README

Description

Prototype application to display hierarchical structure as HTML page.

This application is treated as a learning project to get familiar with the Go language and its libraries.

The model is hard coded into the application with the structure of Group > Service > Component. The data is stored in pkl (https://pkl-lang.org) format and can be dynamically changed. The created HTML page uses Go templates for easy rendering and can also be dynamically changed.

Local Development in Go

Running the Application Locally

To run the application, use the following command:

go run .

Then, open the following URL in a browser:

http://localhost:8080

Updating Dependencies

To update the dependencies, use the following command:

go mod tidy

Formatting the Source Code

To format the source code, use the following command:

go fmt ./...

Testing

How to Run Tests

To run the tests, use the following command:

go test ./...

Running Tests with Coverage

To run the tests with coverage, use the following command:

go test -coverpkg=./... ./...

Working with Pkl

Pkl Installation

Cli pkl command can be installed with e.g. homebrew using following command:

brew install pkl

Converting Pkl data to YAML

Converting pkl data to YAML can be done with following command:

pkl eval pkl/data/data.pkl -f yaml

Go Code Generation using Pkl

Go code generator is separate cli tool pkl-gen-go. Check installation instructions from Pkl documentation.

Generate code with following command:

~/go/bin/pkl-gen-go pkl/templates/Data.pkl --base-path github.com/mkuokkanen/servicemap

Generated code is in path pkl/gen/ and is committed to git.

Docker image

Build docker image

docker build -t servicemap .

Run image build

docker run -p9090:9090 servicemap:latest