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@ -62,170 +62,172 @@ public class InvokerHandler extends HttpServlet {
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private static String serverUrl;
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private static String serverUrl;
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@Override protected void doPost(HttpServletRequest req, HttpServletResponse resp) {
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// @Override protected void doPost(HttpServletRequest req, HttpServletResponse resp) {
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try {
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// try {
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if (!validateRequest(req, resp)) {
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// if (!validateRequest(req, resp)) {
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return;
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// return;
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}
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// }
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//
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HttpRequestBase executor = constructExecutor(req);
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// HttpRequestBase executor = constructExecutor(req);
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if (executor == null) {
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// if (executor == null) {
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resp.sendError(HTTP_BAD_REQUEST, "Bad Request, method: " + method + " is not supported");
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// resp.sendError(HTTP_BAD_REQUEST, "Bad Request, method: " + method + " is not supported");
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return;
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// return;
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}
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// }
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String accessToken = authData.getAccessToken();
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// String accessToken = authData.getAccessToken();
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executor.setHeader("Authorization", "Bearer " + accessToken);
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// executor.setHeader("Authorization", "Bearer " + accessToken);
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//
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HttpResponse response = execute(executor);
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// String result = execute(executor, HttpStatus.SC_OK);
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if (response == null) {
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//
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resp.sendError(HTTP_INTERNAL_ERROR, "Empty response retried for the API call.");
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//// unauthorized
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return;
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//// if (response == null) {
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}
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//// resp.sendError(HTTP_INTERNAL_ERROR, "Empty response retried for the API call.");
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//// return;
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int responseCode = response.getStatusLine().getStatusCode();
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//// }
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String result = retrieveResponseString(response);
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//
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//// int responseCode = response.getStatusLine().getStatusCode();
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if (responseCode == HttpStatus.SC_UNAUTHORIZED && (result.contains("Access token expired") || result
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//// String result = retrieveResponseString(response);
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.contains("Invalid input. Access token validation failed"))) {
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//
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if (!refreshToken(req, resp)) {
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// if (responseCode == HttpStatus.SC_UNAUTHORIZED && (result.contains("Access token expired") || result
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return;
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// .contains("Invalid input. Access token validation failed"))) {
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}
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// if (!refreshToken(req, resp)) {
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response = execute(executor);
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// return;
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if (response == null) {
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// }
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resp.sendError(HTTP_INTERNAL_ERROR, "Empty response retried for the token renewal API call.");
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// response = execute(executor);
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return;
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// if (response == null) {
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}
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// resp.sendError(HTTP_INTERNAL_ERROR, "Empty response retried for the token renewal API call.");
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responseCode = response.getStatusLine().getStatusCode();
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// return;
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result = retrieveResponseString(response);
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// }
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}
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// responseCode = response.getStatusLine().getStatusCode();
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if (responseCode != HttpStatus.SC_OK && responseCode != HttpStatus.SC_CREATED) {
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// result = retrieveResponseString(response);
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resp.sendError(responseCode, "Error response retrieved for the API call.");
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// }
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return;
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// if (responseCode != HttpStatus.SC_OK && responseCode != HttpStatus.SC_CREATED) {
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}
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// resp.sendError(responseCode, "Error response retrieved for the API call.");
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try (PrintWriter writer = resp.getWriter()) {
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// return;
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writer.write(result);
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// }
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}
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// try (PrintWriter writer = resp.getWriter()) {
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} catch (IOException e) {
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// writer.write(result);
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log.error("Error occured when processing invoke call.", e);
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// }
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}
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// } catch (IOException e) {
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}
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// log.error("Error occured when processing invoke call.", e);
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// }
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/***
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// }
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*
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//
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* @param req {@link HttpServletRequest}
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// /***
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* @return {@link HttpRequestBase} if method equals to either GET, POST, PUT or DELETE otherwise returns NULL.
