This commit implements the related HTTP methods in the request interceptor servlet to intercept and send the request to the backend. Also refactored the module name request-handler -> ui-request-interceptor. Fixes entgra/product-iots#108merge-requests/127/head
Madawa Soysa
5 years ago
parent
368186f573
commit
2260bd004d
@ -1,240 +0,0 @@
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/*
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* Copyright (c) 2019, Entgra (Pvt) Ltd. (http://www.entgra.io) All Rights Reserved.
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*
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* Entgra (Pvt) Ltd. licenses this file to you under the Apache License,
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* Version 2.0 (the "License"); you may not use this file except
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* in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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package io.entgra.request.handler;
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import com.google.gson.JsonElement;
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import com.google.gson.JsonObject;
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import com.google.gson.JsonParser;
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import io.entgra.request.handler.beans.AuthData;
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import io.entgra.request.handler.util.HandlerConstants;
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import io.entgra.request.handler.util.HandlerUtil;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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import org.apache.http.HttpStatus;
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import org.apache.http.client.methods.HttpDelete;
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import org.apache.http.client.methods.HttpGet;
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import org.apache.http.client.methods.HttpPost;
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import org.apache.http.client.methods.HttpPut;
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import org.apache.http.client.methods.HttpRequestBase;
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import org.apache.http.entity.ContentType;
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import org.apache.http.entity.StringEntity;
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import org.wso2.carbon.device.application.mgt.common.ProxyResponse;
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import javax.servlet.annotation.MultipartConfig;
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import javax.servlet.annotation.WebServlet;
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import javax.servlet.http.HttpServlet;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import javax.servlet.http.HttpSession;
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import java.io.IOException;
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import static io.entgra.request.handler.util.HandlerUtil.execute;
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import static java.net.HttpURLConnection.HTTP_BAD_REQUEST;
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@MultipartConfig
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@WebServlet("/invoke")
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public class InvokerHandler extends HttpServlet {
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private static final Log log = LogFactory.getLog(LoginHandler.class);
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private static final long serialVersionUID = -6508020875358160165L;
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private static AuthData authData;
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private static String apiEndpoint;
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private static String method;
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private static String serverUrl;
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private static String platform;
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@Override
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protected void doPost(HttpServletRequest req, HttpServletResponse resp) {
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try {
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if (!validateRequest(req, resp)) {
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return;
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}
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HttpRequestBase executor = constructExecutor(req);
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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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return;
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}
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executor.setHeader(HandlerConstants.AUTHORIZATION_HEADER_KEY, "Bearer " + authData.getAccessToken());
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ProxyResponse proxyResponse = execute(executor);
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if (HandlerConstants.TOKEN_IS_EXPIRED.equals(proxyResponse.getExecutorResponse())) {
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if (!refreshToken(req, resp)) {
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return;
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}
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executor.setHeader(HandlerConstants.AUTHORIZATION_HEADER_KEY, "Bearer " + authData.getAccessToken());
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proxyResponse = execute(executor);
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if (proxyResponse.getExecutorResponse().contains(HandlerConstants.EXECUTOR_EXCEPTION_PREFIX)) {
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log.error("Error occurred while invoking the API after refreshing the token.");
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HandlerUtil.handleError(req, resp, serverUrl, platform, proxyResponse);
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return;
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}
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}
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if (proxyResponse.getExecutorResponse().contains(HandlerConstants.EXECUTOR_EXCEPTION_PREFIX)) {
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log.error("Error occurred while invoking the API endpoint.");
