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author | Sean McGivern <sean@gitlab.com> | 2018-08-16 15:23:02 +0300 |
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committer | Sean McGivern <sean@gitlab.com> | 2018-08-21 14:45:05 +0300 |
commit | fd072f7df71257e694a1d82525c4237ed9cef927 (patch) | |
tree | d3973ceb80fac6aac4369c608957ca2698a2a1e8 /spec/services/issues | |
parent | 2017c5c62abde0d6f24e3afc120365ee1aaaca4b (diff) |
Fix CI pipelines N+1 in Issues::ReferencedMergeRequestsService
Whether the preloading belongs in the service or the controller is arguable,
here. As the service is only used for one controller action, it seems reasonable
to put it in the service, but that is not a definitive answer.
Adding the preloads for MR project routes here doesn't seem to work, perhaps
because of https://github.com/rails/rails/issues/32140.
Diffstat (limited to 'spec/services/issues')
-rw-r--r-- | spec/services/issues/referenced_merge_requests_service_spec.rb | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/spec/services/issues/referenced_merge_requests_service_spec.rb b/spec/services/issues/referenced_merge_requests_service_spec.rb index 3349b97e688..d57bcf55af1 100644 --- a/spec/services/issues/referenced_merge_requests_service_spec.rb +++ b/spec/services/issues/referenced_merge_requests_service_spec.rb @@ -47,6 +47,24 @@ describe Issues::ReferencedMergeRequestsService do expect { service.execute(issue) }.not_to exceed_query_limit(control_count) end + + it 'preloads the head pipeline for each merge request, and its routes' do + # Hack to ensure no data is preserved on issue before starting the spec, + # to avoid false negatives + reloaded_issue = Issue.find(issue.id) + + pipeline_routes = lambda do |merge_requests| + merge_requests.map { |mr| mr.head_pipeline&.project&.full_path } + end + + closing_mr_other_project.update!(head_pipeline: create(:ci_pipeline)) + control_count = ActiveRecord::QueryRecorder.new { service.execute(reloaded_issue).each(&pipeline_routes) } + + closing_mr.update!(head_pipeline: create(:ci_pipeline)) + + expect { service.execute(issue).each(&pipeline_routes) } + .not_to exceed_query_limit(control_count) + end end end |