add trigger_helm_update var & add data block

README.md

@@ -65,6 +65,7 @@ This module is released under the MIT License. See the [LICENSE](./LICENSE) file
 
 | Name | Version |
 |------|---------|
+| <a name="provider_aws"></a> [aws](#provider\_aws) | n/a |
 | <a name="provider_null"></a> [null](#provider\_null) | n/a |
 
 ## Modules
@@ -76,22 +77,23 @@ No modules.
 | Name | Type |
 |------|------|
 | [null_resource.helm_install](https://registry.terraform.io/providers/hashicorp/null/latest/docs/resources/resource) | resource |
+| [aws_eks_cluster.cluster](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/eks_cluster) | data source |
+| [aws_eks_cluster_auth.cluster](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/eks_cluster_auth) | data source |
 
 ## Inputs
 
 | Name | Description | Type | Default | Required |
 |------|-------------|------|---------|:--------:|
 | <a name="input_chart_name"></a> [chart\_name](#input\_chart\_name) | Name of the chart | `string` | n/a | yes |
 | <a name="input_chart_version"></a> [chart\_version](#input\_chart\_version) | Version of the chart | `string` | n/a | yes |
-| <a name="input_cluster_ca_certificate"></a> [cluster\_ca\_certificate](#input\_cluster\_ca\_certificate) | CA certificate of the cluster | `string` | n/a | yes |
-| <a name="input_cluster_endpoint"></a> [cluster\_endpoint](#input\_cluster\_endpoint) | Endpoint of the cluster | `string` | n/a | yes |
+| <a name="input_cluster_name"></a> [cluster\_name](#input\_cluster\_name) | Name of the cluster | `string` | n/a | yes |
 | <a name="input_create_namespace"></a> [create\_namespace](#input\_create\_namespace) | Create the namespace if it does not exist. Defaults to false | `bool` | `false` | no |
 | <a name="input_namespace"></a> [namespace](#input\_namespace) | Namespace to install the chart | `string` | n/a | yes |
 | <a name="input_release_name"></a> [release\_name](#input\_release\_name) | Release name of the chart | `string` | n/a | yes |
 | <a name="input_repo_name"></a> [repo\_name](#input\_repo\_name) | Name of the Helm repository | `string` | n/a | yes |
 | <a name="input_repo_url"></a> [repo\_url](#input\_repo\_url) | URL of the Helm repository | `string` | n/a | yes |
 | <a name="input_set_values"></a> [set\_values](#input\_set\_values) | A map of values to pass to the Helm chart | `any` | `{}` | no |
-| <a name="input_token"></a> [token](#input\_token) | Token to authenticate with the cluster | `string` | n/a | yes |
+| <a name="input_trigger_helm_update"></a> [trigger\_helm\_update](#input\_trigger\_helm\_update) | Set this to true value trigger a Helm chart update | `bool` | `false` | no |
 
 ## Outputs
 

main.tf

@@ -1,27 +1,37 @@
+data "aws_eks_cluster_auth" "cluster" {
+  name = var.cluster_name
+}
+
+data "aws_eks_cluster" "cluster" {
+  name = var.cluster_name
+}
+
+
 resource "null_resource" "helm_install" {
   triggers = {
-    chart_name    = var.chart_name
-    chart_version = var.chart_version
-    release_name  = var.release_name
-    namespace     = var.namespace
+    chart_name     = var.chart_name
+    chart_version  = var.chart_version
+    release_name   = var.release_name
+    namespace      = var.namespace
+    update_trigger = var.trigger_helm_update != null ? timestamp() : "initial"
   }
 
   provisioner "local-exec" {
     command = <<-EOT
       echo "Starting Helm install process..."
 
       # Create a temporary kubeconfig file
-      KUBECONFIG_FILE=$(mktemp)
-      echo "Created temporary KUBECONFIG file: $KUBECONFIG_FILE"
+      export KUBECONFIG=$(mktemp)
+      echo "Created temporary KUBECONFIG file: $KUBECONFIG"
 
       # Write the kubeconfig content
-      cat <<EOF > $KUBECONFIG_FILE
+      cat <<EOF > $KUBECONFIG
       apiVersion: v1
       kind: Config
       clusters:
       - cluster:
-          server: ${var.cluster_endpoint}
-          certificate-authority-data: ${var.cluster_ca_certificate}
+          server: ${data.aws_eks_cluster.cluster.endpoint}
+          certificate-authority-data: ${data.aws_eks_cluster.cluster.certificate_authority[0].data}
         name: kubernetes
       contexts:
       - context:
@@ -32,9 +42,9 @@ resource "null_resource" "helm_install" {
       users:
       - name: aws
         user:
-          token: ${var.token}
+          token: ${data.aws_eks_cluster_auth.cluster.token}
       EOF
-      echo "Wrote kubeconfig content to $KUBECONFIG_FILE"
+      echo "Wrote kubeconfig content to $KUBECONFIG"
 
       # Create a temporary values file
       VALUES_FILE=$(mktemp)
@@ -48,9 +58,9 @@ resource "null_resource" "helm_install" {
 
       # Run Helm command with the temporary kubeconfig and values file
       echo "Running Helm command..."
-      KUBECONFIG=$KUBECONFIG_FILE helm repo add ${var.repo_name} ${var.repo_url}
-      KUBECONFIG=$KUBECONFIG_FILE helm repo update
-      KUBECONFIG=$KUBECONFIG_FILE helm upgrade --install ${var.release_name} ${var.repo_name}/${var.chart_name} \
+      helm repo add ${var.repo_name} ${var.repo_url}
+      helm repo update
+      helm upgrade --install ${var.release_name} ${var.repo_name}/${var.chart_name} \
         --version ${var.chart_version} \
         --namespace ${var.namespace} \
         ${var.create_namespace ? "--create-namespace" : ""} \
@@ -61,7 +71,7 @@ resource "null_resource" "helm_install" {
       echo "Helm command exited with code: $HELM_EXIT_CODE"
 
       # Clean up the temporary files
-      rm $KUBECONFIG_FILE
+      rm $KUBECONFIG
       rm $VALUES_FILE
       echo "Removed temporary KUBECONFIG and values files"
 

variables.tf

@@ -34,23 +34,18 @@ variable "repo_url" {
   description = "URL of the Helm repository"
 }
 
-variable "cluster_ca_certificate" {
+variable "cluster_name" {
   type        = string
-  description = "CA certificate of the cluster"
-}
-
-variable "cluster_endpoint" {
-  type        = string
-  description = "Endpoint of the cluster"
-}
-
-variable "token" {
-  type        = string
-  description = "Token to authenticate with the cluster"
+  description = "Name of the cluster"
 }
 
 variable "set_values" {
   type        = any
   description = "A map of values to pass to the Helm chart"
   default     = {}
-}
+}
+variable "trigger_helm_update" {
+  description = "Set this to true value trigger a Helm chart update"
+  type        = bool
+  default     = false
+}