group.go

package container

import (
	"gopkg.in/yaml.v2"
	"io/ioutil"
)

// Group represents a set of containers
type Group struct {
	Version string            `yaml:"version"`
	Members map[string]Member `yaml:"services"`
}

// GroupFromYAML initializes a Group struct from yaml file
func GroupFromYAML(file string) (*Group, error) {
	data, err := ioutil.ReadFile(file)
	if err != nil {
		return nil, err
	}
	var g Group
	if err := yaml.Unmarshal(data, &g); err != nil {
		return nil, err
	}
	return &g, nil
}

// Create creates the containes defined inside the group
func (g *Group) Create() error {
	for name, member := range g.Members {
		if err := member.Create(name); err != nil {
			return err
		}
		if err := member.RunCommand(); err != nil {
			return err
		}
	}
	return nil
}