tf-ecs-fargate-codepipeline conditional deploys (#40)

* tf-ecs-fargate-codepipeline conditional deploys

This changes the `tf-ecs-fargate-lb-service-cicd-codepipeline` template
to allow the user to specify which service instances they would like the
generated ci/cd pipeline to continuously deploy to.

* fixes typo in comment

* updates screenshots to show list of instances

Author: jritsema

terraform/.pre-commit-config.yaml

@@ -18,7 +18,7 @@ repos:
           - "--args=--lockfile=false"
       - id: terraform_tflint
         # ignore until `pipeline_endpoint` is supported
-        exclude: ./service-templates/tf-lambda-apigw-service-cicd-codepipeline/v1/pipeline_infrastructure/
+        exclude: ./service-templates/tf-ecs-fargate-lb-service-cicd-codepipeline/v1/pipeline_infrastructure/
         args:
           - "--args=--only=terraform_deprecated_interpolation"
           - "--args=--only=terraform_deprecated_index"

terraform/service-templates/tf-ecs-fargate-lb-service-cicd-codepipeline/v1/README.md

@@ -27,6 +27,7 @@ make template bucket=my-bucket version=1
 ### Input Parameters
 
 ![input](./input.png)
+![pipeline](./pipeline.png)
 
 
 ## Security

terraform/service-templates/tf-ecs-fargate-lb-service-cicd-codepipeline/v1/input.png

@@ -33,8 +33,9 @@ module "cicd_pipeline" {
   repository_id             = var.service.repository_id
   branch_name               = var.service.branch_name
 
-  # service instances
-  service_instances = var.service_instances
+  # generated pipeline should only deploy to instances specified by user
+  service_instances = tolist([for i in var.service_instances : i
+  if contains(var.pipeline.inputs.instances_to_deploy, i.name)])
 
   # pipeline input
   service_source_dir = var.pipeline.inputs.service_dir

terraform/service-templates/tf-ecs-fargate-lb-service-cicd-codepipeline/v1/pipeline.png

@@ -51,20 +51,29 @@ schema:
       type: object
       description: "Pipeline input properties"
       properties:
+        instances_to_deploy:
+          type: array
+          items:
+            type: string
+          title: Instances to deploy
+          description: Which instances would you like to continuously deploy to
         service_dir:
           type: string
+          title: "Source directory for the service"
           description: "Source directory for the service"
           default: "."
           minLength: 1
           maxLength: 100
         dockerfile:
           type: string
+          title: "Dockerfile location"
           description: "The location of the Dockerfile to build"
           default: "Dockerfile"
           minLength: 1
           maxLength: 100
         unit_test_command:
           type: string
+          title: "Unit test command"
           description: "The command to run to unit test the application code"
           default: "echo 'add your unit test command here'"
           minLength: 1