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HandlerUtil.handleError(req, resp, serverUrl, platform, proxyResponse);
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return;
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}
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HandlerUtil.handleSuccess(req, resp, serverUrl, platform, proxyResponse);
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} catch (IOException e) {
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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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* @param req {@link HttpServletRequest}
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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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private HttpRequestBase constructExecutor(HttpServletRequest req) {
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String payload = req.getParameter("payload");
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String contentType = req.getParameter("content-type");
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if (contentType == null || contentType.isEmpty()) {
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contentType = ContentType.APPLICATION_JSON.toString();
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}
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HttpRequestBase executor;
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if (HttpGet.METHOD_NAME.equalsIgnoreCase(method)) {
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executor = new HttpGet(serverUrl + HandlerConstants.API_COMMON_CONTEXT + apiEndpoint);
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} else if (HttpPost.METHOD_NAME.equalsIgnoreCase(method)) {
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executor = new HttpPost(serverUrl + HandlerConstants.API_COMMON_CONTEXT + apiEndpoint);
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StringEntity payloadEntity = new StringEntity(payload, ContentType.create(contentType));
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((HttpPost) executor).setEntity(payloadEntity);
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} else if (HttpPut.METHOD_NAME.equalsIgnoreCase(method)) {
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executor = new HttpPut(serverUrl + HandlerConstants.API_COMMON_CONTEXT + apiEndpoint);
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StringEntity payloadEntity = new StringEntity(payload, ContentType.create(contentType));
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((HttpPut) executor).setEntity(payloadEntity);
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} else if (HttpDelete.METHOD_NAME.equalsIgnoreCase(method)) {
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executor = new HttpDelete(serverUrl + HandlerConstants.API_COMMON_CONTEXT + apiEndpoint);
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} else {
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return null;
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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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* @param req {@link HttpServletRequest}
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* @param resp {@link HttpServletResponse}
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* @return If request is a valid one, returns TRUE, otherwise return FALSE
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* @throws IOException If and error occurs while witting error response to client side
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*/
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private static boolean validateRequest(HttpServletRequest req, HttpServletResponse resp) throws IOException {
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serverUrl = req.getScheme() + "://" + req.getServerName() + ":" + req.getServerPort();
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apiEndpoint = req.getParameter("api-endpoint");
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method = req.getParameter("method");
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HttpSession session = req.getSession(false);
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if (session == null) {
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log.error("Unauthorized, You are not logged in. Please log in to the portal");
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ProxyResponse proxyResponse = new ProxyResponse();
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proxyResponse.setCode(HttpStatus.SC_UNAUTHORIZED);
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proxyResponse.setExecutorResponse(
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HandlerConstants.EXECUTOR_EXCEPTION_PREFIX + HandlerUtil.getStatusKey(HttpStatus.SC_UNAUTHORIZED));
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HandlerUtil.handleError(req, resp, serverUrl, platform, proxyResponse);
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return false;
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}
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authData = (AuthData) session.getAttribute(HandlerConstants.SESSION_AUTH_DATA_KEY);
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platform = (String) session.getAttribute(HandlerConstants.PLATFORM);
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if (authData == null) {
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log.error("Unauthorized, Access token couldn't found in the current session");
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ProxyResponse proxyResponse = new ProxyResponse();
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proxyResponse.setCode(HttpStatus.SC_UNAUTHORIZED);
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proxyResponse.setExecutorResponse(
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HandlerConstants.EXECUTOR_EXCEPTION_PREFIX + HandlerUtil.getStatusKey(HttpStatus.SC_UNAUTHORIZED));
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HandlerUtil.handleError(req, resp, serverUrl, platform, proxyResponse);
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return false;
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}
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if (apiEndpoint == null || method == null) {
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log.error("Bad Request, Either api-endpoint or method is empty");
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ProxyResponse proxyResponse = new ProxyResponse();
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proxyResponse.setCode(HttpStatus.SC_BAD_REQUEST);
