spud/service_definition/main.go

package service_definition

import (
	"os"

	"github.com/goccy/go-yaml"
)

type VolumeDefinition struct {
	Name string `yaml:"name"`
}

type PortMapping struct {
	Host      string `yaml:"host"`
	Container string `yaml:"container"`
	Type      string `yaml:"type"`
}

type VolumeConfiguration struct {
	Name      string `yaml:"name"`
	Container string `yaml:"container"`
	Host      string `yaml:"host"`
	ReadOnly  bool   `yaml:"readonly"`
}

type ContainerDefinition struct {
	Name      string                `yaml:"name"`
	Image     string                `yaml:"image"`
	Volumes   []VolumeConfiguration `yaml:"volumes"`
	EnvFile   string                `yaml:"env-file"`
	ExtraArgs []string              `yaml:"extra-args"`
}

type ServiceDefinition struct {
	Name       string                `yaml:"name"`
	Volumes    []VolumeDefinition    `yaml:"volumes"`
	Containers []ContainerDefinition `yaml:"containers"`
	Ports      []PortMapping         `yaml:"ports"`
}

func GetServiceDefinitionFromFile(path string) (ServiceDefinition, error) {
	var definition ServiceDefinition

	defData, err := os.ReadFile(path)

	if err != nil {
		return ServiceDefinition{}, &FileDoesNotExistError{Message: "Could not find service configuration file", ExpectedPath: path}
	}

	if err = yaml.Unmarshal(defData, &definition); err != nil {
		return ServiceDefinition{}, &InvalidServiceDefinitionError{Path: path}
	}

	return definition, nil
}