func validateReferencesExist()

in config/config.go [164:211]
43 lines of code
13 McCabe index (conditional complexity)

func validateReferencesExist(c *configpb.Configuration) error {
	var mErr error
	if c == nil {
		return multierror.Append(mErr, errors.New("got an empty config.Configuration"))
	}

	tgNames := map[string]bool{}
	for _, tg := range c.GetTestGroups() {
		tgNames[tg.GetName()] = true
	}
	tgInTabs := map[string]bool{}
	for _, dash := range c.GetDashboards() {
		for _, tab := range dash.DashboardTab {
			tabTg := tab.TestGroupName
			tgInTabs[tabTg] = true
			// Verify that each Test Group referenced by a Dashboard Tab exists.
			if _, ok := tgNames[tabTg]; !ok {
				mErr = multierror.Append(mErr, MissingEntityError{tabTg, "TestGroup"})
			}
		}
	}
	// Likewise, each Test Group must be referenced by a Dashboard Tab, so each Test Group gets displayed.
	for tgName := range tgNames {
		if _, ok := tgInTabs[tgName]; !ok {
			mErr = multierror.Append(mErr, ValidationError{tgName, "TestGroup", "Each Test Group must be referenced by at least 1 Dashboard Tab."})
		}
	}

	dashNames := map[string]bool{}
	for _, dash := range c.GetDashboards() {
		dashNames[dash.Name] = true
	}
	dashToDg := map[string]bool{}
	for _, dg := range c.GetDashboardGroups() {
		for _, name := range dg.DashboardNames {
			dgDash := name
			if _, ok := dashNames[dgDash]; !ok {
				// The Dashboards each Dashboard Group references must exist.
				mErr = multierror.Append(mErr, MissingEntityError{dgDash, "Dashboard"})
			} else if _, ok = dashToDg[dgDash]; ok {
				mErr = multierror.Append(mErr, ValidationError{dgDash, "Dashboard", "A Dashboard cannot be in more than 1 Dashboard Group."})
			} else {
				dashToDg[dgDash] = true
			}
		}
	}
	return mErr
}