tvararu / early-careers-framework

Early careers framework

Development Setup

Prerequisites

• Ruby 3.1.2
• PostgreSQL (we deploy on 11.x)
• NodeJS 16.17.1
• Yarn 1.12.x
• Docker
• Redis 6.2

Without docker

1. Run bundle install to install the gem dependencies
2. Run yarn to install node dependencies
3. Create .env file - copy .env.template. Set your database password and user in the .env file
4. Run mkdir log && touch log/mail.log
5. Run bin/rails db:setup to set up the database development and test schemas, and seed with test data
6. Run bundle exec rails server to launch the app on http://localhost:3000
7. Run ./bin/webpacker-dev-server in a separate shell for faster compilation of assets
8. For most work, you will need to seed the database with rails db:seed. For school data, see Importing School data

With docker

There is a separate Dockerfile for local development. It isn't (currently) very widely used - if it doesn't work, make sure any recently changes to Dockerfile have been applied to Dockerfile.dev where appropriate.

1. Create .env file - copy .env.template. Set your database password and user from the docker-compose file in the .env file
2. Run docker-compose build to build the web image
3. Run docker-compose run --rm web bundle exec rake db:setup to setup the database
4. Run docker-compose up to start the service

It should be possible to run just the database from docker, if you want to. Check docker-compose file for username and password to put in your .env file.

If you want to seed the database you can either run db:drop and db:setup tasks with your preferred method, or db:seed.

Govuk Notify

Register on GOV.UK Notify. Ask someone from the team to add you to our service. Generate a limited api key for yourself and set it in your .env file.

Set up git hooks

Run git config core.hooksPath .githooks to use the included git hooks.

Running specs, linter(without auto correct) and annotate models and serializers

bundle exec rake

Running specs

bundle exec rspec

Running specs in parallel

One time Setup

bundle exec rake parallel:create

Running specs thereafter

bundle exec rake parallel:migrate
bundle exec rake parallel:spec

Running swagger doc generator

It auto-generates swagger/*/api_spec.json from the schema files located in spec/docs

bundle exec rake rswag:specs:swaggerize

Importing swagger JSON spec into Postman

To import the JSON spec into Postman (or equivalent) copy from:

https://github.com/DFE-Digital/early-careers-framework/blob/develop/swagger/v1/api_spec.json

Ideally change baseUrl to http://localhost:3000, since sandbox is used for testing. A bearer token is required per request and should be created in each respective environment e.g. development, sandbox

Linting

The precommit hook will ensure linting passes. See the hook for details.

End to End Scenario testing

We use Capybara for end-to-end tests. These can be found in the scenarios folder within ./spec/features/.

The E2E scenarios currently covered are:

1. Transferring a participant to a new School
2. Onboarding a withdraw participant to a new School

Scenarios tests use the :end_to_end_scenario tag so that they get excluded from the standard rspec command

Setup

RAILS_ENV=test bundle exec rake db:drop db:create db:schema:load

To run the complete set of scenario tests use either:

bundle exec bin/scenarios_ci

or

bundle exec bin/scenarios_ci --fail-fast

To run a specific scenario test include the environment variable SCENARIOS, for example to run scenarios 2, 12 and 20 use:

SCENARIOS=2,12,20 bundle exec bin/scenarios_ci

Please note: --fail-fast is recommended when running scenarios locally due to the length of time they can all take to run.

End to end browser testing

We use Cypress for end-to-end tests. This integrates with Axe for automated accessibility tests.

We aim to have an accessibility and snapshot test for every page on the service.

Setup

RAILS_ENV=test bin/rake db:create db:schema:load

Then in separate windows:

bin/rails server -e test -p 5017

yarn cypress:open

Moving to capybara

Features and user journeys are being migrated to Capybara as part of the feature scenarios and these can be run using:

bundle exec bin/features_ci

For more information on how we now write feature scenarios please our feature testing documentation

Smoke tests

We run smoke tests against review apps. After a review app is deployed, a smoke test will be run against it automatically.

Tests are written in rspec, so if you need to debug them, you can run them locally - just make sure to set the domain to the review app you want to debug against.

Review apps

Review apps are automatically created when a PR is opened. A link to the app will be posted on the review.

The database of the review app will be truncated and reseeded on each commit and subsequent deploy. This is to aid in manual testing using scenarios set up using seeds.

Deployment infrastructure

Aside from review apps (above), we have four deployed environments:

• dev, which has RAILS_ENV=deployed_development
• staging, which has RAILS_ENV=staging
• sandbox, which has RAILS_ENV=sandbox
• production, which has RAILS_ENV=production

These are deployed using terraform. See the documentation for details on terraform and debugging in deployed environments.

In addition to a web app, some environments have a worker app for running background jobs. For details, see the terraform code.

The /heathcheck endpoint on each deployed app will give details on things like version number, commit SHA, background jobs, and database migrations.

Creating an initial admin user

1. Follow the debugging instructions to gain SSH access to the instance and cd to the app dir
2. Run /usr/local/bin/bundle exec rake "admin:create[user name,[e-mail]]". For example, the command for a user named John Smith with the email [e-mail] would be /usr/local/bin/bundle exec rake "admin:create[John Smith,[e-mail]]".

