Add unit tests for cluster concurrent limiting checker

Signed-off-by: yunfeiyanggzq <yunfeiyang@buaa.edu.cn>

sentinel-cluster/sentinel-cluster-server-default/src/test/java/com/alibaba/csp/sentinel/cluster/flow/ConcurrentClusterFlowCheckerTest.java

@@ -0,0 +1,125 @@
+/*
+ * 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.cluster.flow;
+
+import com.alibaba.csp.sentinel.cluster.TokenResult;
+import com.alibaba.csp.sentinel.cluster.TokenResultStatus;
+import com.alibaba.csp.sentinel.cluster.flow.rule.ClusterFlowRuleManager;
+import com.alibaba.csp.sentinel.cluster.flow.statistic.concurrent.CurrentConcurrencyManager;
+import com.alibaba.csp.sentinel.cluster.flow.statistic.concurrent.TokenCacheNodeManager;
+import com.alibaba.csp.sentinel.cluster.server.connection.ConnectionManager;
+import com.alibaba.csp.sentinel.slots.block.ClusterRuleConstant;
+import com.alibaba.csp.sentinel.slots.block.RuleConstant;
+import com.alibaba.csp.sentinel.slots.block.flow.ClusterFlowConfig;
+import com.alibaba.csp.sentinel.slots.block.flow.FlowRule;
+import com.alibaba.csp.sentinel.test.AbstractTimeBasedTest;
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+
+import java.util.ArrayList;
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+
+/**
+ * @author yunfeiyanggzq
+ */
+public class ConcurrentClusterFlowCheckerTest extends AbstractTimeBasedTest {
+    @Before
+    public void setUp() {
+        FlowRule rule = new FlowRule();
+        ClusterFlowConfig config = new ClusterFlowConfig();
+        config.setResourceTimeout(500);
+        config.setClientOfflineTime(1000);
+        config.setFlowId(111L);
+        config.setThresholdType(ClusterRuleConstant.FLOW_THRESHOLD_GLOBAL);
+        rule.setClusterConfig(config);
+        rule.setClusterMode(true);
+        rule.setCount(10);
+        rule.setResource("test");
+        rule.setGrade(RuleConstant.FLOW_GRADE_THREAD);
+        ArrayList<FlowRule> rules = new ArrayList<>();
+        rules.add(rule);
+        ClusterFlowRuleManager.registerPropertyIfAbsent("1-name");
+        ClusterFlowRuleManager.loadRules("1-name", rules);
+    }
+
+    @Test
+    public void testEasyAcquireAndRelease() throws InterruptedException {
+        setCurrentMillis(System.currentTimeMillis());
+        FlowRule rule = ClusterFlowRuleManager.getFlowRuleById(111L);
+        ArrayList<Long> list = new ArrayList<>();
+        for (int i = 0; i < 10; i++) {
+            TokenResult result = ConcurrentClusterFlowChecker.acquireConcurrentToken("127.0.0.1", rule, 1);
+            Assert.assertTrue("fail to acquire token",
+                    result.getStatus() == TokenResultStatus.OK && result.getTokenId() != 0);
+            list.add(result.getTokenId());
+        }
+        for (int i = 0; i < 10; i++) {
+            TokenResult result = ConcurrentClusterFlowChecker.acquireConcurrentToken("127.0.0.1", rule, 1);
+            Assert.assertTrue("fail to acquire block token",
+                    result.getStatus() == TokenResultStatus.BLOCKED);
+        }
+        for (int i = 0; i < 10; i++) {
+            TokenResult result = ConcurrentClusterFlowChecker.releaseConcurrentToken(list.get(i));
+            Assert.assertTrue("fail to release token",
+                    result.getStatus() == TokenResultStatus.RELEASE_OK);
+        }
+        Assert.assertTrue("fail to release token",
+                CurrentConcurrencyManager.get(111L).get() == 0 && TokenCacheNodeManager.getSize() == 0);
+    }
+
+    @Test
+    public void testConcurrentAcquireAndRelease() throws InterruptedException {
+        setCurrentMillis(System.currentTimeMillis());
+        final FlowRule rule = ClusterFlowRuleManager.getFlowRuleById(111L);
+        final CountDownLatch countDownLatch = new CountDownLatch(1000);
+        ExecutorService pool = Executors.newFixedThreadPool(100);
+
+        for (long i = 0; i < 1000; i++) {
+            Runnable task = new Runnable() {
+                @Override
+                public void run() {
+                    assert rule != null;
+                    TokenResult result = ConcurrentClusterFlowChecker.acquireConcurrentToken("127.0.0.1", rule, 1);
+                    Assert.assertTrue("concurrent control fail", CurrentConcurrencyManager.get(111L).get() <= rule.getCount());
+                    if (result.getStatus() == TokenResultStatus.OK) {
+                        ConcurrentClusterFlowChecker.releaseConcurrentToken(result.getTokenId());
+                    }
+                    countDownLatch.countDown();
+                }
+            };
+            pool.execute(task);
+        }
+        countDownLatch.await();
+        pool.shutdown();
+        assert rule != null;
+        Assert.assertTrue("fail to acquire and release token",
+                CurrentConcurrencyManager.get(rule.getClusterConfig().getFlowId()).get() == 0 && TokenCacheNodeManager.getSize() == 0);
+    }
+
+    @Test
+    public void testReleaseExpiredToken() throws InterruptedException {
+        ConnectionManager.addConnection("test", "127.0.0.1");
+        FlowRule rule = ClusterFlowRuleManager.getFlowRuleById(111L);
+        for (int i = 0; i < 10; i++) {
+            ConcurrentClusterFlowChecker.acquireConcurrentToken("127.0.0.1", rule, 1);
+        }
+        Thread.sleep(3000);
+        Assert.assertTrue("fail to acquire and release token", CurrentConcurrencyManager.get(rule.getClusterConfig().getFlowId()).get() == 0 && TokenCacheNodeManager.getSize() == 0);
+    }
+}

sentinel-cluster/sentinel-cluster-server-default/src/test/java/com/alibaba/csp/sentinel/cluster/flow/statistic/concurrent/CurrentConcurrencyManagerTest.java

