chore(license): fix 3rd party refer in LICENSE

also add sky-walking action to check license header

.github/workflows/check-dependencies.yml

@@ -10,10 +10,10 @@ jobs:
     steps:
       - name: Checkout source
         uses: actions/checkout@v3
-      - name: Set up JDK 8
+      - name: Set up JDK 11
         uses: actions/setup-java@v3
         with:
-          java-version: '8'
+          java-version: '11'
           distribution: 'adopt'
       - name: mvn install
         run: |

.github/workflows/ci.yml

@@ -10,7 +10,7 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     strategy:
       fail-fast: false
       matrix:
@@ -37,12 +37,13 @@ jobs:
 
       - name: License check(RAT)
         run: |
-          mvn apache-rat:check | grep -v "Downloading\|Downloaded\|Progress"
-          find ./ -name rat.txt -print0 | xargs -0 -I file cat file > merged-rat.txt && cat merged-rat.txt
+          mvn apache-rat:check -ntp
+          find ./ -name rat.txt -print0 | xargs -0 -I file cat file > merged-rat.txt
+          grep "Binaries" merged-rat.txt -C 3 && cat merged-rat.txt
 
       - name: Compile
         run: |
-          mvn compile -Dmaven.javadoc.skip=true | grep -v "Downloading\|Downloaded"
+          mvn compile -Dmaven.javadoc.skip=true -ntp
 
       - name: Run test
         run: |

.github/workflows/license-checker.yml

@@ -0,0 +1,34 @@
+name: License checker
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  check-license:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      # More info could refer to: https://github.com/apache/skywalking-eyes
+      - name: Check License Header
+        uses: apache/skywalking-eyes@main
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          log: info
+          config: .licenserc.yaml
+
+      - uses: actions/setup-java@v3
+        with:
+          java-version: '11'
+          distribution: 'adopt'
+
+      - name: License check(RAT)
+        run: |
+          mvn apache-rat:check -ntp
+          find ./ -name rat.txt -print0 | xargs -0 -I file cat file > merged-rat.txt
+          grep "Binaries" merged-rat.txt -C 3 && cat merged-rat.txt

.github/workflows/stale.yml

@@ -20,8 +20,8 @@ jobs:
         stale-pr-message: 'Due to the lack of activity, the current pr is marked as stale and will be closed after 180 days, any update will remove the stale label'
         stale-issue-label: 'inactive'
         stale-pr-label: 'inactive'
-        exempt-issue-labels: 'feature,bug,enhancement,improvement,wontfix,todo,help wanted'
-        exempt-pr-labels: 'feature,bug,enhancement,improvement,wontfix,todo,help wanted'
+        exempt-issue-labels: 'feature,bug,enhancement,improvement,todo,guide,doc,help wanted,security'
+        exempt-pr-labels: 'feature,bug,enhancement,improvement,todo,guide,doc,help wanted,security'
         exempt-all-milestones: true
 
         days-before-issue-stale: 15

.licenserc.yaml

@@ -0,0 +1,77 @@
+#
+# 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.
+#
+
+header: # `header` section is configurations for source codes license header.
+  license:
+    spdx-id: Apache-2.0 # the spdx id of the license, it's convenient when your license is standard SPDX license.
+    copyright-owner: Apache Software Foundation # the copyright owner to replace the [owner] in the `spdx-id` template.
+    content: | # `license` will be used as the content when `fix` command needs to insert a license header.
+      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.
+    # `pattern` is optional regexp if all the file headers are the same as `license` or the license of `spdx-id` and `copyright-owner`.
+    pattern: |
+      Licensed to the Apache Software Foundation under one or more contributor
+      license agreements. See the NOTICE file distributed with
+      this work for additional information regarding copyright
+      ownership. The Apache Software Foundation 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.
+  paths: # `paths` are the path list that will be checked (and fixed) by license-eye, default is ['**'].
+    - '**'
+
+  paths-ignore: # `paths-ignore` are the path list that will be ignored by license-eye.
+    - '.gitignore'
+    - 'LICENSE'
+    - 'NOTICE'
+    - 'DISCLAIMER'
+    - '**/*.md'
+    - '**/*.versionsBackup'
+    - '**/*.log'
+    - '**/*.txt'
+    - '**/*.csv'
+    - '**/*.json'
+    - '**/*.svg'
+    - '**/*.gitattributes'
+    - '**/.flattened-pom.xml'
+    - '**/.prettierrc'
+    - '**/.stylelintrc'
+    - 'assembly/**'
+    - '.github/**/*'
+    - '**/target/*'
+  comment: on-failure # on what condition license-eye will comment on the pull request, `on-failure`, `always`, `never`.
+
+  # license-location-threshold specifies the index threshold where the license header can be located,
+  # after all, a "header" cannot be TOO far from the file start.
+  license-location-threshold: 80

