eldermoraes

public class TokenUtils {

    public static String generateToken() {

        SecureRandom random = new SecureRandom();
        long longToken = Math.abs(random.nextLong());
        return Long.toString(new Date().getTime()) + Long.toString(longToken, 16);

    }
}

eldermoraes

public class Auth {

    private String login;

    private String password;

    private Date loginDate;

    public Auth() {
    }

eldermoraes

@ApplicationScoped
public class AuthSession {

    private Map<String, Auth> authenticated;

    private Map<String, Auth> dataSource;

    @PostConstruct
    public void init() {

eldermoraes

@HEAD
@Path("/{token}")
public Response checkAuthentication(@PathParam("token") String token) {

    if (authSession.getAuthenticated().containsKey(token)) {

        return Response.ok().build();

    }

eldermoraes

@POST
@Consumes("application/x-www-form-urlencoded")
public Response login(@FormParam("login") String login, @FormParam("password") String password) {

    //If user already logged, then get it token 
    Optional<String> key = authSession.getToken(login, password);
    if (key.isPresent()) {

        return Response.ok(key.get()).build();

eldermoraes

@Path("auth")
public class AuthenticationResource {

    @Inject
    private AuthSession authSession;

    @POST
    @Consumes("application/x-www-form-urlencoded")
    public Response login(@FormParam("login") String login, @FormParam("password") String password) {

eldermoraes

private JsonObject asJsonObject(Book book, URI bookUri, 
  URI authorUri) {
    return Json.createObjectBuilder()
            .add("isbn", book.isbn)
            .add("title", book.title)
            .add("_links", Json.createObjectBuilder()
                    .add("self", Json.createObjectBuilder()
                            .add("href", bookUri.toString()))
                    .add("author", Json.createObjectBuilder()
                            .add("href", 

eldermoraes

URI authorUri = createAuthorResourceUri(book
              .authorId, uriInfo);

eldermoraes

static URI createAuthorResourceUri(Integer authorId, 
  UriInfo uriInfo) {
    return uriInfo.getBaseUriBuilder()
            .path(HateosResource.class)
            .path(HateosResource.class, "author")
            .path(AuthorResource.class, "author")
            .build(authorId);
}

eldermoraes

@GET
@Path("/{isbn}")
public Response book(@PathParam("isbn") String isbn) {
    Book book = books.get(isbn);
    URI bookUri = createBookResourceUri(isbn, uriInfo);
    URI authorUri = createAuthorResourceUri(book
      .authorId, uriInfo);
    return null;
}