SUPPORT-8897: Fix

backend/src/main/java/ru/micord/ervu/error_handling/ErvuUnknownExceptionHandler.java

@@ -0,0 +1,61 @@
+package ru.micord.ervu.error_handling;
+
+import java.util.Arrays;
+
+import org.springframework.context.annotation.Primary;
+import org.springframework.context.support.MessageSourceAccessor;
+import org.springframework.stereotype.Component;
+import org.springframework.util.StringUtils;
+
+import ru.cg.webbpm.modules.core.app_info.api.mode.AppMode;
+import ru.cg.webbpm.modules.core.error_handling.api.ProcessedWebException;
+import ru.cg.webbpm.modules.core.error_handling.api.impl.UnknownExceptionHandler;
+import ru.cg.webbpm.modules.core.runtime.api.MessageBundleUtils;
+
+@Component
+@Primary
+public class ErvuUnknownExceptionHandler extends UnknownExceptionHandler {
+  protected static final MessageSourceAccessor ERVU_MESSAGE_SOURCE = MessageBundleUtils.createAccessor("exception_handler_messages");
+
+  @Override
+  public ProcessedWebException process(Throwable throwable) {
+    if (AppMode.mode() == AppMode.Mode.PROD) {
+      return new ProcessedWebException()
+          .addMessage(unknownErrorMessage());
+    }
+    else {
+      Throwable lastThrowable = findLastCause(throwable);
+      String lastThrowableStackTrace = Arrays.toString(lastThrowable.getStackTrace());
+      String limitLastThrowableStackTrace = lastThrowableStackTrace.length() > MAX_STACK_TRACE_LENGTH
+                                            ? lastThrowableStackTrace.substring(0, MAX_STACK_TRACE_LENGTH) + " ..."
+                                            : lastThrowableStackTrace;
+      return new ProcessedWebException()
+          .addMessage(findLastNotEmptyMessage(throwable))
+          .setCauseStackTrace(limitLastThrowableStackTrace);
+    }
+  }
+
+  private String unknownErrorMessage() {
+    return ERVU_MESSAGE_SOURCE.getMessage("ervu.error.unknown", new Object[] {});
+  }
+
+  private Throwable findLastCause(Throwable throwable) {
+    if (throwable.getCause() != null) {
+      return findLastCause(throwable.getCause());
+    }
+    return throwable;
+  }
+
+  private String findLastNotEmptyMessage(Throwable throwable) {
+    String message = throwable.getMessage();
+    if(throwable.getCause() != null) {
+      String nextMessage = findLastNotEmptyMessage(throwable.getCause());
+      if(!StringUtils.isEmpty(nextMessage)) {
+        message = nextMessage;
+      }
+    }
+    return message;
+  }
+
+
+}

backend/src/main/resources/exception_handler_messages.properties

@@ -0,0 +1 @@
+ervu.error.unknown=??????? ???????? ??????????. ??????????, ????????? ??????? ?????.

backend/src/main/resources/exception_handler_messages_en_US.properties

@@ -0,0 +1 @@
+ervu.error.unknown=The system is temporarily unavailable. Please try again later.