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proxyResponse.setExecutorResponse(
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HandlerConstants.EXECUTOR_EXCEPTION_PREFIX + HandlerUtil.getStatusKey(HttpStatus.SC_BAD_REQUEST));
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HandlerUtil.handleError(req, resp, serverUrl, platform, proxyResponse);
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return false;
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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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* @param req {@link HttpServletRequest}
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* @param resp {@link HttpServletResponse}
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* @return If successfully renew tokens, returns TRUE otherwise return FALSE
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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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*/
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private static boolean refreshToken(HttpServletRequest req, HttpServletResponse resp) throws IOException {
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log.debug("refreshing the token");
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HttpPost tokenEndpoint = new HttpPost(
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serverUrl + HandlerConstants.API_COMMON_CONTEXT + HandlerConstants.TOKEN_ENDPOINT);
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HttpSession session = req.getSession(false);
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if (session == null) {
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log.error("Couldn't find a session, hence it is required to login and proceed.");
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ProxyResponse proxyResponse = new ProxyResponse();
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proxyResponse.setCode(HttpStatus.SC_UNAUTHORIZED);
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proxyResponse.setExecutorResponse(
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HandlerConstants.EXECUTOR_EXCEPTION_PREFIX + HandlerUtil.getStatusKey(HttpStatus.SC_UNAUTHORIZED));
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HandlerUtil.handleError(req, resp, serverUrl, platform, proxyResponse);
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return false;
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}
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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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ContentType.APPLICATION_FORM_URLENCODED);
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tokenEndpoint.setEntity(tokenEndpointPayload);
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String encodedClientApp = authData.getEncodedClientApp();
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tokenEndpoint.setHeader("Authorization", "Basic " + encodedClientApp);
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tokenEndpoint.setHeader("Content-Type", ContentType.APPLICATION_FORM_URLENCODED.toString());
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ProxyResponse tokenResultResponse = execute(tokenEndpoint);
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if (tokenResultResponse.getExecutorResponse().contains(HandlerConstants.EXECUTOR_EXCEPTION_PREFIX)) {
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log.error("Error occurred while refreshing access token.");
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HandlerUtil.handleError(req, resp, serverUrl, platform, tokenResultResponse);
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return false;
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}
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JsonParser jsonParser = new JsonParser();
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JsonElement jTokenResult = jsonParser.parse(tokenResultResponse.getData());
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if (jTokenResult.isJsonObject()) {
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JsonObject jTokenResultAsJsonObject = jTokenResult.getAsJsonObject();
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AuthData newAuthData = new AuthData();
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newAuthData.setAccessToken(jTokenResultAsJsonObject.get("access_token").getAsString());
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newAuthData.setRefreshToken(jTokenResultAsJsonObject.get("refresh_token").getAsString());
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newAuthData.setScope(jTokenResultAsJsonObject.get("scope").getAsString());
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newAuthData.setClientId(authData.getClientId());
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newAuthData.setClientSecret(authData.getClientSecret());
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newAuthData.setEncodedClientApp(authData.getEncodedClientApp());
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newAuthData.setUsername(authData.getUsername());
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authData = newAuthData;
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session.setAttribute(HandlerConstants.SESSION_AUTH_DATA_KEY, newAuthData);
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return true;
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}
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log.error("Error Occurred in token renewal process.");
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ProxyResponse proxyResponse = new ProxyResponse();
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proxyResponse.setCode(HttpStatus.SC_INTERNAL_SERVER_ERROR);
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proxyResponse.setExecutorResponse(
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HandlerConstants.EXECUTOR_EXCEPTION_PREFIX + HandlerUtil.getStatusKey(HttpStatus.SC_INTERNAL_SERVER_ERROR));
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HandlerUtil.handleError(req, resp, serverUrl, platform, proxyResponse);
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return false;
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}
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}
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@ -0,0 +1,362 @@
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/*
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* Copyright (c) 2019, Entgra (Pvt) Ltd. (http://www.entgra.io) All Rights Reserved.
