public void initiateExternalAuth(Resource resource, Request request, Response response) {
ExternalIdentityProvider eip = getSelectedIP(request);
if (eip == null) {
// means that the user needs to select an identity provider, so generate appropriate page
} else {
eip.initiateExternalAuth(resource, request, response);
}
}
private ExternalIdentityProvider getSelectedIP(Request request) {
List<ExternalIdentityProvider> list = authenticationService.getExternalIdentityProviders();
if (list.size() == 1) {
return list.get(0);
} else {
String ipName = request.getParams().get("_ip");
if (ipName != null && ipName.length() > 0) {
for (ExternalIdentityProvider eip : list) {
if (ipName.equals(eip.getName())) {
return eip;
}
}
}
return null;
}
}