_network.tf

resource "aws_vpc" "vpc" {
  cidr_block           = "${var.vpc-cidr-block}"
  enable_dns_hostnames = true

  tags = "${merge(
    local.common_tags,
    map(
      "Name", "${var.vpc-tag-name}"
    )
  )}"
}

resource "aws_internet_gateway" "ig" {
  vpc_id = "${aws_vpc.vpc.id}"

  tags = "${merge(
    local.common_tags,
    map(
      "Name", "${var.ig-tag-name}"
    )
  )}"
}

resource "aws_subnet" "subnet-1" {
  vpc_id            = "${aws_vpc.vpc.id}"
  cidr_block        = "${var.subnet-1-cidr-block}"
  availability_zone = "${var.aws-region}a"

  tags = "${merge(
    local.common_tags,
    map(
      "Name", "${var.subnet-tag-name}"
    )
  )}"
}

resource "aws_subnet" "subnet-2" {
  vpc_id            = "${aws_vpc.vpc.id}"
  cidr_block        = "${var.subnet-2-cidr-block}"
  availability_zone = "${var.aws-region}b"

  tags = "${merge(
    local.common_tags,
    map(
      "Name", "${var.subnet-tag-name}"
    )
  )}"
}

resource "aws_route_table" "rt" {
  vpc_id = "${aws_vpc.vpc.id}"

  route = {
    cidr_block = "0.0.0.0/0"
    gateway_id = "${aws_internet_gateway.ig.id}"
  }

  tags = "${local.common_tags}"
}

resource "aws_route_table_association" "rta_1" {
  subnet_id      = "${aws_subnet.subnet-1.id}"
  route_table_id = "${aws_route_table.rt.id}"
}

resource "aws_route_table_association" "rta_2" {
  subnet_id      = "${aws_subnet.subnet-2.id}"
  route_table_id = "${aws_route_table.rt.id}"
}