variables.tf

variable "region" {
  description = "The region of AWS you want to work in, such as us-west-2 or us-east-1"
}

variable "hec_url" {
  description = "Splunk Kinesis URL for submitting CloudWatch logs to splunk"
}

variable "hec_token" {
  description = "Splunk security token needed to submit data to Splunk"
}

variable "nodejs_runtime" {
  description = "Runtime version of nodejs for Lambda function"
  default     = "nodejs12.x"
}

variable "firehose_name" {
  description = "Name of the Kinesis Firehose"
  default     = "kinesis-firehose-to-splunk"
}

variable "kinesis_firehose_buffer" {
  description = "https://www.terraform.io/docs/providers/aws/r/kinesis_firehose_delivery_stream.html#buffer_size"
  default     = 5 # Megabytes
}

variable "kinesis_firehose_buffer_interval" {
  description = "Buffer incoming data for the specified period of time, in seconds, before delivering it to the destination"
  default     = 300 # Seconds
}

variable "s3_prefix" {
  description = "Optional prefix (a slash after the prefix will show up as a folder in the s3 bucket).  The YYYY/MM/DD/HH time format prefix is automatically used for delivered S3 files."
  default     = "kinesis-firehose/"
}

variable "hec_acknowledgment_timeout" {
  description = "The amount of time, in seconds between 180 and 600, that Kinesis Firehose waits to receive an acknowledgment from Splunk after it sends it data."
  default     = 300
}

variable "hec_endpoint_type" {
  description = "Splunk HEC endpoint type; `Raw` or `Event`"
  default     = "Raw"
}

variable "s3_backup_mode" {
  description = "Defines how documents should be delivered to Amazon S3. Valid values are FailedEventsOnly and AllEvents."
  default     = "FailedEventsOnly"
}

variable "s3_compression_format" {
  description = "The compression format for what the Kinesis Firehose puts in the s3 bucket"
  default     = "GZIP"
}

variable "enable_fh_cloudwatch_logging" {
  description = "Enable kinesis firehose CloudWatch logging. (It only logs errors)"
  default     = true
}

variable "tags" {
  type        = map(string)
  description = "Map of tags to put on the resource"
  default     = {}
}

variable "cloudwatch_log_retention" {
  description = "Length in days to keep CloudWatch logs of Kinesis Firehose"
  default     = 30
}

variable "log_stream_name" {
  description = "Name of the CloudWatch log stream for Kinesis Firehose CloudWatch log group"
  default     = "SplunkDelivery"
}

variable "s3_bucket_name" {
  description = "Name of the s3 bucket Kinesis Firehose uses for backups"
}

variable "s3_bucket_block_public_access_enabled" {
  description = "Set to 1 if you would like to add block public access settings for the s3 bucket Kinesis Firehose uses for backups"
  default     = 0
}

variable "encryption_context" {
  description = "aws_kms_secrets encryption context"
  type        = map(string)
  default     = {}
}

variable "kinesis_firehose_lambda_role_name" {
  description = "Name of IAM Role for Lambda function that transforms CloudWatch data for Kinesis Firehose into Splunk compatible format"
  default     = "KinesisFirehoseToLambaRole"
}

variable "kinesis_firehose_role_name" {
  description = "Name of IAM Role for the Kinesis Firehose"
  default     = "KinesisFirehoseRole"
}

variable "arn_cloudwatch_logs_to_ship" {
  description = "arn of the CloudWatch Log Group that you want to ship to Splunk."
}

variable "name_cloudwatch_logs_to_ship" {
  description = "name of the CloudWatch Log Group that you want to ship to Splunk."
}

variable "lambda_function_name" {
  description = "Name of the Lambda function that transforms CloudWatch data for Kinesis Firehose into Splunk compatible format"
  default     = "kinesis-firehose-transform"
}

variable "lambda_function_timeout" {
  description = "The function execution time at which Lambda should terminate the function."
  default     = 180
}

variable "lambda_iam_policy_name" {
  description = "Name of the IAM policy that is attached to the IAM Role for the lambda transform function"
  default     = "Kinesis-Firehose-to-Splunk-Policy"
}

variable "kms_key_arn" {
  description = "arn of the KMS key you used to encrypt the hec_token"
}

variable "kinesis_firehose_iam_policy_name" {
  description = "Name of the IAM Policy attached to IAM Role for the Kinesis Firehose"
  default     = "KinesisFirehose-Policy"
}

variable "cloudwatch_to_firehose_trust_iam_role_name" {
  description = "IAM Role name for CloudWatch to Kinesis Firehose subscription"
  default     = "CloudWatchToSplunkFirehoseTrust"
}

variable "cloudwatch_to_fh_access_policy_name" {
  description = "Name of IAM policy attached to the IAM role for CloudWatch to Kinesis Firehose subscription"
  default     = "KinesisCloudWatchToFirehosePolicy"
}

variable "cloudwatch_log_filter_name" {
  description = "Name of Log Filter for CloudWatch Log subscription to Kinesis Firehose"
  default     = "KinesisSubscriptionFilter"
}

variable "subscription_filter_pattern" {
  description = "Filter pattern for the CloudWatch Log Group subscription to the Kinesis Firehose. See [this](https://docs.aws.amazon.com/AmazonCloudWatch/latest/logs/FilterAndPatternSyntax.html) for filter pattern info."
  default     = "" # nothing is being filtered
}