Disable STI of ActiveRecord. Refactoring specs.

db/post_migrate/20171124104327_migrate_kubernetes_service_to_new_clusters_architectures.rb

@@ -12,6 +12,7 @@ class MigrateKubernetesServiceToNewClustersArchitectures < ActiveRecord::Migrati
     has_many :cluster_projects, class_name: 'MigrateKubernetesServiceToNewClustersArchitectures::ClustersProject'
     has_many :clusters, through: :cluster_projects, class_name: 'MigrateKubernetesServiceToNewClustersArchitectures::Cluster'
     has_many :services, class_name: 'MigrateKubernetesServiceToNewClustersArchitectures::Service'
+    has_one :kubernetes_service, -> { where(category: 'deployment', type: 'KubernetesService') }, class_name: 'MigrateKubernetesServiceToNewClustersArchitectures::Service', inverse_of: :project, foreign_key: :project_id
   end
 
   class Cluster < ActiveRecord::Base
@@ -55,8 +56,9 @@ class MigrateKubernetesServiceToNewClustersArchitectures < ActiveRecord::Migrati
     include EachBatch
 
     self.table_name = 'services'
+    self.inheritance_column = :_type_disabled # Disable STI, otherwise KubernetesModel will be looked up
 
-    belongs_to :project, class_name: 'MigrateKubernetesServiceToNewClustersArchitectures::Project'
+    belongs_to :project, class_name: 'MigrateKubernetesServiceToNewClustersArchitectures::Project', foreign_key: :project_id
 
     scope :unmanaged_kubernetes_service, -> do
       joins('LEFT JOIN projects ON projects.id = services.project_id')
@@ -72,6 +74,22 @@ class MigrateKubernetesServiceToNewClustersArchitectures < ActiveRecord::Migrati
     scope :kubernetes_service_without_template, -> do
       where(category: 'deployment', type: 'KubernetesService', template: false)
     end
+
+    def api_url
+      JSON.parse(self.properties)['api_url']
+    end
+
+    def ca_pem
+      JSON.parse(self.properties)['ca_pem']
+    end
+
+    def namespace
+      JSON.parse(self.properties)['namespace']
+    end
+
+    def token
+      JSON.parse(self.properties)['token']
+    end
   end
 
   def find_dedicated_environement_scope(project)
@@ -101,7 +119,7 @@ class MigrateKubernetesServiceToNewClustersArchitectures < ActiveRecord::Migrati
           name: DEFAULT_KUBERNETES_SERVICE_CLUSTER_NAME,
           provider_type: MigrateKubernetesServiceToNewClustersArchitectures::Cluster.provider_types[:user],
           platform_type: MigrateKubernetesServiceToNewClustersArchitectures::Cluster.platform_types[:kubernetes],
-          projects: [kubernetes_service.project.becomes(MigrateKubernetesServiceToNewClustersArchitectures::Project)],
+          projects: [kubernetes_service.project],
           environment_scope: find_dedicated_environement_scope(kubernetes_service.project),
           platform_kubernetes_attributes: {
             api_url: kubernetes_service.api_url,

spec/migrations/migrate_kubernetes_service_to_new_clusters_architectures_spec.rb

@@ -5,27 +5,32 @@ describe MigrateKubernetesServiceToNewClustersArchitectures, :migration do
   context 'when unique KubernetesService exists' do
     shared_examples 'KubernetesService migration' do
       let(:sample_num) { 2 }
-      let(:projects) { create_list(:project, sample_num) }
+
+      let(:projects) do
+        (1..sample_num).each_with_object([]) do |n, array|
+          array << MigrateKubernetesServiceToNewClustersArchitectures::Project.create!
+        end
+      end
 
       let!(:kubernetes_services) do
         projects.map do |project|
-          create(:kubernetes_service,
+          MigrateKubernetesServiceToNewClustersArchitectures::Service.create!(
             project: project,
             active: active,
-                 api_url: "https://kubernetes#{project.id}.com",
-                 token: defined?(token) ? token : "token#{project.id}",
-                 ca_pem: "ca_pem#{project.id}")
+            category: 'deployment',
+            type: 'KubernetesService',
+            properties: "{\"namespace\":\"prod\",\"api_url\":\"https://kubernetes#{project.id}.com\",\"ca_pem\":\"ca_pem#{project.id}\",\"token\":\"token#{project.id}\"}")
         end
       end
 
