func Git(provisioner provision.Provisioner, app provision.App, objID string, w io.Writer) error {
log.Write(w, []byte("\n ---> tsuru receiving push\n"))
log.Write(w, []byte("\n ---> Replicating the application repository across units\n"))
out, err := clone(provisioner, app)
if err != nil {
out, err = fetch(provisioner, app)
}
if err != nil {
msg := fmt.Sprintf("Got error while cloning/fetching repository: %s -- \n%s", err, string(out))
log.Write(w, []byte(msg))
return errors.New(msg)
}
out, err = checkout(provisioner, app, objID)
if err != nil {
msg := fmt.Sprintf("Failed to checkout Git repository: %s -- \n%s", err, string(out))
log.Write(w, []byte(msg))
return errors.New(msg)
}
log.Write(w, []byte("\n ---> Installing dependencies\n"))
if err := provisioner.InstallDeps(app, w); err != nil {
log.Write(w, []byte(err.Error()))
return err
}
log.Write(w, []byte("\n ---> Restarting application\n"))
if err := app.Restart(w); err != nil {
log.Write(w, []byte(err.Error()))
return err
}
return log.Write(w, []byte("\n ---> Deploy done!\n\n"))
}
// fetch runs a git fetch to update the code in the app.
//
// It works like Clone, fetching from the app remote repository.
func fetch(p provision.Provisioner, app provision.App) ([]byte, error) {
var buf bytes.Buffer
path, err := repository.GetPath()
if err != nil {
return nil, fmt.Errorf("tsuru is misconfigured: %s", err)
}
cmd := fmt.Sprintf("cd %s && git fetch origin", path)
err = p.ExecuteCommand(&buf, &buf, app, cmd)
b := buf.Bytes()
log.Debugf(`"git fetch" output: %s`, b)
return b, err
}
// checkout updates the Git repository of the app to the given version.
func checkout(p provision.Provisioner, app provision.App, version string) ([]byte, error) {
var buf bytes.Buffer
path, err := repository.GetPath()
if err != nil {
return nil, fmt.Errorf("tsuru is misconfigured: %s", err)
}
cmd := fmt.Sprintf("cd %s && git checkout %s", path, version)
if err := p.ExecuteCommand(&buf, &buf, app, cmd); err != nil {
return buf.Bytes(), err
}
return nil, nil
}
// Clone runs a git clone to clone the app repository in an app.
func clone(p provision.Provisioner, app provision.App) ([]byte, error) {
var buf bytes.Buffer
path, err := repository.GetPath()
if err != nil {
return nil, fmt.Errorf("tsuru is misconfigured: %s", err)
}
cmd := fmt.Sprintf("git clone %s %s --depth 1", repository.ReadOnlyURL(app.GetName()), path)
err = p.ExecuteCommand(&buf, &buf, app, cmd)
b := buf.Bytes()
log.Debugf(`"git clone" output: %s`, b)
return b, err
}