avniproject/avni-webapp#1133 | Show user-friendly error message when upload file size is exceeded

(cherry picked from commit 5f2ca33)

Author: himeshr

avni-server-api/src/main/java/org/avni/server/web/ErrorInterceptors.java

@@ -1,14 +1,15 @@
 package org.avni.server.web;
 
 import com.fasterxml.jackson.databind.exc.InvalidFormatException;
-import org.avni.server.domain.ValidationException;
+import org.apache.tomcat.util.http.fileupload.impl.SizeLimitExceededException;
 import org.avni.server.domain.accessControl.AvniAccessException;
 import org.avni.server.domain.accessControl.AvniNoUserSessionException;
 import org.avni.server.framework.rest.RestControllerErrorResponse;
 import org.avni.server.util.BadRequestError;
 import org.avni.server.util.BugsnagReporter;
 import org.avni.server.web.util.ErrorBodyBuilder;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Value;
 import org.springframework.data.rest.webmvc.ResourceNotFoundException;
 import org.springframework.http.HttpHeaders;
 import org.springframework.http.HttpStatus;
@@ -18,6 +19,7 @@
 import org.springframework.web.bind.annotation.ExceptionHandler;
 import org.springframework.web.bind.annotation.RestControllerAdvice;
 import org.springframework.web.context.request.WebRequest;
+import org.springframework.web.multipart.MaxUploadSizeExceededException;
 import org.springframework.web.servlet.mvc.method.annotation.ResponseEntityExceptionHandler;
 
 import java.util.HashMap;
@@ -28,6 +30,8 @@
 
 @RestControllerAdvice
 public class ErrorInterceptors extends ResponseEntityExceptionHandler {
+
+    private final String maxFileSize;
     private final BugsnagReporter bugsnagReporter;
     private final ErrorBodyBuilder errorBodyBuilder;
 
@@ -58,7 +62,8 @@ public void setMessage(String message) {
     }
 
     @Autowired
-    public ErrorInterceptors(BugsnagReporter bugsnagReporter, ErrorBodyBuilder errorBodyBuilder) {
+    public ErrorInterceptors(@Value("${spring.servlet.multipart.max-file-size}") String maxFileSize, BugsnagReporter bugsnagReporter, ErrorBodyBuilder errorBodyBuilder) {
+        this.maxFileSize = maxFileSize;
         this.bugsnagReporter = bugsnagReporter;
         this.errorBodyBuilder = errorBodyBuilder;
     }
@@ -81,6 +86,11 @@ private ResponseEntity <RestControllerErrorResponse> error(final Exception excep
         return new ResponseEntity(new RestControllerErrorResponse(errorBodyBuilder.getErrorBody(message)), httpStatus);
     }
 
+    @ExceptionHandler(value = {MaxUploadSizeExceededException.class, SizeLimitExceededException.class})
+    public ResponseEntity fileUploadSizeLimitExceededError(Exception e) {
+        return ResponseEntity.badRequest().body(String.format("Maximum upload file size exceeded; ensure file size is less than %s.", maxFileSize));
+    }
+
     @ExceptionHandler(value = {Exception.class})
     public ResponseEntity unknownException(Exception e) {
         if (e instanceof BadRequestError) {