Update sentinel version (#490)

* Update sentinel version

* update demo
diff --git a/dubbo-samples-sentinel/case-configuration.yml b/dubbo-samples-sentinel/case-configuration.yml
index f6e2383..425e53c 100644
--- a/dubbo-samples-sentinel/case-configuration.yml
+++ b/dubbo-samples-sentinel/case-configuration.yml
@@ -14,10 +14,10 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from: app-external-zookeeper.yml
+from: app-builtin-zookeeper.yml
 
 props:
   project_name: dubbo-samples-sentinel
   main_class: org.apache.samples.sentinel.FooProviderBootstrap
-  dubbo_port: 20880
-
+  zookeeper_port: 2181
+  dubbo_port: 20880
\ No newline at end of file
diff --git a/dubbo-samples-sentinel/pom.xml b/dubbo-samples-sentinel/pom.xml
index 9bbdb40..e2f9760 100644
--- a/dubbo-samples-sentinel/pom.xml
+++ b/dubbo-samples-sentinel/pom.xml
@@ -34,7 +34,7 @@
         <dubbo.version>3.0.7</dubbo.version>
         <junit.version>4.12</junit.version>
         <spring.version>4.3.16.RELEASE</spring.version>
-        <sentinel.version>1.6.2</sentinel.version>
+        <sentinel.version>1.8.4</sentinel.version>
     </properties>
 
