org.eclipse.mdm.nucleus/org.eclipse.mdm.application/src/main/webapp/src/app/authentication/authguard.ts

import { Injectable } from '@angular/core';
import { CanActivate } from '@angular/router/src/utils/preactivation';
import { ActivatedRouteSnapshot, RouterStateSnapshot } from '@angular/router';

import { AuthenticationService } from './authentication.service';

@Injectable({
    providedIn: 'root'
})
export class AuthGuard implements CanActivate {
    path: ActivatedRouteSnapshot[];
    route: ActivatedRouteSnapshot;

    constructor(private authStateService: AuthenticationService) { }

    canActivate(route: ActivatedRouteSnapshot, state: RouterStateSnapshot) {
        if (route.data.roles) {
            // check if current user has any role the route requires
            return this.authStateService.isUserInRole(route.data.roles);
        }
        return true;
    }
}