* Use ActiveRecord::Result#to_ary instead of deprecated to_hash They do the same thing, and to_hash has been removed from Rails 6.1 * Explicitly name polymorphic indexes to workaround a bug in Rails 6.1 cf. https://github.com/rails/rails/issues/41693 * Fix incorrect usage of “foreign_key” in migration script * Use `ActiveModel::Errors#delete` instead of deprecated clear method * Fix link headers tests on Rails 6.1 Rails 6.1 adds values to the Link header by default, thus it is not a LinkHeader object anymore. Fix the test to parse the Link header instead of assuming it is a LinkHeader.
		
			
				
	
	
		
			120 lines
		
	
	
		
			3.3 KiB
		
	
	
	
		
			Ruby
		
	
	
	
	
	
			
		
		
	
	
			120 lines
		
	
	
		
			3.3 KiB
		
	
	
	
		
			Ruby
		
	
	
	
	
	
class MigrateAccountConversations < ActiveRecord::Migration[5.2]
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  disable_ddl_transaction!
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  class Mention < ApplicationRecord
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    belongs_to :account, inverse_of: :mentions
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    belongs_to :status, -> { unscope(where: :deleted_at) }
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    delegate(
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      :username,
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      :acct,
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      to: :account,
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      prefix: true
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    )
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  end
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  class Notification < ApplicationRecord
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    belongs_to :account, optional: true
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    belongs_to :activity, polymorphic: true, optional: true
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    belongs_to :status,  foreign_key: 'activity_id', optional: true
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    belongs_to :mention, foreign_key: 'activity_id', optional: true
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    def target_status
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      mention&.status
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    end
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  end
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  class AccountConversation < ApplicationRecord
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    belongs_to :account
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    belongs_to :conversation
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    belongs_to :last_status, -> { unscope(where: :deleted_at) }, class_name: 'Status'
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    before_validation :set_last_status
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    class << self
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      def add_status(recipient, status)
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        conversation = find_or_initialize_by(account: recipient, conversation_id: status.conversation_id, participant_account_ids: participants_from_status(recipient, status))
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        return conversation if conversation.status_ids.include?(status.id)
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        conversation.status_ids << status.id
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        conversation.unread = status.account_id != recipient.id
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        conversation.save
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        conversation
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      rescue ActiveRecord::StaleObjectError
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        retry
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      end
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      private
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      def participants_from_status(recipient, status)
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        ((status.active_mentions.pluck(:account_id) + [status.account_id]).uniq - [recipient.id]).sort
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      end
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    end
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    private
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    def set_last_status
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      self.status_ids     = status_ids.sort
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      self.last_status_id = status_ids.last
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    end
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  end
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  def up
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    if $stdout.isatty
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      say ''
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      say 'WARNING: This migration may take a *long* time for large instances'
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      say 'It will *not* lock tables for any significant time, but it may run'
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      say 'for a very long time. We will pause for 10 seconds to allow you to'
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      say 'interrupt this migration if you are not ready.'
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      say ''
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      10.downto(1) do |i|
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        say "Continuing in #{i} second#{i == 1 ? '' : 's'}...", true
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        sleep 1
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      end
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    end
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    migrated  = 0
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    last_time = Time.zone.now
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    local_direct_statuses.includes(:account, mentions: :account).find_each do |status|
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      AccountConversation.add_status(status.account, status)
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      migrated += 1
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      if Time.zone.now - last_time > 1
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        say_progress(migrated)
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        last_time = Time.zone.now
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      end
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    end
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    notifications_about_direct_statuses.includes(:account, mention: { status: [:account, mentions: :account] }).find_each do |notification|
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      AccountConversation.add_status(notification.account, notification.target_status)
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      migrated += 1
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      if Time.zone.now - last_time > 1
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        say_progress(migrated)
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        last_time = Time.zone.now
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      end
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    end
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  end
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  def down
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  end
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  private
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  def say_progress(migrated)
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    say "Migrated #{migrated} rows", true
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  end
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  def local_direct_statuses
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    Status.unscoped.local.where(visibility: :direct)
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  end
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  def notifications_about_direct_statuses
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    Notification.joins('INNER JOIN mentions ON mentions.id = notifications.activity_id INNER JOIN statuses ON statuses.id = mentions.status_id').where(activity_type: 'Mention', statuses: { visibility: :direct })
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  end
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end
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