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kezhenxu94 pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/skywalking.git


The following commit(s) were added to refs/heads/master by this push:
     new 0efc733  Replace zuul proxy with spring cloud gateway 2.x. in webapp 
module. (#7220)
0efc733 is described below

commit 0efc73390185f5eff301418303c4ec9c868a3920
Author: Jared Tan <[email protected]>
AuthorDate: Sun Jul 4 10:24:56 2021 +0800

    Replace zuul proxy with spring cloud gateway 2.x. in webapp module. (#7220)
---
 .github/workflows/e2e.istio.yaml                   |  5 +-
 CHANGES.md                                         |  1 +
 apm-webapp/pom.xml                                 | 49 +++++----------
 apm-webapp/src/main/assembly/webapp.yml            | 45 ++++++++++----
 .../skywalking/apm/webapp/ApplicationStartUp.java  |  7 +--
 .../skywalking/apm/webapp/proxy/MvcConfig.java     | 40 ------------
 .../apm/webapp/proxy/NotFoundHandler.java          | 49 ---------------
 .../apm/webapp/proxy/RewritePathFilter.java        | 71 ----------------------
 apm-webapp/src/main/resources/application.yml      | 44 +++++++-------
 .../skywalking/apm/webapp/NotFoundHandlerTest.java | 63 -------------------
 .../apache/skywalking/apm/webapp/WebAppTest.java   | 67 --------------------
 dist-material/release-docs/LICENSE                 |  6 +-
 docker/docker-compose.yml                          |  2 +-
 docker/ui/Dockerfile.ui                            |  6 +-
 docker/ui/docker-entrypoint.sh                     | 11 +++-
 docs/en/setup/backend/ui-setup.md                  | 23 ++++---
 .../src/test/resources/docker-compose.one.yml      |  2 +-
 test/e2e/e2e-test/docker/base-compose.yml          |  2 +-
 .../e2e/e2e-test/docker/cluster/docker-compose.yml |  2 +-
 .../e2e/e2e-test/docker/gateway/docker-compose.yml |  2 +-
 20 files changed, 111 insertions(+), 386 deletions(-)

diff --git a/.github/workflows/e2e.istio.yaml b/.github/workflows/e2e.istio.yaml
index baae1af..e635a1d 100644
--- a/.github/workflows/e2e.istio.yaml
+++ b/.github/workflows/e2e.istio.yaml
@@ -30,6 +30,7 @@ env:
   TAG: ${{ github.sha }}
   SCRIPTS_DIR: test/e2e-mesh/e2e-istio/scripts
   SW_OAP_BASE_IMAGE: openjdk:11-jdk
+  SW_KUBERNETES_COMMIT_SHA: 6d5897616ce30ebb1706c0cf566ac36f733d93e0
 
 concurrency:
   group: e2e-istio-${{ github.event.pull_request.number || github.ref }}
@@ -95,7 +96,7 @@ jobs:
         run: |
           git clone https://github.com/apache/skywalking-kubernetes.git
           cd skywalking-kubernetes
-          git reset --hard 2fdcdc3bb39496bf49626755e8f60c998be5f587
+          git reset --hard $SW_KUBERNETES_COMMIT_SHA
           cd chart
           mkdir -p skywalking/files/conf.d/oap/ && cp 
../../test/e2e/e2e-test/src/test/resources/metadata-service-mapping.yaml 
skywalking/files/conf.d/oap/metadata-service-mapping.yaml
           helm dep up skywalking
@@ -237,7 +238,7 @@ jobs:
         run: |
           git clone https://github.com/apache/skywalking-kubernetes.git
           cd skywalking-kubernetes
-          git reset --hard dd749f25913830c47a97430618cefc4167612e75
+          git reset --hard $SW_KUBERNETES_COMMIT_SHA
           cd chart
           helm dep up skywalking
           helm -n istio-system install skywalking skywalking \
diff --git a/CHANGES.md b/CHANGES.md
index eef73ea..13e8235 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -71,6 +71,7 @@ Release Notes.
   rather than first time. This makes sure hot data never gets removed 
unexpectedly.
 * Support session expired threshold configurable. 
 * Fix InfluxDB storage-plugin Metrics#multiGet issue.
+* Replace zuul proxy with spring cloud gateway 2.x. in webapp module.
 
