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module Gitlab
module EtagCaching
class Router
Route = Struct.new(:regexp, :name)
# We enable an ETag for every request matching the regex.
# To match a regex the path needs to match the following:
# - Don't contain a reserved word (expect for the words used in the
# regex itself)
# - Ending in `noteable/issue/<id>/notes` for the `issue_notes` route
# - Ending in `issues/id`/realtime_changes` for the `issue_title` route
USED_IN_ROUTES = %w[noteable issue notes issues realtime_changes
commit pipelines merge_requests new].freeze
RESERVED_WORDS = DynamicPathValidator::WILDCARD_ROUTES - USED_IN_ROUTES
RESERVED_WORDS_REGEX = Regexp.union(*RESERVED_WORDS)
ROUTES = [
Gitlab::EtagCaching::Router::Route.new(
%r(^(?!.*(#{RESERVED_WORDS_REGEX})).*/noteable/issue/\d+/notes\z),
'issue_notes'
),
Gitlab::EtagCaching::Router::Route.new(
%r(^(?!.*(#{RESERVED_WORDS_REGEX})).*/issues/\d+/realtime_changes\z),
'issue_title'
),
Gitlab::EtagCaching::Router::Route.new(
%r(^(?!.*(#{RESERVED_WORDS_REGEX})).*/commit/\S+/pipelines\.json\z),
'commit_pipelines'
),
Gitlab::EtagCaching::Router::Route.new(
%r(^(?!.*(#{RESERVED_WORDS_REGEX})).*/merge_requests/new\.json\z),
'new_merge_request_pipelines'
),
Gitlab::EtagCaching::Router::Route.new(
%r(^(?!.*(#{RESERVED_WORDS_REGEX})).*/merge_requests/\d+/pipelines\.json\z),
'merge_request_pipelines'
),
Gitlab::EtagCaching::Router::Route.new(
%r(^(?!.*(#{RESERVED_WORDS_REGEX})).*/pipelines\.json\z),
'project_pipelines'
),
Gitlab::EtagCaching::Router::Route.new(
%r(^(?!.*(#{RESERVED_WORDS})).*/pipelines/\d+\.json\z),
'project_pipeline'
)
].freeze
def self.match(env)
ROUTES.find { |route| route.regexp.match(env['PATH_INFO']) }
end
end
end
end
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