variables.tf

variable "create_cluster" {
  description = "Whether cluster should be created (it affects almost all resources)"
  type        = bool
  default     = true
}

variable "create_security_group" {
  description = "Whether to create security group for RDS cluster"
  type        = bool
  default     = true
}

variable "name" {
  description = "Name used across resources created"
  type        = string
  default     = ""
}

variable "subnets" {
  description = "List of subnet IDs used by database subnet group created"
  type        = list(string)
  default     = []
}

variable "replica_count" {
  description = "Number of reader nodes to create.  If `replica_scale_enable` is `true`, the value of `replica_scale_min` is used instead."
  type        = number
  default     = 1
}

variable "allowed_security_groups" {
  description = "A list of Security Group ID's to allow access to"
  type        = list(string)
  default     = []
}

variable "allowed_cidr_blocks" {
  description = "A list of CIDR blocks which are allowed to access the database"
  type        = list(string)
  default     = []
}

variable "vpc_id" {
  description = "VPC ID"
  type        = string
  default     = ""
}

variable "instance_type_replica" {
  description = "Instance type to use at replica instance"
  type        = string
  default     = null
}

variable "instance_type" {
  description = "Instance type to use at master instance. If instance_type_replica is not set it will use the same type for replica instances"
  type        = string
  default     = ""
}

variable "publicly_accessible" {
  description = "Whether the DB should have a public IP address"
  type        = bool
  default     = false
}

variable "database_name" {
  description = "Name for an automatically created database on cluster creation"
  type        = string
  default     = ""
}

variable "username" {
  description = "Master DB username"
  type        = string
  default     = "root"
}

variable "create_random_password" {
  description = "Whether to create random password for RDS primary cluster"
  type        = bool
  default     = true
}

variable "password" {
  description = "Master DB password. Note - when specifying a value here, 'create_random_password' should be set to `false`"
  type        = string
  default     = ""
}

variable "is_primary_cluster" {
  description = "Whether to create a primary cluster (set to false to be a part of a Global database)"
  type        = bool
  default     = true
}

variable "final_snapshot_identifier_prefix" {
  description = "The prefix name to use when creating a final snapshot on cluster destroy, appends a random 8 digits to name to ensure it's unique too."
  type        = string
  default     = "final"
}

variable "skip_final_snapshot" {
  description = "Determines whether a final DB snapshot is created before the DB cluster is deleted. If true is specified, no DB snapshot is created."
  type        = bool
  default     = false
}

variable "deletion_protection" {
  description = "If the DB instance should have deletion protection enabled"
  type        = bool
  default     = false
}

variable "backup_retention_period" {
  description = "How long to keep backups for (in days)"
  type        = number
  default     = 7
}

variable "preferred_backup_window" {
  description = "When to perform DB backups"
  type        = string
  default     = "02:00-03:00"
}

variable "preferred_maintenance_window" {
  description = "When to perform DB maintenance"
  type        = string
  default     = "sun:05:00-sun:06:00"
}

variable "port" {
  description = "The port on which to accept connections"
  type        = string
  default     = ""
}

variable "apply_immediately" {
  description = "Determines whether or not any DB modifications are applied immediately, or during the maintenance window"
  type        = bool
  default     = false
}

variable "monitoring_interval" {
  description = "The interval (seconds) between points when Enhanced Monitoring metrics are collected"
  type        = number
  default     = 0
}

variable "allow_major_version_upgrade" {
  description = "Determines whether major engine upgrades are allowed when changing engine version"
  type        = bool
  default     = false
}

variable "auto_minor_version_upgrade" {
  description = "Determines whether minor engine upgrades will be performed automatically in the maintenance window"
  type        = bool
  default     = true
}

variable "db_parameter_group_name" {
  description = "The name of a DB parameter group to use"
  type        = string
  default     = null
}

variable "db_cluster_parameter_group_name" {
  description = "The name of a DB Cluster parameter group to use"
  type        = string
  default     = null
}

variable "scaling_configuration" {
  description = "Map of nested attributes with scaling properties. Only valid when engine_mode is set to `serverless`"
  type        = map(string)
  default     = {}
}

variable "snapshot_identifier" {
  description = "DB snapshot to create this database from"
  type        = string
  default     = null
}

variable "storage_encrypted" {
  description = "Specifies whether the underlying storage layer should be encrypted"
  type        = bool
  default     = true
}

variable "kms_key_id" {
  description = "The ARN for the KMS encryption key if one is set to the cluster"
  type        = string
  default     = ""
}

variable "engine" {
  description = "Aurora database engine type, currently aurora, aurora-mysql or aurora-postgresql"
  type        = string
  default     = "aurora"
}

variable "engine_version" {
  description = "Aurora database engine version"
  type        = string
  default     = "5.6.10a"
}

variable "enable_http_endpoint" {
  description = "Whether or not to enable the Data API for a serverless Aurora database engine"
  type        = bool
  default     = false
}

variable "replica_scale_enabled" {
  description = "Whether to enable autoscaling for RDS Aurora (MySQL) read replicas"
  type        = bool
  default     = false
}

variable "replica_scale_max" {
  description = "Maximum number of read replicas permitted when autoscaling is enabled"
  type        = number
  default     = 0
}

variable "replica_scale_min" {
  description = "Minimum number of read replicas permitted when autoscaling is enabled"
  type        = number
  default     = 2
}

variable "replica_scale_cpu" {
  description = "CPU threshold which will initiate autoscaling"
  type        = number
  default     = 70
}