 #### UI
 
diff --git a/apm-webapp/pom.xml b/apm-webapp/pom.xml
index b2dade8..43c2984 100644
--- a/apm-webapp/pom.xml
+++ b/apm-webapp/pom.xml
@@ -17,7 +17,8 @@
   ~
   -->
 
-<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";>
+<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";>
     <parent>
         <artifactId>apm</artifactId>
         <groupId>org.apache.skywalking</groupId>
@@ -29,18 +30,17 @@
     <packaging>jar</packaging>
 
     <properties>
+        <java.version>1.8</java.version>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <spring.boot.version>1.5.22.RELEASE</spring.boot.version>
+        <spring.boot.version>2.4.8</spring.boot.version>
         <log4j.version>2.6.2</log4j.version>
         <gson.version>2.8.2</gson.version>
         <apache-httpclient.version>4.5.3</apache-httpclient.version>
-        
<spring-cloud-dependencies.version>Edgware.SR1</spring-cloud-dependencies.version>
+        
<spring-cloud-dependencies.version>2020.0.3</spring-cloud-dependencies.version>
         <frontend-maven-plugin.version>1.11.0</frontend-maven-plugin.version>
         <logback-classic.version>1.2.3</logback-classic.version>
         <jackson-version>2.12.2</jackson-version>
         <yaml.version>1.28</yaml.version>
-        <netty.version>4.1.65.Final</netty.version>
-        <tomcat.version>8.5.66</tomcat.version>
 
         <ui.path>${project.parent.basedir}/skywalking-ui</ui.path>
     </properties>
@@ -59,10 +59,15 @@
 
     <dependencies>
         <dependency>
-            <groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot-starter-web</artifactId>
-            <version>${spring.boot.version}</version>
+            <groupId>org.springframework.cloud</groupId>
+            <artifactId>spring-cloud-starter-gateway</artifactId>
         </dependency>
+
+        <dependency>
+            <groupId>org.springframework.cloud</groupId>
+            <artifactId>spring-cloud-starter-loadbalancer</artifactId>
+        </dependency>
+
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-actuator</artifactId>
@@ -81,11 +86,6 @@
             <version>${jackson-version}</version>
         </dependency>
         <dependency>
-            <groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot-configuration-processor</artifactId>
-            <version>${spring.boot.version}</version>
-        </dependency>
-        <dependency>
             <groupId>com.google.code.gson</groupId>
             <artifactId>gson</artifactId>
             <version>${gson.version}</version>
@@ -96,10 +96,6 @@
             <version>${apache-httpclient.version}</version>
         </dependency>
         <dependency>
-            <groupId>org.springframework.cloud</groupId>
-            <artifactId>spring-cloud-starter-netflix-zuul</artifactId>
-        </dependency>
-        <dependency>
             <groupId>ch.qos.logback</groupId>
             <artifactId>logback-classic</artifactId>
             <version>${logback-classic.version}</version>
@@ -110,21 +106,6 @@
             <version>${yaml.version}</version>
         </dependency>
         <dependency>
-            <groupId>io.netty</groupId>
-            <artifactId>netty-handler</artifactId>
-            <version>${netty.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.apache.tomcat.embed</groupId>
-            <artifactId>tomcat-embed-core</artifactId>
-            <version>${tomcat.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.apache.tomcat.embed</groupId>
-            <artifactId>tomcat-embed-websocket</artifactId>
-            <version>${tomcat.version}</version>
-        </dependency>
-        <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-test</artifactId>
             <version>${spring.boot.version}</version>
@@ -212,7 +193,9 @@
                 <executions>
                     <execution>
                         <goals>
-                            <goal>repackage</goal>
+                            <goal>
+                                repackage
+                            </goal>
                         </goals>
                     </execution>
                 </executions>
diff --git a/apm-webapp/src/main/assembly/webapp.yml 
b/apm-webapp/src/main/assembly/webapp.yml
index cb8e558..301a347 100644
--- a/apm-webapp/src/main/assembly/webapp.yml
+++ b/apm-webapp/src/main/assembly/webapp.yml
@@ -1,10 +1,9 @@
-# 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
+# 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
 #
@@ -17,10 +16,30 @@
 server:
   port: 8080
 
