17 00:00:00 2001
From: alpaca-tc <alpaca-tc@alpaca.tc>
Date: Sat, 6 May 2017 23:31:07 +0900
Subject: [PATCH] Optimize MuteService and AfterBlockService (#2836)

---
 app/lib/feed_manager.rb                   |  8 ++++++
 app/services/after_block_service.rb       | 16 +-----------
 app/services/mute_service.rb              | 16 +-----------
 spec/services/after_block_service_spec.rb | 29 ++++++++++++++++++++
 spec/services/mute_service_spec.rb        | 32 ++++++++++++++++++++++-
 5 files changed, 70 insertions(+), 31 deletions(-)
 create mode 100644 spec/services/after_block_service_spec.rb

diff --git a/app/lib/feed_manager.rb b/app/lib/feed_manager.rb
index 339a5c78b..aaff9acd3 100644
--- a/app/lib/feed_manager.rb
+++ b/app/lib/feed_manager.rb
@@ -76,6 +76,14 @@ class FeedManager
     end
   end
 
+  def clear_from_timeline(account, target_account)
+    timeline_key = key(:home, account.id)
+    timeline_status_ids = redis.zrange(timeline_key, 0, -1)
+    target_status_ids = Status.where(id: timeline_status_ids, account: target_account).ids
+
+    redis.zrem(timeline_key, target_status_ids) if target_status_ids.present?
+  end
+
   private
 
   def redis
diff --git a/app/services/after_block_service.rb b/app/services/after_block_service.rb
index d1a846f21..a7dce08c7 100644
--- a/app/services/after_block_service.rb
+++ b/app/services/after_block_service.rb
@@ -2,30 +2,16 @@
 
 class AfterBlockService < BaseService
   def call(account, target_account)
-    clear_timelines(account, target_account)
+    FeedManager.instance.clear_from_timeline(account, target_account)
     clear_notifications(account, target_account)
   end
 
   private
 
-  def clear_timelines(account, target_account)
-    home_key = FeedManager.instance.key(:home, account.id)
-
-    redis.pipelined do
-      target_account.statuses.select('id').reorder(nil).find_each do |status|
-        redis.zrem(home_key, status.id)
-      end
-    end
-  end
-
   def clear_notifications(account, target_account)
     Notification.where(account: account).joins(:follow).where(activity_type: 'Follow', follows: { account_id: target_account.id }).delete_all
     Notification.where(account: account).joins(mention: :status).where(activity_type: 'Mention', statuses: { account_id: target_account.id }).delete_all
     Notification.where(account: account).joins(:favourite).where(activity_type: 'Favourite', favourites: { account_id: target_account.id }).delete_all
     Notification.where(account: account).joins(:status).where(activity_type: 'Status', statuses: { account_id: target_account.id }).delete_all
   end
-
-  def redis
-    Redis.current
-  end
 end
diff --git a/app/services/mute_service.rb b/app/services/mute_service.rb
index 1a650ed2a..92f92cc7d 100644
--- a/app/services/mute_service.rb
+++ b/app/services/mute_service.rb
@@ -3,21 +3,7 @@
 class MuteService < BaseService
   def call(account, target_account)
     return if account.id == target_account.id
-    clear_home_timeline(account, target_account)
+    FeedManager.instance.clear_from_timeline(account, target_account)
     account.mute!(target_account)
   end
-
-  private
-
-  def clear_home_timeline(account, target_account)
-    home_key = FeedManager.instance.key(:home, account.id)
-
-    target_account.statuses.select('id').reorder(nil).find_each do |status|
-      redis.zrem(home_key, status.id)
-    end
-  end
-
-  def redis
-    Redis.current
-  end
 end
diff --git a/spec/services/after_block_service_spec.rb b/spec/services/after_block_service_spec.rb
new file mode 100644
index 000000000..65f36c7d1
--- /dev/null
+++ b/spec/services/after_block_service_spec.rb
@@ -0,0 +1,29 @@
+require 'rails_helper'
+
+RSpec.describe AfterBlockService do
+  subject do
+    -> { described_class.new.call(account, target_account) }
+  end
+
+  let(:account) { Fabricate(:account) }
+  let(:target_account) { Fabricate(:account) }
+
+  describe 'home timeline' do
+    let(:status) { Fabricate(:status, account: target_account) }
+    let(:other_account_status) { Fabricate(:status) }
+    let(:home_timeline_key) { FeedManager.instance.key(:home, account.id) }
+
+    before do
+      Redis.current.del(home_timeline_key)
+    end
+
+    it "clears account's statuses" do
+      FeedManager.instance.push(:home, account, status)
+      FeedManager.instance.push(:home, account, other_account_status)
+
+      is_expected.to change {
+        Redis.current.zrange(home_timeline_key, 0, -1)
+      }.from([status.id.to_s, other_account_status.id.to_s]).to([other_account_status.id.to_s])
+    end
+  end
+end
diff --git a/spec/services/mute_service_spec.rb b/spec/services/mute_service_spec.rb
index 397368416..8097cb250 100644
--- a/spec/services/mute_service_spec.rb
+++ b/spec/services/mute_service_spec.rb
@@ -1,5 +1,35 @@
 require 'rails_helper'
 
 RSpec.describe MuteService do
-  subject { MuteService.new }
+  subject do
+    -> { described_class.new.call(account, target_account) }
+  end
+
+  let(:account) { Fabricate(:account) }
+  let(:target_account) { Fabricate(:account) }
+
+  describe 'home timeline' do
+    let(:status) { Fabricate(:status, account: target_account) }
+    let(:other_account_status) { Fabricate(:status) }
+    let(:home_timeline_key) { FeedManager.instance.key(:home, account.id) }
+
+    before do
+      Redis.current.del(home_timeline_key)
+    end
+
+    it "clears account's statuses" do
+      FeedManager.instance.push(:home, account, status)
+      FeedManager.instance.push(:home, account, other_account_status)
+
+      is_expected.to change {
+        Redis.current.zrange(home_timeline_key, 0, -1)
+      }.from([status.id.to_s, other_account_status.id.to_s]).to([other_account_status.id.to_s])
+    end
+  end
+
+  it 'mutes account' do
+    is_expected.to change {
+      account.muting?(target_account)
+    }.from(false).to(true)
+  end
 end