       it 'migrates the KubernetesService to Platform::Kubernetes' do
-        expect { migrate! }.to change { Clusters::Cluster.count }.by(sample_num)
+        expect { migrate! }.to change { MigrateKubernetesServiceToNewClustersArchitectures::Cluster.count }.by(sample_num)
 
         projects.each do |project|
           project.clusters.last.tap do |cluster|
             expect(cluster.enabled).to eq(active)
             expect(cluster.platform_kubernetes.api_url).to eq(project.kubernetes_service.api_url)
-            expect(cluster.platform_kubernetes.ca_pem).to eq(project.kubernetes_service.ca_pem)
+            expect(cluster.platform_kubernetes.ca_cert).to eq(project.kubernetes_service.ca_pem)
             expect(cluster.platform_kubernetes.token).to eq(project.kubernetes_service.token)
             expect(project.kubernetes_service).not_to be_active
           end
@@ -42,34 +47,38 @@ describe MigrateKubernetesServiceToNewClustersArchitectures, :migration do
 
   context 'when unique KubernetesService spawned from Service Template' do
     let(:sample_num) { 2 }
-    let(:projects) { create_list(:project, sample_num) }
+
+    let(:projects) do
+      (1..sample_num).each_with_object([]) do |n, array|
+        array << MigrateKubernetesServiceToNewClustersArchitectures::Project.create!
+      end
+    end
 
     let!(:kubernetes_service_template) do
-      create(:kubernetes_service,
-             project: nil,
+      MigrateKubernetesServiceToNewClustersArchitectures::Service.create!(
         template: true,
-             api_url: "https://sample.kubernetes.com",
-             token: "token-sample",
-             ca_pem: "ca_pem-sample")
+        category: 'deployment',
+        type: 'KubernetesService',
+        properties: "{\"namespace\":\"prod\",\"api_url\":\"https://sample.kubernetes.com\",\"ca_pem\":\"ca_pem-sample\",\"token\":\"token-sample\"}")
     end
 
     let!(:kubernetes_services) do
       projects.map do |project|
-        create(:kubernetes_service,
+        MigrateKubernetesServiceToNewClustersArchitectures::Service.create!(
           project: project,
-               api_url: kubernetes_service_template.api_url,
-               token: kubernetes_service_template.token,
-               ca_pem: kubernetes_service_template.ca_pem)
+          category: 'deployment',
+          type: 'KubernetesService',
+          properties: "{\"namespace\":\"prod\",\"api_url\":\"#{kubernetes_service_template.api_url}\",\"ca_pem\":\"#{kubernetes_service_template.ca_pem}\",\"token\":\"#{kubernetes_service_template.token}\"}")
       end
     end
 
     it 'migrates the KubernetesService to Platform::Kubernetes without template' do
-      expect { migrate! }.to change { Clusters::Cluster.count }.by(sample_num)
+      expect { migrate! }.to change { MigrateKubernetesServiceToNewClustersArchitectures::Cluster.count }.by(sample_num)
 
       projects.each do |project|
         project.clusters.last.tap do |cluster|
           expect(cluster.platform_kubernetes.api_url).to eq(project.kubernetes_service.api_url)
-          expect(cluster.platform_kubernetes.ca_pem).to eq(project.kubernetes_service.ca_pem)
+          expect(cluster.platform_kubernetes.ca_cert).to eq(project.kubernetes_service.ca_pem)
           expect(cluster.platform_kubernetes.token).to eq(project.kubernetes_service.token)
           expect(project.kubernetes_service).not_to be_active
         end
@@ -78,21 +87,32 @@ describe MigrateKubernetesServiceToNewClustersArchitectures, :migration do
   end
 
