add sentinel webflux example and modify sentinel web example

spring-cloud-alibaba-examples/pom.xml

@@ -21,6 +21,7 @@
         <module>sentinel-example/sentinel-dubbo-example/sentinel-dubbo-provider-example</module>
         <module>sentinel-example/sentinel-dubbo-example/sentinel-dubbo-consumer-example</module>
         <module>sentinel-example/sentinel-dubbo-example/sentinel-dubbo-api</module>
+        <module>sentinel-example/sentinel-webflux-example</module>
         <module>nacos-example/nacos-discovery-example</module>
         <module>nacos-example/nacos-config-example</module>
         <module>nacos-example/nacos-gateway-example</module>

spring-cloud-alibaba-examples/sentinel-example/sentinel-core-example/pom.xml

@@ -31,6 +31,11 @@
             <artifactId>spring-boot-starter-actuator</artifactId>
         </dependency>
 
+        <dependency>
+            <groupId>com.alibaba.csp</groupId>
+            <artifactId>sentinel-web-servlet</artifactId>
+        </dependency>
+
         <!--<dependency>-->
         <!--<groupId>com.alibaba.csp</groupId>-->
         <!--<artifactId>sentinel-datasource-nacos</artifactId>-->

spring-cloud-alibaba-examples/sentinel-example/sentinel-core-example/src/main/resources/flowrule.json

@@ -1,6 +1,6 @@
 [
   {
-    "resource": "resource",
+    "resource": "/hello",
     "controlBehavior": 0,
     "count": 1,
     "grade": 1,

spring-cloud-alibaba-examples/sentinel-example/sentinel-webflux-example/pom.xml

@@ -0,0 +1,77 @@
+<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+
+    <parent>
+        <groupId>org.springframework.cloud</groupId>
+        <artifactId>spring-cloud-alibaba-examples</artifactId>
+        <version>0.9.1.BUILD-SNAPSHOT</version>
+        <relativePath>../../pom.xml</relativePath>
+    </parent>
+    <modelVersion>4.0.0</modelVersion>
+
+
+    <artifactId>sentinel-webflux-example</artifactId>
+    <packaging>jar</packaging>
+    <description>Example demonstrating how to use sentinel with webflux</description>
+
+
+    <dependencies>
+
+        <dependency>
+            <groupId>org.springframework.cloud</groupId>
+            <artifactId>spring-cloud-starter-alibaba-sentinel</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-webflux</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-actuator</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>com.alibaba.csp</groupId>
+            <artifactId>sentinel-spring-webflux-adapter</artifactId>
+        </dependency>
+
+        <!--<dependency>-->
+        <!--<groupId>com.alibaba.csp</groupId>-->
+        <!--<artifactId>sentinel-datasource-nacos</artifactId>-->
+        <!--</dependency>-->
+        <!--<dependency>-->
+        <!--<groupId>com.alibaba.csp</groupId>-->
+        <!--<artifactId>sentinel-datasource-zookeeper</artifactId>-->
+        <!--</dependency>-->
+        <!--<dependency>-->
+        <!--<groupId>com.alibaba.csp</groupId>-->
+        <!--<artifactId>sentinel-datasource-apollo</artifactId>-->
+        <!--</dependency>-->
+        <!-- define in spring-boot-autoconfigure module -->
+        <!--<dependency>-->
+        <!--<groupId>com.fasterxml.jackson.dataformat</groupId>-->
+        <!--<artifactId>jackson-dataformat-xml</artifactId>-->
+        <!--</dependency>-->
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+            </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-deploy-plugin</artifactId>
+                <version>${maven-deploy-plugin.version}</version>
+                <configuration>
+                    <skip>true</skip>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>

spring-cloud-alibaba-examples/sentinel-example/sentinel-webflux-example/src/main/java/org/springframework/cloud/alibaba/cloud/examples/MyConfiguration.java