variable "replica_scale_connections" {
  description = "Average number of connections threshold which will initiate autoscaling. Default value is 70% of db.r4.large's default max_connections"
  type        = number
  default     = 700
}

variable "replica_scale_in_cooldown" {
  description = "Cooldown in seconds before allowing further scaling operations after a scale in"
  type        = number
  default     = 300
}

variable "replica_scale_out_cooldown" {
  description = "Cooldown in seconds before allowing further scaling operations after a scale out"
  type        = number
  default     = 300
}

variable "tags" {
  description = "A map of tags to add to all resources."
  type        = map(string)
  default     = {}
}

variable "cluster_tags" {
  description = "A map of tags to add to only the RDS cluster. Used for AWS Instance Scheduler tagging"
  type        = map(string)
  default     = {}
}

variable "security_group_tags" {
  description = "Additional tags for the security group"
  type        = map(string)
  default     = {}
}

variable "performance_insights_enabled" {
  description = "Specifies whether Performance Insights is enabled or not"
  type        = bool
  default     = false
}

variable "performance_insights_kms_key_id" {
  description = "The ARN for the KMS key to encrypt Performance Insights data"
  type        = string
  default     = ""
}

variable "iam_database_authentication_enabled" {
  description = "Specifies whether IAM Database authentication should be enabled or not. Not all versions and instances are supported. Refer to the AWS documentation to see which versions are supported"
  type        = bool
  default     = false
}

variable "enabled_cloudwatch_logs_exports" {
  description = "List of log types to export to cloudwatch - `audit`, `error`, `general`, `slowquery`, `postgresql`"
  type        = list(string)
  default     = []
}

variable "global_cluster_identifier" {
  description = "The global cluster identifier specified on aws_rds_global_cluster"
  type        = string
  default     = ""
}

variable "engine_mode" {
  description = "The database engine mode. Valid values: global, parallelquery, provisioned, serverless, multimaster"
  type        = string
  default     = "provisioned"
}

variable "replication_source_identifier" {
  description = "ARN of a source DB cluster or DB instance if this DB cluster is to be created as a Read Replica"
  type        = string
  default     = ""
}

variable "source_region" {
  description = "The source region for an encrypted replica DB cluster"
  type        = string
  default     = ""
}

variable "vpc_security_group_ids" {
  description = "List of VPC security groups to associate to the cluster in addition to the SG we create in this module"
  type        = list(string)
  default     = []
}

variable "db_subnet_group_name" {
  description = "The existing subnet group name to use"
  type        = string
  default     = ""
}

variable "predefined_metric_type" {
  description = "The metric type to scale on. Valid values are RDSReaderAverageCPUUtilization and RDSReaderAverageDatabaseConnections"
  type        = string
  default     = "RDSReaderAverageCPUUtilization"
}

variable "backtrack_window" {
  description = "The target backtrack window, in seconds. Only available for aurora engine currently. To disable backtracking, set this value to 0. Must be between 0 and 259200 (72 hours)"
  type        = number
  default     = 0
}

variable "copy_tags_to_snapshot" {
  description = "Copy all Cluster tags to snapshots"
  type        = bool
  default     = false
}

variable "iam_roles" {
  description = "A List of ARNs for the IAM roles to associate to the RDS Cluster"
  type        = list(string)
  default     = []
}

variable "security_group_description" {
  description = "The description of the security group. If value is set to empty string it will contain cluster name in the description"
  type        = string
  default     = "Managed by Terraform"
}

variable "ca_cert_identifier" {
  description = "The identifier of the CA certificate for the DB instance"
  type        = string
  default     = "rds-ca-2019"
}

variable "instances_parameters" {
  description = "Customized instance settings. Supported keys: `instance_name`, `instance_type`, `instance_promotion_tier`, `publicly_accessible`"
  type        = list(map(string))
  default     = []
}

variable "s3_import" {
  description = "Configuration map used to restore from a Percona Xtrabackup in S3 (only MySQL is supported)"
  type        = map(string)
  default     = null
}

# Enhanced monitoring role
variable "create_monitoring_role" {
  description = "Whether to create the IAM role for RDS enhanced monitoring"
  type        = bool
  default     = true
}

variable "monitoring_role_arn" {
  description = "IAM role used by RDS to send enhanced monitoring metrics to CloudWatch"
  type        = string
  default     = ""
}

variable "iam_role_name" {
  description = "Friendly name of the role"
  type        = string
  default     = null
}

variable "iam_role_use_name_prefix" {
  description = "Whether to use `iam_role_name` as is or create a unique name beginning with the `iam_role_name` as the prefix"
  type        = bool
  default     = false
}

variable "iam_role_description" {
  description = "Description of the role"
  type        = string
  default     = null
}

variable "iam_role_path" {
  description = "Path to the role"
  type        = string
  default     = null
}

variable "iam_role_managed_policy_arns" {
  description = "Set of exclusive IAM managed policy ARNs to attach to the IAM role"
  type        = list(string)
  default     = null
}

variable "iam_role_permissions_boundary" {
  description = "The ARN of the policy that is used to set the permissions boundary for the role"
  type        = string
  default     = null
}

variable "iam_role_force_detach_policies" {
  description = "Whether to force detaching any policies the role has before destroying it"
  type        = bool
  default     = null
}

variable "iam_role_max_session_duration" {
  description = "Maximum session duration (in seconds) that you want to set for the role"
  type        = number
  default     = null
}