-collector:
-  path: /graphql
-  ribbon:
-    ReadTimeout: 10000
-    # Point to all backend's restHost:restPort, split by ,
-    listOfServers: 127.0.0.1:12800
+spring:
+  cloud:
+    gateway:
+      routes:
+        - id: oap-route
+          uri: lb://oap-service
+          predicates:
+            - Path=/graphql/**
+    discovery:
+      client:
+        simple:
+          instances:
+            oap-service:
+              - uri: http://127.0.0.1:12800
+            # - uri: http://<oap-host-1>:<oap-port1>
+            # - uri: http://<oap-host-2>:<oap-port2>
 
+  mvc:
+    throw-exception-if-no-handler-found: true
+
+  web:
+    resources:
+      add-mappings: true
+
+management:
+  server:
+    base-path: /manage
diff --git 
a/apm-webapp/src/main/java/org/apache/skywalking/apm/webapp/ApplicationStartUp.java
 
b/apm-webapp/src/main/java/org/apache/skywalking/apm/webapp/ApplicationStartUp.java
index 875ee13..cecf0ca 100644
--- 
a/apm-webapp/src/main/java/org/apache/skywalking/apm/webapp/ApplicationStartUp.java
+++ 
b/apm-webapp/src/main/java/org/apache/skywalking/apm/webapp/ApplicationStartUp.java
@@ -20,15 +20,10 @@ package org.apache.skywalking.apm.webapp;
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
-import org.springframework.boot.web.support.SpringBootServletInitializer;
-import org.springframework.cloud.netflix.zuul.EnableZuulProxy;
 
 @SpringBootApplication
-@EnableZuulProxy
-public class ApplicationStartUp extends SpringBootServletInitializer {
-
+public class ApplicationStartUp {
     public static void main(String[] args) {
         SpringApplication.run(ApplicationStartUp.class, args);
     }
-
 }
diff --git 
a/apm-webapp/src/main/java/org/apache/skywalking/apm/webapp/proxy/MvcConfig.java
 
b/apm-webapp/src/main/java/org/apache/skywalking/apm/webapp/proxy/MvcConfig.java
deleted file mode 100644
index 973d750..0000000
--- 
a/apm-webapp/src/main/java/org/apache/skywalking/apm/webapp/proxy/MvcConfig.java
+++ /dev/null
@@ -1,40 +0,0 @@
-/*
- * 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.skywalking.apm.webapp.proxy;
-
-import org.springframework.context.annotation.Configuration;
-import 
org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
-import 
org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
-
-/**
- * Additional MVC Configuration.
- */
-@Configuration
-public class MvcConfig extends WebMvcConfigurerAdapter {
-
-    @Override
-    public void addResourceHandlers(final ResourceHandlerRegistry registry) {
-        
registry.addResourceHandler("/index.html").addResourceLocations("classpath:/public/index.html");
-        
registry.addResourceHandler("/css/**").addResourceLocations("classpath:/public/css/");
-        
registry.addResourceHandler("/img/**").addResourceLocations("classpath:/public/img/");
-        
registry.addResourceHandler("/js/**").addResourceLocations("classpath:/public/js/");
-        
registry.addResourceHandler("/favicon.ico").addResourceLocations("classpath:/public/favicon.ico");
-        
registry.addResourceHandler("/logo.png").addResourceLocations("classpath:/public/logo.png");
-    }
-}
\ No newline at end of file
diff --git 
a/apm-webapp/src/main/java/org/apache/skywalking/apm/webapp/proxy/NotFoundHandler.java
 