   context 'when managed KubernetesService exists' do
-    let(:project) { create(:project) }
-    let(:cluster) { create(:cluster, :provided_by_gcp, projects: [project]) }
-    let!(:platform_kubernetes) { cluster.platform_kubernetes }
+    let(:project) { MigrateKubernetesServiceToNewClustersArchitectures::Project.create! }
+
+    let(:cluster) do
+      MigrateKubernetesServiceToNewClustersArchitectures::Cluster.create!(
+      projects: [project],
+      name: 'sample-cluster',
+      platform_type: :kubernetes,
+      provider_type: :user,
+      platform_kubernetes_attributes: {
+        api_url: 'https://sample.kubernetes.com',
+        ca_cert: 'ca_pem-sample',
+        token: 'token-sample'
+      } )
+    end
 
     let!(:kubernetes_service) do
-      create(:kubernetes_service,
+      MigrateKubernetesServiceToNewClustersArchitectures::Service.create!(
         project: project,
         active: cluster.enabled,
-             api_url: platform_kubernetes.api_url,
-             token: platform_kubernetes.token,
-             ca_pem: platform_kubernetes.ca_cert)
+        category: 'deployment',
+        type: 'KubernetesService',
+        properties: "{\"api_url\":\"#{cluster.platform_kubernetes.api_url}\"}")
     end
 
     it 'does not migrate the KubernetesService and disables the kubernetes_service' do # Because the corresponding Platform::Kubernetes already exists
-      expect { migrate! }.not_to change { Clusters::Cluster.count }
+      expect { migrate! }.not_to change { MigrateKubernetesServiceToNewClustersArchitectures::Cluster.count }
 
       kubernetes_service.reload
       expect(kubernetes_service).not_to be_active
@@ -100,18 +120,39 @@ describe MigrateKubernetesServiceToNewClustersArchitectures, :migration do
   end
 
   context 'when production cluster has already been existed' do # i.e. There are no environment_scope conflicts
-    let(:project) { create(:project) }
-    let!(:cluster) { create(:cluster, :provided_by_gcp, environment_scope: 'production/*', projects: [project]) }
-    let!(:kubernetes_service) { create(:kubernetes_service, api_url: 'https://debug.kube.com', active: true, project: project) }
+    let(:project) { MigrateKubernetesServiceToNewClustersArchitectures::Project.create! }
+
+    let(:cluster) do
+      MigrateKubernetesServiceToNewClustersArchitectures::Cluster.create!(
+        projects: [project],
+        name: 'sample-cluster',
+        platform_type: :kubernetes,
+        provider_type: :user,
+        environment_scope: 'production/*',
+        platform_kubernetes_attributes: {
+          api_url: 'https://sample.kubernetes.com',
+          ca_cert: 'ca_pem-sample',
+          token: 'token-sample'
+        } )
+    end
+
+    let!(:kubernetes_service) do
+      MigrateKubernetesServiceToNewClustersArchitectures::Service.create!(
+        project: project,
+        active: true,
+        category: 'deployment',
+        type: 'KubernetesService',
+        properties: "{\"api_url\":\"https://debug.kube.com\"}")
+    end
 
     it 'migrates the KubernetesService to Platform::Kubernetes' do
-      expect { migrate! }.to change { Clusters::Cluster.count }.by(1)
+      expect { migrate! }.to change { MigrateKubernetesServiceToNewClustersArchitectures::Cluster.count }.by(1)
 
       kubernetes_service.reload
       project.clusters.last.tap do |cluster|
         expect(cluster.environment_scope).to eq('*')
         expect(cluster.platform_kubernetes.api_url).to eq(kubernetes_service.api_url)
-        expect(cluster.platform_kubernetes.ca_pem).to eq(kubernetes_service.ca_pem)
+        expect(cluster.platform_kubernetes.ca_cert).to eq(kubernetes_service.ca_pem)
         expect(cluster.platform_kubernetes.token).to eq(kubernetes_service.token)
         expect(kubernetes_service).not_to be_active
       end
@@ -119,18 +160,39 @@ describe MigrateKubernetesServiceToNewClustersArchitectures, :migration do
   end
 
