Add public-samples/benchmarks-website---replit-yxxvno/infrastructure/…

…terraform/environments/staging/main.tf

infrastructure/terraform/environments/staging/main.tf

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+# Terraform configuration for staging environment
+# AWS Provider version: ~> 4.0
+terraform {
+  required_providers {
+    aws = {
+      source  = "hashicorp/aws"
+      version = "~> 4.0"
+    }
+  }
+
+  backend "s3" {
+    encrypt = true
+    # Backend configuration should be provided via backend config file
+  }
+}
+
+# Configure AWS Provider with staging-specific tags
+provider "aws" {
+  region = var.region
+
+  default_tags {
+    tags = {
+      Environment        = "staging"
+      Project           = "saas-metrics-platform"
+      ManagedBy         = "terraform"
+      CostCenter        = "development"
+      DataClassification = "test"
+      LastUpdated       = timestamp()
+    }
+  }
+}
+
+# Root module configuration for staging environment
+module "root" {
+  source = "../.."
+
+  environment = "staging"
+  region     = var.region
+
+  # Database configuration optimized for staging
+  database_config = {
+    instance_class           = "db.t3.medium"
+    allocated_storage       = 20
+    max_connections        = 100
+    engine_version         = "14.6"
+    backup_retention_period = 7
+    multi_az               = false
+    deletion_protection    = false
+    skip_final_snapshot    = true
+    performance_insights_enabled = true
+    monitoring_interval    = 60
+  }
+
+  # Redis cache configuration for staging
+  cache_config = {
+    node_type                  = "cache.t4g.medium"
+    num_cache_nodes           = 2
+    memory_size_mb           = 2048
+    parameter_group_family    = "redis6.x"
+    automatic_failover_enabled = false
+    snapshot_retention_limit  = 3
+    transit_encryption_enabled = true
+  }
+
+  # Monitoring configuration for staging environment
+  monitoring_config = {
+    enable_enhanced_monitoring = true
+    retention_in_days        = 30
+    alarm_evaluation_periods = 2
+    alarm_threshold_cpu     = 80
+    alarm_threshold_memory  = 85
+  }
+}
+
+# Output the database endpoint for application configuration
+output "database_endpoint" {
+  description = "PostgreSQL database endpoint for staging environment"
+  value = {
+    endpoint = module.root.database_endpoint
+    port     = 5432
+  }
+  sensitive = true
+}
+
+# Output the Redis endpoint for application configuration
+output "redis_endpoint" {
+  description = "Redis cache endpoint for staging environment"
+  value = {
+    endpoint = module.root.redis_endpoint
+    port     = 6379
+  }
+  sensitive = true
+}
+
+# Local variables for staging-specific configurations
+locals {
+  environment = "staging"
+  project_name = "saas-metrics-platform"
+
+  # Common tags for staging resources
+  common_tags = {
+    Environment     = local.environment
+    Project        = local.project_name
+    ManagedBy      = "terraform"
+    CostCenter     = "development"
+    SecurityLevel  = "medium"
+    BackupRequired = "true"
+  }
+}
+
+# Data source for availability zones
+data "aws_availability_zones" "available" {
+  state = "available"
+}