init

sentinel/sentinel-demo/sentinel-demo-annotation-spring-aop/pom.xml

@@ -0,0 +1,43 @@
+<?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">
+    <parent>
+        <artifactId>sentinel-demo</artifactId>
+        <groupId>com.alibaba.csp</groupId>
+        <version>1.8.3</version>
+    </parent>
+    <modelVersion>4.0.0</modelVersion>
+
+    <artifactId>sentinel-demo-annotation-spring-aop</artifactId>
+
+    <properties>
+        <spring.boot.version>2.0.5.RELEASE</spring.boot.version>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>com.alibaba.csp</groupId>
+            <artifactId>sentinel-core</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>com.alibaba.csp</groupId>
+            <artifactId>sentinel-annotation-aspectj</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>com.alibaba.csp</groupId>
+            <artifactId>sentinel-transport-simple-http</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-aop</artifactId>
+            <version>${spring.boot.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+            <version>${spring.boot.version}</version>
+        </dependency>
+    </dependencies>
+</project>

sentinel/sentinel-demo/sentinel-demo-annotation-spring-aop/src/main/java/com/alibaba/csp/sentinel/demo/annotation/aop/DemoApplication.java

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+/*
+ * Copyright 1999-2018 Alibaba Group Holding Ltd.
+ *
+ * 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.
+ */
+package com.alibaba.csp.sentinel.demo.annotation.aop;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+/**
+ * @author Eric Zhao
+ */
+@SpringBootApplication
+public class DemoApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(DemoApplication.class, args);
+    }
+}

sentinel/sentinel-demo/sentinel-demo-annotation-spring-aop/src/main/java/com/alibaba/csp/sentinel/demo/annotation/aop/config/AopConfiguration.java

@@ -0,0 +1,33 @@
+/*
+ * Copyright 1999-2018 Alibaba Group Holding Ltd.
+ *
+ * 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.
+ */
+package com.alibaba.csp.sentinel.demo.annotation.aop.config;
+
+import com.alibaba.csp.sentinel.annotation.aspectj.SentinelResourceAspect;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+/**
+ * @author Eric Zhao
+ */
+@Configuration
+public class AopConfiguration {
+
+    @Bean
+    public SentinelResourceAspect sentinelResourceAspect() {
+        return new SentinelResourceAspect();
+    }
+}

sentinel/sentinel-demo/sentinel-demo-annotation-spring-aop/src/main/java/com/alibaba/csp/sentinel/demo/annotation/aop/controller/DemoController.java

@@ -0,0 +1,48 @@
+/*
+ * Copyright 1999-2018 Alibaba Group Holding Ltd.
+ *
+ * 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.
+ */
+package com.alibaba.csp.sentinel.demo.annotation.aop.controller;
+
+import com.alibaba.csp.sentinel.demo.annotation.aop.service.TestService;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+/**
+ * @author Eric Zhao
+ */
+@RestController
+public class DemoController {
+
+    @Autowired
+    private TestService service;
+
+    @GetMapping("/foo")
+    public String apiFoo(@RequestParam(required = false) Long t) throws Exception {
+        if (t == null) {
+            t = System.currentTimeMillis();
+        }
+        service.test();
+        return service.hello(t);
+    }
+
+    @GetMapping("/baz/{name}")
+    public String apiBaz(@PathVariable("name") String name) {
+        return service.helloAnother(name);
+    }
+}

sentinel/sentinel-demo/sentinel-demo-annotation-spring-aop/src/main/java/com/alibaba/csp/sentinel/demo/annotation/aop/service/ExceptionUtil.java

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+/*
+ * Copyright 1999-2018 Alibaba Group Holding Ltd.
+ *
+ * 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.
+ */
+package com.alibaba.csp.sentinel.demo.annotation.aop.service;
+
+import com.alibaba.csp.sentinel.slots.block.BlockException;
+
+/**
+ * @author Eric Zhao
+ */
+public final class ExceptionUtil {
+
+    public static void handleException(BlockException ex) {
+        // Handler method that handles BlockException when blocked.
+        // The method parameter list should match original method, with the last additional
+        // parameter with type BlockException. The return type should be same as the original method.
+        // The block handler method should be located in the same class with original method by default.
+        // If you want to use method in other classes, you can set the blockHandlerClass
+        // with corresponding Class (Note the method in other classes must be static).
+        System.out.println("Oops: " + ex.getClass().getCanonicalName());
+    }
+}

sentinel/sentinel-demo/sentinel-demo-annotation-spring-aop/src/main/java/com/alibaba/csp/sentinel/demo/annotation/aop/service/TestService.java

@@ -0,0 +1,28 @@
+/*
+ * Copyright 1999-2018 Alibaba Group Holding Ltd.
+ *
+ * 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.
+ */
+package com.alibaba.csp.sentinel.demo.annotation.aop.service;
+
+/**
+ * @author Eric Zhao
+ */
+public interface TestService {
+
+    void test();
+
+    String hello(long s);
+
+    String helloAnother(String name);
+}

sentinel/sentinel-demo/sentinel-demo-annotation-spring-aop/src/main/java/com/alibaba/csp/sentinel/demo/annotation/aop/service/TestServiceImpl.java

@@ -0,0 +1,67 @@
+/*
+ * Copyright 1999-2018 Alibaba Group Holding Ltd.
+ *
+ * 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.
+ */
+package com.alibaba.csp.sentinel.demo.annotation.aop.service;
+
+import com.alibaba.csp.sentinel.annotation.SentinelResource;
+import com.alibaba.csp.sentinel.slots.block.BlockException;
+
+import org.springframework.stereotype.Service;
+
+/**
+ * @author Eric Zhao
+ */
+@Service
+public class TestServiceImpl implements TestService {
+
+    @Override
+    @SentinelResource(value = "test", blockHandler = "handleException", blockHandlerClass = {ExceptionUtil.class})
+    public void test() {
+        System.out.println("Test");
+    }
+
+    @Override
+    @SentinelResource(value = "hello", fallback = "helloFallback")
+    public String hello(long s) {
+        if (s < 0) {
+            throw new IllegalArgumentException("invalid arg");
+        }
+        return String.format("Hello at %d", s);
+    }
+
+    @Override
+    @SentinelResource(value = "helloAnother", defaultFallback = "defaultFallback",
+        exceptionsToIgnore = {IllegalStateException.class})
+    public String helloAnother(String name) {
+        if (name == null || "bad".equals(name)) {
+            throw new IllegalArgumentException("oops");
+        }
+        if ("foo".equals(name)) {
+            throw new IllegalStateException("oops");
+        }
+        return "Hello, " + name;
+    }
+
+    public String helloFallback(long s, Throwable ex) {
+        // Do some log here.
+        ex.printStackTrace();
+        return "Oops, error occurred at " + s;
+    }
+
+    public String defaultFallback() {
+        System.out.println("Go to default fallback");
+        return "default_fallback";
+    }
+}

sentinel/sentinel-demo/sentinel-demo-annotation-spring-aop/src/main/resources/application.properties

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+spring.application.name=sentinel-annotation-aspectj-example
+server.port=19966