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// *
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*/
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// * @param req {@link HttpServletRequest}
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private HttpRequestBase constructExecutor(HttpServletRequest req) {
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// * @return {@link HttpRequestBase} if method equals to either GET, POST, PUT or DELETE otherwise returns NULL.
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String payload = req.getParameter("payload");
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// */
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String contentType = req.getParameter("content-type");
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// private HttpRequestBase constructExecutor(HttpServletRequest req) {
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if (contentType == null || contentType.isEmpty()) {
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// String payload = req.getParameter("payload");
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contentType = ContentType.APPLICATION_JSON.toString();
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// String contentType = req.getParameter("content-type");
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}
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// if (contentType == null || contentType.isEmpty()) {
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// contentType = ContentType.APPLICATION_JSON.toString();
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HttpRequestBase executor;
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// }
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if (HttpGet.METHOD_NAME.equalsIgnoreCase(method)) {
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//
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executor = new HttpGet(serverUrl + HandlerConstants.API_COMMON_CONTEXT + apiEndpoint);
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// HttpRequestBase executor;
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} else if (HttpPost.METHOD_NAME.equalsIgnoreCase(method)) {
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// if (HttpGet.METHOD_NAME.equalsIgnoreCase(method)) {
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executor = new HttpPost(serverUrl + HandlerConstants.API_COMMON_CONTEXT + apiEndpoint);
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// executor = new HttpGet(serverUrl + HandlerConstants.API_COMMON_CONTEXT + apiEndpoint);
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StringEntity payloadEntity = new StringEntity(payload, ContentType.create(contentType));
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// } else if (HttpPost.METHOD_NAME.equalsIgnoreCase(method)) {
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((HttpPost) executor).setEntity(payloadEntity);
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// executor = new HttpPost(serverUrl + HandlerConstants.API_COMMON_CONTEXT + apiEndpoint);
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} else if (HttpPut.METHOD_NAME.equalsIgnoreCase(method)) {
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// StringEntity payloadEntity = new StringEntity(payload, ContentType.create(contentType));
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executor = new HttpPut(serverUrl + HandlerConstants.API_COMMON_CONTEXT + apiEndpoint);
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// ((HttpPost) executor).setEntity(payloadEntity);
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StringEntity payloadEntity = new StringEntity(payload, ContentType.create(contentType));
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// } else if (HttpPut.METHOD_NAME.equalsIgnoreCase(method)) {
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((HttpPut) executor).setEntity(payloadEntity);
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// executor = new HttpPut(serverUrl + HandlerConstants.API_COMMON_CONTEXT + apiEndpoint);
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} else if (HttpDelete.METHOD_NAME.equalsIgnoreCase(method)) {
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// StringEntity payloadEntity = new StringEntity(payload, ContentType.create(contentType));
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executor = new HttpDelete(serverUrl + HandlerConstants.API_COMMON_CONTEXT + apiEndpoint);
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// ((HttpPut) executor).setEntity(payloadEntity);
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} else {
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// } else if (HttpDelete.METHOD_NAME.equalsIgnoreCase(method)) {
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return null;
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// executor = new HttpDelete(serverUrl + HandlerConstants.API_COMMON_CONTEXT + apiEndpoint);
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}
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// } else {
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return executor;
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// return null;
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}
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// }
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// return executor;
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/***
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// }
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*
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//
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* @param req {@link HttpServletRequest}
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// /***
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* @param resp {@link HttpServletResponse}
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// *
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* @return If request is a valid one, returns TRUE, otherwise return FALSE
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// * @param req {@link HttpServletRequest}
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* @throws IOException If and error occurs while witting error response to client side
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// * @param resp {@link HttpServletResponse}
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*/
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// * @return If request is a valid one, returns TRUE, otherwise return FALSE
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private static boolean validateRequest(HttpServletRequest req, HttpServletResponse resp) throws IOException {
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// * @throws IOException If and error occurs while witting error response to client side
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HttpSession session = req.getSession(false);
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// */
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if (session == null) {
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// private static boolean validateRequest(HttpServletRequest req, HttpServletResponse resp) throws IOException {