b/apm-webapp/src/main/java/org/apache/skywalking/apm/webapp/proxy/NotFoundHandler.java
deleted file mode 100644
index 2ac55c9..0000000
--- 
a/apm-webapp/src/main/java/org/apache/skywalking/apm/webapp/proxy/NotFoundHandler.java
+++ /dev/null
@@ -1,49 +0,0 @@
-/*
- * 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.skywalking.apm.webapp.proxy;
-
-import java.io.IOException;
-import java.nio.charset.Charset;
-import org.slf4j.LoggerFactory;
-import org.springframework.core.io.ClassPathResource;
-import org.springframework.http.HttpStatus;
-import org.springframework.http.MediaType;
-import org.springframework.http.ResponseEntity;
-import org.springframework.util.StreamUtils;
-import org.springframework.web.bind.annotation.ControllerAdvice;
-import org.springframework.web.bind.annotation.ExceptionHandler;
-import org.springframework.web.servlet.NoHandlerFoundException;
-
-/**
- * NotFoundHandler handles the single page application url routing.
- */
-@ControllerAdvice
-public class NotFoundHandler {
-    @ExceptionHandler(NoHandlerFoundException.class)
-    public ResponseEntity<String> renderDefaultPage() {
-        try {
-            String body = StreamUtils.copyToString(new 
ClassPathResource("/public/index.html").getInputStream(), Charset
-                .defaultCharset());
-            return 
ResponseEntity.ok().contentType(MediaType.TEXT_HTML).body(body);
-        } catch (final IOException e) {
-            LoggerFactory.getLogger(NotFoundHandler.class).error("err", e);
-            return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR)
-                                 .body("There was an error completing the 
action.");
-        }
-    }
-}
diff --git 
a/apm-webapp/src/main/java/org/apache/skywalking/apm/webapp/proxy/RewritePathFilter.java
 
b/apm-webapp/src/main/java/org/apache/skywalking/apm/webapp/proxy/RewritePathFilter.java
deleted file mode 100644
index 24f0331..0000000
--- 
a/apm-webapp/src/main/java/org/apache/skywalking/apm/webapp/proxy/RewritePathFilter.java
+++ /dev/null
@@ -1,71 +0,0 @@
-/*
- * 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.skywalking.apm.webapp.proxy;
-
-import com.netflix.zuul.ZuulFilter;
-import com.netflix.zuul.context.RequestContext;
-import org.springframework.boot.context.properties.ConfigurationProperties;
-import org.springframework.stereotype.Component;
-
-import static 
org.springframework.cloud.netflix.zuul.filters.support.FilterConstants.PRE_DECORATION_FILTER_ORDER;
-
-/**
- * Rewrite url to rewritePath
- */
-@Component
-@ConfigurationProperties(prefix = "collector")
-public class RewritePathFilter extends ZuulFilter {
-
-    private static final String REQUEST_URI = "requestURI";
-
-    private static final int ORDER = PRE_DECORATION_FILTER_ORDER + 2;
-
-    private String path;
-
-    public String getPath() {
-        return path;
-    }
-
-    public void setPath(String path) {
-        this.path = path;
-    }
-
-    @Override
-    public int filterOrder() {
-        return ORDER;
-    }
-
-    @Override
-    public String filterType() {
-        return "pre";
-    }
-
-    @Override
-    public boolean shouldFilter() {
-        RequestContext ctx = RequestContext.getCurrentContext();
-        return ctx.containsKey(REQUEST_URI);
-    }
-
-    @Override
-    public Object run() {
-        RequestContext ctx = RequestContext.getCurrentContext();
-        ctx.set(REQUEST_URI, path);
-        return null;
-    }
-}
diff --git a/apm-webapp/src/main/resources/application.yml 
b/apm-webapp/src/main/resources/application.yml
index b885b48..c4b0b86 100755
--- a/apm-webapp/src/main/resources/application.yml
+++ b/apm-webapp/src/main/resources/application.yml
@@ -17,28 +17,30 @@
 server:
   port: 8080
 
