docs:add license checker.

Author: SkyeBeFreeman

.github/workflows/license-checker.yml

@@ -0,0 +1,19 @@
+name: License checker
+
+on:
+  push:
+    branches:
+      - main
+      - release*
+  pull_request:
+    branches:
+      - main
+      - release*
+jobs:
+  check-license:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout codes
+        uses: actions/checkout@v4
+      - name: Check License Header
+        uses: apache/[email protected]

.licenserc.yaml

@@ -0,0 +1,23 @@
+header:
+  license:
+    content: |
+      Tencent is pleased to support the open source community by making Polaris available.
+
+      Copyright (C) 2019 THL A29 Limited, a Tencent company. All rights reserved.
+      
+      Licensed under the BSD 3-Clause License (the "License");
+      you may not use this file except in compliance with the License.
+      You may obtain a copy of the License at
+      
+      https://opensource.org/licenses/BSD-3-Clause
+      
+      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:
+    - "**/tencent/**"
+  language:
+    Java:
+      extensions:
+        - ".java"

polaris-distribution/polaris-all/pom.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0"
-        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-        xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 
     <parent>
         <artifactId>polaris-parent</artifactId>
@@ -24,6 +24,12 @@
             <version>${project.version}</version>
             <scope>compile</scope>
         </dependency>
+        <dependency>
+            <groupId>com.tencent.polaris</groupId>
+            <artifactId>polaris-test-common</artifactId>
+            <version>${project.version}</version>
+            <scope>compile</scope>
+        </dependency>
         <dependency>
             <groupId>com.tencent.polaris</groupId>
             <artifactId>polaris-test-mock-discovery</artifactId>

polaris-plugins/polaris-plugins-router/router-nearby/src/main/java/com/tencent/polaris/plugins/router/nearby/NearbyRouter.java

@@ -156,8 +156,7 @@ public RouteResult router(RouteInfo routeInfo, ServiceInstances serviceInstances
                         String.format("can not find any instance by level %s", minLevel.name()));
             }
             //已经循环了一圈
-            return new RouteResult(selectInstances(
-                    serviceInstances, minAvailableLevel, clientLocationInfo), RouteResult.State.Next);
+            return new RouteResult(instances, RouteResult.State.Next);
         }
         CheckResult checkResult = new CheckResult();
         for (int i = minLevel.ordinal(); i <= maxLevel.ordinal(); i++) {

polaris-plugins/polaris-plugins-router/router-rule/src/main/java/com/tencent/polaris/plugins/router/rule/RuleBasedRouter.java

@@ -141,13 +141,15 @@ private boolean matchSource(List<RoutingProto.Source> sources, Service sourceSer
                         matched = false;
                         continue;
                     }
+                    // 如果服务名不等于“*”，且服务名规则以“!”开头，则使用取反匹配
                     if (!RuleUtils.MATCH_ALL.equals(service) && StringUtils.startsWith(service, "!")) {
                         String realService = StringUtils.substring(service, 1);
                         if (StringUtils.equals(realService, sourceService.getService())) {
                             matched = false;
                             continue;
                         }
                     }
+                    // 如果服务名不等于“*”，且服务名规则以“*”开头，则使用正则匹配
                     if (!RuleUtils.MATCH_ALL.equals(service) && StringUtils.startsWith(service, "*")) {
                         String regex = StringUtils.substring(service, 1);
                         Pattern pattern = Pattern.compile(regex);