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module Gitlab
module BackgroundMigration
class PrepareUnhashedUploads
# For bulk_queue_background_migration_jobs_by_range
include Database::MigrationHelpers
FILE_PATH_BATCH_SIZE = 500
UPLOAD_DIR = "#{CarrierWave.root}/uploads".freeze
FOLLOW_UP_MIGRATION = 'PopulateUntrackedUploads'.freeze
class UnhashedUploadFile < ActiveRecord::Base
include EachBatch
self.table_name = 'unhashed_upload_files'
end
def perform
return unless migrate?
clear_unhashed_upload_file_paths
store_unhashed_upload_file_paths
schedule_populate_untracked_uploads_jobs
end
private
def migrate?
UnhashedUploadFile.table_exists?
end
def clear_unhashed_upload_file_paths
UnhashedUploadFile.delete_all
end
def store_unhashed_upload_file_paths
return unless Dir.exist?(UPLOAD_DIR)
file_paths = []
each_file_path(UPLOAD_DIR) do |file_path|
file_paths << file_path
if file_paths.size >= FILE_PATH_BATCH_SIZE
insert_file_paths(file_paths)
file_paths = []
end
end
insert_file_paths(file_paths) if file_paths.any?
end
def each_file_path(search_dir, &block)
cmd = build_find_command(search_dir)
Open3.popen2(*cmd) do |stdin, stdout, status_thread|
stdout.each_line("\0") do |line|
yield(line.chomp("\0"))
end
raise "Find command failed" unless status_thread.value.success?
end
end
def build_find_command(search_dir)
cmd = ['find', search_dir, '-type', 'f', '!', '-path', "#{UPLOAD_DIR}/@hashed/*", '!', '-path', "#{UPLOAD_DIR}/tmp/*", '-print0']
['ionice', '-c', 'Idle'] + cmd if ionice_is_available?
cmd
end
def ionice_is_available?
Gitlab::Utils.which('ionice')
rescue StandardError
# In this case, returning false is relatively safe, even though it isn't very nice
false
end
def insert_file_paths(file_paths)
file_paths.each do |file_path|
insert_file_path(file_path)
end
end
def insert_file_path(file_path)
table_columns_and_values = 'unhashed_upload_files (path, created_at, updated_at) VALUES (?, ?, ?)'
sql = if Gitlab::Database.postgresql?
"INSERT INTO #{table_columns_and_values} ON CONFLICT DO NOTHING;"
else
"INSERT IGNORE INTO #{table_columns_and_values};"
end
timestamp = Time.now.utc.iso8601
sql = ActiveRecord::Base.send(:sanitize_sql_array, [sql, file_path, timestamp, timestamp])
ActiveRecord::Base.connection.execute(sql)
end
def schedule_populate_untracked_uploads_jobs
bulk_queue_background_migration_jobs_by_range(UnhashedUploadFile, FOLLOW_UP_MIGRATION)
end
end
end
end
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