feat: Fogg template for k8s (#873)

* feat: Fogg template for k8s

* Added an example and renamed cluster_name to cluster_component_name

config/v2/config.go

@@ -253,7 +253,8 @@ type TfeProvider struct {
 }
 
 type KubernetesProvider struct {
-	CommonProvider `yaml:",inline"`
+	CommonProvider       `yaml:",inline"`
+	ClusterComponentName *string `yaml:"cluster_component_name,omitempty"`
 }
 
 type HelmProvider struct {

config/v2/resolvers.go

@@ -586,6 +586,7 @@ func ResolveKubernetesProvider(commons ...Common) *KubernetesProvider {
 			p.CustomProvider = defaultEnabled(false)
 		}
 	}
+	clusterComponentName := lastNonNil(KubernetesProviderClusterComponentNameGetter, commons...)
 	var version *string
 	var enabled *bool
 
@@ -605,6 +606,7 @@ func ResolveKubernetesProvider(commons ...Common) *KubernetesProvider {
 
 	if version != nil {
 		return &KubernetesProvider{
+			ClusterComponentName: clusterComponentName,
 			CommonProvider: CommonProvider{
 				CustomProvider: lastNonNilBool(KubernetesProviderCustomProviderGetter, commons...),
 				Enabled:        enabled,
@@ -1238,3 +1240,10 @@ func DependsOnComponentsGetter(comm Common) []string {
 	}
 	return comm.DependsOn.Components
 }
+
+func KubernetesProviderClusterComponentNameGetter(comm Common) *string {
+	if comm.Providers == nil || comm.Providers.Kubernetes == nil {
+		return nil
+	}
+	return comm.Providers.Kubernetes.ClusterComponentName
+}

plan/plan.go

@@ -272,7 +272,8 @@ type TfeProvider struct {
 }
 
 type KubernetesProvider struct {
-	CommonProvider `yaml:",inline"`
+	CommonProvider       `yaml:",inline"`
+	ClusterComponentName *string `yaml:"cluster_component_name,omitempty"`
 }
 
 type HelmProvider struct {
@@ -1078,6 +1079,7 @@ func resolveComponentCommon(commons ...v2.Common) ComponentCommon {
 			version = *k8sConfig.Version
 		}
 		k8sPlan = &KubernetesProvider{
+			ClusterComponentName: k8sConfig.ClusterComponentName,
 			CommonProvider: CommonProvider{
 				Version:        version,
 				Enabled:        k8sConfig.Enabled == nil || (k8sConfig.Enabled != nil && *k8sConfig.Enabled),

plan/plan_test.go

@@ -84,10 +84,14 @@ func TestPlanBasicV2Yaml(t *testing.T) {
 	r.NotNil(plan.Envs["staging"])
 
 	r.NotNil(plan.Envs["staging"].Components)
-	r.Len(plan.Envs["staging"].Components, 3)
+	r.Len(plan.Envs["staging"].Components, 4)
 
 	r.NotNil(plan.Envs["staging"])
 	r.NotNil(plan.Envs["staging"].Components["vpc"])
+	r.NotNil(plan.Envs["staging"].Components["k8s-comp"])
+	r.NotNil(plan.Envs["staging"].Components["k8s-comp"].ProviderConfiguration.Kubernetes)
+	r.NotNil(plan.Envs["staging"].Components["k8s-comp"].ProviderConfiguration.Kubernetes.ClusterComponentName)
+
 	logrus.Debugf("%#v\n", plan.Envs["staging"].Components["vpc"].ModuleSource)
 	r.NotNil(*plan.Envs["staging"].Components["vpc"].ModuleSource)
 	r.Equal("github.com/terraform-aws-modules/terraform-aws-vpc?ref=v1.30.0", *plan.Envs["staging"].Components["vpc"].ModuleSource)

templates/templates/common/kubernetes_provider.tmpl

@@ -0,0 +1,16 @@
+{{ define "kubernetes_provider" -}}
+{{ if .ClusterComponentName -}}
+  data "aws_eks_cluster" "cluster" {
+    name = data.terraform_remote_state.{{ .ClusterComponentName }}.outputs.cluster_id
+  }
+
+  data "aws_eks_cluster_auth" "cluster" {
+    name = data.terraform_remote_state.{{ .ClusterComponentName }}.outputs.cluster_id
+  }
+
+provider "kubernetes" {
+  host                   = data.aws_eks_cluster.cluster.endpoint
+  cluster_ca_certificate = base64decode(data.aws_eks_cluster.cluster.certificate_authority.0.data)
+  token                  = data.aws_eks_cluster_auth.cluster.token
+}
+{{ end }}{{ end }}

templates/templates/component/terraform/fogg.tf.tmpl

@@ -50,6 +50,10 @@
   {{ template "auth0_provider" .ProviderConfiguration.Auth0 }}
 {{ end }}{{ end }}
 
+{{- if .ProviderConfiguration.Kubernetes -}}{{- if not .ProviderConfiguration.Kubernetes.CustomProvider -}}
+  {{- template "kubernetes_provider" .ProviderConfiguration.Kubernetes -}}
+{{- end -}}{{- end -}}
+
 terraform {
   required_version = "={{ .TerraformVersion }}"
 

testdata/v2_full_yaml/fogg.yml

@@ -115,6 +115,12 @@ envs:
         extra_vars:
           foo: bar3
         module_source: github.com/terraform-aws-modules/terraform-aws-vpc?ref=v1.30.0
+      k8s-comp:
+        providers:
+          kubernetes:
+            enabled: true
+            cluster_component_name: comp1
+            version: 2.19.0
     extra_vars:
       foo: bar2
 modules:

testdata/v2_full_yaml/terraform/envs/staging/comp1/terragrunt.hcl

@@ -1,6 +1,7 @@
 dependencies {
   paths = [
     "../comp2",
+    "../k8s-comp",
     "../vpc",
     "../../../accounts/bar",
     "../../../accounts/foo",

testdata/v2_full_yaml/terraform/envs/staging/comp2/terragrunt.hcl

@@ -1,6 +1,7 @@
 dependencies {
   paths = [
     "../comp1",
+    "../k8s-comp",
     "../vpc",
     "../../../accounts/bar",
     "../../../accounts/foo",