terraform-commons.tf

terraform {
  required_version = ">= 0.12.6"
}

variable "environment" {
  type = string
  description = "What deployment environment should we use <dev|stg|prd>?"
  default = "dev"
}

locals {
  environment = lookup(local.environment_map, var.environment, "dev")
  environment_map = {
    dev = "dev"
    stg = "stg"
    prd = "prd"
  }
  region = local.region_map[local.environment]
  region_map = {
    dev = "eu-west-1"
    stg = "eu-west-1"
    prd = "eu-west-1"
  }
  # VPCs Peering (rfc1918):
  vpc_cidr_map = {
    dev = "10.0.0.0/16"
    stg = "172.16.0.0/16"
    prd = "192.168.0.0/16"
  }
  private_subnets_map = {
    dev = ["10.0.1.0/24", "10.0.2.0/24", "10.0.3.0/24"]
    stg = ["172.16.1.0/24", "172.16.2.0/24", "172.16.3.0/24"]
    prd = ["192.168.1.0/24", "192.168.2.0/24", "192.168.3.0/24"]
  }
  intra_subnets_map = {
    dev = ["10.0.11.0/24", "10.0.12.0/24", "10.0.13.0/24"]
    stg = ["172.16.11.0/24", "172.16.12.0/24", "172.16.13/24"]
    prd = ["192.168.11.0/24", "192.168.12.0/24", "192.168.13.0/24"]
  }
  database_subnets_map = {
    dev = ["10.0.21.0/24", "10.0.22.0/24", "10.0.23.0/24"]
    stg = ["172.16.21.0/24", "172.16.22.0/24", "172.16.23.0/24"]
    prd = ["192.168.21.0/24", "192.168.22.0/24", "192.168.23.0/24"]
  }
  public_subnets_map = {
    dev = ["10.0.101.0/24", "10.0.102.0/24", "10.0.103.0/24"]
    stg = ["172.16.101.0/24", "172.16.102.0/24", "172.16.103.0/24"]
    prd = ["192.168.101.0/24", "192.168.102.0/24", "192.168.103.0/24"]
  }
  ec2_instance_type_map = {
    dev = "t3a.small"
    stg = "t3a.small"
    prd = "t3a.medium"
  }
}

output "environment" {
  description = "This environment"
  value       = local.environment
}

output "region_map" {
  description = "Map with aws_region for each environment"
  value       = local.region_map
}

output "region" {
  description = "Region used for selected environment"
  value       = local.region
}

output "defaults" {
  description = "Default settings for choosen environment"
  value = {
    organization      = "example"
    hq_ip             = "152.115.64.106/32"
    ubuntu_release    = "20.04"
    domain_name       = "foo.bar"
    cidr              = local.vpc_cidr_map[local.environment]
    private_subnets   = flatten(local.private_subnets_map[local.environment])
    intra_subnets     = flatten(local.intra_subnets_map[local.environment])
    public_subnets    = flatten(local.public_subnets_map[local.environment])
    database_subnets  = flatten(local.database_subnets_map[local.environment])
    ec2_instance_type = local.ec2_instance_type_map[local.environment]
    aws_accounts = {
      "prd" = "063792149814"
      "dev" = "091671180443"
      "stg" = "091671180443"
    }
  }
}

output "vpc_cidr_map" {
  value = local.vpc_cidr_map
}

output "environment_map" {
  description = "Map of available environments"
  value       = local.environment_map
}

output "codeship_ips" {
  description = "https://docs.cloudbees.com/docs/cloudbees-codeship/latest/general-account/static-ip-addresses"
  value = sort(compact(distinct(["35.153.154.87", "34.235.84.42", "54.88.27.219", "35.170.141.30", "52.20.253.7", "107.23.56.82", "34.238.108.61", "34.239.17.55"])))
}

output "third_part_cidr_blocks" {
  description = "Map with third part block cidr"
  value = {
    noitso       = ["94.189.60.102/32"]
    trustly      = ["93.158.127.40/32"]
  }
}