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*
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* Entgra (Pvt) Ltd. licenses this file to you under the Apache License,
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* Version 2.0 (the "License"); you may not use this file except
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* in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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package io.entgra.ui.request.interceptor;
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import com.google.gson.JsonElement;
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import com.google.gson.JsonObject;
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import com.google.gson.JsonParser;
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import io.entgra.ui.request.interceptor.beans.AuthData;
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import io.entgra.ui.request.interceptor.util.HandlerConstants;
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import io.entgra.ui.request.interceptor.util.HandlerUtil;
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import org.apache.commons.lang.StringUtils;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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import org.apache.http.HttpHeaders;
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import org.apache.http.HttpStatus;
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import org.apache.http.client.methods.HttpDelete;
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import org.apache.http.client.methods.HttpGet;
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import org.apache.http.client.methods.HttpPost;
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import org.apache.http.client.methods.HttpPut;
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import org.apache.http.client.methods.HttpRequestBase;
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import org.apache.http.cookie.SM;
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import org.apache.http.entity.ContentType;
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import org.apache.http.entity.InputStreamEntity;
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import org.apache.http.entity.StringEntity;
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import org.wso2.carbon.device.application.mgt.common.ProxyResponse;
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import javax.servlet.annotation.MultipartConfig;
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import javax.servlet.annotation.WebServlet;
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import javax.servlet.http.HttpServlet;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import javax.servlet.http.HttpSession;
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import java.io.IOException;
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import java.util.Enumeration;
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import static io.entgra.ui.request.interceptor.util.HandlerUtil.execute;
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@MultipartConfig
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@WebServlet(
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name = "RequestHandlerServlet",
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description = "This servlet intercepts the api requests initiated from the user interface and validate before" +
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" forwarding to the backend",
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urlPatterns = {
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"/invoke/*"
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}
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)
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public class InvokerHandler extends HttpServlet {
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private static final Log log = LogFactory.getLog(LoginHandler.class);
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private static final long serialVersionUID = -6508020875358160165L;
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// private static final HeaderGroup nonForwardingHeaders = new HeaderGroup();
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private static AuthData authData;
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private static String apiEndpoint;
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private static String serverUrl;
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private static String platform;
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// static {
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// // Initializing hop-by-hop headers to omit them from forwarding to the backend
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// String[] headers = {HttpHeaders.CONNECTION, HttpHeaders.TRANSFER_ENCODING, HttpHeaders.PROXY_AUTHENTICATE,
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// HttpHeaders.PROXY_AUTHORIZATION, HttpHeaders.UPGRADE, HttpHeaders.TE, HttpHeaders.TRAILER,
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// HandlerConstants.KEEP_ALIVE, HandlerConstants.PUBLIC};
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// for (String header : headers) {
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// nonForwardingHeaders.addHeader(new BasicHeader(header, null));
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// }
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// }
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@Override
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protected void doPost(HttpServletRequest req, HttpServletResponse resp) {
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try {
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if (validateRequest(req, resp)) {
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HttpPost postRequest = new HttpPost(generateBackendRequestURL(req));
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if (StringUtils.isNotEmpty(req.getHeader(HttpHeaders.CONTENT_LENGTH)) ||
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StringUtils.isNotEmpty(req.getHeader(HttpHeaders.TRANSFER_ENCODING))) {
