gitlab-org--gitlab-foss/app/workers/git_garbage_collect_worker.rb
Zeger-Jan van de Weg e03602e09d
Ensure pool participants are linked before GC
In theory the case could happen that the initial linking of the pool
fails and so do all the retries that Sidekiq performs. This could lead
to data loss.

To prevent that case, linking is done before Gits GC too. This makes
sure that case doesn't happen.
2019-01-14 16:09:47 +01:00

87 lines
2.3 KiB
Ruby

# frozen_string_literal: true
class GitGarbageCollectWorker
include ApplicationWorker
sidekiq_options retry: false
# Timeout set to 24h
LEASE_TIMEOUT = 86400
def perform(project_id, task = :gc, lease_key = nil, lease_uuid = nil)
project = Project.find(project_id)
active_uuid = get_lease_uuid(lease_key)
if active_uuid
return unless active_uuid == lease_uuid
renew_lease(lease_key, active_uuid)
else
lease_uuid = try_obtain_lease(lease_key)
return unless lease_uuid
end
task = task.to_sym
project.link_pool_repository
gitaly_call(task, project.repository.raw_repository)
# Refresh the branch cache in case garbage collection caused a ref lookup to fail
flush_ref_caches(project) if task == :gc
project.repository.expire_statistics_caches
# In case pack files are deleted, release libgit2 cache and open file
# descriptors ASAP instead of waiting for Ruby garbage collection
project.cleanup
ensure
cancel_lease(lease_key, lease_uuid) if lease_key.present? && lease_uuid.present?
end
private
def try_obtain_lease(key)
::Gitlab::ExclusiveLease.new(key, timeout: LEASE_TIMEOUT).try_obtain
end
def renew_lease(key, uuid)
::Gitlab::ExclusiveLease.new(key, uuid: uuid, timeout: LEASE_TIMEOUT).renew
end
def cancel_lease(key, uuid)
::Gitlab::ExclusiveLease.cancel(key, uuid)
end
def get_lease_uuid(key)
::Gitlab::ExclusiveLease.get_uuid(key)
end
## `repository` has to be a Gitlab::Git::Repository
def gitaly_call(task, repository)
client = Gitlab::GitalyClient::RepositoryService.new(repository)
case task
when :gc
client.garbage_collect(bitmaps_enabled?)
when :full_repack
client.repack_full(bitmaps_enabled?)
when :incremental_repack
client.repack_incremental
end
rescue GRPC::NotFound => e
Gitlab::GitLogger.error("#{__method__} failed:\nRepository not found")
raise Gitlab::Git::Repository::NoRepository.new(e)
rescue GRPC::BadStatus => e
Gitlab::GitLogger.error("#{__method__} failed:\n#{e}")
raise Gitlab::Git::CommandError.new(e)
end
def flush_ref_caches(project)
project.repository.after_create_branch
project.repository.branch_names
project.repository.has_visible_content?
end
def bitmaps_enabled?
Gitlab::CurrentSettings.housekeeping_bitmaps_enabled
end
end