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FCP Template Node

Template to support rapid delivery of microservices for FCP Platform. It contains the configuration needed to deploy a simple Hapi Node server to the Azure Kubernetes Platform.

Usage

Create a new repository from this template and run ./rename.js specifying the new name of the project and the description to use e.g.

./rename.js ffc-demo-web "Web frontend for demo workstream"

The script will update the following:

  • package.json: update name, description, homepage
  • docker-compose.yaml: update the service name, image and container_name
  • docker-compose.test.yaml: update the service name, image and container_name
  • docker-compose.override.yaml: update the service name, image and container_name
  • Rename helm/ffc-template-node
  • helm/ffc-template-node/Chart.yaml: update description and name
  • helm/ffc-template-node/values.yaml: update name, namespace, workstream, image, containerConfigMap.name
  • helm/ffc-template-node/templates/_container.yaml: update the template name
  • helm/ffc-template-node/templates/cluster-ip-service.yaml: update the template name and list parameter of include
  • helm/ffc-template-node/templates/config-map.yaml: update the template name and list parameter of include
  • helm/ffc-template-node/templates/deployment.yaml: update the template name, list parameter of deployment and container includes

Notes on automated rename

  • The Helm chart deployment values in helm/ffc-template-node/values.yaml may need updating depending on the resource needs of your microservice
  • The rename is a one-way operation i.e. currently it doesn't allow the name being changed from to be specified
  • There is some validation on the input to try and ensure the rename is successful, however, it is unlikely to stand up to malicious entry
  • Once the rename has been performed the script can be removed from the repo
  • Should the rename go awry the changes can be reverted via git clean -df && git checkout -- .

Prerequisites

  • Docker
  • Docker Compose

Optional:

  • Kubernetes
  • Helm

Running the application

The application is designed to run in containerised environments, using Docker Compose in development and Kubernetes in production.

  • A Helm chart is provided for production deployments to Kubernetes.

Build container image

Container images are built using Docker Compose, with the same images used to run the service with either Docker Compose or Kubernetes.

When using the Docker Compose files in development the local app folder will be mounted on top of the app folder within the Docker container, hiding the CSS files that were generated during the Docker build. For the site to render correctly locally npm run build must be run on the host system.

By default, the start script will build (or rebuild) images so there will rarely be a need to build images manually. However, this can be achieved through the Docker Compose build command:

# Build container images
docker-compose build

Start

Use Docker Compose to run service locally.

docker-compose up

Test structure

The tests have been structured into subfolders of ./test as per the Microservice test approach and repository structure

Running tests

A convenience script is provided to run automated tests in a containerised environment. This will rebuild images before running tests via docker-compose, using a combination of docker-compose.yaml and docker-compose.test.yaml. The command given to docker-compose run may be customised by passing arguments to the test script.

Examples:

# Run all tests
scripts/test

# Run tests with file watch
scripts/test -w

CI pipeline

This service uses the FFC CI pipeline

Licence

THIS INFORMATION IS LICENSED UNDER THE CONDITIONS OF THE OPEN GOVERNMENT LICENCE found at:

http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3

The following attribution statement MUST be cited in your products and applications when using this information.

Contains public sector information licensed under the Open Government license v3

About the licence

The Open Government Licence (OGL) was developed by the Controller of Her Majesty's Stationery Office (HMSO) to enable information providers in the public sector to license the use and re-use of their information under a common open licence.

It is designed to encourage use and re-use of information freely and flexibly, with only a few conditions.