variables.tf

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

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

################################################################################
# Random Password & Snapshot ID
################################################################################

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

variable "random_password_length" {
  description = "Length of random password to create. Defaults to `10`"
  type        = number
  default     = 10
}

################################################################################
# DB Subnet Group
################################################################################

variable "create_db_subnet_group" {
  description = "Determines whether to create the database subnet group or use existing"
  type        = bool
  default     = true
}

variable "db_subnet_group_name" {
  description = "The name of the subnet group name (existing or created)"
  type        = string
  default     = ""
}

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

variable "network_type" {
  description = "The type of network stack to use (IPV4 or DUAL)"
  type        = string
  default     = null
}

################################################################################
# Cluster
################################################################################

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

variable "is_primary_cluster" {
  description = "Determines whether cluster is primary cluster with writer instance (set to `false` for global cluster and replica clusters)"
  type        = bool
  default     = true
}

variable "cluster_use_name_prefix" {
  description = "Whether to use `name` as a prefix for the cluster"
  type        = bool
  default     = false
}

variable "allocated_storage" {
  description = "The amount of storage in gibibytes (GiB) to allocate to each DB instance in the Multi-AZ DB cluster. (This setting is required to create a Multi-AZ DB cluster)"
  type        = number
  default     = null
}

variable "allow_major_version_upgrade" {
  description = "Enable to allow major engine version upgrades when changing engine versions. Defaults to `false`"
  type        = bool
  default     = false
}

variable "apply_immediately" {
  description = "Specifies whether any cluster modifications are applied immediately, or during the next maintenance window. Default is `false`"
  type        = bool
  default     = null
}

variable "availability_zones" {
  description = "List of EC2 Availability Zones for the DB cluster storage where DB cluster instances can be created. RDS automatically assigns 3 AZs if less than 3 AZs are configured, which will show as a difference requiring resource recreation next Terraform apply"
  type        = list(string)
  default     = null
}

variable "backup_retention_period" {
  description = "The days to retain backups for. Default `7`"
  type        = number
  default     = 7
}

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     = null
}

variable "cluster_members" {
  description = "List of RDS Instances that are a part of this cluster"
  type        = list(string)
  default     = null
}

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

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

variable "db_cluster_instance_class" {
  description = "The compute and memory capacity of each DB instance in the Multi-AZ DB cluster, for example db.m6g.xlarge. Not all DB instance classes are available in all AWS Regions, or for all database engines"
  type        = string
  default     = null
}

variable "db_cluster_db_instance_parameter_group_name" {
  description = "Instance parameter group to associate with all instances of the DB cluster. The `db_cluster_db_instance_parameter_group_name` is only valid in combination with `allow_major_version_upgrade`"
  type        = string
  default     = null
}

variable "deletion_protection" {
  description = "If the DB instance should have deletion protection enabled. The database can't be deleted when this value is set to `true`. The default is `false`"
  type        = bool
  default     = null
}

variable "enable_global_write_forwarding" {
  description = "Whether cluster should forward writes to an associated global cluster. Applied to secondary clusters to enable them to forward writes to an `aws_rds_global_cluster`'s primary cluster"
  type        = bool
  default     = null
}

variable "enabled_cloudwatch_logs_exports" {
  description = "Set of log types to export to cloudwatch. If omitted, no logs will be exported. The following log types are supported: `audit`, `error`, `general`, `slowquery`, `postgresql`"
  type        = list(string)
  default     = []
}

variable "enable_http_endpoint" {
  description = "Enable HTTP endpoint (data API). Only valid when engine_mode is set to `serverless`"
  type        = bool
  default     = null
}

variable "engine" {
  description = "The name of the database engine to be used for this DB cluster. Defaults to `aurora`. Valid Values: `aurora`, `aurora-mysql`, `aurora-postgresql`"
  type        = string
  default     = null
}

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

variable "engine_version" {
  description = "The database engine version. Updating this argument results in an outage"
  type        = string
  default     = null
}

