debian-mirror-gitlab/lib/gitlab/background_migration/backfill_snippet_repositories.rb

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2020-04-08 14:13:33 +05:30
# frozen_string_literal: true
module Gitlab
module BackgroundMigration
# Class that will fill the project_repositories table for projects that
# are on hashed storage and an entry is missing in this table.
class BackfillSnippetRepositories
MAX_RETRIES = 2
def perform(start_id, stop_id)
Snippet.includes(:author, snippet_repository: :shard).where(id: start_id..stop_id).find_each do |snippet|
# We need to expire the exists? value for the cached method in case it was cached
snippet.repository.expire_exists_cache
next if repository_present?(snippet)
retry_index = 0
begin
create_repository_and_files(snippet)
logger.info(message: 'Snippet Migration: repository created and migrated', snippet: snippet.id)
rescue => e
retry_index += 1
retry if retry_index < MAX_RETRIES
logger.error(message: "Snippet Migration: error migrating snippet. Reason: #{e.message}", snippet: snippet.id)
destroy_snippet_repository(snippet)
delete_repository(snippet)
end
end
end
private
def repository_present?(snippet)
snippet.snippet_repository && !snippet.empty_repo?
end
def create_repository_and_files(snippet)
snippet.create_repository
create_commit(snippet)
end
def destroy_snippet_repository(snippet)
# Removing the db record
snippet.snippet_repository&.destroy
rescue => e
logger.error(message: "Snippet Migration: error destroying snippet repository. Reason: #{e.message}", snippet: snippet.id)
end
def delete_repository(snippet)
# Removing the repository in disk
snippet.repository.remove if snippet.repository_exists?
rescue => e
logger.error(message: "Snippet Migration: error deleting repository. Reason: #{e.message}", snippet: snippet.id)
end
def logger
@logger ||= Gitlab::BackgroundMigration::Logger.build
end
def snippet_action(snippet)
# We don't need the previous_path param
# Because we're not updating any existing file
[{ file_path: filename(snippet),
content: snippet.content }]
end
def filename(snippet)
snippet.file_name.presence || empty_file_name
end
def empty_file_name
@empty_file_name ||= "#{SnippetRepository::DEFAULT_EMPTY_FILE_NAME}1.txt"
end
def commit_attrs
@commit_attrs ||= { branch_name: 'master', message: 'Initial commit' }
end
def create_commit(snippet)
snippet.snippet_repository.multi_files_action(snippet.author, snippet_action(snippet), commit_attrs)
end
end
end
end