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provider "aws" {}


terraform {}

data "aws_iam_policy_document" "domain_access_policy" {
    statement {
        sid = "allow_access_from_specific_ips"
        actions = ["es:*"]
        condition {
            test = "IpAddress"
            variable = "aws:SourceIp"
            values = "${var.allowed_ipaddresses}"
        }
    }
}

resource "aws_elasticsearch_domain" "takeaway" {
    domain_name           = "${var.domain_name}"
    elasticsearch_version = "5.5"
    cluster_config {
        instance_type = "${var.node_size}.elasticsearch"
        instance_count = "${var.node_count}"
    }

    advanced_options {
        "rest.action.multi.allow_explicit_index" = "true"
    }

    ebs_options {
        ebs_enabled = true
        volume_size = "${var.node_volume_size}"
    }

    access_policies = "${data.aws_iam_policy_document.domain_access_policy.json}"

    snapshot_options {
        automated_snapshot_start_hour = 23
    }

    tags {
        Domain = "${var.domain_name}"
        Name = "${var.domain_name}"
    }
}

output "endpoint" {
    value = "${aws_elasticsearch_domain.takeaway.endpoint}"
}

output "domain_id" {
    value = "${aws_elasticsearch_domain.takeaway.domain_id}"
}

output "arn" {
    value = "${aws_elasticsearch_domain.takeaway.arn}"
}

variable "domain_name" {
    default = "testdomain"
}

variable "node_size" {
    default = "t2.medium"
}

variable "node_count" {
    default = "1"
}

variable "node_volume_size" {
    default = "20"
}

variable "allowed_ipaddresses" {
    type = "list"
    default = [
        "62.96.159.233/32"
    ]
}