     <dependencyManagement>
@@ -140,6 +140,19 @@
                     <target>${target.level}</target>
                 </configuration>
             </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-shade-plugin</artifactId>
+                <version>2.4.1</version>
+                <executions>
+                    <execution>
+                        <phase>package</phase>
+                        <goals>
+                            <goal>shade</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
         </plugins>
     </build>
 </project>
diff --git a/dubbo-samples-sentinel/src/main/java/org/apache/samples/sentinel/EmbeddedZooKeeper.java b/dubbo-samples-sentinel/src/main/java/org/apache/samples/sentinel/EmbeddedZooKeeper.java
new file mode 100644
index 0000000..f77efee
--- /dev/null
+++ b/dubbo-samples-sentinel/src/main/java/org/apache/samples/sentinel/EmbeddedZooKeeper.java
@@ -0,0 +1,255 @@
+/*
+ * Copyright 2014 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
+ *
+ * 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.samples.sentinel;
+
+import org.apache.zookeeper.server.ServerConfig;
+import org.apache.zookeeper.server.ZooKeeperServerMain;
+import org.apache.zookeeper.server.quorum.QuorumPeerConfig;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.context.SmartLifecycle;
+import org.springframework.util.ErrorHandler;
+import org.springframework.util.SocketUtils;
+
+import java.io.File;
+import java.lang.reflect.Method;
+import java.util.Properties;
+import java.util.UUID;
+
+/**
+ * from: https://github.com/spring-projects/spring-xd/blob/v1.3.1.RELEASE/spring-xd-dirt/src/main/java/org/springframework/xd/dirt/zookeeper/ZooKeeperUtils.java
+ *
+ * Helper class to start an embedded instance of standalone (non clustered) ZooKeeper.
+ *
+ * NOTE: at least an external standalone server (if not an ensemble) are recommended, even for
+ * {@link org.springframework.xd.dirt.server.singlenode.SingleNodeApplication}
+ *
+ * @author Patrick Peralta
+ * @author Mark Fisher
+ * @author David Turanski
+ */
+public class EmbeddedZooKeeper implements SmartLifecycle {
+
+    /**
+     * Logger.
+     */
+    private static final Logger logger = LoggerFactory.getLogger(EmbeddedZooKeeper.class);
+
+    /**
+     * ZooKeeper client port. This will be determined dynamically upon startup.
+     */
+    private final int clientPort;
+
+    /**
+     * Whether to auto-start. Default is true.
+     */
+    private boolean autoStartup = true;
+
+    /**
+     * Lifecycle phase. Default is 0.
+     */
+    private int phase = 0;
+
+    /**
+     * Thread for running the ZooKeeper server.
+     */
+    private volatile Thread zkServerThread;
+
+    /**
+     * ZooKeeper server.
+     */
+    private volatile ZooKeeperServerMain zkServer;
+
+    /**
+     * {@link ErrorHandler} to be invoked if an Exception is thrown from the ZooKeeper server thread.
+     */
+    private ErrorHandler errorHandler;
+
+    private boolean daemon = true;
+
+    /**
+     * Construct an EmbeddedZooKeeper with a random port.
+     */
+    public EmbeddedZooKeeper() {
+        clientPort = SocketUtils.findAvailableTcpPort();
+    }
+
+    /**
+     * Construct an EmbeddedZooKeeper with the provided port.
+     *
+     * @param clientPort  port for ZooKeeper server to bind to
+     */
+    public EmbeddedZooKeeper(int clientPort, boolean daemon) {
+        this.clientPort = clientPort;
+        this.daemon = daemon;
+    }
+
+    /**
+     * Returns the port that clients should use to connect to this embedded server.
+     *
+     * @return dynamically determined client port
+     */
+    public int getClientPort() {
+        return this.clientPort;
+    }
+
+    /**
+     * Specify whether to start automatically. Default is true.
+     *
+     * @param autoStartup whether to start automatically
+     */
+    public void setAutoStartup(boolean autoStartup) {
+        this.autoStartup = autoStartup;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public boolean isAutoStartup() {
+        return this.autoStartup;
+    }
+
+    /**
+     * Specify the lifecycle phase for the embedded server.
+     *
+     * @param phase the lifecycle phase
+     */
+    public void setPhase(int phase) {
+        this.phase = phase;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public int getPhase() {
+        return this.phase;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public boolean isRunning() {
+        return (zkServerThread != null);
+    }
+
+    /**
+     * Start the ZooKeeper server in a background thread.
+     * <p>
+     * Register an error handler via {@link #setErrorHandler} in order to handle
+     * any exceptions thrown during startup or execution.
+     */
+    @Override
+    public synchronized void start() {
+        if (zkServerThread == null) {
+            zkServerThread = new Thread(new ServerRunnable(), "ZooKeeper Server Starter");
+            zkServerThread.setDaemon(daemon);
+            zkServerThread.start();
+        }
+    }
+
+    /**
+     * Shutdown the ZooKeeper server.
+     */
+    @Override
+    public synchronized void stop() {
+        if (zkServerThread != null) {
+            // The shutdown method is protected...thus this hack to invoke it.
+            // This will log an exception on shutdown; see
+            // https://issues.apache.org/jira/browse/ZOOKEEPER-1873 for details.
+            try {
+                Method shutdown = ZooKeeperServerMain.class.getDeclaredMethod("shutdown");
+                shutdown.setAccessible(true);
+                shutdown.invoke(zkServer);
+            }
+
+            catch (Exception e) {
+                throw new RuntimeException(e);
+            }
+
+            // It is expected that the thread will exit after
+            // the server is shutdown; this will block until
+            // the shutdown is complete.
+            try {
+                zkServerThread.join(5000);
+                zkServerThread = null;
+            }
+            catch (InterruptedException e) {
+                Thread.currentThread().interrupt();
+                logger.warn("Interrupted while waiting for embedded ZooKeeper to exit");
+                // abandoning zk thread
+                zkServerThread = null;
+            }
+        }
+    }
+
+    /**
+     * Stop the server if running and invoke the callback when complete.
+     */
+    @Override
+    public void stop(Runnable callback) {
+        stop();
+        callback.run();
+    }
+
+    /**
+     * Provide an {@link ErrorHandler} to be invoked if an Exception is thrown from the ZooKeeper server thread. If none
+     * is provided, only error-level logging will occur.
+     *
+     * @param errorHandler the {@link ErrorHandler} to be invoked
+     */
+    public void setErrorHandler(ErrorHandler errorHandler) {
+        this.errorHandler = errorHandler;
+    }
+
+    /**
+     * Runnable implementation that starts the ZooKeeper server.
+     */
+    private class ServerRunnable implements Runnable {
+
+        @Override
+        public void run() {
+            try {
+                Properties properties = new Properties();
+                File file = new File(System.getProperty("java.io.tmpdir")
+                    + File.separator + UUID.randomUUID());
+                file.deleteOnExit();
+                properties.setProperty("dataDir", file.getAbsolutePath());
+                properties.setProperty("clientPort", String.valueOf(clientPort));
+
+                QuorumPeerConfig quorumPeerConfig = new QuorumPeerConfig();
+                quorumPeerConfig.parseProperties(properties);
+
+                zkServer = new ZooKeeperServerMain();
+                ServerConfig configuration = new ServerConfig();
+                configuration.readFrom(quorumPeerConfig);
+
+                zkServer.runFromConfig(configuration);
+            }
+            catch (Exception e) {
+                if (errorHandler != null) {
+                    errorHandler.handleError(e);
+                }
+                else {
+                    logger.error("Exception running embedded ZooKeeper", e);
+                }
+            }
+        }
+    }
+
+}
\ No newline at end of file
diff --git a/dubbo-samples-sentinel/src/main/java/org/apache/samples/sentinel/FooConsumerBootstrap.java b/dubbo-samples-sentinel/src/main/java/org/apache/samples/sentinel/FooConsumerBootstrap.java
index c91464d..6fe5ce0 100644
--- a/dubbo-samples-sentinel/src/main/java/org/apache/samples/sentinel/FooConsumerBootstrap.java
+++ b/dubbo-samples-sentinel/src/main/java/org/apache/samples/sentinel/FooConsumerBootstrap.java
@@ -43,10 +43,13 @@
             try {
                 String message = service.sayHello("dubbo");
                 System.out.println("Success: " + message);
-            } catch (SentinelRpcException ex) {
-                System.out.println("Blocked");
-            } catch (Exception ex) {
-                ex.printStackTrace();
+            } catch (RuntimeException ex) {
+                if (ex.getMessage().contains("SentinelBlockException: FlowException")) {
+                    System.out.println("Blocked");
+                }
+                else {
+                    ex.printStackTrace();
+                }
             }
         }
     }
diff --git a/dubbo-samples-sentinel/src/main/java/org/apache/samples/sentinel/FooProviderBootstrap.java b/dubbo-samples-sentinel/src/main/java/org/apache/samples/sentinel/FooProviderBootstrap.java
index 68b8a66..3cd1a56 100644
--- a/dubbo-samples-sentinel/src/main/java/org/apache/samples/sentinel/FooProviderBootstrap.java
+++ b/dubbo-samples-sentinel/src/main/java/org/apache/samples/sentinel/FooProviderBootstrap.java
@@ -40,6 +40,7 @@
     private static final String RES_KEY = INTERFACE_RES_KEY + ":sayHello(java.lang.String)";
 
