Add latest changes from gitlab-org/gitlab@master

1 files changed, 98 insertions, 0 deletions

diff --git a/spec/workers/cluster_update_app_worker_spec.rb b/spec/workers/cluster_update_app_worker_spec.rb
new file mode 100644
index 00000000000..e540ede4bc0
--- /dev/null
+++ b/spec/workers/cluster_update_app_worker_spec.rb
@@ -0,0 +1,98 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe ClusterUpdateAppWorker do
+  include ExclusiveLeaseHelpers
+
+  let_it_be(:project) { create(:project) }
+
+  let(:prometheus_update_service) { spy }
+
+  subject { described_class.new }
+
+  around do |example|
+    Timecop.freeze(Time.now) { example.run }
+  end
+
+  before do
+    allow(::Clusters::Applications::PrometheusUpdateService).to receive(:new).and_return(prometheus_update_service)
+  end
+
+  describe '#perform' do
+    context 'when the application last_update_started_at is higher than the time the job was scheduled in' do
+      it 'does nothing' do
+        application = create(:clusters_applications_prometheus, :updated, last_update_started_at: Time.now)
+
+        expect(prometheus_update_service).not_to receive(:execute)
+
+        expect(subject.perform(application.name, application.id, project.id, Time.now - 5.minutes)).to be_nil
+      end
+    end
+
+    context 'when another worker is already running' do
+      it 'returns nil' do
+        application = create(:clusters_applications_prometheus, :updating)
+
+        expect(subject.perform(application.name, application.id, project.id, Time.now)).to be_nil
+      end
+    end
+
+    it 'executes PrometheusUpdateService' do
+      application = create(:clusters_applications_prometheus, :installed)
+
+      expect(prometheus_update_service).to receive(:execute)
+
+      subject.perform(application.name, application.id, project.id, Time.now)
+    end
+
+    context 'with exclusive lease' do
+      let(:application) { create(:clusters_applications_prometheus, :installed) }
+      let(:lease_key) { "#{described_class.name.underscore}-#{application.id}" }
+
+      before do
+        allow(Gitlab::ExclusiveLease).to receive(:new)
+        stub_exclusive_lease_taken(lease_key)
+      end
+
+      it 'does not allow same app to be updated concurrently by same project' do
+        expect(Clusters::Applications::PrometheusUpdateService).not_to receive(:new)
+
+        subject.perform(application.name, application.id, project.id, Time.now)
+      end
+
+      it 'does not allow same app to be updated concurrently by different project' do
+        project1 = create(:project)
+
+        expect(Clusters::Applications::PrometheusUpdateService).not_to receive(:new)
+
+        subject.perform(application.name, application.id, project1.id, Time.now)
+      end
+
+      it 'allows different app to be updated concurrently by same project' do
+        application2 = create(:clusters_applications_prometheus, :installed)
+        lease_key2 = "#{described_class.name.underscore}-#{application2.id}"
+
+        stub_exclusive_lease(lease_key2)
+
+        expect(Clusters::Applications::PrometheusUpdateService).to receive(:new)
+          .with(application2, project)
+
+        subject.perform(application2.name, application2.id, project.id, Time.now)
+      end
+
+      it 'allows different app to be updated by different project' do
+        application2 = create(:clusters_applications_prometheus, :installed)
+        lease_key2 = "#{described_class.name.underscore}-#{application2.id}"
+        project2 = create(:project)
+
+        stub_exclusive_lease(lease_key2)
+
+        expect(Clusters::Applications::PrometheusUpdateService).to receive(:new)
+          .with(application2, project2)
+
+        subject.perform(application2.name, application2.id, project2.id, Time.now)
+      end
+    end
+  end
+end