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

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

variable "iam_database_authentication_enabled" {
  description = "Specifies whether or mappings of AWS Identity and Access Management (IAM) accounts to database accounts is enabled"
  type        = bool
  default     = null
}

variable "iops" {
  description = "The amount of Provisioned IOPS (input/output operations per second) to be initially allocated for each DB instance in the Multi-AZ DB cluster"
  type        = number
  default     = null
}

variable "kms_key_id" {
  description = "The ARN for the KMS encryption key. When specifying `kms_key_id`, `storage_encrypted` needs to be set to `true`"
  type        = string
  default     = null
}

variable "master_password" {
  description = "Password for the master DB user. Note - when specifying a value here, 'create_random_password' should be set to `false`"
  type        = string
  default     = null
}

variable "master_username" {
  description = "Username for the master DB user"
  type        = string
  default     = "root"
}

variable "port" {
  description = "The port on which the DB accepts connections"
  type        = string
  default     = null
}

variable "preferred_backup_window" {
  description = "The daily time range during which automated backups are created if automated backups are enabled using the `backup_retention_period` parameter. Time in UTC"
  type        = string
  default     = "02:00-03:00"
}

variable "preferred_maintenance_window" {
  description = "The weekly time range during which system maintenance can occur, in (UTC)"
  type        = string
  default     = "sun:05:00-sun:06:00"
}

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     = null
}

variable "restore_to_point_in_time" {
  description = "Map of nested attributes for cloning Aurora cluster"
  type        = 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     = {}
}

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 "serverlessv2_scaling_configuration" {
  description = "Map of nested attributes with serverless v2 scaling properties. Only valid when `engine_mode` is set to `provisioned`"
  type        = map(string)
  default     = {}
}

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

variable "snapshot_identifier" {
  description = "Specifies whether or not to create this cluster from a snapshot. You can use either the name or ARN when specifying a DB cluster snapshot, or the ARN when specifying a DB snapshot"
  type        = string
  default     = null
}

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

variable "storage_encrypted" {
  description = "Specifies whether the DB cluster is encrypted. The default is `true`"
  type        = bool
  default     = true
}

variable "storage_type" {
  description = "Specifies the storage type to be associated with the DB cluster. (This setting is required to create a Multi-AZ DB cluster). Valid values: `io1`, Default: `io1`"
  type        = string
  default     = null
}

variable "cluster_tags" {
  description = "A map of tags to add to only the cluster. Used for AWS Instance Scheduler tagging"
  type        = map(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 "cluster_timeouts" {
  description = "Create, update, and delete timeout configurations for the cluster"
  type        = map(string)
  default     = {}
}

################################################################################
# Cluster Instance(s)
################################################################################

variable "instances" {
  description = "Map of cluster instances and any specific/overriding attributes to be created"
  type        = any
  default     = {}
}

variable "auto_minor_version_upgrade" {
  description = "Indicates that minor engine upgrades will be applied automatically to the DB instance during the maintenance window. Default `true`"
  type        = bool
  default     = null
}

variable "ca_cert_identifier" {
  description = "The identifier of the CA certificate for the DB instance"
  type        = string
  default     = null
}

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

variable "instances_use_identifier_prefix" {
  description = "Determines whether cluster instance identifiers are used as prefixes"
  type        = bool
  default     = false
}

variable "instance_class" {
  description = "Instance type to use at master instance. Note: if `autoscaling_enabled` is `true`, this will be the same instance class used on instances created by autoscaling"
  type        = string
  default     = ""
}

variable "monitoring_interval" {
  description = "The interval, in seconds, between points when Enhanced Monitoring metrics are collected for instances. Set to `0` to disable. Default is `0`"
  type        = number
  default     = 0
}

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

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

variable "performance_insights_retention_period" {
  description = "Amount of time in days to retain Performance Insights data. Either 7 (7 days) or 731 (2 years)"
  type        = number
  default     = null
}

variable "publicly_accessible" {
  description = "Determines whether instances are publicly accessible. Default false"
  type        = bool
  default     = null
}

variable "instance_timeouts" {
  description = "Create, update, and delete timeout configurations for the cluster instance(s)"
  type        = map(string)
  default     = {}
}

