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|
# frozen_string_literal: true
require 'spec_helper'
RSpec.describe Gitlab::Database::BackgroundMigration::BatchedMigrationWrapper, '#perform' do
subject { described_class.new.perform(job_record) }
let(:job_class) { Gitlab::BackgroundMigration::CopyColumnUsingBackgroundMigrationJob }
let_it_be(:pause_ms) { 250 }
let_it_be(:active_migration) { create(:batched_background_migration, :active, job_arguments: [:id, :other_id]) }
let!(:job_record) do
create(:batched_background_migration_job,
batched_migration: active_migration,
pause_ms: pause_ms
)
end
let(:job_instance) { double('job instance', batch_metrics: {}) }
before do
allow(job_class).to receive(:new).and_return(job_instance)
end
it 'runs the migration job' do
expect(job_instance).to receive(:perform).with(1, 10, 'events', 'id', 1, pause_ms, 'id', 'other_id')
subject
end
it 'updates the tracking record in the database' do
test_metrics = { 'my_metris' => 'some value' }
expect(job_instance).to receive(:perform)
expect(job_instance).to receive(:batch_metrics).and_return(test_metrics)
expect(job_record).to receive(:update!).with(hash_including(attempts: 1, status: :running)).and_call_original
freeze_time do
subject
reloaded_job_record = job_record.reload
expect(reloaded_job_record).not_to be_pending
expect(reloaded_job_record.attempts).to eq(1)
expect(reloaded_job_record.started_at).to eq(Time.current)
expect(reloaded_job_record.metrics).to eq(test_metrics)
end
end
context 'when running a job that failed previously' do
let!(:job_record) do
create(:batched_background_migration_job,
batched_migration: active_migration,
pause_ms: pause_ms,
attempts: 1,
status: :failed,
finished_at: 1.hour.ago,
metrics: { 'my_metrics' => 'some_value' }
)
end
it 'increments attempts and updates other fields' do
updated_metrics = { 'updated_metrics' => 'some_value' }
expect(job_instance).to receive(:perform)
expect(job_instance).to receive(:batch_metrics).and_return(updated_metrics)
expect(job_record).to receive(:update!).with(
hash_including(attempts: 2, status: :running, finished_at: nil, metrics: {})
).and_call_original
freeze_time do
subject
job_record.reload
expect(job_record).not_to be_failed
expect(job_record.attempts).to eq(2)
expect(job_record.started_at).to eq(Time.current)
expect(job_record.finished_at).to eq(Time.current)
expect(job_record.metrics).to eq(updated_metrics)
end
end
end
context 'reporting prometheus metrics' do
let(:labels) { job_record.batched_migration.prometheus_labels }
before do
allow(job_instance).to receive(:perform)
end
it 'reports batch_size' do
expect(described_class.metrics[:gauge_batch_size]).to receive(:set).with(labels, job_record.batch_size)
subject
end
it 'reports sub_batch_size' do
expect(described_class.metrics[:gauge_sub_batch_size]).to receive(:set).with(labels, job_record.sub_batch_size)
subject
end
it 'reports interval' do
expect(described_class.metrics[:gauge_interval]).to receive(:set).with(labels, job_record.batched_migration.interval)
subject
end
it 'reports updated tuples (currently based on batch_size)' do
expect(described_class.metrics[:counter_updated_tuples]).to receive(:increment).with(labels, job_record.batch_size)
subject
end
it 'reports migrated tuples' do
count = double
expect(job_record.batched_migration).to receive(:migrated_tuple_count).and_return(count)
expect(described_class.metrics[:gauge_migrated_tuples]).to receive(:set).with(labels, count)
subject
end
it 'reports summary of query timings' do
metrics = { 'timings' => { 'update_all' => [1, 2, 3, 4, 5] } }
expect(job_instance).to receive(:batch_metrics).and_return(metrics)
metrics['timings'].each do |key, timings|
summary_labels = labels.merge(operation: key)
timings.each do |timing|
expect(described_class.metrics[:histogram_timings]).to receive(:observe).with(summary_labels, timing)
end
end
subject
end
it 'reports job duration' do
freeze_time do
expect(Time).to receive(:current).and_return(Time.zone.now - 5.seconds).ordered
allow(Time).to receive(:current).and_call_original
expect(described_class.metrics[:gauge_job_duration]).to receive(:set).with(labels, 5.seconds)
subject
end
end
it 'reports the total tuple count for the migration' do
expect(described_class.metrics[:gauge_total_tuple_count]).to receive(:set).with(labels, job_record.batched_migration.total_tuple_count)
subject
end
it 'reports last updated at timestamp' do
freeze_time do
expect(described_class.metrics[:gauge_last_update_time]).to receive(:set).with(labels, Time.current.to_i)
subject
end
end
end
context 'when the migration job does not raise an error' do
it 'marks the tracking record as succeeded' do
expect(job_instance).to receive(:perform).with(1, 10, 'events', 'id', 1, pause_ms, 'id', 'other_id')
freeze_time do
subject
reloaded_job_record = job_record.reload
expect(reloaded_job_record).to be_succeeded
expect(reloaded_job_record.finished_at).to eq(Time.current)
end
end
end
context 'when the migration job raises an error' do
shared_examples 'an error is raised' do |error_class|
it 'marks the tracking record as failed' do
expect(job_instance).to receive(:perform)
.with(1, 10, 'events', 'id', 1, pause_ms, 'id', 'other_id')
.and_raise(error_class)
freeze_time do
expect { subject }.to raise_error(error_class)
reloaded_job_record = job_record.reload
expect(reloaded_job_record).to be_failed
expect(reloaded_job_record.finished_at).to eq(Time.current)
end
end
end
it_behaves_like 'an error is raised', RuntimeError.new('Something broke!')
it_behaves_like 'an error is raised', SignalException.new('SIGTERM')
end
end
|
