variables.tf

variable "architectures" {
  description = <<EOF
    Instruction set architecture for your Lambda function. Valid values are ["x86_64"] and ["arm64"]. 
    Default is ["x86_64"]. Removing this attribute, function's architecture stay the same.
  EOF
  type        = list(string)
  default     = null
}

variable "cloudwatch_event_rules" {
  description = "Creates EventBridge (CloudWatch Events) rules for invoking the Lambda Function along with the required permissions."
  type        = map(any)
  default     = {}
}

variable "cloudwatch_lambda_insights_enabled" {
  description = "Enable CloudWatch Lambda Insights for the Lambda Function."
  type        = bool
  default     = false
}

variable "cloudwatch_logs_retention_in_days" {
  description = <<EOF
  Specifies the number of days you want to retain log events in the specified log group. Possible values are: 
  1, 3, 5, 7, 14, 30, 60, 90, 120, 150, 180, 365, 400, 545, 731, 1827, 3653, and 0. If you select 0, the events in the 
  log group are always retained and never expire.
  EOF
  type        = number
  default     = null
}

variable "cloudwatch_logs_kms_key_arn" {
  description = "The ARN of the KMS Key to use when encrypting log data."
  type        = string
  default     = null
}

variable "cloudwatch_log_subscription_filters" {
  description = "CloudWatch Logs subscription filter resources. Currently supports only Lambda functions as destinations."
  default     = {}
  type        = map(any)
}

variable "description" {
  description = "Description of what the Lambda Function does."
  default     = null
  type        = string
}

variable "lambda_environment" {
  description = "Environment (e.g. env variables) configuration for the Lambda function enable you to dynamically pass settings to your function code and libraries"
  default     = null
  type = object({
    variables = map(string)
  })
}

variable "event_source_mappings" {
  description = <<EOF
  Creates event source mappings to allow the Lambda function to get events from Kinesis, DynamoDB and SQS. The IAM role 
  of this Lambda function will be enhanced with necessary minimum permissions to get those events.
  EOF
  default     = {}
  type        = any
}

variable "filename" {
  description = "The path to the function's deployment package within the local filesystem. If defined, The s3_-prefixed options and image_uri cannot be used."
  default     = null
  type        = string
}

variable "function_name" {
  description = "Unique name for the Lambda Function."
  type        = string
}


variable "ignore_external_function_updates" {
  description = <<EOF
  Ignore updates to the Lambda Function executed externally to the Terraform lifecycle. Set this to `true` if you're 
  using CodeDeploy, aws CLI or other external tools to update the Lambda Function code."
  EOF
  default     = false
  type        = bool
}

variable "handler" {
  description = "The function entrypoint in your code."
  default     = null
  type        = string
}

variable "image_config" {
  description = <<EOF
  The Lambda OCI [image configurations](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/lambda_function#image_config) 
  block with three (optional) arguments:
  - *entry_point* - The ENTRYPOINT for the docker image (type `list(string)`).
  - *command* - The CMD for the docker image (type `list(string)`).
  - *working_directory* - The working directory for the docker image (type `string`).
  EOF
  default     = {}
  type        = any
}

variable "image_uri" {
  description = "The ECR image URI containing the function's deployment package. Conflicts with filename, s3_bucket, s3_key, and s3_object_version."
  default     = null
  type        = string
}

variable "kms_key_arn" {
  description = <<EOF
  Amazon Resource Name (ARN) of the AWS Key Management Service (KMS) key that is used to encrypt environment variables. 
  If this configuration is not provided when environment variables are in use, AWS Lambda uses a default service key. 
  If this configuration is provided when environment variables are not in use, the AWS Lambda API does not save this 
  configuration and Terraform will show a perpetual difference of adding the key. To fix the perpetual difference, 
  remove this configuration.
  EOF
  default     = ""
  type        = string
}

variable "lambda_at_edge" {
  description = "Enable Lambda@Edge for your Node.js or Python functions. Required trust relationship and publishing of function versions will be configured."
  default     = false
  type        = bool
}

variable "layers" {
  description = "List of Lambda Layer Version ARNs (maximum of 5) to attach to the Lambda Function."
  default     = []
  type        = list(string)
}

variable "memory_size" {
  description = "Amount of memory in MB the Lambda Function can use at runtime."
  default     = 128
  type        = number
}

variable "package_type" {
  description = "The Lambda deployment package type. Valid values are Zip and Image."
  default     = "Zip"
  type        = string
}

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

variable "publish" {
  description = "Whether to publish creation/change as new Lambda Function Version."
  default     = false
  type        = bool
}

variable "reserved_concurrent_executions" {
  description = "The amount of reserved concurrent executions for this lambda function. A value of 0 disables lambda from being triggered and -1 removes any concurrency limitations."
  default     = -1
  type        = number
}

variable "runtime" {
  description = "The runtime environment for the Lambda function you are uploading."
  default     = null
  type        = string
}

variable "s3_bucket" {
  description = <<EOF
  The S3 bucket location containing the function's deployment package. Conflicts with filename and image_uri. 
  This bucket must reside in the same AWS region where you are creating the Lambda function.
  EOF
  default     = null
  type        = string
}

variable "s3_key" {
  description = "The S3 key of an object containing the function's deployment package. Conflicts with filename and image_uri."
  default     = null
  type        = string
}

variable "s3_object_version" {
  description = "The object version containing the function's deployment package. Conflicts with filename and image_uri."
  default     = null
  type        = string
}

variable "sns_subscriptions" {
  description = "Creates subscriptions to SNS topics which trigger the Lambda Function. Required Lambda invocation permissions will be generated."
  default     = {}
  type        = map(any)
}

variable "source_code_hash" {
  description = <<EOF
  Used to trigger updates. Must be set to a base64-encoded SHA256 hash of the package file specified with either 
  filename or s3_key. The usual way to set this is filebase64sha256('file.zip') where 'file.zip' is the local filename 
  of the lambda function source archive.
  EOF
  default     = ""
  type        = string
}

variable "ssm_parameter_names" {
  description = <<EOF
  List of AWS Systems Manager Parameter Store parameter names. The IAM role of this Lambda function will be enhanced 
  with read permissions for those parameters. Parameters must start with a forward slash and can be encrypted with the 
  default KMS key.
  EOF
  default     = null
  type        = list(string)
}

variable "timeout" {
  description = "The amount of time the Lambda Function has to run in seconds."
  default     = 3
  type        = number
}

variable "tracing_config_mode" {
  description = "Tracing config mode of the Lambda function. Can be either PassThrough or Active."
  default     = null
  type        = string
}

variable "vpc_config" {
  description = <<EOF
  Provide this to allow your function to access your VPC (if both 'subnet_ids' and 'security_group_ids' are empty then 
  vpc_config is considered to be empty or unset, see https://docs.aws.amazon.com/lambda/latest/dg/vpc.html for details).
  EOF
  default     = null
  type = object({
    security_group_ids = list(string)
    subnet_ids         = list(string)
  })
}

variable "custom_iam_policy_arns" {
  type        = set(string)
  description = "ARNs of custom policies to be attached to the lambda role"
  default     = []
}

variable "dead_letter_config_target_arn" {
  type        = string
  description = <<EOF
  ARN of an SNS topic or SQS queue to notify when an invocation fails. If this option is used, the function's IAM role 
  must be granted suitable access to write to the target object, which means allowing either the sns:Publish or 
  sqs:SendMessage action on this ARN, depending on which service is targeted."
  EOF
  default     = null
}