From cdd5ef691bcdb25f8c8367698de7e09301ee3528 Mon Sep 17 00:00:00 2001
From: Eugen Rochko <eugen@zeonfederated.com>
Date: Wed, 4 Oct 2017 00:39:32 +0200
Subject: [PATCH] Use separate workers to process imports, retry failures
 (#5207)

---
 app/workers/import/relationship_worker.rb | 25 ++++++++++
 app/workers/import_worker.rb              | 58 +++++------------------
 2 files changed, 38 insertions(+), 45 deletions(-)
 create mode 100644 app/workers/import/relationship_worker.rb

diff --git a/app/workers/import/relationship_worker.rb b/app/workers/import/relationship_worker.rb
new file mode 100644
index 0000000000..ed4c962c19
--- /dev/null
+++ b/app/workers/import/relationship_worker.rb
@@ -0,0 +1,25 @@
+# frozen_string_literal: true
+
+class Import::RelationshipWorker
+  include Sidekiq::Worker
+
+  sidekiq_options queue: 'pull', retry: 8, dead: false
+
+  def perform(account_id, target_account_uri, relationship)
+    from_account   = Account.find(account_id)
+    target_account = ResolveRemoteAccountService.new.call(target_account_uri)
+
+    return if target_account.nil?
+
+    case relationship
+    when 'follow'
+      FollowService.new.call(from_account, target_account.acct)
+    when 'block'
+      BlockService.new.call(from_account, target_account)
+    when 'mute'
+      MuteService.new.call(from_account, target_account)
+    end
+  rescue ActiveRecord::RecordNotFound
+    true
+  end
+end
diff --git a/app/workers/import_worker.rb b/app/workers/import_worker.rb
index 27cc6b365d..d7c126f75b 100644
--- a/app/workers/import_worker.rb
+++ b/app/workers/import_worker.rb
@@ -12,13 +12,8 @@ class ImportWorker
   def perform(import_id)
     @import = Import.find(import_id)
 
-    case @import.type
-    when 'blocking'
-      process_blocks
-    when 'following'
-      process_follows
-    when 'muting'
-      process_mutes
+    Import::RelationshipWorker.push_bulk(import_rows) do |row|
+      [@import.account_id, row.first, relationship_type]
     end
 
     @import.destroy
@@ -26,49 +21,22 @@ class ImportWorker
 
   private
 
-  def from_account
-    @import.account
-  end
-
   def import_contents
     Paperclip.io_adapters.for(@import.data).read
   end
 
+  def relationship_type
+    case @import.type
+    when 'following'
+      'follow'
+    when 'blocking'
+      'block'
+    when 'muting'
+      'mute'
+    end
+  end
+
   def import_rows
     CSV.new(import_contents).reject(&:blank?)
   end
-
-  def process_mutes
-    import_rows.each do |row|
-      begin
-        target_account = ResolveRemoteAccountService.new.call(row.first)
-        next if target_account.nil?
-        MuteService.new.call(from_account, target_account)
-      rescue Mastodon::UnexpectedResponseError, HTTP::Error, OpenSSL::SSL::SSLError
-        next
-      end
-    end
-  end
-
-  def process_blocks
-    import_rows.each do |row|
-      begin
-        target_account = ResolveRemoteAccountService.new.call(row.first)
-        next if target_account.nil?
-        BlockService.new.call(from_account, target_account)
-      rescue Mastodon::UnexpectedResponseError, HTTP::Error, OpenSSL::SSL::SSLError
-        next
-      end
-    end
-  end
-
-  def process_follows
-    import_rows.each do |row|
-      begin
-        FollowService.new.call(from_account, row.first)
-      rescue Mastodon::NotPermittedError, ActiveRecord::RecordNotFound, Mastodon::UnexpectedResponseError, HTTP::Error, OpenSSL::SSL::SSLError
-        next
-      end
-    end
-  end
 end