Merge branch '47408-migrateuploadsworker-is-doing-n-1-queries-on-migration' into 'master'
Resolve "`MigrateUploadsWorker` is doing N+1 queries on migration" Closes #47408 See merge request gitlab-org/gitlab-ce!19547
This commit is contained in:
commit
8d9e0c0b8c
7 changed files with 75 additions and 26 deletions
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@ -65,10 +65,10 @@ class FileUploader < GitlabUploader
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SecureRandom.hex
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end
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def upload_paths(filename)
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def upload_paths(identifier)
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[
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File.join(secret, filename),
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File.join(base_dir(Store::REMOTE), secret, filename)
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File.join(secret, identifier),
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File.join(base_dir(Store::REMOTE), secret, identifier)
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]
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end
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@ -10,6 +10,17 @@ module ObjectStorage
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UnknownStoreError = Class.new(StandardError)
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ObjectStorageUnavailable = Class.new(StandardError)
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class ExclusiveLeaseTaken < StandardError
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def initialize(lease_key)
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@lease_key = lease_key
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end
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def message
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*lease_key_group, _ = *@lease_key.split(":")
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"Exclusive lease for #{lease_key_group.join(':')} is already taken."
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end
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end
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TMP_UPLOAD_PATH = 'tmp/uploads'.freeze
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module Store
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@ -29,7 +40,7 @@ module ObjectStorage
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end
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def retrieve_from_store!(identifier)
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paths = store_dirs.map { |store, path| File.join(path, identifier) }
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paths = upload_paths(identifier)
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unless current_upload_satisfies?(paths, model)
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# the upload we already have isn't right, find the correct one
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@ -261,7 +272,7 @@ module ObjectStorage
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end
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def delete_migrated_file(migrated_file)
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migrated_file.delete if exists?
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migrated_file.delete
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end
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def exists?
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@ -279,6 +290,13 @@ module ObjectStorage
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}
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end
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# Returns all the possible paths for an upload.
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# the `upload.path` is a lookup parameter, and it may change
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# depending on the `store` param.
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def upload_paths(identifier)
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store_dirs.map { |store, path| File.join(path, identifier) }
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end
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def cache!(new_file = sanitized_file)
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# We intercept ::UploadedFile which might be stored on remote storage
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# We use that for "accelerated" uploads, where we store result on remote storage
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@ -369,12 +387,13 @@ module ObjectStorage
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end
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def with_exclusive_lease
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uuid = Gitlab::ExclusiveLease.new(exclusive_lease_key, timeout: 1.hour.to_i).try_obtain
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raise 'exclusive lease already taken' unless uuid
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lease_key = exclusive_lease_key
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uuid = Gitlab::ExclusiveLease.new(lease_key, timeout: 1.hour.to_i).try_obtain
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raise ExclusiveLeaseTaken.new(lease_key) unless uuid
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yield uuid
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ensure
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Gitlab::ExclusiveLease.cancel(exclusive_lease_key, uuid)
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Gitlab::ExclusiveLease.cancel(lease_key, uuid)
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end
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#
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@ -22,7 +22,7 @@ module RecordsUploads
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Upload.transaction do
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uploads.where(path: upload_path).delete_all
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upload.destroy! if upload
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upload.delete if upload
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self.upload = build_upload.tap(&:save!)
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end
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@ -0,0 +1,5 @@
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---
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title: Optimize the upload migration proces
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merge_request: 15947
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author:
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type: fixed
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@ -85,13 +85,13 @@ shared_examples "migrates" do |to_store:, from_store: nil|
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it 'does not execute migrate!' do
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expect(subject).not_to receive(:unsafe_migrate!)
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expect { migrate(to) }.to raise_error('exclusive lease already taken')
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expect { migrate(to) }.to raise_error(ObjectStorage::ExclusiveLeaseTaken)
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end
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it 'does not execute use_file' do
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expect(subject).not_to receive(:unsafe_use_file)
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expect { subject.use_file }.to raise_error('exclusive lease already taken')
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expect { subject.use_file }.to raise_error(ObjectStorage::ExclusiveLeaseTaken)
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end
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after do
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@ -321,7 +321,7 @@ describe ObjectStorage do
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when_file_is_in_use do
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expect(uploader).not_to receive(:unsafe_migrate!)