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InputStreamEntity entity = new InputStreamEntity(req.getInputStream(),
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Long.parseLong(req.getHeader(HttpHeaders.CONTENT_LENGTH)));
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postRequest.setEntity(entity);
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}
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copyRequestHeaders(req, postRequest);
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postRequest.setHeader(HttpHeaders.AUTHORIZATION, HandlerConstants.BEARER + authData.getAccessToken());
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ProxyResponse proxyResponse = execute(postRequest);
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if (HandlerConstants.TOKEN_IS_EXPIRED.equals(proxyResponse.getExecutorResponse())) {
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proxyResponse = retryRequestWithRefreshedToken(req, resp, postRequest);
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if (proxyResponse == null) {
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return;
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}
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}
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if (proxyResponse.getExecutorResponse().contains(HandlerConstants.EXECUTOR_EXCEPTION_PREFIX)) {
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log.error("Error occurred while invoking the API endpoint.");
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HandlerUtil.handleError(req, resp, serverUrl, platform, proxyResponse);
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return;
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}
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HandlerUtil.handleSuccess(req, resp, serverUrl, platform, proxyResponse);
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}
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} catch (IOException e) {
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log.error("Error occurred when processing POST request.", e);
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}
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}
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@Override
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protected void doGet(HttpServletRequest req, HttpServletResponse resp) {
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try {
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if (validateRequest(req, resp)) {
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HttpGet getRequest = new HttpGet(generateBackendRequestURL(req));
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copyRequestHeaders(req, getRequest);
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getRequest.setHeader(HttpHeaders.AUTHORIZATION, HandlerConstants.BEARER + authData.getAccessToken());
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ProxyResponse proxyResponse = execute(getRequest);
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if (HandlerConstants.TOKEN_IS_EXPIRED.equals(proxyResponse.getExecutorResponse())) {
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proxyResponse = retryRequestWithRefreshedToken(req, resp, getRequest);
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if (proxyResponse == null) {
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return;
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}
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}
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if (proxyResponse.getExecutorResponse().contains(HandlerConstants.EXECUTOR_EXCEPTION_PREFIX)) {
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log.error("Error occurred while invoking the API endpoint.");
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HandlerUtil.handleError(req, resp, serverUrl, platform, proxyResponse);
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return;
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}
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HandlerUtil.handleSuccess(req, resp, serverUrl, platform, proxyResponse);
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}
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} catch (IOException e) {
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log.error("Error occurred when processing GET request.", e);
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}
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}
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@Override
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protected void doPut(HttpServletRequest req, HttpServletResponse resp) {
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try {
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if (validateRequest(req, resp)) {
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HttpPut putRequest = new HttpPut(generateBackendRequestURL(req));
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if ((StringUtils.isNotEmpty(req.getHeader(HttpHeaders.CONTENT_LENGTH)) &&
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Double.parseDouble(req.getHeader(HttpHeaders.CONTENT_LENGTH)) > 0) ||
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StringUtils.isNotEmpty(req.getHeader(HttpHeaders.TRANSFER_ENCODING))) {
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InputStreamEntity entity = new InputStreamEntity(req.getInputStream(),
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Long.parseLong(req.getHeader(HttpHeaders.CONTENT_LENGTH)));
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putRequest.setEntity(entity);
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}
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copyRequestHeaders(req, putRequest);
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putRequest.setHeader(HttpHeaders.AUTHORIZATION, HandlerConstants.BEARER + authData.getAccessToken());
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ProxyResponse proxyResponse = execute(putRequest);
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if (HandlerConstants.TOKEN_IS_EXPIRED.equals(proxyResponse.getExecutorResponse())) {
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proxyResponse = retryRequestWithRefreshedToken(req, resp, putRequest);
