feat: add api_versions and kube_version to helm block

docs/data-sources/overlay.md

@@ -630,6 +630,8 @@ Must enable helm support via [kustomize_options](#kustomize_options---optional)
 - `values_file` specify a file with helm values to use for templating. Not specifying this uses the in-chart values file, if one exists.
 - `values_inline` specify helm values inline from terraform, as a string
 - `values_merge` merge strategy if both `values_file` and `values_inline` are specified. Can be one of `override`, `replace`, `merge`. (default: `override`)
+- `api_versions` List of Kubernetes api versions used for Capabilities.APIVersions.
+- `kube_version` Allows specifying a custom kubernetes version to use when templating.
 
 #### Example
 
@@ -642,6 +644,8 @@ data "kustomization_overlay" "minecraft" {
     release_name = "moria"
     include_crds = false
     skip_tests = false
+    kube_version = "1.29.0"
+    api_versions = ["monitoring.coreos.com/v1"]
     values_inline = <<VALUES
       minecraftServer:
         eula: true

kustomize/data_source_kustomization_overlay.go

@@ -505,6 +505,15 @@ func dataSourceKustomizationOverlay() *schema.Resource {
 							Type:     schema.TypeString,
 							Optional: true,
 						},
+						"api_versions": {
+							Type:     schema.TypeList,
+							Optional: true,
+							Elem:     &schema.Schema{Type: schema.TypeString},
+						},
+						"kube_version": {
+							Type:     schema.TypeString,
+							Optional: true,
+						},
 					},
 				},
 			},
@@ -1010,6 +1019,8 @@ func getKustomization(d *schema.ResourceData) (k types.Kustomization) {
 			hca.ValuesMerge = hc["values_merge"].(string)
 			hca.IncludeCRDs = hc["include_crds"].(bool)
 			hca.SkipTests = hc["skip_tests"].(bool)
+			hca.KubeVersion = hc["kube_version"].(string)
+			hca.ApiVersions = convertListInterfaceToListString(hc["api_versions"].([]interface{}))
 
 			hc_vi := make(map[string]interface{})
 			if err := yaml.Unmarshal([]byte(hc["values_inline"].(string)), &hc_vi); err != nil {

kustomize/data_source_kustomization_overlay_test.go

@@ -2,6 +2,7 @@ package kustomize
 
 import (
 	"fmt"
+	"os"
 	"regexp"
 	"testing"
 
@@ -1185,6 +1186,9 @@ func TestDataSourceKustomizationOverlay_helm_charts_attr(t *testing.T) {
 					resource.TestCheckResourceAttr("data.kustomization_overlay.test", "ids.#", "3"),
 					resource.TestCheckResourceAttr("data.kustomization_overlay.test", "ids_prio.#", "3"),
 					resource.TestCheckResourceAttr("data.kustomization_overlay.test", "manifests.%", "3"),
+					resource.TestCheckResourceAttr("data.kustomization_overlay.test", "helm_charts.0.kube_version", "1.29.0"),
+					resource.TestCheckResourceAttr("data.kustomization_overlay.test", "helm_charts.0.api_versions.#", "1"),
+					resource.TestCheckResourceAttr("data.kustomization_overlay.test", "helm_charts.0.api_versions.0", "monitoring.coreos.com/v1"),
 				),
 			},
 		},
@@ -1203,6 +1207,8 @@ data "kustomization_overlay" "test" {
 		version = "0.0.1"
 		namespace = "not-used"
 		skip_tests = true
+		kube_version = "1.29.0"
+		api_versions = ["monitoring.coreos.com/v1"]
 	}
 