     public static void main(String[] args) throws InterruptedException {
+        new EmbeddedZooKeeper(2181, false).start();
         // Users don't need to manually call this method.
         // Only for eager initialization.
         InitExecutor.doInit();
@@ -55,7 +56,7 @@
     }
 
     private static void initFlowRule() {
-        FlowRule flowRule = new FlowRule(INTERFACE_RES_KEY)
+        FlowRule flowRule = new FlowRule(FooService.class.getName())
                 .setCount(10)
                 .setGrade(RuleConstant.FLOW_GRADE_QPS);
         FlowRuleManager.loadRules(Collections.singletonList(flowRule));
diff --git a/dubbo-samples-sentinel/src/main/java/org/apache/samples/sentinel/provider/ProviderConfiguration.java b/dubbo-samples-sentinel/src/main/java/org/apache/samples/sentinel/provider/ProviderConfiguration.java
index 553c88a..cf34349 100644
--- a/dubbo-samples-sentinel/src/main/java/org/apache/samples/sentinel/provider/ProviderConfiguration.java
+++ b/dubbo-samples-sentinel/src/main/java/org/apache/samples/sentinel/provider/ProviderConfiguration.java
@@ -29,7 +29,7 @@
 @Configuration
 @EnableDubbo
 public class ProviderConfiguration {
-    @Value("zookeeper://${zookeeper.address:127.0.0.1}:2181")
+    @Value("zookeeper://${zookeeper.address:127.0.0.1}:${zookeeper.port:2181}")
     private String zookeeperAddress;
 
     @Value("${dubbo.port:20880}")
diff --git a/dubbo-samples-sentinel/src/test/java/org/apache/samples/sentinel/FooServiceIT.java b/dubbo-samples-sentinel/src/test/java/org/apache/samples/sentinel/FooServiceIT.java
index 11d19af..dcab781 100644
--- a/dubbo-samples-sentinel/src/test/java/org/apache/samples/sentinel/FooServiceIT.java
+++ b/dubbo-samples-sentinel/src/test/java/org/apache/samples/sentinel/FooServiceIT.java
@@ -17,11 +17,9 @@
 
 package org.apache.samples.sentinel;
 
-import com.alibaba.csp.sentinel.slots.block.flow.FlowException;
-import org.apache.dubbo.rpc.RpcException;
-
 import org.apache.samples.sentinel.consumer.ConsumerConfiguration;
 import org.apache.samples.sentinel.consumer.FooServiceConsumer;
+import org.junit.Assert;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -43,17 +41,13 @@
         }
     }
 
-    @Test(expected = com.alibaba.csp.sentinel.slots.block.flow.FlowException.class)
-    public void testFlowControl2() throws Throwable {
+    @Test
+    public void testFlowControl2() {
         for (int i = 0; i < 11; i++) {
             try {
                 consumer.sayHello("dubbo");
             } catch (Throwable e) {
-                if (e.getMessage().contains("com.alibaba.csp.sentinel.slots.block.flow.FlowException")) {
-                    throw new FlowException(e.getMessage());
-                }
-                e.printStackTrace();
-                throw e.getCause();
+                Assert.assertTrue(e.getMessage().contains("SentinelBlockException: FlowException"));
             }
         }
     }