   context 'when default cluster has already been existed' do
-    let(:project) { create(:project) }
-    let!(:cluster) { create(:cluster, :provided_by_gcp, environment_scope: '*', projects: [project]) }
-    let!(:kubernetes_service) { create(:kubernetes_service, api_url: 'https://debug.kube.com', active: true, project: project) }
+    let(:project) { MigrateKubernetesServiceToNewClustersArchitectures::Project.create! }
+
+    let!(:cluster) do
+      MigrateKubernetesServiceToNewClustersArchitectures::Cluster.create!(
+        projects: [project],
+        name: 'sample-cluster',
+        platform_type: :kubernetes,
+        provider_type: :user,
+        environment_scope: '*',
+        platform_kubernetes_attributes: {
+          api_url: 'https://sample.kubernetes.com',
+          ca_cert: 'ca_pem-sample',
+          token: 'token-sample'
+        } )
+    end
+
+    let!(:kubernetes_service) do
+      MigrateKubernetesServiceToNewClustersArchitectures::Service.create!(
+        project: project,
+        active: true,
+        category: 'deployment',
+        type: 'KubernetesService',
+        properties: "{\"api_url\":\"https://debug.kube.com\"}")
+    end
 
     it 'migrates the KubernetesService to Platform::Kubernetes with dedicated environment_scope' do # Because environment_scope is duplicated
-      expect { migrate! }.to change { Clusters::Cluster.count }.by(1)
+      expect { migrate! }.to change { MigrateKubernetesServiceToNewClustersArchitectures::Cluster.count }.by(1)
 
       kubernetes_service.reload
       project.clusters.last.tap do |cluster|
         expect(cluster.environment_scope).to eq('migrated/*')
         expect(cluster.platform_kubernetes.api_url).to eq(kubernetes_service.api_url)
-        expect(cluster.platform_kubernetes.ca_pem).to eq(kubernetes_service.ca_pem)
+        expect(cluster.platform_kubernetes.ca_cert).to eq(kubernetes_service.ca_pem)
         expect(cluster.platform_kubernetes.token).to eq(kubernetes_service.token)
         expect(kubernetes_service).not_to be_active
       end
@@ -138,19 +200,53 @@ describe MigrateKubernetesServiceToNewClustersArchitectures, :migration do
   end
 
   context 'when default cluster and migrated cluster has already been existed' do
-    let(:project) { create(:project) }
-    let!(:cluster) { create(:cluster, :provided_by_gcp, environment_scope: '*', projects: [project]) }
-    let!(:migrated_cluster) { create(:cluster, :provided_by_gcp, environment_scope: 'migrated/*', projects: [project]) }
-    let!(:kubernetes_service) { create(:kubernetes_service, api_url: 'https://debug.kube.com', active: true, project: project) }
+    let(:project) { MigrateKubernetesServiceToNewClustersArchitectures::Project.create! }
+
+    let!(:cluster) do
+      MigrateKubernetesServiceToNewClustersArchitectures::Cluster.create!(
+        projects: [project],
+        name: 'sample-cluster',
+        platform_type: :kubernetes,
+        provider_type: :user,
+        environment_scope: '*',
+        platform_kubernetes_attributes: {
+          api_url: 'https://sample.kubernetes.com',
+          ca_cert: 'ca_pem-sample',
+          token: 'token-sample'
+        } )
+    end
+
+    let!(:migrated_cluster) do
+      MigrateKubernetesServiceToNewClustersArchitectures::Cluster.create!(
+        projects: [project],
+        name: 'sample-cluster',
+        platform_type: :kubernetes,
+        provider_type: :user,
+        environment_scope: 'migrated/*',
+        platform_kubernetes_attributes: {
+          api_url: 'https://sample.kubernetes.com',
+          ca_cert: 'ca_pem-sample',
+          token: 'token-sample'
+        } )
+    end
+
+    let!(:kubernetes_service) do
+      MigrateKubernetesServiceToNewClustersArchitectures::Service.create!(
+        project: project,
+        active: true,
+        category: 'deployment',
+        type: 'KubernetesService',
+        properties: "{\"api_url\":\"https://debug.kube.com\"}")
+    end
 
     it 'migrates the KubernetesService to Platform::Kubernetes with dedicated environment_scope' do # Because environment_scope is duplicated
-      expect { migrate! }.to change { Clusters::Cluster.count }.by(1)
+      expect { migrate! }.to change { MigrateKubernetesServiceToNewClustersArchitectures::Cluster.count }.by(1)
 