 	namespace = "test-basic"
@@ -1681,3 +1687,104 @@ output "rolebinding" {
 }
 `
 }
+
+// Test the capabilites helm chart without capabilities set
+func TestDataSourceKustomizationOverlay_helm_charts_capabilities_not_set(t *testing.T) {
+
+	resource.Test(t, resource.TestCase{
+		IsUnitTest: true,
+		Providers:  testAccProviders,
+		Steps: []resource.TestStep{
+			{
+				Config: testDataSourceKustomizationOverlayConfig_helm_charts_capabilities_not_set(),
+				Check: resource.ComposeAggregateTestCheckFunc(
+					// There should be only the default configmap in the manifests
+					resource.TestCheckOutput("default_configmap", "{\"apiVersion\":\"v1\",\"data\":{\"should\":\"always exist\"},\"kind\":\"ConfigMap\",\"metadata\":{\"labels\":{\"app\":\"my-release\",\"name\":\"my-release\"},\"name\":\"default-configmap\"}}"),
+					resource.TestCheckResourceAttr("data.kustomization_overlay.test", "manifests.%", "1"),
+				),
+			},
+		},
+	})
+}
+
+func testDataSourceKustomizationOverlayConfig_helm_charts_capabilities_not_set() string {
+	return `
+	data "kustomization_overlay" "test" {
+		helm_globals {
+			chart_home = "./test_kustomizations/helm/initial/charts/"
+		}
+	
+		helm_charts {
+			name = "test-capabilities"
+			version = "0.0.1"
+			release_name = "my-release"
+		}
+	
+		kustomize_options {
+			enable_helm = true
+			helm_path = "helm"
+		}
+	}
+	
+	output "default_configmap" {
+		value = data.kustomization_overlay.test.manifests["_/ConfigMap/_/default-configmap"]
+	}`
+}
+
+// Test the capabilites helm chart without capabilities set
+func TestDataSourceKustomizationOverlay_helm_charts_capabilities_set(t *testing.T) {
+
+	foo := os.Environ()
+	_ = foo
+
+	resource.Test(t, resource.TestCase{
+		IsUnitTest: true,
+		Providers:  testAccProviders,
+		Steps: []resource.TestStep{
+			{
+				Config: testDataSourceKustomizationOverlayConfig_helm_charts_capabilities_set(),
+				Check: resource.ComposeAggregateTestCheckFunc(
+					// There should be only the default configmap in the manifests
+					resource.TestCheckOutput("default_configmap", "{\"apiVersion\":\"v1\",\"data\":{\"should\":\"always exist\"},\"kind\":\"ConfigMap\",\"metadata\":{\"labels\":{\"app\":\"my-release\",\"name\":\"my-release\"},\"name\":\"default-configmap\"}}"),
+					resource.TestCheckResourceAttr("data.kustomization_overlay.test", "manifests.%", "3"),
+
+					// Check conditional configmaps exists
+					resource.TestCheckOutput("kubeversion_configmap", "{\"apiVersion\":\"v1\",\"data\":{\"should\":\"only when kubeversion is equals v1.42.0\"},\"kind\":\"ConfigMap\",\"metadata\":{\"labels\":{\"app\":\"my-release\",\"name\":\"my-release\"},\"name\":\"kubeversion-configmap\"}}"),
+					resource.TestCheckOutput("apiversions_configmap", "{\"apiVersion\":\"v1\",\"data\":{\"should\":\"only when a the fake apiVersion is set\"},\"kind\":\"ConfigMap\",\"metadata\":{\"labels\":{\"app\":\"my-release\",\"name\":\"my-release\"},\"name\":\"apiversions-configmap\"}}"),
+				),
+			},
+		},
+	})
+}
+
+func testDataSourceKustomizationOverlayConfig_helm_charts_capabilities_set() string {
+	return `
+	data "kustomization_overlay" "test" {
+		helm_globals {
+			chart_home = "./test_kustomizations/helm/initial/charts/"
+		}
+	
+		helm_charts {
+			name = "test-capabilities"
+			version = "0.0.1"
+			release_name = "my-release"
+			kube_version = "v1.42.0"
+			api_versions = ["foo.bar/v1"]
+		}
+	
+		kustomize_options {
+			enable_helm = true
+			helm_path = "helm"
+		}
+	}
+	
+	output "default_configmap" {
+		value = data.kustomization_overlay.test.manifests["_/ConfigMap/_/default-configmap"]
+	}
+	output "kubeversion_configmap" {
+		value = data.kustomization_overlay.test.manifests["_/ConfigMap/_/kubeversion-configmap"]
+	}
+	output "apiversions_configmap" {
+		value = data.kustomization_overlay.test.manifests["_/ConfigMap/_/apiversions-configmap"]
+	}`
+}

kustomize/test_kustomizations/helm/initial/charts/test-capabilities/Chart.yaml

@@ -0,0 +1,4 @@
+apiVersion: v2
+description: A Simple Helm chart to test capabilitie set by the user
+name: test-capabilities
+version: 0.0.1

kustomize/test_kustomizations/helm/initial/charts/test-capabilities/templates/_helpers.tpl

@@ -0,0 +1,6 @@
+{{/*
+Expand the name of the chart. Set the chart name to nginx by default
+*/}}
+{{- define "test-capabilities.name" -}}
+{{- .Release.Name | default "capabilities" }}
+{{- end }}

kustomize/test_kustomizations/helm/initial/charts/test-capabilities/templates/configmap.yaml

@@ -0,0 +1,34 @@
+---
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: default-configmap
+  labels:
+    app: {{ include "test-capabilities.name" . }}
+    name: {{ include "test-capabilities.name" . }}
+data:
+  should: "always exist" 
+---
+{{ if eq .Capabilities.KubeVersion.Version "v1.42.0" }}
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: kubeversion-configmap
+  labels:
+    app: {{ include "test-capabilities.name" . }}
+    name: {{ include "test-capabilities.name" . }}
+data:
+  should: "only when kubeversion is equals v1.42.0"
+{{- end }}
+---
+{{ if $.Capabilities.APIVersions.Has "foo.bar/v1" }}
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: apiversions-configmap
+  labels:
+    app: {{ include "test-capabilities.name" . }}
+    name: {{ include "test-capabilities.name" . }}
+data:
+  should: "only when a the fake apiVersion is set"
+{{- end }}