hugegraph-common/src/main/java/org/apache/hugegraph/rest/AbstractRestClient.java

@@ -427,13 +427,8 @@ private static MediaType parseCustomContentType(MultivaluedMap<String, Object> h
     private static void configConnectionManager(String url, ClientConfig conf) {
         /*
          * Using httpclient with connection pooling, and configuring the
-         * jersey connector, reference:
-         * http://www.theotherian.com/2013/08/jersey-client-2.0-httpclient-timeouts-max-connections.html
-         * https://stackoverflow.com/questions/43228051/memory-issue-with-jax-rs-using-jersey/46175943#46175943
-         *
-         * But the jersey that has been released in the maven central
-         * repository seems to have a bug.
-         * https://github.com/jersey/jersey/pull/3752
+         * jersey connector. But the jersey that has been released in the maven central
+         * repository seems to have a bug: https://github.com/jersey/jersey/pull/3752
          */
         PoolingHttpClientConnectionManager pool = connectionManager(url, conf);
         Object maxTotal = conf.getProperty("maxTotal");

hugegraph-common/src/main/java/org/apache/hugegraph/util/Bytes.java

@@ -38,8 +38,7 @@ public final class Bytes {
     public static final long PB = GB * MB;
     public static final long EB = GB * GB;
 
-    private static final Comparator<byte[]> CMP =
-                         UnsignedBytes.lexicographicalComparator();
+    private static final Comparator<byte[]> CMP = UnsignedBytes.lexicographicalComparator();
 
     public static int compare(byte[] bytes1, byte[] bytes2) {
         return CMP.compare(bytes1, bytes2);

hugegraph-common/src/main/java/org/apache/hugegraph/util/CheckSocket.java

@@ -1,55 +1,37 @@
-// Copyright 2017 JanusGraph Authors
-//
-// Licensed 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.
+/*
+ * 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.
+ */
 
 package org.apache.hugegraph.util;
 
-import java.io.IOException;
+import static java.lang.System.exit;
+
 import java.net.InetAddress;
 import java.net.Socket;
 
-/*
- *  This doesn't really belong here.  It's only used in the zipfile
- *  distribution to check whether Gremlin Server or ES are listening on
- *  their respective TCP ports.    But it's so tiny that I don't want
- *  to reorganize the repo to accommodate it (yet).
- *
- *  Many widely available *NIX programs do this task better (e.g.
- *  netcat, telnet, nmap, socat, ... we could even use netstat since
- *  we're interested only in the status of local ports).  But we want
- *  to keep the JanusGraph distribution self-contained insofar as is
- *  reasonable.
- */
 public final class CheckSocket {
 
-    private static final int E_USAGE = 1;
-    private static final int E_FAILED = 2;
-    private static final String MSG_USAGE =
-            "Usage: " + CheckSocket.class.getSimpleName() + " hostname port";
-
     public static void main(String[] args) {
-        if (args.length != 2) {
-            System.err.println(MSG_USAGE);
-            System.exit(E_USAGE);
-        }
         try {
-            Socket s = new Socket(InetAddress.getByName(args[0]),
-                                  Integer.parseInt(args[1]));
-            s.close();
-            System.exit(0);
-        } catch (IOException e) {
-            System.err.println(e);
-            System.exit(E_FAILED);
+            // Check if the socket connection can be closed normally
+            new Socket(InetAddress.getByName(args[0]), Integer.parseInt(args[1])).close();
+            exit(0);
+        } catch (Exception e) {
+            e.printStackTrace();
+            exit(-1);
         }
     }
 }

hugegraph-common/src/main/java/org/apache/hugegraph/util/DateUtil.java

@@ -37,8 +37,7 @@ public final class DateUtil {
             "yyyy-MM-dd HH:mm:ss.SSS"
     );
 
