132 lines
3.7 KiB
Ruby
132 lines
3.7 KiB
Ruby
# frozen_string_literal: true
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require 'spec_helper'
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RSpec.describe BackgroundMigrationWorker, :clean_gitlab_redis_shared_state do
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let(:worker) { described_class.new }
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describe '.minimum_interval' do
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it 'returns 2 minutes' do
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expect(described_class.minimum_interval).to eq(2.minutes.to_i)
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end
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end
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describe '#perform' do
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before do
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allow(worker).to receive(:jid).and_return(1)
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expect(worker).to receive(:always_perform?).and_return(false)
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end
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context 'when lease can be obtained' do
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before do
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expect(Gitlab::BackgroundMigration)
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.to receive(:perform)
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.with('Foo', [10, 20])
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end
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it 'performs a background migration' do
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worker.perform('Foo', [10, 20])
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end
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context 'when lease_attempts is 1' do
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it 'performs a background migration' do
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worker.perform('Foo', [10, 20], 1)
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end
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end
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end
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context 'when lease not obtained (migration of same class was performed recently)' do
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before do
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expect(Gitlab::BackgroundMigration).not_to receive(:perform)
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worker.lease_for('Foo').try_obtain
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end
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it 'reschedules the migration and decrements the lease_attempts' do
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expect(described_class)
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.to receive(:perform_in)
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.with(a_kind_of(Numeric), 'Foo', [10, 20], 4)
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worker.perform('Foo', [10, 20], 5)
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end
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context 'when lease_attempts is 1' do
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it 'reschedules the migration and decrements the lease_attempts' do
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expect(described_class)
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.to receive(:perform_in)
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.with(a_kind_of(Numeric), 'Foo', [10, 20], 0)
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worker.perform('Foo', [10, 20], 1)
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end
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end
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context 'when lease_attempts is 0' do
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it 'gives up performing the migration' do
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expect(described_class).not_to receive(:perform_in)
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expect(Sidekiq.logger).to receive(:warn).with(
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class: 'Foo',
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message: 'Job could not get an exclusive lease after several tries. Giving up.',
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job_id: 1)
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worker.perform('Foo', [10, 20], 0)
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end
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end
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end
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context 'when database is not healthy' do
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before do
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allow(worker).to receive(:healthy_database?).and_return(false)
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end
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it 'reschedules a migration if the database is not healthy' do
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expect(described_class)
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.to receive(:perform_in)
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.with(a_kind_of(Numeric), 'Foo', [10, 20], 4)
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worker.perform('Foo', [10, 20])
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end
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context 'when lease_attempts is 0' do
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it 'gives up performing the migration' do
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expect(described_class).not_to receive(:perform_in)
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expect(Sidekiq.logger).to receive(:warn).with(
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class: 'Foo',
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message: 'Database was unhealthy after several tries. Giving up.',
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job_id: 1)
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worker.perform('Foo', [10, 20], 0)
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end
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end
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end
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it 'sets the class that will be executed as the caller_id' do
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expect(Gitlab::BackgroundMigration).to receive(:perform) do
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expect(Labkit::Context.current.to_h).to include('meta.caller_id' => 'Foo')
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end
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worker.perform('Foo', [10, 20])
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end
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end
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describe '#healthy_database?' do
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context 'when replication lag is too great' do
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it 'returns false' do
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allow(Postgresql::ReplicationSlot)
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.to receive(:lag_too_great?)
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.and_return(true)
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expect(worker.healthy_database?).to eq(false)
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end
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context 'when replication lag is small enough' do
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it 'returns true' do
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allow(Postgresql::ReplicationSlot)
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.to receive(:lag_too_great?)
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.and_return(false)
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expect(worker.healthy_database?).to eq(true)
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end
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end
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end
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end
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end
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