Trade Tariff Frontend

Now maintained by HMRC

https://www.trade-tariff.service.gov.uk/trade-tariff/sections

This is the front-end application for:

• Trade Tariff Backend

This application requires the Trade Tariff Backend API to be running and the following env variable set TARIFF_API_HOST. To use latest api version need to set up env variable TARIFF_API_VERSION.

Running the frontend

Requires:

• Ruby
• Rails
• node & npm
• yarn

Uses:

• Redis

Commands:

./bin/setup
yarn install
foreman start

Running the test suite

To run the spec use the following command:

RAILS_ENV=test bundle exec rake

Deploying the application

We deploy to cloud foundry, so you need to have the CLI installed, and the following cf plugin installed:

Set the following ENV variables:

• CF_USER
• CF_PASSWORD
• CF_ORG
• CF_SPACE
• CF_APP
• SLACK_CHANNEL
• SLACK_WEBHOOK

Then run

./bin/deploy

Scaling the application

We are using CF AutoScaler plugin to perform application autoscaling. Set up guide and documentation are available by links below:

https://docs.cloud.service.gov.uk/managing_apps.html#autoscaling

https://github.com/cloudfoundry/app-autoscaler/blob/develop/docs/Readme.md

To check autoscaling history run:

cf autoscaling-history APPNAME

To check autoscaling metrics run:

cf autoscaling-metrics APP_NAME METRIC_NAME

To remove autoscaling policy and disable App Autoscaler run:

cf detach-autoscaling-policy APP_NAME

To create or update autoscaling policy for your application run:

cf attach-autoscaling-policy APP_NAME ./policy.json

Current autosscaling policy files are here.