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if (proxyResponse == null) {
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return;
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}
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}
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if (proxyResponse.getExecutorResponse().contains(HandlerConstants.EXECUTOR_EXCEPTION_PREFIX)) {
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log.error("Error occurred while invoking the API endpoint.");
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HandlerUtil.handleError(req, resp, serverUrl, platform, proxyResponse);
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return;
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}
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HandlerUtil.handleSuccess(req, resp, serverUrl, platform, proxyResponse);
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}
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} catch (IOException e) {
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log.error("Error occurred when processing PUT request.", e);
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}
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}
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@Override
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protected void doDelete(HttpServletRequest req, HttpServletResponse resp) {
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try {
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if (validateRequest(req, resp)) {
|
||||
HttpDelete deleteRequest = new HttpDelete(generateBackendRequestURL(req));
|
||||
copyRequestHeaders(req, deleteRequest);
|
||||
deleteRequest.setHeader(HttpHeaders.AUTHORIZATION, HandlerConstants.BEARER + authData.getAccessToken());
|
||||
ProxyResponse proxyResponse = execute(deleteRequest);
|
||||
if (HandlerConstants.TOKEN_IS_EXPIRED.equals(proxyResponse.getExecutorResponse())) {
|
||||
proxyResponse = retryRequestWithRefreshedToken(req, resp, deleteRequest);
|
||||
if (proxyResponse == null) {
|
||||
return;
|
||||
}
|
||||
}
|
||||
if (proxyResponse.getExecutorResponse().contains(HandlerConstants.EXECUTOR_EXCEPTION_PREFIX)) {
|
||||
log.error("Error occurred while invoking the API endpoint.");
|
||||
HandlerUtil.handleError(req, resp, serverUrl, platform, proxyResponse);
|
||||
return;
|
||||
}
|
||||
HandlerUtil.handleSuccess(req, resp, serverUrl, platform, proxyResponse);
|
||||
}
|
||||
} catch (IOException e) {
|
||||
log.error("Error occurred when processing DELETE request.", e);
|
||||
}
|
||||
}
|
||||
|
||||
private String generateBackendRequestURL(HttpServletRequest req) {
|
||||
StringBuilder urlBuilder = new StringBuilder();
|
||||
urlBuilder.append(serverUrl).append(HandlerConstants.API_COMMON_CONTEXT).append(apiEndpoint);
|
||||
if (StringUtils.isNotEmpty(req.getQueryString())) {
|
||||
urlBuilder.append("?").append(req.getQueryString());
|
||||
}
|
||||
return urlBuilder.toString();
|
||||
}
|
||||
|
||||
private void copyRequestHeaders(HttpServletRequest req, HttpRequestBase httpRequest) {
|
||||
Enumeration<String> headerNames = req.getHeaderNames();
|
||||
while (headerNames.hasMoreElements()) {
|
||||
String headerName = headerNames.nextElement();
|
||||
if (headerName.equalsIgnoreCase(HttpHeaders.CONTENT_LENGTH) ||
|
||||
headerName.equalsIgnoreCase(SM.COOKIE)) {
|
||||
continue;
|
||||
}
|
||||
Enumeration<String> headerValues = req.getHeaders(headerName);
|
||||
while (headerValues.hasMoreElements()) {
|
||||
httpRequest.setHeader(headerName, headerValues.nextElement());
|
||||
}
|
||||
}
|
||||
}
|
||||
/***
|
||||
*
|
||||
* @param req {@link HttpServletRequest}
|
||||
* @param resp {@link HttpServletResponse}
|
||||
* @return If request is a valid one, returns TRUE, otherwise return FALSE
|
||||
* @throws IOException If and error occurs while witting error response to client side
|
||||
*/
|
||||
private static boolean validateRequest(HttpServletRequest req, HttpServletResponse resp)
|
||||
throws IOException {
|
||||
serverUrl = req.getScheme() + "://" + req.getServerName() + ":" + req.getServerPort();
|
||||
apiEndpoint = req.getPathInfo();
|
||||
HttpSession session = req.getSession(false);
|
||||
if (session == null) {
|
||||
log.error("Unauthorized, You are not logged in. Please log in to the portal");
|
||||
ProxyResponse proxyResponse = new ProxyResponse();
|
||||
proxyResponse.setCode(HttpStatus.SC_UNAUTHORIZED);
|
||||
proxyResponse.setExecutorResponse(
|
||||
HandlerConstants.EXECUTOR_EXCEPTION_PREFIX + HandlerUtil.getStatusKey(HttpStatus.SC_UNAUTHORIZED));
|
||||
HandlerUtil.handleError(req, resp, serverUrl, platform, proxyResponse);
|
||||
return false;
|
||||
}
|
||||
authData = (AuthData) session.getAttribute(HandlerConstants.SESSION_AUTH_DATA_KEY);
|
||||
platform = (String) session.getAttribute(HandlerConstants.PLATFORM);
|
||||
if (authData == null) {
|
||||
log.error("Unauthorized, Access token not found in the current session");
|
||||
ProxyResponse proxyResponse = new ProxyResponse();
|
||||
proxyResponse.setCode(HttpStatus.SC_UNAUTHORIZED);
|
||||
proxyResponse.setExecutorResponse(
|
||||
HandlerConstants.EXECUTOR_EXCEPTION_PREFIX + HandlerUtil.getStatusKey(HttpStatus.SC_UNAUTHORIZED));
|
||||
HandlerUtil.handleError(req, resp, serverUrl, platform, proxyResponse);
|
||||
return false;
|
||||
}
|
||||
|
||||
if (apiEndpoint == null || req.getMethod() == null) {
|
||||
log.error("Bad Request, Either destination api-endpoint or method is empty");
|
||||
ProxyResponse proxyResponse = new ProxyResponse();
|
||||
proxyResponse.setCode(HttpStatus.SC_BAD_REQUEST);
|
||||
proxyResponse.setExecutorResponse(
|
||||
HandlerConstants.EXECUTOR_EXCEPTION_PREFIX + HandlerUtil.getStatusKey(HttpStatus.SC_BAD_REQUEST));
|
||||
HandlerUtil.handleError(req, resp, serverUrl, platform, proxyResponse);
|
||||
return false;
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
/**
|
||||
* Retry request again after refreshing the access token
|
||||
*
|
||||
* @param req incoming {@link HttpServletRequest}
|
||||
* @param resp resp {@link HttpServletResponse}
|
||||
* @param httpRequest subclass of {@link HttpRequestBase} related to the current request.