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resp.sendError(HTTP_UNAUTHORIZED, "Unauthorized, You are not logged in. Please log in to the portal");
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// HttpSession session = req.getSession(false);
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return false;
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// if (session == null) {
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}
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// resp.sendError(HTTP_UNAUTHORIZED, "Unauthorized, You are not logged in. Please log in to the portal");
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authData = (AuthData) session.getAttribute(HandlerConstants.SESSION_AUTH_DATA_KEY);
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// return false;
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if (authData == null) {
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// }
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resp.sendError(HTTP_UNAUTHORIZED, "Unauthorized, Access token couldn't found in the current session");
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// authData = (AuthData) session.getAttribute(HandlerConstants.SESSION_AUTH_DATA_KEY);
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return false;
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// if (authData == null) {
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}
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// resp.sendError(HTTP_UNAUTHORIZED, "Unauthorized, Access token couldn't found in the current session");
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// return false;
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apiEndpoint = req.getParameter("api-endpoint");
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// }
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method = req.getParameter("method");
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//
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// apiEndpoint = req.getParameter("api-endpoint");
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serverUrl = req.getScheme() + "://" + req.getServerName() + ":" + req.getServerPort();
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// method = req.getParameter("method");
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if (apiEndpoint == null || method == null) {
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//
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resp.sendError(HTTP_BAD_REQUEST, "Bad Request, Either api-endpoint or method is empty");
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// serverUrl = req.getScheme() + "://" + req.getServerName() + ":" + req.getServerPort();
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return false;
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// if (apiEndpoint == null || method == null) {
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}
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// resp.sendError(HTTP_BAD_REQUEST, "Bad Request, Either api-endpoint or method is empty");
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return true;
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// return false;
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}
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// }
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// return true;
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/***
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// }
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*
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//
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* @param req {@link HttpServletRequest}
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// /***
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* @param resp {@link HttpServletResponse}
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// *
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* @return If successfully renew tokens, returns TRUE otherwise return FALSE
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// * @param req {@link HttpServletRequest}
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* @throws IOException If and error occurs while witting error response to client side or invoke token renewal API
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// * @param resp {@link HttpServletResponse}
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*/
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// * @return If successfully renew tokens, returns TRUE otherwise return FALSE
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private static boolean refreshToken(HttpServletRequest req, HttpServletResponse resp) throws IOException {
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// * @throws IOException If and error occurs while witting error response to client side or invoke token renewal API
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log.debug("refreshing the token");
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// */
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HttpPost tokenEndpoint = new HttpPost(
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// private static boolean refreshToken(HttpServletRequest req, HttpServletResponse resp) throws IOException {
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serverUrl + HandlerConstants.API_COMMON_CONTEXT + HandlerConstants.TOKEN_ENDPOINT);
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// log.debug("refreshing the token");
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HttpSession session = req.getSession(false);
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// HttpPost tokenEndpoint = new HttpPost(
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if (session == null) {
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// serverUrl + HandlerConstants.API_COMMON_CONTEXT + HandlerConstants.TOKEN_ENDPOINT);
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resp.sendError(HTTP_UNAUTHORIZED, "Session is expired. Please log in to the server.");
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// HttpSession session = req.getSession(false);
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return false;
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// if (session == null) {
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}
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// resp.sendError(HTTP_UNAUTHORIZED, "Session is expired. Please log in to the server.");
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// return false;
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StringEntity tokenEndpointPayload = new StringEntity(
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// }
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"grant_type=refresh_token&refresh_token=" + authData.getRefreshToken() + "&scope=PRODUCTION",
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//
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ContentType.APPLICATION_FORM_URLENCODED);
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// StringEntity tokenEndpointPayload = new StringEntity(
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// "grant_type=refresh_token&refresh_token=" + authData.getRefreshToken() + "&scope=PRODUCTION",
