refactor(terraform): streamline Helm installation and configuration

Consolidate Helm command logic into a local variable for clarity.
Remove redundant EKS data sources and use kubeconfig JSON directly.
Add providers.tf for managing provider versions. Remove versions.tf
to centralize version management. Enhance temporary file handling
and cleanup process for better resource management.

main.tf

@@ -1,12 +1,17 @@
-data "aws_eks_cluster_auth" "cluster" {
-  name = var.cluster_name
-}
 
-data "aws_eks_cluster" "cluster" {
-  name = var.cluster_name
+locals {
+  # Helm command configuration
+  helm_command = <<-EOT
+    helm upgrade --install ${var.release_name} ${var.repo_name}/${var.chart_name} \
+      --version ${var.chart_version} \
+      --namespace ${var.namespace} \
+      ${var.create_namespace ? "--create-namespace" : ""} \
+      -f $VALUES_FILE \
+      --debug
+  EOT
 }
 
-
+# Main resource for Helm installation
 resource "null_resource" "helm_install" {
   triggers = {
     chart_name          = var.chart_name
@@ -20,60 +25,35 @@ resource "null_resource" "helm_install" {
     command = <<-EOT
       echo "Starting Helm install process..."
       
-      # Create a temporary kubeconfig file
+      # Create temporary files
       export KUBECONFIG=$(mktemp)
-      echo "Created temporary KUBECONFIG file: $KUBECONFIG"
+      VALUES_FILE=$(mktemp)
+      echo "Created temporary files: KUBECONFIG=$KUBECONFIG, VALUES_FILE=$VALUES_FILE"
       
-      # Write the kubeconfig content
+      # Generate kubeconfig
       cat <<EOF > $KUBECONFIG
-      apiVersion: v1
-      kind: Config
-      clusters:
-      - cluster:
-          server: ${data.aws_eks_cluster.cluster.endpoint}
-          certificate-authority-data: ${data.aws_eks_cluster.cluster.certificate_authority[0].data}
-        name: kubernetes
-      contexts:
-      - context:
-          cluster: kubernetes
-          user: aws
-        name: aws
-      current-context: aws
-      users:
-      - name: aws
-        user:
-          token: ${data.aws_eks_cluster_auth.cluster.token}
+      ${var.kubeconfig_json}
       EOF
-      echo "Wrote kubeconfig content to $KUBECONFIG"
-      
-      # Create a temporary values file
-      VALUES_FILE=$(mktemp)
-      echo "Created temporary values file: $VALUES_FILE"
+      echo "Generated kubeconfig file"
       
-      # Write the values content
+      # Generate values file
       cat <<EOF > $VALUES_FILE
       ${jsonencode(var.set_values)}
       EOF
-      echo "Wrote values content to $VALUES_FILE"
+      echo "Generated values file"
       
-      # Run Helm command with the temporary kubeconfig and values file
-      echo "Running Helm command..."
+      # Execute Helm commands
+      echo "Executing Helm commands..."
       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" : ""} \
-        -f $VALUES_FILE \
-        --debug
+      ${local.helm_command}
       
       HELM_EXIT_CODE=$?
-      echo "Helm command exited with code: $HELM_EXIT_CODE"
+      echo "Helm command completed with exit code: $HELM_EXIT_CODE"
       
-      # Clean up the temporary files
-      rm $KUBECONFIG
-      rm $VALUES_FILE
-      echo "Removed temporary KUBECONFIG and values files"
+      # Cleanup
+      rm $KUBECONFIG $VALUES_FILE
+      echo "Cleaned up temporary files"
       
       exit $HELM_EXIT_CODE
     EOT

providers.tf

@@ -0,0 +1,10 @@
+terraform {
+  required_version = ">= 0.13.0"
+
+  required_providers {
+    null = {
+      source  = "hashicorp/null"
+      version = ">= 3.0.0"
+    }
+  }
+}

variables.tf

@@ -34,18 +34,19 @@ variable "repo_url" {
   description = "URL of the Helm repository"
 }
 
-variable "cluster_name" {
-  type        = string
-  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
 }
+
+variable "kubeconfig_json" {
+  description = "Kubeconfig JSON"
+  type        = string
+}