Add public-samples/benchmarks-website-27dn3k/infrastructure/terraform…

…/variables.tf

infrastructure/terraform/variables.tf

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+# Core Environment Variables
+variable "environment" {
+  type        = string
+  description = "Deployment environment (prod/staging)"
+  validation {
+    condition     = contains(["prod", "staging"], var.environment)
+    error_message = "Environment must be either prod or staging"
+  }
+}
+
+variable "project" {
+  type        = string
+  description = "Project name for resource tagging and identification"
+}
+
+variable "aws_region" {
+  type        = string
+  description = "AWS region for resource deployment"
+  default     = "us-west-2"
+  validation {
+    condition     = can(regex("^(us|eu|ap|sa|ca|me|af)-[a-z]+-\\d+$", var.aws_region))
+    error_message = "AWS region must be a valid region identifier"
+  }
+}
+
+# Networking Configuration
+variable "vpc_cidr" {
+  type        = string
+  description = "CIDR block for VPC"
+  default     = "10.0.0.0/16"
+  validation {
+    condition     = can(cidrhost(var.vpc_cidr, 0))
+    error_message = "VPC CIDR must be a valid IPv4 CIDR block"
+  }
+}
+
+variable "availability_zones" {
+  type        = list(string)
+  description = "List of AWS availability zones for high availability deployment"
+  validation {
+    condition     = length(var.availability_zones) >= 2
+    error_message = "At least two availability zones must be specified for HA"
+  }
+}
+
+# Database Configuration
+variable "db_instance_class" {
+  type        = string
+  description = "RDS instance type for PostgreSQL database"
+  default     = "db.t3.medium"
+  validation {
+    condition     = can(regex("^db\\.[a-z0-9]+\\.[a-z0-9]+$", var.db_instance_class))
+    error_message = "DB instance class must be a valid RDS instance type"
+  }
+}
+
+# Cache Configuration
+variable "redis_node_type" {
+  type        = string
+  description = "ElastiCache Redis node type"
+  default     = "cache.t3.medium"
+  validation {
+    condition     = can(regex("^cache\\.[a-z0-9]+\\.[a-z0-9]+$", var.redis_node_type))
+    error_message = "Redis node type must be a valid ElastiCache instance type"
+  }
+}
+
+# Domain Configuration
+variable "domain_name" {
+  type        = string
+  description = "Domain name for Route53 and ACM certificate"
+  sensitive   = true
+}
+
+# Container Configuration
+variable "ecs_container_memory" {
+  type        = number
+  description = "Memory allocation for ECS tasks in MB"
+  default     = 2048
+  validation {
+    condition     = var.ecs_container_memory >= 512 && var.ecs_container_memory <= 8192
+    error_message = "ECS container memory must be between 512 and 8192 MB"
+  }
+}
+
+variable "ecs_container_cpu" {
+  type        = number
+  description = "CPU allocation for ECS tasks in units (1024 = 1 vCPU)"
+  default     = 512
+  validation {
+    condition     = var.ecs_container_cpu >= 256 && var.ecs_container_cpu <= 4096
+    error_message = "ECS container CPU must be between 256 and 4096 units"
+  }
+}
+
+# Backup Configuration
+variable "backup_retention_period" {
+  type        = number
+  description = "Number of days to retain RDS backups"
+  default     = 7
+  validation {
+    condition     = var.backup_retention_period >= 7
+    error_message = "Backup retention period must be at least 7 days"
+  }
+}
+
+# High Availability Configuration
+variable "multi_az" {
+  type        = bool
+  description = "Enable Multi-AZ deployment for RDS"
+  default     = true
+}
+
+# Tagging Configuration
+variable "environment_tags" {
+  type        = map(string)
+  description = "Environment-specific resource tags"
+  default     = {}
+}