@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2018 the original author or 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
+ *
+ *      https://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.springframework.cloud.alibaba.cloud.examples;
+
+import static org.springframework.web.reactive.function.BodyInserters.fromObject;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
+import org.springframework.web.reactive.function.server.ServerResponse;
+import org.springframework.web.server.ServerWebExchange;
+
+import com.alibaba.csp.sentinel.adapter.spring.webflux.callback.BlockRequestHandler;
+
+import reactor.core.publisher.Mono;
+
+/**
+ * @author <a href="mailto:fangjian0423@gmail.com">Jim</a>
+ */
+@Configuration
+public class MyConfiguration {
+
+	@Bean
+	public BlockRequestHandler blockRequestHandler() {
+		return new BlockRequestHandler() {
+			@Override
+			public Mono<ServerResponse> handleRequest(ServerWebExchange exchange,
+					Throwable t) {
+				return ServerResponse.status(HttpStatus.TOO_MANY_REQUESTS)
+						.contentType(MediaType.APPLICATION_JSON_UTF8)
+						.body(fromObject("block"));
+			}
+		};
+	}
+
+}

spring-cloud-alibaba-examples/sentinel-example/sentinel-webflux-example/src/main/java/org/springframework/cloud/alibaba/cloud/examples/SentinelWebFluxApplication.java

@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2018 the original author or 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
+ *
+ *      https://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.springframework.cloud.alibaba.cloud.examples;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+/**
+ * @author <a href="mailto:fangjian0423@gmail.com">Jim</a>
+ */
+@SpringBootApplication
+public class SentinelWebFluxApplication {
+
+	public static void main(String[] args) {
+		SpringApplication.run(SentinelWebFluxApplication.class, args);
+	}
+
+}

spring-cloud-alibaba-examples/sentinel-example/sentinel-webflux-example/src/main/java/org/springframework/cloud/alibaba/cloud/examples/SentinelWebFluxController.java

@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2018 the original author or 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
+ *
+ *      https://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.springframework.cloud.alibaba.cloud.examples;
+
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import com.alibaba.csp.sentinel.adapter.reactor.SentinelReactorTransformer;
+
+import reactor.core.publisher.Flux;
+import reactor.core.publisher.Mono;
+
+/**
+ * @author <a href="mailto:fangjian0423@gmail.com">Jim</a>
+ */
+@RestController
+public class SentinelWebFluxController {
+
+	@GetMapping("/mono")
+	public Mono<String> mono() {
+		return Mono.just("simple string")
+				// transform the publisher here.
+				.transform(new SentinelReactorTransformer<>("mono"));
+	}
+
+	@GetMapping("/flux")
+	public Flux<String> flux() {
+		return Flux.fromArray(new String[] { "a", "b", "c" })
+				// transform the publisher here.
+				.transform(new SentinelReactorTransformer<>("flux"));
+	}
+
+}

spring-cloud-alibaba-examples/sentinel-example/sentinel-webflux-example/src/main/resources/application.properties

@@ -0,0 +1,10 @@
+spring.application.name=sentinel-example
+server.port=18084
+management.endpoints.web.exposure.include=*
+spring.cloud.sentinel.transport.dashboard=localhost:8080
+spring.cloud.sentinel.eager=true
+
+
+spring.cloud.sentinel.datasource.ds1.file.file=classpath: flowrule.json
+spring.cloud.sentinel.datasource.ds1.file.data-type=json
+spring.cloud.sentinel.datasource.ds1.file.rule-type=flow

spring-cloud-alibaba-examples/sentinel-example/sentinel-webflux-example/src/main/resources/flowrule.json

@@ -0,0 +1,18 @@
+[
+  {
+    "resource": "/mono",
+    "controlBehavior": 0,
+    "count": 0,
+    "grade": 1,
+    "limitApp": "default",
+    "strategy": 0
+  },
+  {
+    "resource": "/flux",
+    "controlBehavior": 0,
+    "count": 0,
+    "grade": 1,
+    "limitApp": "default",
+    "strategy": 0
+  }
+]