The format here is important! Notice that there are no extra spaces in the square brackets, and no quote marks inside the square brackets

Importing School data

1. Make sure you have copied .env.template to .env and filled in the GIAS information with details from a teammate
2. Run bundle exec rake schools_data:import to import the latest schools data from GIAS. This takes around 10 minutes
3. Run bundle exec rake sparsity:import to populate the sparsity tables
4. Run bundle exec rake pupil_premium:import to populate the pupil premium tables

Note: running db:seed schedules the schools_data:import as a background. You can run bundle exe sidekiq to execute this in the background.

Resetting the database on a dev environment

Much like review apps, the dev database is truncated and reseeded on every merge to develop.

If the database needs to be reset for testing, there is a github action for this called Run task in dev space. The default parameters will reset the dev database. This action can also be used to run a rake task on dev or any review app.

Running background jobs locally

Background jobs are run using sidekiq, which relies on redis. You will need to install redis and run it using:

redis-server

This should run on *:6379, which sidekiq will expect outside of cloudfoundry.

And start sidekiq running using:

bundle exec sidekiq

Sending emails

We use Gov.UK Notify to send emails.

Mailshots to schools

We have a variety of emails that we send to schools on a regular basis. This are currently triggered manually, via rake task. The rake tasks are defined in schools.rake, for example:

bundle exec rake 'schools:send_invites[urn1 urn2 ...]'

Generating API access tokens for lead providers

bundle exec rake lead_provider:generate_token "name or id"

Run payment calculator for a given lead provider with an optional number of participants (default is 2,000) to generate the payment breakdown

bundle exec rake payment_calculation:breakdown "<name or id>" "<number of participants>"

Where "name or id" is a name or id from the lead_providers table.

Generating a token for E&L api

1. Get into Rails console for the environment you want to generate the token for.
2. Run EngageAndLearnApiToken.create_with_random_token!
3. Rails console should output a string, that's your unhashed token, you can keep it and use it to access E&L endpoints.

Feature Flags

Certain aspects of app behaviour are governed by a minimal implementation of feature flags. Feature flag states are persisted in the database with a name and an active state. To activate a new feature you can run Feature.create!(name: 'rate_limiting', active: true).

The available flags are listed in app/services/feature_flag.rb, and available in the constant FeatureFlag::FEATURES. Each one is tested with a dedicated spec in spec/features/feature_flags/.

payment_calculator

The code inlib/payment_calculator/ecf/performs payment calculations for ECFs (Early Career Framework) using commercial information so that training providers can be paid the correct amount.

The calculator can generate each intermediary step in the calculation so that any questions over how the final totals were reached can be answered by interested parties.

Output from PaymentCalculation.new(contract: <ContractObject>) will instantiate a calculator for that specific contract. This can then be called, passing in the retention event type, and total number of participants to calculate for. (There is also a class level call shortcut for this.) which means that for a one off calculation you can call PaymentCalculation.new(contract: <ContractObject>).call(event_type:, total_participants:), or PaymentCalculation.call({contract: <ContractObject>}, event_type:, total_participants:). (Note the brackets around the first hash. In this call format, that is what determines what is passed to the initializer and what goes to the call.)

Payment entity naming

Here are the names we are using in the code and specs for the different concepts involved in the calculations by way of an example:

Per participant price £995 >> per participant service fee £398 (40%) >> monthly service fee £27k >> total service fee £796k

Per participant price £995 >> per participant output payment £597 (60%) >> per participant output payment for a retention period £119 (20% (or 15% depending on the period) of 60%) >> output payment total for the retention period with 1900 retained participants £226k

• "Participants" includes both teachers and mentors.
• "Output payments" are payments made based on the performance of the training provider (i.e. their output).
• "Payment type" for start/retention_x/completion output payments.

Storing reasons in PaperTrail

Sometimes, we need to make manual changes to data. The reason for this change may not be obvious to those looking in the future. We version changes using PaperTrail, and when making an unusual change, we can set a reason to help those reading the change history.

To set a reason for an entire console session:

PaperTrail.request.controller_info = {reason: "some reason"}

To set a reason for a block:

PaperTrail.request(controller_info: {reason: "some reason"}) do
  # do something
end

Runbook

Updating NPQ applications from manual validation

This procedure is used after a batch from manual validation has been complete. The data also needs to be uploaded to the NPQ application as it uses a different database and there is no syncing procedure in place.

1. Log in to a container instance
2. Save CSV data to disk via vi and remember the path
3. Start rails console
4. Instantiate service with svc = Importers::NPQManualValidation.new(path_to_csv: Rails.root.join("batchX.csv"))
5. Call service with svc.call
6. Exit rails console
7. Delete CSV as no longer needed

Monitoring, logging, and alerting

Sentry

We use sentry.io for error tracking and performance monitoring. Ask a team member for access - this is done through digi-tools.

Logit

We use a logit.io ELK stack for log aggregation. This contains logs from all environments except review apps, and is useful for debugging failed deployments. Ask a team member for access - this is done through digi-tools.

Grafana

We have a prometheus/grafana stack for metrics and alerting - production metrics. Your DfE google account should work using SSO. See the terraform for details.

Statuscake

We use statuscake for uptime monitoring. Ask a team member for access - this is done with a service now ticket.

Analytics

In production, we use a separate postgres database for recording anonymous analytics information. The database is hosted in GCP.

Documentation

We use a gem called tech_docs_template to generate govuk-style documentation. It is heavily inspired by Teacher Training API.

You can find it, with its readme, in docs directory.

The project in docs directory can be used to generate a static site, which we put in public/api-reference to make our app serve it.