-zuul:
-  ignoredServices: '*'
-  routes:
-    api:
-      path: /graphql
-      serviceId: collector
-    login:
-      path: /login/account
-      serviceId: collector
-
-collector:
-  path: /graphql
-  ribbon:
-    # Point to all backend's restHost:restPort, split by ,
-    listOfServers: 127.0.0.1:12800
-
 spring:
-  resources:
-    add-mappings: false
+  cloud:
+    gateway:
+      routes:
+        - id: oap-route
+          uri: lb://oap-service
+          predicates:
+            - Path=/graphql/**
+    discovery:
+      client:
+        simple:
+          instances:
+            oap-service:
+              - uri: http://127.0.0.1:12800
+            # - uri: http://<oap-host-1>:<oap-port1>
+            # - uri: http://<oap-host-2>:<oap-port2>
+
   mvc:
     throw-exception-if-no-handler-found: true
-      
+
+  web:
+    resources:
+      add-mappings: true
+
 management:
-  # Customizing the management endpoint paths
-  context-path: /manage
+  server:
+    base-path: /manage
diff --git 
a/apm-webapp/src/test/java/org/apache/skywalking/apm/webapp/NotFoundHandlerTest.java
 
b/apm-webapp/src/test/java/org/apache/skywalking/apm/webapp/NotFoundHandlerTest.java
deleted file mode 100644
index 8a253cd..0000000
--- 
a/apm-webapp/src/test/java/org/apache/skywalking/apm/webapp/NotFoundHandlerTest.java
+++ /dev/null
@@ -1,63 +0,0 @@
-/*
- * 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.skywalking.apm.webapp;
-
-import java.io.IOException;
-import org.apache.skywalking.apm.webapp.proxy.NotFoundHandler;
-import org.junit.Before;
-import org.junit.Test;
-import org.junit.runner.RunWith;
-import org.mockito.Mock;
-import org.mockito.MockitoAnnotations;
-import org.powermock.api.mockito.PowerMockito;
-import org.powermock.core.classloader.annotations.PrepareForTest;
-import org.powermock.modules.junit4.PowerMockRunner;
-import org.springframework.core.io.ClassPathResource;
-import org.springframework.http.HttpStatus;
-import org.springframework.http.ResponseEntity;
-
-import static org.assertj.core.api.Assertions.assertThat;
-import static org.mockito.Mockito.mock;
-import static org.mockito.Mockito.when;
-
-@RunWith(PowerMockRunner.class)
-@PrepareForTest(value = {
-    NotFoundHandler.class,
-    ClassPathResource.class
-})
-public class NotFoundHandlerTest {
-    @Mock
-    private NotFoundHandler notFoundHandler;
-
-    @Before
-    public void setUp() {
-        MockitoAnnotations.initMocks(this);
-    }
-
-    @Test
-    public void shouldInternalErrorWhenIndexPageIsMissing() throws Exception {
-        ClassPathResource mockIndexResource = mock(ClassPathResource.class);
-        when(mockIndexResource.getInputStream()).thenThrow(new IOException());
-
-        
PowerMockito.whenNew(ClassPathResource.class).withArguments("/public/index.html").thenReturn(mockIndexResource);
-
-        when(notFoundHandler.renderDefaultPage()).thenCallRealMethod();
-        ResponseEntity<String> response = notFoundHandler.renderDefaultPage();
-        
assertThat(response.getStatusCode()).isEqualTo(HttpStatus.INTERNAL_SERVER_ERROR);
-    }
-}
diff --git 
a/apm-webapp/src/test/java/org/apache/skywalking/apm/webapp/WebAppTest.java 
b/apm-webapp/src/test/java/org/apache/skywalking/apm/webapp/WebAppTest.java
deleted file mode 100644
index e0b1e1d..0000000
--- a/apm-webapp/src/test/java/org/apache/skywalking/apm/webapp/WebAppTest.java
+++ /dev/null
@@ -1,67 +0,0 @@
-/*
- * 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.skywalking.apm.webapp;
-
-import org.apache.skywalking.apm.webapp.proxy.NotFoundHandler;
-import org.junit.Test;
-import org.junit.runner.RunWith;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.boot.test.autoconfigure.web.servlet.WebMvcTest;
-import org.springframework.boot.test.mock.mockito.MockBean;
-import org.springframework.test.context.junit4.SpringRunner;
-import org.springframework.test.web.servlet.MockMvc;
-
-import static org.hamcrest.CoreMatchers.containsString;
-import static org.mockito.Mockito.never;
-import static org.mockito.Mockito.only;
-import static org.mockito.Mockito.verify;
-import static org.mockito.Mockito.when;
-import static 