       kubernetes_service.reload
       project.clusters.last.tap do |cluster|
         expect(cluster.environment_scope).to eq('migrated0/*')
         expect(cluster.platform_kubernetes.api_url).to eq(kubernetes_service.api_url)
-        expect(cluster.platform_kubernetes.ca_pem).to eq(kubernetes_service.ca_pem)
+        expect(cluster.platform_kubernetes.ca_cert).to eq(kubernetes_service.ca_pem)
         expect(cluster.platform_kubernetes.token).to eq(kubernetes_service.token)
         expect(kubernetes_service).not_to be_active
       end
@@ -158,17 +254,19 @@ describe MigrateKubernetesServiceToNewClustersArchitectures, :migration do
   end
 
   context 'when KubernetesService has nullified parameters' do
-    let(:project) { create(:project) }
+    let(:project) { MigrateKubernetesServiceToNewClustersArchitectures::Project.create! }
 
     before do
-      ActiveRecord::Base.connection.execute <<~SQL
-        INSERT INTO services (project_id, active, category, type, properties)
-        VALUES (#{project.id}, false, 'deployment', 'KubernetesService', '{}');
-      SQL
+      MigrateKubernetesServiceToNewClustersArchitectures::Service.create!(
+        project: project,
+        active: false,
+        category: 'deployment',
+        type: 'KubernetesService',
+        properties: "{}")
     end
 
     it 'does not migrate the KubernetesService and disables the kubernetes_service' do
-      expect { migrate! }.not_to change { Clusters::Cluster.count }
+      expect { migrate! }.not_to change { MigrateKubernetesServiceToNewClustersArchitectures::Cluster.count }
 
       expect(project.kubernetes_service).not_to be_active
     end
@@ -179,23 +277,25 @@ describe MigrateKubernetesServiceToNewClustersArchitectures, :migration do
   # However, in this migration file, there are no validations because of the re-defined model class
   # therefore, we should safely add this raw to Platform::Kubernetes
   context 'when KubernetesService has empty token' do
-    let(:project) { create(:project) }
+    let(:project) { MigrateKubernetesServiceToNewClustersArchitectures::Project.create! }
 
     before do
-      ActiveRecord::Base.connection.execute <<~SQL
-        INSERT INTO services (project_id, active, category, type, properties)
-        VALUES (#{project.id}, false, 'deployment', 'KubernetesService', '{"namespace":"prod","api_url":"http://111.111.111.111","ca_pem":"a","token":""}');
-      SQL
+      MigrateKubernetesServiceToNewClustersArchitectures::Service.create!(
+        project: project,
+        active: false,
+        category: 'deployment',
+        type: 'KubernetesService',
+        properties: "{\"namespace\":\"prod\",\"api_url\":\"http://111.111.111.111\",\"ca_pem\":\"a\",\"token\":\"\"}")
     end
 
     it 'does not migrate the KubernetesService and disables the kubernetes_service' do
-      expect { migrate! }.to change { Clusters::Cluster.count }.by(1)
+      expect { migrate! }.to change { MigrateKubernetesServiceToNewClustersArchitectures::Cluster.count }.by(1)
 
       project.clusters.last.tap do |cluster|
         expect(cluster.environment_scope).to eq('*')
         expect(cluster.platform_kubernetes.namespace).to eq('prod')
         expect(cluster.platform_kubernetes.api_url).to eq('http://111.111.111.111')
-        expect(cluster.platform_kubernetes.ca_pem).to eq('a')
+        expect(cluster.platform_kubernetes.ca_cert).to eq('a')
         expect(cluster.platform_kubernetes.token).to be_empty
         expect(project.kubernetes_service).not_to be_active
       end
@@ -203,10 +303,10 @@ describe MigrateKubernetesServiceToNewClustersArchitectures, :migration do
   end
 
   context 'when KubernetesService does not exist' do
-    let!(:project) { create(:project) }
+    let!(:project) { MigrateKubernetesServiceToNewClustersArchitectures::Project.create! }
 
     it 'does not migrate the KubernetesService' do
-      expect { migrate! }.not_to change { Clusters::Cluster.count }
+      expect { migrate! }.not_to change { MigrateKubernetesServiceToNewClustersArchitectures::Cluster.count }
     end
   end
 end