discourse/app/models/backup.rb

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class Backup
include ActiveModel::SerializerSupport
attr_reader :filename
attr_accessor :size, :path, :link
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def initialize(filename)
@filename = filename
end
def self.all
Dir.glob(File.join(Backup.base_directory, "*.{gz,tgz}"))
.sort_by { |file| File.mtime(file) }
.reverse
.map { |backup| Backup.create_from_filename(File.basename(backup)) }
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end
def self.[](filename)
path = File.join(Backup.base_directory, filename)
if File.exists?(path)
Backup.create_from_filename(filename)
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else
nil
end
end
def remove
File.delete(@path) if File.exists?(path)
after_remove_hook
end
def after_create_hook
upload_to_s3 if SiteSetting.enable_s3_backups?
end
def after_remove_hook
remove_from_s3 if SiteSetting.enable_s3_backups?
end
def s3_bucket
return @s3_bucket if @s3_bucket
raise Discourse::SiteSettingMissing.new("s3_backup_bucket") if SiteSetting.s3_backup_bucket.blank?
@s3_bucket = SiteSetting.s3_backup_bucket.downcase
end
def s3
require "s3_helper" unless defined? S3Helper
@s3_helper ||= S3Helper.new(s3_bucket)
end
def upload_to_s3
return unless s3
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File.open(@path) do |file|
s3.upload(file, @filename)
end
end
def remove_from_s3
return unless s3
s3.remove(@filename)
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end
def self.base_directory
File.join(Rails.root, "public", "backups", RailsMultisite::ConnectionManagement.current_db)
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end
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def self.chunk_path(identifier, filename, chunk_number)
File.join(Backup.base_directory, "tmp", identifier, "#{filename}.part#{chunk_number}")
end
def self.create_from_filename(filename)
Backup.new(filename).tap do |b|
b.path = File.join(Backup.base_directory, b.filename)
b.link = UrlHelper.schemaless "#{Discourse.base_url}/admin/backups/#{b.filename}"
b.size = File.size(b.path)
end
end
def self.remove_old
return if Rails.env.development?
all_backups = Backup.all
return if all_backups.size <= SiteSetting.maximum_backups
all_backups[SiteSetting.maximum_backups..-1].each(&:remove)
end
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end