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# Gitaly note: JV: will probably be migrated indirectly by migrating the call sites.
module Gitlab
module Git
class RevList
include Gitlab::Git::Popen
attr_reader :oldrev, :newrev, :path_to_repo
def initialize(path_to_repo:, newrev:, oldrev: nil)
@oldrev = oldrev
@newrev = newrev
@path_to_repo = path_to_repo
end
# This method returns an array of new commit references
def new_refs
execute([*base_args, newrev, '--not', '--all'])
end
# Finds newly added objects
# Returns an array of shas
#
# Can skip objects which do not have a path using required_path: true
# This skips commit objects and root trees, which might not be needed when
# looking for blobs
#
# Can return a lazy enumerator to limit work done on megabytes of data
def new_objects(require_path: nil, lazy: false, not_in: nil)
object_output = execute([*base_args, newrev, *not_in_refs(not_in), '--objects'])
objects_from_output(object_output, require_path: require_path, lazy: lazy)
end
def all_objects(require_path: nil)
object_output = execute([*base_args, '--all', '--objects'])
objects_from_output(object_output, require_path: require_path, lazy: true)
end
# This methods returns an array of missed references
#
# Should become obsolete after https://gitlab.com/gitlab-org/gitaly/issues/348.
def missed_ref
execute([*base_args, '--max-count=1', oldrev, "^#{newrev}"])
end
private
def not_in_refs(references)
return ['--not', '--all'] unless references
return [] if references.empty?
references.prepend('--not')
end
def execute(args)
output, status = popen(args, nil, Gitlab::Git::Env.to_env_hash)
unless status.zero?
raise "Got a non-zero exit code while calling out `#{args.join(' ')}`: #{output}"
end
output.split("\n")
end
def base_args
[
Gitlab.config.git.bin_path,
"--git-dir=#{path_to_repo}",
'rev-list'
]
end
def objects_from_output(object_output, require_path: nil, lazy: nil)
objects = object_output.lazy.map do |output_line|
sha, path = output_line.split(' ', 2)
next if require_path && path.blank?
sha
end.reject(&:nil?)
if lazy
objects
else
objects.force
end
end
end
end
end
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