Use GitLab's copy of Helm stable repo

As the Helm stable repo is going away soon, we use an archive for GitLab
instead.

app/models/clusters/applications/fluentd.rb

@@ -22,7 +22,11 @@ module Clusters
       validate :has_at_least_one_log_enabled?
 
       def chart
-        'stable/fluentd'
+        'fluentd/fluentd'
+      end
+
+      def repository
+        'https://gitlab-org.gitlab.io/cluster-integration/helm-stable-archive'
       end
 
       def install_command

app/models/clusters/applications/ingress.rb

@@ -46,7 +46,11 @@ module Clusters
       end
 
       def chart
-        'stable/nginx-ingress'
+        "#{name}/nginx-ingress"
+      end
+
+      def repository
+        'https://gitlab-org.gitlab.io/cluster-integration/helm-stable-archive'
       end
 
       def values
@@ -60,6 +64,7 @@ module Clusters
       def install_command
         Gitlab::Kubernetes::Helm::InstallCommand.new(
           name: name,
+          repository: repository,
           version: VERSION,
           rbac: cluster.platform_kubernetes_rbac?,
           chart: chart,

app/models/clusters/applications/prometheus.rb

@@ -51,7 +51,11 @@ module Clusters
       end
 
       def chart
-        'stable/prometheus'
+        "#{name}/prometheus"
+      end
+
+      def repository
+        'https://gitlab-org.gitlab.io/cluster-integration/helm-stable-archive'
       end
 
       def service_name
@@ -65,6 +69,7 @@ module Clusters
       def install_command
         Gitlab::Kubernetes::Helm::InstallCommand.new(
           name: name,
+          repository: repository,
           version: VERSION,
           rbac: cluster.platform_kubernetes_rbac?,
           chart: chart,
@@ -76,6 +81,7 @@ module Clusters
       def patch_command(values)
         ::Gitlab::Kubernetes::Helm::PatchCommand.new(
           name: name,
+          repository: repository,
           version: version,
           rbac: cluster.platform_kubernetes_rbac?,
           chart: chart,

changelogs/unreleased/use_mirror_of_helm_stable_repo.yml

+---
+title: "GitLab-managed apps: Use GitLab's repo as replacement for the Helm stable repo"
+merge_request: 44875
+author:
+type: other

spec/models/clusters/applications/fluentd_spec.rb

@@ -25,7 +25,7 @@ RSpec.describe Clusters::Applications::Fluentd do
 
     it 'is initialized with fluentd arguments' do
       expect(subject.name).to eq('fluentd')
-      expect(subject.chart).to eq('stable/fluentd')
+      expect(subject.chart).to eq('fluentd/fluentd')
       expect(subject.version).to eq('2.4.0')
       expect(subject).to be_rbac
     end

spec/models/clusters/applications/ingress_spec.rb

@@ -135,7 +135,7 @@ RSpec.describe Clusters::Applications::Ingress do
 
     it 'is initialized with ingress arguments' do
       expect(subject.name).to eq('ingress')
-      expect(subject.chart).to eq('stable/nginx-ingress')
+      expect(subject.chart).to eq('ingress/nginx-ingress')
       expect(subject.version).to eq('1.40.2')
       expect(subject).to be_rbac
       expect(subject.files).to eq(ingress.files)

spec/models/clusters/applications/prometheus_spec.rb

@@ -152,7 +152,7 @@ RSpec.describe Clusters::Applications::Prometheus do
 
     it 'is initialized with 3 arguments' do
       expect(subject.name).to eq('prometheus')
-      expect(subject.chart).to eq('stable/prometheus')
+      expect(subject.chart).to eq('prometheus/prometheus')
       expect(subject.version).to eq('10.4.1')
       expect(subject).to be_rbac
       expect(subject.files).to eq(prometheus.files)
@@ -240,7 +240,7 @@ RSpec.describe Clusters::Applications::Prometheus do
 
     it 'is initialized with 3 arguments' do
       expect(patch_command.name).to eq('prometheus')
-      expect(patch_command.chart).to eq('stable/prometheus')
+      expect(patch_command.chart).to eq('prometheus/prometheus')
       expect(patch_command.version).to eq('10.4.1')
       expect(patch_command.files).to eq(prometheus.files)
     end