################################################################################
# Cluster Endpoint(s)
################################################################################

variable "endpoints" {
  description = "Map of additional cluster endpoints and their attributes to be created"
  type        = any
  default     = {}
}

################################################################################
# Cluster IAM Roles
################################################################################

variable "iam_roles" {
  description = "Map of IAM roles and supported feature names to associate with the cluster"
  type        = map(map(string))
  default     = {}
}

################################################################################
# Enhanced Monitoring
################################################################################

variable "create_monitoring_role" {
  description = "Determines 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 monitoring role"
  type        = string
  default     = null
}

variable "iam_role_use_name_prefix" {
  description = "Determines 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 monitoring role"
  type        = string
  default     = null
}

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

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

variable "iam_role_force_detach_policies" {
  description = "Whether to force detaching any policies the monitoring 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 monitoring role"
  type        = number
  default     = null
}

################################################################################
# Autoscaling
################################################################################

variable "autoscaling_enabled" {
  description = "Determines whether autoscaling of the cluster read replicas is enabled"
  type        = bool
  default     = false
}

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

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

variable "autoscaling_policy_name" {
  description = "Autoscaling policy name"
  type        = string
  default     = "target-metric"
}

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

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

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

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

variable "autoscaling_target_connections" {
  description = "Average number of connections threshold which will initiate autoscaling. Default value is 70% of db.r4/r5/r6g.large's default max_connections"
  type        = number
  default     = 700
}

################################################################################
# Security Group
################################################################################

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

variable "security_group_use_name_prefix" {
  description = "Determines whether the security group name (`name`) is used as a prefix"
  type        = bool
  default     = true
}

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     = null
}

variable "vpc_id" {
  description = "ID of the VPC where to create security group"
  type        = string
  default     = ""
}

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 "security_group_egress_rules" {
  description = "A map of security group egress rule definitions to add to the security group created"
  type        = map(any)
  default     = {}
}

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

################################################################################
# Cluster Parameter Group
################################################################################

variable "create_db_cluster_parameter_group" {
  description = "Determines whether a cluster parameter should be created or use existing"
  type        = bool
  default     = false
}

variable "db_cluster_parameter_group_name" {
  description = "The name of the DB cluster parameter group"
  type        = string
  default     = null
}

variable "db_cluster_parameter_group_use_name_prefix" {
  description = "Determines whether the DB cluster parameter group name is used as a prefix"
  type        = bool
  default     = true
}

variable "db_cluster_parameter_group_description" {
  description = "The description of the DB cluster parameter group. Defaults to \"Managed by Terraform\""
  type        = string
  default     = null
}

variable "db_cluster_parameter_group_family" {
  description = "The family of the DB cluster parameter group"
  type        = string
  default     = ""
}

variable "db_cluster_parameter_group_parameters" {
  description = "A list of DB cluster parameters to apply. Note that parameters may differ from a family to an other"
  type        = list(map(string))
  default     = []
}

################################################################################
# DB Parameter Group
################################################################################


variable "create_db_parameter_group" {
  description = "Determines whether a DB parameter should be created or use existing"
  type        = bool
  default     = false
}

variable "db_parameter_group_use_name_prefix" {
  description = "Determines whether the DB parameter group name is used as a prefix"
  type        = bool
  default     = true
}

variable "db_parameter_group_description" {
  description = "The description of the DB parameter group. Defaults to \"Managed by Terraform\""
  type        = string
  default     = null
}

variable "db_parameter_group_family" {
  description = "The family of the DB parameter group"
  type        = string
  default     = ""
}

variable "db_parameter_group_parameters" {
  description = "A list of DB parameters to apply. Note that parameters may differ from a family to an other"
  type        = list(map(string))
  default     = []
}

variable "putin_khuylo" {
  description = "Do you agree that Putin doesn't respect Ukrainian sovereignty and territorial integrity? More info: https://en.wikipedia.org/wiki/Putin_khuylo!"
  type        = bool
  default     = true
}