Synch up paths front-end vs back-end for A1/AC

[portal/ric-dashboard.git] / webapp-backend / src / main / java / org / oransc / ric / portal / dashboard / controller / SimpleErrorController.java

diff --git a/webapp-backend/src/main/java/org/oransc/ric/portal/dashboard/controller/SimpleErrorController.java b/webapp-backend/src/main/java/org/oransc/ric/portal/dashboard/controller/SimpleErrorController.java
index a1678be..ca3df22 100644 (file)
--- a/webapp-backend/src/main/java/org/oransc/ric/portal/dashboard/controller/SimpleErrorController.java
+++ b/webapp-backend/src/main/java/org/oransc/ric/portal/dashboard/controller/SimpleErrorController.java
@@ -17,84 +17,77 @@
  * limitations under the License.
  * ========================LICENSE_END===================================
  */
+
 package org.oransc.ric.portal.dashboard.controller;
 
+import java.lang.invoke.MethodHandles;
 import java.util.Map;
 
 import javax.servlet.http.HttpServletRequest;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.web.servlet.error.ErrorAttributes;
 import org.springframework.boot.web.servlet.error.ErrorController;
-import org.springframework.util.Assert;
+import org.springframework.http.MediaType;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RestController;
 import org.springframework.web.context.request.ServletWebRequest;
-import org.springframework.web.context.request.WebRequest;
 
 import springfox.documentation.annotations.ApiIgnore;
 
 /**
- * Returns JSON on error within the Spring-managed context. Does not fire for
- * anything else; e.g., resource not found outside the context. If trace is
- * requested via request parameter ("?trace=true") and available, adds stack
- * trace information to the standard JSON error response.
+ * Provides a controller which is invoked on any error within the Spring-managed
+ * context, including page not found, and redirects the caller to a custom error
+ * page. The caller is also redirected to this page if a REST controller takes
+ * an uncaught exception.
+ * 
+ * If trace is requested via request parameter ("?trace=true") and available,
+ * adds stack trace information to the standard JSON error response.
  * 
  * Excluded from Swagger API documentation.
  * 
  * https://stackoverflow.com/questions/25356781/spring-boot-remove-whitelabel-error-page
  * https://www.baeldung.com/spring-boot-custom-error-page
  */
+
 @ApiIgnore
-@RestController
+@Controller
+@RequestMapping(value = SimpleErrorController.ERROR_PATH, produces = MediaType.APPLICATION_JSON_VALUE)
 public class SimpleErrorController implements ErrorController {
 
-       private static final String ERROR_PATH = "/error";
-       private static final String TRACE = "trace";
+       private static final Logger logger = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
+
+       public static final String ERROR_PATH = "/error";
+
        private final ErrorAttributes errorAttributes;
 
-       /**
-        * Constructor
-        * 
-        * @param errorAttributes
-        *                            error attributes must not be null
-        */
        @Autowired
        public SimpleErrorController(ErrorAttributes errorAttributes) {
-               Assert.notNull(errorAttributes, "ErrorAttributes must not be null");
                this.errorAttributes = errorAttributes;
        }
 
        @Override
        public String getErrorPath() {
+               logger.warn("getErrorPath");
                return ERROR_PATH;
        }
 
-       /**
-        * Builds a map with error details
-        * 
-        * @param aRequest
-        *                     HttpServletRequest
-        * @return Map of String to Object
-        */
-       @RequestMapping(ERROR_PATH)
-       public Map<String, Object> error(HttpServletRequest aRequest) {
-               Map<String, Object> body = getErrorAttributes(aRequest, getTraceParameter(aRequest));
-               body.put("decorated-by", SimpleErrorController.class.getName());
-               body.computeIfPresent(TRACE, (key, value) -> body.put(TRACE, ((String) value).split("\n\t")));
-               return body;
-       }
-
-       private boolean getTraceParameter(HttpServletRequest request) {
-               String parameter = request.getParameter(TRACE);
-               if (parameter == null)
-                       return false;
-               return !"false".equalsIgnoreCase(parameter);
-       }
-
-       private Map<String, Object> getErrorAttributes(HttpServletRequest aRequest, boolean includeStackTrace) {
-               WebRequest webRequest = new ServletWebRequest(aRequest);
-               return errorAttributes.getErrorAttributes(webRequest, includeStackTrace);
+       @GetMapping
+       public String handleError(HttpServletRequest request) {
+               ServletWebRequest servletWebRequest = new ServletWebRequest(request);
+               Throwable t = errorAttributes.getError(servletWebRequest);
+               if (t != null)
+                       logger.warn("handleError", t);
+               Map<String, Object> attributes = errorAttributes.getErrorAttributes(servletWebRequest, true);
+               attributes.forEach((attribute, value) -> {
+                       logger.warn("handleError: {} -> {}", attribute, value);
+               });
+               // Return the name of the page INCLUDING suffix, which I guess is a "view" name.
+               // Just "error" is not enough, but don't seem to need a ModelAndView object.
+               return "error.html";
        }
 
-}
+}
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