[TERRAFORM] Added the Terraform deployment module for search (#26)

* [TERRAFORM] Added the Terraform deployment module for search

Added the terraform module with the necessary files.

* [TERRAFORM] updated some small configuration items

Also deleted the main.tf as it is not used.

terraform/README.md

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+# Terraform service generator
+
+# Description
+This Terraform module is used to create the Terraform outputs used as an input for the Infrastructure deployment using Terraform/Terragrunt.
+The configuration of the service is placed inside 'modules/service_configuration/' as a template called 'services.yaml.tftpl'.
+
+Please see the following for more info, including install instructions and complete documentation:
+
+* [Terragrunt Website](https://terragrunt.gruntwork.io)
+* [Getting started with Terragrunt](https://terragrunt.gruntwork.io/docs/getting-started/quick-start/)
+* [Terragrunt Documentation](https://terragrunt.gruntwork.io/docs)
+* [Contributing to Terragrunt](https://terragrunt.gruntwork.io/docs/community/contributing)
+* [Commercial Support](https://terragrunt.gruntwork.io/commercial-support/)

terraform/application_services/app.hcl

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+locals {
+ basicinfra_version = "v1"
+
+ ecr_repo = "028339422996.dkr.ecr.eu-west-1.amazonaws.com"
+
+ app_name = "aerius"
+ app_timezone = "Europe/Amsterdam"
+
+ target_groups = {
+ "tg1" = {name = "search", protocol = "HTTP", port = "8090", path = "/", matcher = "200-399"}
+ }
+
+ listener_rules = {
+ "rule1" = {tg = "tg1", application_type = "SEARCH", path_pattern = "/*", cognito = true}
+ }
+
+ ecs_ctr_fes_1_max_instance_size = "2"
+
+ ecs_capacity_providers = {
+ "01" = {description = "On_demand_capacity", number = "001", asg = "01"}
+ }
+
+ ecs_autoscaling_group = {
+ "01" = {description = "On_demand_capacity", number = "001", spot = false}
+ }
+
+}

terraform/application_services/ecs_services/modules.json

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+[
+ {
+ "url": "git@github.com:aerius/Cloud-infra-modules.git",
+ "version": "v1",
+ "checkout_path": "ecs_services"
+ }
+ ]

terraform/application_services/ecs_services/service_configuration/data.tf

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+#############################
+# COLLECT REMOTE STATE DATA #
+#############################
+
+## Bing API KEY
+data "aws_ssm_parameter" "bing_apikey_search" {
+ name = "/shared/keys/bing"
+}

terraform/application_services/ecs_services/service_configuration/outputs.tf

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+output "services" {
+ description = "The services object containing all configuration"
+ value = yamldecode(templatefile("${path.module}/services.yaml.tftpl", {
+ APP_TIMEZONE = var.app_timezone,
+ APP_VERSION = var.app_version,
+ REGISTRY_URL = var.ecr_directory == null ? "${var.ecr_repo}/${lower(var.environment)}" : "${var.ecr_repo}/${var.ecr_directory}",
+
+ BING_APIKEY = data.aws_ssm_parameter.bing_apikey_search
+
+ })).services
+}

terraform/application_services/ecs_services/service_configuration/services.yaml.tftpl

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+#
+# Copyright the State of the Netherlands
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program. If not, see http://www.gnu.org/licenses/.
+#
+
+services:
+
+ search:
+ image: ${REGISTRY_URL}/search:${APP_VERSION}
+ cpu: 4096
+ memory: 8192
+ desired_count: 1
+ target_group: tg1
+ portmappings:
+ - containerPort: 8090
+ hostPort: 8090
+ environment:
+ - name: TZ
+ value: ${APP_TIMEZONE}
+ - name: NL_AERIUS_BING_APIKEY
+ value: $(BING_APIKEY)

terraform/application_services/ecs_services/service_configuration/terragrunt.hcl

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+############################
+# Terragrunt configuration
+############################
+
+# Include all settings from the root terraform.tfvars file
+include {
+ path = find_in_parent_folders()
+}
+
+
+terraform {
+ extra_arguments "common_vars" {
+ commands = get_terraform_commands_that_need_vars()
+ }
+}

terraform/application_services/ecs_services/service_configuration/vars.tf

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+####################
+# MODULE VARIABLES #
+####################
+
+#--------------------
+# Standard Variables
+#--------------------
+
+variable "account_id" {
+ type = string
+ description = "The AWS account ID in which to provision the infrastructure"
+}
+
+variable "service" {
+ type = map(string)
+ description = "A map of service details, e.g.: name, type, theme etc."
+}
+
+variable "environment" {
+ type = string
+ description = "A string for the Environment used in the terragrunt repository directory structure. E.g development, test, apps_shared_service. etc"
+}
+
+variable "loc" {
+ type = string
+ description = "A string containing the region Code e.g LDN"
+}
+
+variable "tf_bucket_key_prefix" {
+ type = string
+ description = "A string containing the region Code e.g LDN"
+}
+
+#==========================
+# ECS Service Variables
+#==========================
+
+variable "app_version" {
+ type = string
+ description = "The version of the application being deployed"
+}
+
+variable "app_timezone" {
+ type = string
+ description = "Timezone configuration for the application"
+}
+
+variable "ecr_repo" {
+ type = string
+ description = "Name of the ECR repository hosting the images"
+}
+
+variable "ecr_directory" {
+ type = string
+ description = "Name of the directory hosting the images in the ECR repository"
+ default = null
+}
+
+variable "application_host_headers" {
+ type = map
+ description = "Map containing host headers for specific applications"
+}

terraform/application_services/ecs_services/terragrunt.hcl

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+############################
+# Terragrunt configuration
+############################
+
+# Include all settings from the root terraform.tfvars file
+include {
+ path = find_in_parent_folders()
+}
+
+dependencies {
+ paths = ["../service_configuration"]
+}
+
+dependency "service_configuration" {
+ config_path = "../service_configuration"
+
+ mock_outputs = {
+ "services" = {
+ "nginx" = {
+ "image" = "myMockImage:latest"
+ "cpu" = 1024
+ "memory" = 2048
+ "min_capacity" = 1
+ "max_capacity" = 1
+ "desired_count" = 1
+ "portmappings" = [
+ {"containerPort" = 1337},
+ {"hostPort" = 1337}
+ ]
+ }
+ }
+ }
+
+ mock_outputs_allowed_terraform_commands = ["init", "validate", "plan"]
+}
+
+terraform {
+ source = ".//services_generator"
+ extra_arguments "common_vars" {
+ commands = get_terraform_commands_that_need_vars()
+ }
+}
+
+inputs = {
+ services = dependency.service_configuration.outputs.services
+}