init

sentinel/sentinel-demo/sentinel-demo-okhttp/pom.xml

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+<?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-okhttp</artifactId>
+
+    <properties>
+        <spring.boot.version>2.1.3.RELEASE</spring.boot.version>
+        <okhttp.version>3.6.0</okhttp.version>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>com.alibaba.csp</groupId>
+            <artifactId>sentinel-okhttp-adapter</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+            <version>${spring.boot.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <version>${spring.boot.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.squareup.okhttp3</groupId>
+            <artifactId>okhttp</artifactId>
+            <version>${okhttp.version}</version>
+        </dependency>
+
+        <!-- Add this so that we could display the resources via /tree command -->
+        <dependency>
+            <groupId>com.alibaba.csp</groupId>
+            <artifactId>sentinel-transport-simple-http</artifactId>
+        </dependency>
+    </dependencies>
+</project>

sentinel/sentinel-demo/sentinel-demo-okhttp/src/main/java/com/alibaba/csp/sentinel/demo/okhttp/OkHttpDemoApplication.java

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+/*
+ * Copyright 1999-2020 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.okhttp;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+/**
+ * @author zhaoyuguang
+ */
+@SpringBootApplication
+public class OkHttpDemoApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(OkHttpDemoApplication.class);
+    }
+}

sentinel/sentinel-demo/sentinel-demo-okhttp/src/main/java/com/alibaba/csp/sentinel/demo/okhttp/controller/OkHttpTestController.java

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+/*
+ * Copyright 1999-2020 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.okhttp.controller;
+
+import com.alibaba.csp.sentinel.adapter.okhttp.SentinelOkHttpConfig;
+import com.alibaba.csp.sentinel.adapter.okhttp.SentinelOkHttpInterceptor;
+import com.alibaba.csp.sentinel.adapter.okhttp.fallback.DefaultOkHttpFallback;
+
+import okhttp3.OkHttpClient;
+import okhttp3.Request;
+import okhttp3.Response;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.io.IOException;
+
+/**
+ * @author zhaoyuguang
+ */
+@RestController
+public class OkHttpTestController {
+
+    @Value("${server.port}")
+    private Integer port;
+
+    private final OkHttpClient client = new OkHttpClient.Builder()
+        .addInterceptor(new SentinelOkHttpInterceptor(new SentinelOkHttpConfig((request, connection) -> {
+            String regex = "/okhttp/back/";
+            String url = request.url().toString();
+            if (url.contains(regex)) {
+                url = url.substring(0, url.indexOf(regex) + regex.length()) + "{id}";
+            }
+            return request.method() + ":" + url;
+        }, new DefaultOkHttpFallback())))
+        .build();
+
+    @RequestMapping("/okhttp/back")
+    public String back() {
+        return "Welcome Back!";
+    }
+
+    @RequestMapping("/okhttp/back/{id}")
+    public String back(@PathVariable String id) {
+        return "Welcome Back! " + id;
+    }
+
+    @RequestMapping("/okhttp/testcase/{id}")
+    public String testcase(@PathVariable String id) throws Exception {
+        return getRemoteString(id);
+    }
+
+    @RequestMapping("/okhttp/testcase")
+    public String testcase() throws Exception {
+        return getRemoteString(null);
+    }
+
+    private String getRemoteString(String id) throws IOException {
+        Request request = new Request.Builder()
+            .url("http://localhost:" + port + "/okhttp/back" + (id == null ? "" : "/" + id))
+            .build();
+        Response response = client.newCall(request).execute();
+        return response.body().string();
+    }
+}

sentinel/sentinel-demo/sentinel-demo-okhttp/src/main/resources/application.properties

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+spring.application.name=sentinel-demo-okhttp
+server.port=8085