org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
-import static 
org.springframework.test.web.servlet.result.MockMvcResultHandlers.print;
-import static 
org.springframework.test.web.servlet.result.MockMvcResultMatchers.content;
-import static 
org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
-
-@WebMvcTest
-@RunWith(SpringRunner.class)
-public class WebAppTest {
-    @Autowired
-    private MockMvc mvc;
-    @MockBean
-    private NotFoundHandler notFoundHandler;
-
-    @Test
-    public void shouldGetStaticResources() throws Exception {
-        when(notFoundHandler.renderDefaultPage()).thenCallRealMethod();
-
-        mvc.perform(get("/index.html"))
-           .andDo(print())
-           .andExpect(status().isOk())
-           
.andExpect(content().string(containsString("<title>SkyWalking</title>")));
-
-        verify(notFoundHandler, never()).renderDefaultPage();
-    }
-
-    @Test
-    public void shouldRedirectToIndexWhenResourcesIsAbsent() throws Exception {
-        when(notFoundHandler.renderDefaultPage()).thenCallRealMethod();
-
-        
mvc.perform(get("/absent.html")).andDo(print()).andExpect(status().isOk());
-
-        verify(notFoundHandler, only()).renderDefaultPage();
-    }
-}
\ No newline at end of file
diff --git a/dist-material/release-docs/LICENSE 
b/dist-material/release-docs/LICENSE
index 8336e69..98a9dd8 100755
--- a/dist-material/release-docs/LICENSE
+++ b/dist-material/release-docs/LICENSE
@@ -251,7 +251,9 @@ The text of each license is the standard Apache 2.0 license.
     Joda-Time 2.10.5: http://www.joda.org/joda-time/ , Apache 2.0
     Joda-Convert 2.2.1: http://www.joda.org/joda-convert/ , Apache 2.0
     Spring Framework 4.3.14.RELEASE: 
https://github.com/spring-projects/spring-framework, Apache 2.0
-    Spring Boot 1.5.22.RELEASE: https://spring.io/, Apache 2.0
+    Spring Boot 2.4.8: https://spring.io/, Apache 2.0
+    Spring Cloud Gateway 3.0.3: https://spring.io/projects/spring-cloud, 
Apache-2.0
+    Spring Cloud Load Balancer 3.0.3: https://spring.io/projects/spring-cloud, 
Apache-2.0
     Spring Cloud Config 1.4.1: 
https://github.com/spring-cloud/spring-cloud-config, Apache-2.0
     Spring Cloud Netflix Zuul 1.3.0: 
https://github.com/spring-cloud/spring-cloud-netflix, Apache 2.0
     Apache: commons-logging 1.1.3: https://github.com/apache/commons-logging, 
Apache 2.0
@@ -270,7 +272,6 @@ The text of each license is the standard Apache 2.0 license.
     Apache: commons-io 2.4: https://github.com/apache/commons-io, Apache 2.0
     Apache: commons-compress 1.20: https://github.com/apache/commons-compress, 
Apache 2.0
     Apache: commons-collections4 4.4: 
https://mvnrepository.com/artifact/org.apache.commons/commons-collections4, 
Apache 2.0
-    Apache: tomcat 8.5.66: https://github.com/apache/tomcat/tree/trunk, Apache 
2.0
     Apache: freemarker 2.3.28: https://github.com/apache/freemarker, Apache 2.0
     netty 4.1.65: https://github.com/netty/netty/blob/4.1/LICENSE.txt, Apache 
2.0
     annotations 13.0: http://www.jetbrains.org, Apache 2.0
@@ -302,7 +303,6 @@ The text of each license is the standard Apache 2.0 license.
     rxnetty 0.4.9: https://github.com/ReactiveX/rxnetty, Apache 2.0
     servo 0.10.1: https://github.com/Netflix/servo, Apache 2.0
     validation-api 1.1.0.Final: http://beanvalidation.org/licensing/, Apache 
2.0
-    zuul-core 1.3.0: https://github.com/Netflix/zuul, Apache 2.0
     HikariCP 3.1.0: https://github.com/brettwooldridge/HikariCP, Apache 2.0
     zipkin 2.9.1: https://github.com/openzipkin/zipkin, Apache 2.0
     sharding-jdbc-core 2.0.3: 
https://github.com/sharding-sphere/sharding-sphere, Apache 2.0
diff --git a/docker/docker-compose.yml b/docker/docker-compose.yml
index aef4580..a41cab8 100644
--- a/docker/docker-compose.yml
+++ b/docker/docker-compose.yml
@@ -61,4 +61,4 @@ services:
     ports:
       - 8080:8080
     environment:
-      SW_OAP_ADDRESS: oap:12800
+      SW_OAP_ADDRESS: http://oap:12800
diff --git a/docker/ui/Dockerfile.ui b/docker/ui/Dockerfile.ui
index 5cb566c..d8003df 100644
--- a/docker/ui/Dockerfile.ui
+++ b/docker/ui/Dockerfile.ui
@@ -18,12 +18,12 @@ FROM adoptopenjdk/openjdk8:alpine
 