|
||||
* @return {@link ProxyResponse} if successful and <code>null</code> if failed.
|
||||
* @throws IOException If an error occurs when try to retry the request.
|
||||
*/
|
||||
private static ProxyResponse retryRequestWithRefreshedToken(HttpServletRequest req, HttpServletResponse resp,
|
||||
HttpRequestBase httpRequest) throws IOException {
|
||||
if (refreshToken(req, resp)) {
|
||||
httpRequest.setHeader(HttpHeaders.AUTHORIZATION, HandlerConstants.BEARER + authData.getAccessToken());
|
||||
ProxyResponse proxyResponse = execute(httpRequest);
|
||||
if (proxyResponse.getExecutorResponse().contains(HandlerConstants.EXECUTOR_EXCEPTION_PREFIX)) {
|
||||
log.error("Error occurred while invoking the API after refreshing the token.");
|
||||
HandlerUtil.handleError(req, resp, serverUrl, platform, proxyResponse);
|
||||
return null;
|
||||
}
|
||||
return proxyResponse;
|
||||
}
|
||||
return null;
|
||||
}
|
||||
|
||||
/***
|
||||
*
|
||||
* @param req {@link HttpServletRequest}
|
||||
* @param resp {@link HttpServletResponse}
|
||||
* @return If successfully renew tokens, returns TRUE otherwise return FALSE
|
||||
* @throws IOException If an error occurs while witting error response to client side or invoke token renewal API
|
||||
*/
|
||||
private static boolean refreshToken(HttpServletRequest req, HttpServletResponse resp)
|
||||
throws IOException {
|
||||
if (log.isDebugEnabled()) {
|
||||
log.debug("refreshing the token");
|
||||
}
|
||||
HttpPost tokenEndpoint = new HttpPost(
|
||||
serverUrl + HandlerConstants.API_COMMON_CONTEXT + HandlerConstants.TOKEN_ENDPOINT);
|
||||
HttpSession session = req.getSession(false);
|
||||
if (session == null) {
|
||||
log.error("Couldn't find a session, hence it is required to login and proceed.");
|
||||
ProxyResponse proxyResponse = new ProxyResponse();
|
||||
proxyResponse.setCode(HttpStatus.SC_UNAUTHORIZED);
|
||||
proxyResponse.setExecutorResponse(
|
||||
HandlerConstants.EXECUTOR_EXCEPTION_PREFIX + HandlerUtil.getStatusKey(HttpStatus.SC_UNAUTHORIZED));
|
||||
HandlerUtil.handleError(req, resp, serverUrl, platform, proxyResponse);
|
||||
return false;
|
||||
}
|
||||
|
||||
StringEntity tokenEndpointPayload = new StringEntity(
|
||||
"grant_type=refresh_token&refresh_token=" + authData.getRefreshToken() + "&scope=PRODUCTION",
|
||||
ContentType.APPLICATION_FORM_URLENCODED);
|
||||
|
||||
tokenEndpoint.setEntity(tokenEndpointPayload);
|
||||
String encodedClientApp = authData.getEncodedClientApp();
|
||||
tokenEndpoint.setHeader(HttpHeaders.AUTHORIZATION, HandlerConstants.BASIC +
|
||||
encodedClientApp);
|
||||
tokenEndpoint.setHeader(HttpHeaders.CONTENT_TYPE, ContentType.APPLICATION_FORM_URLENCODED.toString());
|
||||
|
||||
ProxyResponse tokenResultResponse = execute(tokenEndpoint);
|
||||
if (tokenResultResponse.getExecutorResponse().contains(HandlerConstants.EXECUTOR_EXCEPTION_PREFIX)) {
|
||||
log.error("Error occurred while refreshing access token.");
|
||||