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tokenEndpoint.setEntity(tokenEndpointPayload);
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// ContentType.APPLICATION_FORM_URLENCODED);
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String encodedClientApp = authData.getEncodedClientApp();
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//
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tokenEndpoint.setHeader("Authorization", "Basic " + encodedClientApp);
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// tokenEndpoint.setEntity(tokenEndpointPayload);
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tokenEndpoint.setHeader("Content-Type", ContentType.APPLICATION_FORM_URLENCODED.toString());
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// String encodedClientApp = authData.getEncodedClientApp();
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// tokenEndpoint.setHeader("Authorization", "Basic " + encodedClientApp);
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HttpResponse response = execute(tokenEndpoint);
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// tokenEndpoint.setHeader("Content-Type", ContentType.APPLICATION_FORM_URLENCODED.toString());
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if (response == null) {
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//
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resp.sendError(HTTP_INTERNAL_ERROR,
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// HttpResponse response = execute(tokenEndpoint);
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"Internal Server Error, response of the token refresh API call is null.");
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// if (response == null) {
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return false;
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// resp.sendError(HTTP_INTERNAL_ERROR,
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} else if ((response.getStatusLine().getStatusCode() != HttpStatus.SC_OK)) {
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// "Internal Server Error, response of the token refresh API call is null.");
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resp.sendError(response.getStatusLine().getStatusCode(),
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// return false;
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"Error occured while getting new access token by using refresh token.");
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// } else if ((response.getStatusLine().getStatusCode() != HttpStatus.SC_OK)) {
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return false;
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// resp.sendError(response.getStatusLine().getStatusCode(),
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}
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// "Error occured while getting new access token by using refresh token.");
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String tokenResult = retrieveResponseString(response);
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// return false;
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JsonParser jsonParser = new JsonParser();
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// }
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// String tokenResult = retrieveResponseString(response);
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JsonElement jTokenResult = jsonParser.parse(tokenResult);
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// JsonParser jsonParser = new JsonParser();
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if (jTokenResult.isJsonObject()) {
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//
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JsonObject jTokenResultAsJsonObject = jTokenResult.getAsJsonObject();
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// JsonElement jTokenResult = jsonParser.parse(tokenResult);
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AuthData newAuthData = new AuthData();
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// if (jTokenResult.isJsonObject()) {
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// JsonObject jTokenResultAsJsonObject = jTokenResult.getAsJsonObject();
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newAuthData.setAccessToken(jTokenResultAsJsonObject.get("access_token").getAsString());
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// AuthData newAuthData = new AuthData();
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newAuthData.setRefreshToken(jTokenResultAsJsonObject.get("refresh_token").getAsString());
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//
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newAuthData.setScope(jTokenResultAsJsonObject.get("scope").getAsString());
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// newAuthData.setAccessToken(jTokenResultAsJsonObject.get("access_token").getAsString());
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newAuthData.setClientId(authData.getClientId());
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// newAuthData.setRefreshToken(jTokenResultAsJsonObject.get("refresh_token").getAsString());
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newAuthData.setClientSecret(authData.getClientSecret());
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// newAuthData.setScope(jTokenResultAsJsonObject.get("scope").getAsString());
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newAuthData.setEncodedClientApp(authData.getEncodedClientApp());
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// newAuthData.setClientId(authData.getClientId());
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newAuthData.setUsername(authData.getUsername());
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// newAuthData.setClientSecret(authData.getClientSecret());
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authData = newAuthData;
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// newAuthData.setEncodedClientApp(authData.getEncodedClientApp());
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session.setAttribute(HandlerConstants.SESSION_AUTH_DATA_KEY, newAuthData);
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// newAuthData.setUsername(authData.getUsername());
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return true;
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// authData = newAuthData;
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}
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// session.setAttribute(HandlerConstants.SESSION_AUTH_DATA_KEY, newAuthData);
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return false;
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// return true;
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}
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// }
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// return false;
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// }
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}
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}
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Jayasanka
6 years ago