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expect { uploader.migrate!(described_class::Store::REMOTE) }.to raise_error('exclusive lease already taken')
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expect { uploader.migrate!(described_class::Store::REMOTE) }.to raise_error(ObjectStorage::ExclusiveLeaseTaken)
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end
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end
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@ -329,7 +329,7 @@ describe ObjectStorage do
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when_file_is_in_use do
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expect(uploader).not_to receive(:unsafe_use_file)
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expect { uploader.use_file }.to raise_error('exclusive lease already taken')
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expect { uploader.use_file }.to raise_error(ObjectStorage::ExclusiveLeaseTaken)
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end
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end
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end
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@ -11,6 +11,12 @@ describe ObjectStorage::MigrateUploadsWorker, :sidekiq do
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let(:uploads) { Upload.all }
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let(:to_store) { ObjectStorage::Store::REMOTE }
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def perform(uploads)
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described_class.new.perform(uploads.ids, model_class.to_s, mounted_as, to_store)
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rescue ObjectStorage::MigrateUploadsWorker::Report::MigrationFailures
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# swallow
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end
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shared_examples "uploads migration worker" do
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describe '.enqueue!' do
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def enqueue!
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@ -69,12 +75,6 @@ describe ObjectStorage::MigrateUploadsWorker, :sidekiq do
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end
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describe '#perform' do
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def perform
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described_class.new.perform(uploads.ids, model_class.to_s, mounted_as, to_store)
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rescue ObjectStorage::MigrateUploadsWorker::Report::MigrationFailures
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# swallow
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end
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shared_examples 'outputs correctly' do |success: 0, failures: 0|
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total = success + failures
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@ -82,7 +82,7 @@ describe ObjectStorage::MigrateUploadsWorker, :sidekiq do
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it 'outputs the reports' do
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expect(Rails.logger).to receive(:info).with(%r{Migrated #{success}/#{total} files})
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perform
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perform(uploads)
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end
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end
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@ -90,7 +90,7 @@ describe ObjectStorage::MigrateUploadsWorker, :sidekiq do
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it 'outputs upload failures' do
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expect(Rails.logger).to receive(:warn).with(/Error .* I am a teapot/)
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perform
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perform(uploads)
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end
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end
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end
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@ -98,7 +98,7 @@ describe ObjectStorage::MigrateUploadsWorker, :sidekiq do
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it_behaves_like 'outputs correctly', success: 10
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it 'migrates files' do
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perform
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perform(uploads)
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expect(Upload.where(store: ObjectStorage::Store::LOCAL).count).to eq(0)
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end
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@ -123,6 +123,17 @@ describe ObjectStorage::MigrateUploadsWorker, :sidekiq do
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end
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it_behaves_like "uploads migration worker"
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describe "limits N+1 queries" do
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it "to N*5" do
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query_count = ActiveRecord::QueryRecorder.new { perform(uploads) }
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more_projects = create_list(:project, 3, :with_avatar)
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expected_queries_per_migration = 5 * more_projects.count
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expect { perform(Upload.all) }.not_to exceed_query_limit(query_count).with_threshold(expected_queries_per_migration)
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end
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end
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end
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context "for FileUploader" do
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@ -130,15 +141,29 @@ describe ObjectStorage::MigrateUploadsWorker, :sidekiq do
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let(:secret) { SecureRandom.hex }
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let(:mounted_as) { nil }
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def upload_file(project)
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uploader = FileUploader.new(project)
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uploader.store!(fixture_file_upload('spec/fixtures/doc_sample.txt'))
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end
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before do
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stub_uploads_object_storage(FileUploader)
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projects.map do |project|
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uploader = FileUploader.new(project)
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uploader.store!(fixture_file_upload('spec/fixtures/doc_sample.txt'))
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end
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projects.map(&method(:upload_file))
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end
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it_behaves_like "uploads migration worker"
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describe "limits N+1 queries" do
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it "to N*5" do
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query_count = ActiveRecord::QueryRecorder.new { perform(uploads) }
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more_projects = create_list(:project, 3)
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more_projects.map(&method(:upload_file))
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expected_queries_per_migration = 5 * more_projects.count
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expect { perform(Upload.all) }.not_to exceed_query_limit(query_count).with_threshold(expected_queries_per_migration)
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end
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end
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end
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end
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