private OAuthToken getToken() throws RESTException {
try {
final AppConfig cfg = AppConfig.getInstance();
final String path = "WEB-INF/token.properties";
final String tokenFile = getServletContext().getRealPath(path);
OAuthToken token = OAuthToken.loadToken(tokenFile);
if (token == null || token.isAccessTokenExpired()) {
final String endpoint = cfg.getFQDN() + OAuthService.API_URL;
final String clientId = cfg.getClientId();
final String clientSecret = cfg.getClientSecret();
final OAuthService service =
new OAuthService(getRESTConfig(endpoint), clientId, clientSecret);
token = service.getToken(cfg.getProperty("scope"));
token.saveToken(tokenFile);
}
return token;
} catch (IOException ioe) {
throw new RESTException(ioe);
}
}
