gitlab-org--gitlab-foss/lib/gitlab/search_results.rb
Markus Koller 49c83155cc
Load search result counts asynchronously
Querying all counts for the different search results in the same request
led to timeouts, so we now only calculate the count for the *current*
search results, and request the others in separate asynchronous calls.
2019-08-12 22:01:15 +02:00

195 lines
5.4 KiB
Ruby

# frozen_string_literal: true
module Gitlab
class SearchResults
COUNT_LIMIT = 1001
attr_reader :current_user, :query, :per_page
# Limit search results by passed projects
# It allows us to search only for projects user has access to
attr_reader :limit_projects
# Whether a custom filter is used to restrict scope of projects.
# If the default filter (which lists all projects user has access to)
# is used, we can skip it when filtering merge requests and optimize the
# query
attr_reader :default_project_filter
def initialize(current_user, limit_projects, query, default_project_filter: false, per_page: 20)
@current_user = current_user
@limit_projects = limit_projects || Project.all
@query = query
@default_project_filter = default_project_filter
@per_page = per_page
end
def objects(scope, page = nil, without_count = true)
collection = case scope
when 'projects'
projects
when 'issues'
issues
when 'merge_requests'
merge_requests
when 'milestones'
milestones
when 'users'
users
else
Kaminari.paginate_array([])
end.page(page).per(per_page)
without_count ? collection.without_count : collection
end
def formatted_count(scope)
case scope
when 'projects'
formatted_limited_count(limited_projects_count)
when 'issues'
formatted_limited_count(limited_issues_count)
when 'merge_requests'
formatted_limited_count(limited_merge_requests_count)
when 'milestones'
formatted_limited_count(limited_milestones_count)
when 'users'
formatted_limited_count(limited_users_count)
end
end
def formatted_limited_count(count)
if count >= COUNT_LIMIT
"#{COUNT_LIMIT - 1}+"
else
count.to_s
end
end
def limited_projects_count
@limited_projects_count ||= limited_count(projects)
end
def limited_issues_count
return @limited_issues_count if @limited_issues_count
# By default getting limited count (e.g. 1000+) is fast on issuable
# collections except for issues, where filtering both not confidential
# and confidential issues user has access to, is too complex.
# It's faster to try to fetch all public issues first, then only
# if necessary try to fetch all issues.
sum = limited_count(issues(public_only: true))
@limited_issues_count = sum < count_limit ? limited_count(issues) : sum
end
def limited_merge_requests_count
@limited_merge_requests_count ||= limited_count(merge_requests)
end
def limited_milestones_count
@limited_milestones_count ||= limited_count(milestones)
end
def limited_users_count
@limited_users_count ||= limited_count(users)
end
def single_commit_result?
false
end
def count_limit
COUNT_LIMIT
end
def users
return User.none unless Ability.allowed?(current_user, :read_users_list)
UsersFinder.new(current_user, search: query).execute
end
private
def projects
limit_projects.search(query)
end
def issues(finder_params = {})
issues = IssuesFinder.new(current_user, issuable_params.merge(finder_params)).execute
unless default_project_filter
issues = issues.where(project_id: project_ids_relation) # rubocop: disable CodeReuse/ActiveRecord
end
issues
end
# rubocop: disable CodeReuse/ActiveRecord
def milestones
milestones = Milestone.search(query)
milestones = filter_milestones_by_project(milestones)
milestones.reorder('updated_at DESC')
end
# rubocop: enable CodeReuse/ActiveRecord
def merge_requests
merge_requests = MergeRequestsFinder.new(current_user, issuable_params).execute
unless default_project_filter
merge_requests = merge_requests.in_projects(project_ids_relation)
end
merge_requests
end
def default_scope
'projects'
end
# Filter milestones by authorized projects.
# For performance reasons project_id is being plucked
# to be used on a smaller query.
#
# rubocop: disable CodeReuse/ActiveRecord
def filter_milestones_by_project(milestones)
project_ids =
milestones.where(project_id: project_ids_relation)
.select(:project_id).distinct
.pluck(:project_id)
return Milestone.none if project_ids.nil?
authorized_project_ids_relation =
Project.where(id: project_ids).ids_with_milestone_available_for(current_user)
milestones.where(project_id: authorized_project_ids_relation)
end
# rubocop: enable CodeReuse/ActiveRecord
# rubocop: disable CodeReuse/ActiveRecord
def project_ids_relation
limit_projects.select(:id).reorder(nil)
end
# rubocop: enable CodeReuse/ActiveRecord
def issuable_params
{}.tap do |params|
params[:sort] = 'updated_desc'
if query =~ /#(\d+)\z/
params[:iids] = $1
else
params[:search] = query
end
end
end
# rubocop: disable CodeReuse/ActiveRecord
def limited_count(relation)
relation.reorder(nil).limit(count_limit).size
end
# rubocop: enable CodeReuse/ActiveRecord
end
end