sync some chore settings & clean code

.editorconfig

@@ -0,0 +1,31 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+
+[*.{java, xml, py}]
+indent_style = space
+indent_size = 4
+
+[*.{java, xml}]
+# Ignore the IDEA unsupported warning & it works well (indeed)
+continuation_indent_size = 8

hugegraph-hubble/hubble-be/src/main/java/org/apache/hugegraph/HugeGraphHubble.java

@@ -48,8 +48,7 @@ public static void initEnv() {
     }
 
     @Override
-    protected SpringApplicationBuilder configure(
-                                       SpringApplicationBuilder builder) {
+    protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
         return builder.sources(this.getClass());
     }
 }

hugegraph-hubble/hubble-be/src/main/java/org/apache/hugegraph/handler/ExceptionAdvisor.java

@@ -18,20 +18,23 @@
 
 package org.apache.hugegraph.handler;
 
-import org.apache.hugegraph.exception.*;
+import java.net.ConnectException;
+
+import org.apache.hugegraph.common.Constant;
+import org.apache.hugegraph.common.Response;
+import org.apache.hugegraph.exception.ExternalException;
+import org.apache.hugegraph.exception.ExternalGenericException;
+import org.apache.hugegraph.exception.IllegalGremlinException;
+import org.apache.hugegraph.exception.InternalException;
+import org.apache.hugegraph.exception.ParameterizedException;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.http.HttpStatus;
 import org.springframework.web.bind.annotation.ExceptionHandler;
 import org.springframework.web.bind.annotation.ResponseStatus;
 import org.springframework.web.bind.annotation.RestControllerAdvice;
 
-import org.apache.hugegraph.common.Constant;
-import org.apache.hugegraph.common.Response;
-
 import lombok.extern.log4j.Log4j2;
 
-import java.net.ConnectException;
-
 @Log4j2
 @RestControllerAdvice
 public class ExceptionAdvisor {
@@ -68,21 +71,21 @@ public Response exceptionHandler(ExternalException e) {
     public Response exceptionHandler(ExternalGenericException e) {
         log.error("ExternalGenericException:", e);
         return Response.builder()
-                .status(e.status())
-                .message("An error occurred while trying to connect to the server.")
-                .cause(null)
-                .build();
+                       .status(e.status())
+                       .message("An error occurred while trying to connect to the server.")
+                       .cause(null)
+                       .build();
     }
 
     @ExceptionHandler(ConnectException.class)
     @ResponseStatus(HttpStatus.OK)
     public Response exceptionHandler(ConnectException e) {
         log.error("ConnectException:", e);
         return Response.builder()
-                .status(Constant.STATUS_BAD_REQUEST)
-                .message("An error occurred while trying to connect to the server.")
-                .cause(null)
-                .build();
+                       .status(Constant.STATUS_BAD_REQUEST)
+                       .message("An error occurred while trying to connect to the server.")
+                       .cause(null)
+                       .build();
     }
 
     @ExceptionHandler(ParameterizedException.class)
@@ -109,7 +112,6 @@ public Response exceptionHandler(Exception e) {
                        .build();
     }
 
-
     @ExceptionHandler(IllegalGremlinException.class)
     @ResponseStatus(HttpStatus.OK)
     public Response exceptionHandler(IllegalGremlinException e) {

hugegraph-hubble/hubble-be/src/main/java/org/apache/hugegraph/util/HugeClientUtil.java

@@ -31,6 +31,7 @@
 import org.apache.hugegraph.rest.ClientException;
 import org.apache.hugegraph.structure.gremlin.Result;
 import org.apache.hugegraph.structure.gremlin.ResultSet;
+
 import com.google.common.collect.ImmutableSet;
 
 public final class HugeClientUtil {
@@ -49,14 +50,11 @@ public static HugeClient tryConnect(GraphConnection connection) {
         String password = connection.getPassword();
         int timeout = connection.getTimeout();
         String protocol = connection.getProtocol() == null ?
-                          DEFAULT_PROTOCOL :
-                          connection.getProtocol();
+                          DEFAULT_PROTOCOL : connection.getProtocol();
         String trustStoreFile = connection.getTrustStoreFile();
         String trustStorePassword = connection.getTrustStorePassword();
 
-        String url = UriComponentsBuilder.newInstance()
-                                         .scheme(protocol)
-                                         .host(host).port(port)
+        String url = UriComponentsBuilder.newInstance().scheme(protocol).host(host).port(port)
                                          .toUriString();
         if (username == null) {
             username = "";
@@ -75,21 +73,18 @@ public static HugeClient tryConnect(GraphConnection connection) {
                 throw new ExternalException("client-server.version.unmatched", e);
             }
             if (message != null && (message.startsWith("Error loading trust store from") ||
-                message.startsWith("Cannot find trust store file"))) {
+                                    message.startsWith("Cannot find trust store file"))) {
                 throw new ExternalException("https.load.truststore.error", e);
             }
             throw e;
         } catch (ServerException e) {
             String message = e.getMessage();
             if (Constant.STATUS_UNAUTHORIZED == e.status() ||
                 (message != null && message.startsWith("Authentication"))) {
-                throw new ExternalException(
-                          "graph-connection.username-or-password.incorrect", e);
+                throw new ExternalException("graph-connection.username-or-password.incorrect", e);
             }
-            if (message != null && message.contains("Invalid syntax for " +
-                                                    "username and password")) {
-                throw new ExternalException(
-                          "graph-connection.missing-username-password", e);
+            if (message != null && message.contains("Invalid syntax for username and password")) {
+                throw new ExternalException("graph-connection.missing-username-password", e);
             }
             throw new ExternalGenericException(e, host, port);
         } catch (ClientException e) {
@@ -104,8 +99,7 @@ public static HugeClient tryConnect(GraphConnection connection) {
                        message.contains("Host name may not be null")) {
                 throw new ExternalException("service.unknown-host", e, host);
             } else if (message.contains("<!doctype html>")) {
-                throw new ExternalException("service.suspected-web",
-                                            e, host, port);
+                throw new ExternalException("service.suspected-web", e, host, port);
             }
             throw e;
         }
@@ -115,13 +109,11 @@ public static HugeClient tryConnect(GraphConnection connection) {
             rs.iterator().forEachRemaining(Result::getObject);
         } catch (ServerException e) {
             if (Constant.STATUS_UNAUTHORIZED == e.status()) {
-                throw new ExternalException(
-                          "graph-connection.username-or-password.incorrect", e);
+                throw new ExternalException("graph-connection.username-or-password.incorrect", e);
             }
             String message = e.message();
             if (message != null && message.contains("Could not rebind [g]")) {
-                throw new ExternalException("graph-connection.graph.unexist", e,
-                                            graph, host, port);
+                throw new ExternalException("graph-connection.graph.unexist", e, graph, host, port);
             }
             if (!isAcceptable(message)) {
                 throw e;

pom.xml

@@ -530,6 +530,14 @@
                             <goal>clean</goal>
                         </goals>
                     </execution>
+                    <!-- auto delete .flattened-pom.xml after "install" step -->
+                    <execution>
+                        <id>remove-flattened-pom</id>
+                        <phase>install</phase>
+                        <goals>
+                            <goal>clean</goal>
+                        </goals>
+                    </execution>
                 </executions>
             </plugin>
         </plugins>