-    private static final Map<String, SafeDateFormat> DATE_FORMATS =
-                                                     new ConcurrentHashMap<>();
+    private static final Map<String, SafeDateFormat> DATE_FORMATS = new ConcurrentHashMap<>();
 
     public static Date parse(String value) {
         for (Map.Entry<String, String> entry : VALID_DFS.entrySet()) {
@@ -47,8 +46,7 @@ public static Date parse(String value) {
             }
         }
         throw new IllegalArgumentException(String.format(
-                  "Expected date format is: %s, but got '%s'",
-                  VALID_DFS.values(), value));
+                  "Expected date format is: %s, but got '%s'", VALID_DFS.values(), value));
     }
 
     public static Date parse(String value, String df) {

hugegraph-common/src/main/java/org/apache/hugegraph/util/E.java

@@ -40,9 +40,7 @@ public static void checkNotEmpty(Collection<?> collection, String elem) {
                                     "The '%s' can't be empty", elem);
     }
 
-    public static void checkNotEmpty(Collection<?> collection,
-                                     String elem,
-                                     String owner) {
+    public static void checkNotEmpty(Collection<?> collection, String elem, String owner) {
         Preconditions.checkArgument(!collection.isEmpty(),
                                     "The '%s' of '%s' can't be empty",
                                     elem, owner);

hugegraph-common/src/main/java/org/apache/hugegraph/util/LongEncoding.java

@@ -17,10 +17,6 @@
 
 package org.apache.hugegraph.util;
 
-/**
- * Utility class for encoding longs in strings based on:
- * @see <a href="http://stackoverflow.com/questions/2938482/encode-decode-a-long-to-a-string-using-a-fixed-set-of-letters-in-java">encode decode long to string</a>
- */
 public final class LongEncoding {
 
     private static final String B64_SYMBOLS =

hugegraph-common/src/main/java/org/apache/hugegraph/util/NumericUtil.java

@@ -291,12 +291,9 @@ public static boolean isNumber(Object value) {
 
     public static boolean isNumber(Class<?> clazz) {
         if (clazz.isPrimitive()) {
-            if (clazz == int.class || clazz == long.class ||
-                clazz == float.class || clazz == double.class ||
-                clazz == short.class || clazz == byte.class) {
-                return true;
-            }
-            return false;
+            return clazz == int.class || clazz == long.class ||
+                   clazz == float.class || clazz == double.class ||
+                   clazz == short.class || clazz == byte.class;
         }
         return Number.class.isAssignableFrom(clazz);
     }

hugegraph-common/src/main/java/org/apache/hugegraph/util/OrderLimitMap.java

@@ -24,20 +24,15 @@
 import com.google.common.base.Functions;
 import com.google.common.collect.Ordering;
 
-/**
- * Reference:
- * <a href="https://stackoverflow.com/questions/109383/sort-a-mapkey-value-by-values">...</a>
- */
-public class OrderLimitMap<K extends Comparable<K>, V extends Comparable<V>>
-       extends TreeMap<K, V> {
+public class OrderLimitMap<K extends Comparable<K>, V extends Comparable<V>> extends TreeMap<K, V> {
 
     private static final long serialVersionUID = 756490437953358633L;
 
     private final int capacity;
     private final Map<K, V> valueMap;
 
     private static <V extends Comparable<V>> Ordering<? super V> incr() {
-        return Ordering.from((V o1, V o2) -> o1.compareTo(o2));
+        return Ordering.from(Comparable::compareTo);
     }
 
     private static <V extends Comparable<V>> Ordering<? super V> decr() {

hugegraph-common/src/main/java/org/apache/hugegraph/util/VersionUtil.java

@@ -75,7 +75,6 @@ public static String getImplementationVersion(Class<?> clazz) {
         /*
          * We don't use Package.getImplementationVersion() due to
          * a duplicate package would override the origin package info.
-         * https://stackoverflow.com/questions/1272648/reading-my-own-jars-manifest
          */
         String className = clazz.getSimpleName() + ".class";
         String classPath = Objects.requireNonNull(clazz.getResource(className)).toString();
@@ -137,10 +136,6 @@ public static String getPomVersion() {
         }
     }
 
-    /**
-     * class Version for compare
-     * https://stackoverflow.com/questions/198431/how-do-you-compare-two-version-strings-in-java
-     */
     public static class Version implements Comparable<Version> {
 
         public static Version of(Class<?> clazz) {