 ENV DIST_NAME=apache-skywalking-apm-bin \
     JAVA_OPTS=" -Xms256M " \
-    SW_OAP_ADDRESS="127.0.0.1:12800" \
-    SW_TIMEOUT="20000"
+    SW_OAP_ADDRESS="http://127.0.0.1:12800";
 
 COPY "$DIST_NAME.tar.gz" /
 
 RUN set -ex; \
+    apk add bash; \
     tar -xzf "$DIST_NAME.tar.gz"; \
     rm -rf "$DIST_NAME.tar.gz"; \
     rm -rf "$DIST_NAME/config"; \
@@ -37,4 +37,4 @@ COPY logback.xml webapp/
 
 EXPOSE 8080
 
-ENTRYPOINT ["sh", "docker-entrypoint.sh"]
\ No newline at end of file
+ENTRYPOINT ["bash", "docker-entrypoint.sh"]
\ No newline at end of file
diff --git a/docker/ui/docker-entrypoint.sh b/docker/ui/docker-entrypoint.sh
index 6771e22..80b85b7 100755
--- a/docker/ui/docker-entrypoint.sh
+++ b/docker/ui/docker-entrypoint.sh
@@ -20,7 +20,12 @@ set -e
 
 export LOGGING_CONFIG="webapp/logback.xml"
 
-[[ ! -z "$SW_OAP_ADDRESS" ]] && export 
COLLECTOR_RIBBON_LISTOFSERVERS=${SW_OAP_ADDRESS} && echo 
"COLLECTOR_RIBBON_LISTOFSERVERS=$COLLECTOR_RIBBON_LISTOFSERVERS"
-[[ ! -z "$SW_TIMEOUT" ]] && export COLLECTOR_RIBBON_READTIMEOUT=${SW_TIMEOUT} 
&& echo "COLLECTOR_RIBBON_READTIMEOUT=$COLLECTOR_RIBBON_READTIMEOUT"
+if [[ ! -z "$SW_OAP_ADDRESS" ]]; then
+  address_arr=(${SW_OAP_ADDRESS//,/ })
+  for i in "${!address_arr[@]}"
+  do
+      JAVA_OPTS="${JAVA_OPTS} 
-Dspring.cloud.discovery.client.simple.instances.oap-service[$i].uri=${address_arr[$i]}"
+  done
+fi
 