HandlerUtil.handleError(req, resp, serverUrl, platform, tokenResultResponse);
|
||||
return false;
|
||||
}
|
||||
|
||||
JsonParser jsonParser = new JsonParser();
|
||||
JsonElement jTokenResult = jsonParser.parse(tokenResultResponse.getData());
|
||||
|
||||
if (jTokenResult.isJsonObject()) {
|
||||
JsonObject jTokenResultAsJsonObject = jTokenResult.getAsJsonObject();
|
||||
AuthData newAuthData = new AuthData();
|
||||
|
||||
newAuthData.setAccessToken(jTokenResultAsJsonObject.get("access_token").getAsString());
|
||||
newAuthData.setRefreshToken(jTokenResultAsJsonObject.get("refresh_token").getAsString());
|
||||
newAuthData.setScope(jTokenResultAsJsonObject.get("scope").getAsString());
|
||||
newAuthData.setClientId(authData.getClientId());
|
||||
newAuthData.setClientSecret(authData.getClientSecret());
|
||||
newAuthData.setEncodedClientApp(authData.getEncodedClientApp());
|
||||
newAuthData.setUsername(authData.getUsername());
|
||||
authData = newAuthData;
|
||||
session.setAttribute(HandlerConstants.SESSION_AUTH_DATA_KEY, newAuthData);
|
||||
return true;
|
||||
}
|
||||
|
||||
log.error("Error Occurred in token renewal process.");
|
||||
ProxyResponse proxyResponse = new ProxyResponse();
|
||||
proxyResponse.setCode(HttpStatus.SC_INTERNAL_SERVER_ERROR);
|
||||
proxyResponse.setExecutorResponse(
|
||||
HandlerConstants.EXECUTOR_EXCEPTION_PREFIX + HandlerUtil.getStatusKey(HttpStatus.SC_INTERNAL_SERVER_ERROR));
|
||||
HandlerUtil.handleError(req, resp, serverUrl, platform, proxyResponse);
|
||||
return false;
|
||||
}
|
||||
}
|
||||
@ -1 +0,0 @@
|
||||
custom = true
|
||||
@ -1,3 +0,0 @@
|
||||
instructions.configure = \
|
||||
org.eclipse.equinox.p2.touchpoint.natives.mkdir(path:${installFolder}/../../deployment/server/webapps/);\
|
||||
org.eclipse.equinox.p2.touchpoint.natives.copy(source:${installFolder}/../features/io.entgra.request.handler_${feature.version}/webapps/api#application-mgt-handler#v1.0.war,target:${installFolder}/../../deployment/server/webapps/api#application-mgt-handler#v1.0.war,overwrite:true);\
|
||||
@ -0,0 +1,3 @@
|
||||
instructions.configure = \
|
||||
org.eclipse.equinox.p2.touchpoint.natives.mkdir(path:${installFolder}/../../deployment/server/webapps/);\
|
||||
org.eclipse.equinox.p2.touchpoint.natives.copy(source:${installFolder}/../features/io.entgra.ui.request.interceptor_${feature.version}/webapps/ui=request-handler.war,target:${installFolder}/../../deployment/server/webapps/ui=request-handler.war,overwrite:true);\
|
||||
@ -0,0 +1,3 @@
|
||||
instructions.configure = \
|
||||
org.eclipse.equinox.p2.touchpoint.natives.mkdir(path:${installFolder}/../../deployment/server/webapps/);\
|
||||
org.eclipse.equinox.p2.touchpoint.natives.copy(source:${installFolder}/../features/io.entgra.ui.request.interceptor_${feature.version}/webapps/ui-request-handler.war,target:${installFolder}/../../deployment/server/webapps/ui-request-handler.war,overwrite:true);\
|
||||
Loading…
Reference in new issue