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pull.go
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pull.go
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package cmd
import (
"errors"
"fmt"
"io"
)
type Pull struct {
UI UI
App App
FS FS
Help Help
Config Config
}
func (p *Pull) Match(args []string) bool {
return len(args) > 0 && args[0] == "pull"
}
func (p *Pull) Run(args []string) error {
if len(args) != 2 {
p.Help.Short()
if len(args) < 2 {
return errors.New("app name required")
}
return errors.New("invalid arguments")
}
name := args[1]
if err := p.saveDroplet(name); err != nil {
return err
}
if err := p.updateLocalYML(name); err != nil {
return err
}
p.UI.Output("Successfully downloaded: %s", name)
return nil
}
func (p *Pull) saveDroplet(name string) error {
droplet, size, err := p.App.Droplet(name)
if err != nil {
return err
}
defer droplet.Close()
file, err := p.FS.WriteFile(fmt.Sprintf("./%s.droplet", name))
if err != nil {
return err
}
defer file.Close()
if _, err := io.CopyN(file, droplet, size); err != nil && err != io.EOF {
return err
}
return nil
}
func (p *Pull) updateLocalYML(name string) error {
localYML, err := p.Config.Load()
if err != nil {
return err
}
app := getAppConfig(name, localYML)
env, err := p.App.Env(name)
if err != nil {
return err
}
app.StagingEnv = env.Staging
app.RunningEnv = env.Running
app.Env = env.App
command, err := p.App.Command(name)
if err != nil {
return err
}
app.Command = command
if err := p.Config.Save(localYML); err != nil {
return err
}
return nil
}