-exec java -XX:+UnlockExperimentalVMOptions -XX:+UseCGroupMemoryLimitForHeap 
-jar webapp/skywalking-webapp.jar "$@"
+exec java  ${JAVA_OPTS} -XX:+UnlockExperimentalVMOptions 
-XX:+UseCGroupMemoryLimitForHeap -jar webapp/skywalking-webapp.jar "$@"
diff --git a/docs/en/setup/backend/ui-setup.md 
b/docs/en/setup/backend/ui-setup.md
index c85f9f3..9614e50 100644
--- a/docs/en/setup/backend/ui-setup.md
+++ b/docs/en/setup/backend/ui-setup.md
@@ -13,13 +13,22 @@ Setting file of UI is  `webapp/webapp.yml` in distribution 
package. It is consti
 ```yaml
 server:
   port: 8080
-
-collector:
-  path: /graphql
-  ribbon:
-    ReadTimeout: 10000
-    # Point to all backend's restHost:restPort, split by , 
-    listOfServers: 10.2.34.1:12800,10.2.34.2:12800
+spring:
+  cloud:
+    gateway:
+      routes:
+        - id: oap-route
+          uri: lb://oap-service
+          predicates:
+            - Path=/graphql/**
+    discovery:
+      client:
+        simple:
+          instances:
+            oap-service:
+              # Point to all backend's restHost:restPort, split by URI arrays.
+              - uri: http://127.0.0.1:12800
+              - uri: http://instance-2:12800
 
 ```
 
diff --git a/test/e2e/e2e-common/src/test/resources/docker-compose.one.yml 
b/test/e2e/e2e-common/src/test/resources/docker-compose.one.yml
index 8097189..2d004b4 100644
--- a/test/e2e/e2e-common/src/test/resources/docker-compose.one.yml
+++ b/test/e2e/e2e-common/src/test/resources/docker-compose.one.yml
@@ -22,7 +22,7 @@ services:
       oap:
         condition: service_healthy
     environment:
-      SW_OAP_ADDRESS: oap:12800
+      SW_OAP_ADDRESS: http://oap:12800
     expose:
       - '8080'
     image: skywalking/ui:latest
diff --git a/test/e2e/e2e-test/docker/base-compose.yml 
b/test/e2e/e2e-test/docker/base-compose.yml
index 0674d4a..292ec0a 100644
--- a/test/e2e/e2e-test/docker/base-compose.yml
+++ b/test/e2e/e2e-test/docker/base-compose.yml
@@ -76,7 +76,7 @@ services:
     networks:
       - e2e
     environment:
-      - SW_OAP_ADDRESS=oap:12800
+      - SW_OAP_ADDRESS=http://oap:12800
 
   provider:
     build:
diff --git a/test/e2e/e2e-test/docker/cluster/docker-compose.yml 
b/test/e2e/e2e-test/docker/cluster/docker-compose.yml
index 2f3d491..418c24e 100644
--- a/test/e2e/e2e-test/docker/cluster/docker-compose.yml
+++ b/test/e2e/e2e-test/docker/cluster/docker-compose.yml
@@ -21,7 +21,7 @@ services:
       file: ../base-compose.yml
       service: ui
     environment:
-      - SW_OAP_ADDRESS=oap1:12800,oap2:12800
+      - SW_OAP_ADDRESS=http://oap1:12800,http://oap2:12800
     depends_on:
       oap1:
         condition: service_healthy
diff --git a/test/e2e/e2e-test/docker/gateway/docker-compose.yml 
b/test/e2e/e2e-test/docker/gateway/docker-compose.yml
index 03b37cd..c94f240 100644
--- a/test/e2e/e2e-test/docker/gateway/docker-compose.yml
+++ b/test/e2e/e2e-test/docker/gateway/docker-compose.yml
@@ -86,7 +86,7 @@ services:
       file: ../base-compose.yml
       service: ui
     environment:
-      - SW_OAP_ADDRESS=oap1:12800,oap2:12800
+      - SW_OAP_ADDRESS=http://oap1:12800,http://oap2:12800
     depends_on:
       oap1:
         condition: service_healthy

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