api/app.go
func addLog(w http.ResponseWriter, r *http.Request, t auth.Token) error {
	a, err := app.GetByName(r.URL.Query().Get(":app"))
	if err != nil {
		return err
	}
	if t.GetAppName() != app.InternalAppName {
		allowed := permission.Check(t, permission.PermAppUpdateLog,
			contextsForApp(a)...,
		)
		if !allowed {
			return permission.ErrUnauthorized
		}
	}
	logs, _ := InputValues(r, "message")
	source := InputValue(r, "source")
	if source == "" {
		source = "app"
	}
	unit := InputValue(r, "unit")
	for _, log := range logs {
		err := a.Log(log, source, unit)
		if err != nil {
			return err
		}
	}
	return nil
}
func addLog(w http.ResponseWriter, r *http.Request, t auth.Token) error {
	a, err := app.GetByName(r.URL.Query().Get(":app"))
	if err != nil {
		return err
	}
	if t.GetAppName() != app.InternalAppName {
		allowed := permission.Check(t, permission.PermAppUpdateLog,
			contextsForApp(a)...,
		)
		if !allowed {
			return permission.ErrUnauthorized
		}
	}
	logs, _ := InputValues(r, "message")
	source := InputValue(r, "source")
	if source == "" {
		source = "app"
	}
	unit := InputValue(r, "unit")
	for _, log := range logs {
		err := a.Log(log, source, unit)
		if err != nil {
			return err
		}
	}
	return nil
}
// title: app log
// path: /apps/{app}/log
// method: POST
// consume: application/x-www-form-urlencoded
// responses:
//   200: Ok
//   400: Invalid data
//   401: Unauthorized
//   404: App not found