private String loadCustomers(HttpServletRequest req, String refreshToken)
throws ServletException, IOException {
// Retrieve accessToken first with usage of refresh (offline) token from DB
String accessToken = null;
try {
KeycloakDeployment deployment = getDeployment(req);
AccessTokenResponse response = ServerRequest.invokeRefresh(deployment, refreshToken);
accessToken = response.getToken();
} catch (ServerRequest.HttpFailure failure) {
return "Failed to refresh token. Status from auth-server request: "
+ failure.getStatus()
+ ", Error: "
+ failure.getError();
}
// Load customers now
HttpGet get =
new HttpGet(UriUtils.getOrigin(req.getRequestURL().toString()) + "/database/customers");
get.addHeader("Authorization", "Bearer " + accessToken);
HttpResponse response = getHttpClient().execute(get);
InputStream is = response.getEntity().getContent();
try {
if (response.getStatusLine().getStatusCode() != 200) {
return "Error when loading customer. Status: "
+ response.getStatusLine().getStatusCode()
+ ", error: "
+ StreamUtil.readString(is);
} else {
List<String> list = JsonSerialization.readValue(is, TypedList.class);
StringBuilder result = new StringBuilder();
for (String customer : list) {
result.append(customer + "<br />");
}
return result.toString();
}
} finally {
is.close();
}
}
public AccessTokenResponse resolveBearerToken(String redirectUri, String code)
throws IOException, ServerRequest.HttpFailure {
return ServerRequest.invokeAccessCodeToToken(
client, publicClient, code, codeUrl, redirectUri, clientId, credentials);
}
public AccessTokenResponse refreshToken(String refreshToken)
throws IOException, ServerRequest.HttpFailure {
return ServerRequest.invokeRefresh(
client, publicClient, refreshToken, refreshUrl, clientId, credentials);
}