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@ -36,6 +36,7 @@ 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.HttpEntityEnclosingRequestBase;
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import org.apache.http.client.methods.HttpGet;
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import org.apache.http.client.methods.HttpHead;
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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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@ -55,7 +56,6 @@ 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.Arrays;
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import java.util.Enumeration;
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import java.util.List;
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@ -72,8 +72,7 @@ public class InvokerHandler extends HttpServlet {
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private static final Log log = LogFactory.getLog(InvokerHandler.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 serverUrl;
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private static String platform;
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private static String apiEndpoint;
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@Override
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protected void doPost(HttpServletRequest req, HttpServletResponse resp) {
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@ -91,7 +90,7 @@ public class InvokerHandler extends HttpServlet {
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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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log.error("Error occurred while invoking the POST API endpoint.");
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HandlerUtil.handleError(resp, proxyResponse);
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return;
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}
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@ -119,7 +118,7 @@ public class InvokerHandler extends HttpServlet {
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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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log.error("Error occurred while invoking the GET API endpoint.");
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HandlerUtil.handleError(resp, proxyResponse);
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return;
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}
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@ -130,6 +129,32 @@ public class InvokerHandler extends HttpServlet {
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}
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}
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@Override
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protected void doHead(HttpServletRequest req, HttpServletResponse resp) {
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try {
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if (validateRequest(req, resp)) {
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HttpHead headRequest = new HttpHead(generateBackendRequestURL(req));
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copyRequestHeaders(req, headRequest, false);
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headRequest.setHeader(HttpHeaders.AUTHORIZATION, HandlerConstants.BEARER + authData.getAccessToken());
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ProxyResponse proxyResponse = HandlerUtil.execute(headRequest);
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if (HandlerConstants.TOKEN_IS_EXPIRED.equals(proxyResponse.getExecutorResponse())) {
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proxyResponse = retryRequestWithRefreshedToken(req, resp, headRequest);
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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 HEAD API endpoint.");
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HandlerUtil.handleError(resp, proxyResponse);
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return;
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}
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HandlerUtil.handleSuccess(resp, proxyResponse);
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}
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} catch (IOException e) {
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log.error("Error occurred when processing HEAD 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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@ -146,7 +171,7 @@ public class InvokerHandler extends HttpServlet {
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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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log.error("Error occurred while invoking the PUT API endpoint.");
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HandlerUtil.handleError(resp, proxyResponse);
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return;
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}
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@ -174,7 +199,7 @@ public class InvokerHandler extends HttpServlet {
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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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log.error("Error occurred while invoking the DELETE API endpoint.");
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HandlerUtil.handleError(resp, proxyResponse);
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return;
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}
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@ -229,13 +254,7 @@ public class InvokerHandler extends HttpServlet {
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*/
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private String generateBackendRequestURL(HttpServletRequest req) {
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StringBuilder urlBuilder = new StringBuilder();
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String endpointUrl = Arrays.stream(HandlerConstants.SKIPPING_API_CONTEXT)
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.anyMatch(contextPath -> contextPath.contains(req.getPathInfo())) ?
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serverUrl :
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req.getScheme() + HandlerConstants.SCHEME_SEPARATOR + System.getProperty("iot.gateway.host")
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+ HandlerConstants.COLON + HandlerUtil.getGatewayPort(req.getScheme());
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urlBuilder.append(endpointUrl).append(HandlerConstants.API_COMMON_CONTEXT).append(req.getPathInfo());
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urlBuilder.append(apiEndpoint).append(HandlerConstants.API_COMMON_CONTEXT).append(req.getPathInfo());
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if (StringUtils.isNotEmpty(req.getQueryString())) {
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urlBuilder.append("?").append(req.getQueryString());
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}
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@ -277,9 +296,19 @@ public class InvokerHandler extends HttpServlet {
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*/
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private static boolean validateRequest(HttpServletRequest req, HttpServletResponse resp)
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throws IOException {
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serverUrl = req.getScheme() + "://" + req.getServerName() + ":" + System.getProperty("iot.gateway.https.port");
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HttpSession session = req.getSession(false);
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apiEndpoint = req.getScheme() + HandlerConstants.SCHEME_SEPARATOR + System.getProperty("iot.gateway.host")
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+ HandlerConstants.COLON + HandlerUtil.getGatewayPort(req.getScheme());
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if ("reports".equalsIgnoreCase(req.getHeader("appName"))){
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apiEndpoint = System.getProperty("iot.reporting.event.host");
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if (StringUtils.isBlank(apiEndpoint)){
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log.error("Reporting Endpoint is not defined in the iot-server.sh properly.");
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handleError(resp, HttpStatus.SC_INTERNAL_SERVER_ERROR);
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return false;
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}
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}
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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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handleError(resp, HttpStatus.SC_UNAUTHORIZED);
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@ -287,7 +316,6 @@ public class InvokerHandler extends HttpServlet {
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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 not found in the current session");
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handleError(resp, HttpStatus.SC_UNAUTHORIZED);
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@ -340,7 +368,7 @@ public class InvokerHandler extends HttpServlet {
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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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serverUrl + HandlerConstants.API_COMMON_CONTEXT + HandlerConstants.TOKEN_ENDPOINT);
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apiEndpoint + 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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Dharmakeerthi Lasantha
5 years ago