variables.tf

/**
 * Copyright 2024 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

variable "project_id" {
  description = "The project in which the resource belongs."
  type        = string
}

variable "region" {
  description = "The region in which security policy is created"
  type        = string
}

variable "name" {
  description = "Name of regional security policy. Name must be 1-63 characters long and match the regular expression a-z? which means the first character must be a lowercase letter, and all following characters must be a dash, lowercase letter, or digit, except the last character, which cannot be a dash"
  type        = string
  default     = "adv-network-ddos-protection"
}

variable "type" {
  description = "Type indicates the intended use of the security policy. Possible values are CLOUD_ARMOR and CLOUD_ARMOR_EDGE."
  type        = string
  default     = "CLOUD_ARMOR"
}

variable "description" {
  description = "An optional description of advanced network ddos protection security policy"
  type        = string
  default     = "CA Advance DDoS protection"
}

variable "pre_configured_rules" {
  description = "Map of pre-configured rules with Sensitivity levels"
  type = map(object({
    action                  = string
    priority                = number
    description             = optional(string)
    preview                 = optional(bool, false)
    target_rule_set         = string
    sensitivity_level       = optional(number, 4)
    include_target_rule_ids = optional(list(string), [])
    exclude_target_rule_ids = optional(list(string), [])
    rate_limit_options = optional(object({
      enforce_on_key      = optional(string)
      enforce_on_key_name = optional(string)
      enforce_on_key_configs = optional(list(object({
        enforce_on_key_name = optional(string)
        enforce_on_key_type = optional(string)
      })))
      exceed_action                        = optional(string)
      rate_limit_http_request_count        = optional(number)
      rate_limit_http_request_interval_sec = optional(number)
      ban_duration_sec                     = optional(number)
      ban_http_request_count               = optional(number)
      ban_http_request_interval_sec        = optional(number)
    }), {})

    preconfigured_waf_config_exclusions = optional(map(object({
      target_rule_set = string
      target_rule_ids = optional(list(string), [])
      request_header = optional(list(object({
        operator = string
        value    = optional(string)
      })))
      request_cookie = optional(list(object({
        operator = string
        value    = optional(string)
      })))
      request_uri = optional(list(object({
        operator = string
        value    = optional(string)
      })))
      request_query_param = optional(list(object({
        operator = string
        value    = optional(string)
      })))
    })), null)

  }))

  default = {}
}

variable "security_rules" {
  description = "Map of Security rules with list of IP addresses to block or unblock."
  type = map(object({
    action        = string
    priority      = number
    description   = optional(string)
    preview       = optional(bool, false)
    src_ip_ranges = list(string)
    rate_limit_options = optional(object({
      enforce_on_key      = optional(string)
      enforce_on_key_name = optional(string)
      enforce_on_key_configs = optional(list(object({
        enforce_on_key_name = optional(string)
        enforce_on_key_type = optional(string)
      })))
      exceed_action                        = optional(string)
      rate_limit_http_request_count        = optional(number)
      rate_limit_http_request_interval_sec = optional(number)
      ban_duration_sec                     = optional(number)
      ban_http_request_count               = optional(number)
      ban_http_request_interval_sec        = optional(number)
      }),
    {})
  }))

  default = {}
}

variable "custom_rules" {
  description = "Custome security rules"
  type = map(object({
    action      = string
    priority    = number
    description = optional(string)
    preview     = optional(bool, false)
    expression  = string
    rate_limit_options = optional(object({
      enforce_on_key      = optional(string)
      enforce_on_key_name = optional(string)
      enforce_on_key_configs = optional(list(object({
        enforce_on_key_name = optional(string)
        enforce_on_key_type = optional(string)
      })))
      exceed_action                        = optional(string)
      rate_limit_http_request_count        = optional(number)
      rate_limit_http_request_interval_sec = optional(number)
      ban_duration_sec                     = optional(number)
      ban_http_request_count               = optional(number)
      ban_http_request_interval_sec        = optional(number)
      }),
    {})

    preconfigured_waf_config_exclusions = optional(map(object({
      target_rule_set = string
      target_rule_ids = optional(list(string), [])
      request_header = optional(list(object({
        operator = string
        value    = optional(string)
      })))
      request_cookie = optional(list(object({
        operator = string
        value    = optional(string)
      })))
      request_uri = optional(list(object({
        operator = string
        value    = optional(string)
      })))
      request_query_param = optional(list(object({
        operator = string
        value    = optional(string)
      })))
    })), null)

  }))
  default = {}
}

variable "default_rule_action" {
  description = "default rule that allows/denies all traffic with the lowest priority (2,147,483,647)."
  type        = string
  default     = "allow"
}