Development

• Technologies
• Development Environment
• Getting Started
• Deployment
  • Google Cloud

Technologies

• Programming language: Haskell
• Dependency management: Stack
• Backend: SQLite
• Database access: sqlite-simple
• Command line parsing: Optparse Applicative
• Formatting: Prettyprinter
• Prelude: Protolude
• IDs: ULID
• Desktop App: Declarative GTK

Development Environment

The recommended way to develop Haskell is with VS Code and the Haskell Language Server.

Getting Started

Check out the makefile for all development tasks.

The most important command is make test to run the tests after any changes. They should always pass before committing.

To try out local changes via the CLI you can use the following command:

stack run -- add "Buy milk"

Deployment

Google Cloud

docker tag adius/tasklite-tasklite:latest gcr.io/deploy-219812/tasklite:latest

docker push gcr.io/deploy-219812/tasklite:latest

kubectl create -f kubernetes/deployment.yaml

kubectl port-forward tasklite-deployment-77884ff4f6-66sjf 8001

Open 127.0.0.1:8001

docker build \
  --file dockerfiles/nginx-proxy \
  --tag gcr.io/deploy-219812/nginx-proxy:latest \
  dockerfiles; \
and docker push gcr.io/deploy-219812/nginx-proxy:latest; \
and kubectl replace --filename kubernetes/deployment.yaml --force; \
and sleep 8;
and kubectl port-forward \
  (kubectl get pods --selector app=tasklite --output name) 8080

Afterwards change the health check URL to /healthcheck for the load balancer at https://console.cloud.google.com/compute/healthChecks.