Method initModule

modules/modules.go:116–156

(name string, initMap map[string]bool, servicesMap map[string]services.Service)

}

func (m *Manager) initModule(name string, initMap map[string]bool, servicesMap map[string]services.Service) error {
	if _, ok := m.modules[name]; !ok {
		return fmt.Errorf("unrecognised module name: %s", name)
	}

	// initialize all of our dependencies first
	deps := m.orderedDeps(name)
	deps = append(deps, name) // lastly, initialize the requested module

	for _, n := range deps {
		// Skip already initialized modules
		if initMap[n] {
			continue
		}

		mod := m.modules[n]

		var serv services.Service

		if mod.initFn != nil {
			s, err := mod.initFn()
			if err != nil {
				return errors.Wrap(err, fmt.Sprintf("error initialising module: %s", n))
			}

			if s != nil {
				// We pass servicesMap, which isn't yet complete. By the time service starts,
				// it will be fully built, so there is no need for extra synchronization.
				serv = newModuleServiceWrapper(servicesMap, n, m.logger, s, m.DependenciesForModule(n), m.inverseDependenciesForModule(n))
			}
		}

		if serv != nil {
			servicesMap[n] = serv
		}

		initMap[n] = true
	}

	return nil
}

// UserVisibleModuleNames gets list of module names that are
// user visible. Returned list is sorted in increasing order.