@@ -0,0 +1,49 @@
+/*
+ * 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.cluster.flow.statistic.concurrent;
+
+import com.alibaba.csp.sentinel.cluster.flow.statistic.concurrent.CurrentConcurrencyManager;
+import org.junit.Assert;
+import org.junit.Test;
+
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+
+public class CurrentConcurrencyManagerTest {
+    @Test
+    public void updateTest() throws InterruptedException {
+        CurrentConcurrencyManager.put(111L, 0);
+        CurrentConcurrencyManager.put(222L, 0);
+        final CountDownLatch countDownLatch = new CountDownLatch(1000);
+        ExecutorService pool = Executors.newFixedThreadPool(100);
+        for (int i = 0; i < 1000; i++) {
+            Runnable task = new Runnable() {
+                @Override
+                public void run() {
+                    CurrentConcurrencyManager.addConcurrency(111L, 1);
+                    CurrentConcurrencyManager.addConcurrency(222L, 2);
+                    countDownLatch.countDown();
+                }
+            };
+            pool.execute(task);
+        }
+        countDownLatch.await();
+        pool.shutdown();
+        Assert.assertEquals(1000, CurrentConcurrencyManager.get(111L).get());
+        Assert.assertEquals(2000, CurrentConcurrencyManager.get(222L).get());
+    }
+}

sentinel-cluster/sentinel-cluster-server-default/src/test/java/com/alibaba/csp/sentinel/cluster/flow/statistic/concurrent/TokenCacheNodeManagerTest.java

@@ -0,0 +1,79 @@
+/*
+ * 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.cluster.flow.statistic.concurrent;
+
+import com.alibaba.csp.sentinel.cluster.flow.rule.ClusterFlowRuleManager;
+import com.alibaba.csp.sentinel.cluster.flow.statistic.concurrent.TokenCacheNode;
+import com.alibaba.csp.sentinel.cluster.flow.statistic.concurrent.TokenCacheNodeManager;
+import com.alibaba.csp.sentinel.slots.block.ClusterRuleConstant;
+import com.alibaba.csp.sentinel.slots.block.RuleConstant;
+import com.alibaba.csp.sentinel.slots.block.flow.ClusterFlowConfig;
+import com.alibaba.csp.sentinel.slots.block.flow.FlowRule;
+import com.alibaba.csp.sentinel.test.AbstractTimeBasedTest;
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class TokenCacheNodeManagerTest extends AbstractTimeBasedTest {
+    @Before
+    public void setUp() {
+        FlowRule rule = new FlowRule();
+        ClusterFlowConfig config = new ClusterFlowConfig();
+        config.setResourceTimeout(500);
+        config.setClientOfflineTime(1000);
+        config.setFlowId(111L);
+        config.setThresholdType(ClusterRuleConstant.FLOW_THRESHOLD_GLOBAL);
+        rule.setClusterConfig(config);
+        rule.setClusterMode(true);
+        rule.setCount(10);
+        rule.setResource("test");
+        rule.setGrade(RuleConstant.FLOW_GRADE_THREAD);
+        ArrayList<FlowRule> rules = new ArrayList<>();
+        rules.add(rule);
+        ClusterFlowRuleManager.registerPropertyIfAbsent("1-name");
+        ClusterFlowRuleManager.loadRules("1-name", rules);
+    }
+
+    @Test
+    public void testPutTokenCacheNode() throws InterruptedException {
+        setCurrentMillis(System.currentTimeMillis());
+
+        for (long i = 0; i < 100; i++) {
+            final TokenCacheNode node = new TokenCacheNode();
+            node.setTokenId(i);
+            node.setFlowId(111L);
+            node.setResourceTimeout(10000L);
+            node.setClientTimeout(10000L);
+            node.setClientAddress("localhost");
+            if (TokenCacheNodeManager.validToken(node)) {
+                TokenCacheNodeManager.putTokenCacheNode(node.getTokenId(), node);
+
+            }
+        }
+        Assert.assertEquals(100, TokenCacheNodeManager.getSize());
+        for (int i = 0; i < 100; i++) {
+            TokenCacheNodeManager.getTokenCacheNode((long) (Math.random() * 100));
+        }
+        List<Long> keyList = new ArrayList<>(TokenCacheNodeManager.getCacheKeySet());
+        for (int i = 0; i < 100; i++) {
+            Assert.assertEquals(i, (long) keyList.get(i));
+            TokenCacheNodeManager.removeTokenCacheNode(i);
+        }
+    }
+}

sentinel-cluster/sentinel-cluster-server-default/src/test/java/com/alibaba/csp/sentinel/test/AbstractTimeBasedTest.java

@@ -0,0 +1,57 @@
+/*
+ * 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.test;
+
+import com.alibaba.csp.sentinel.util.TimeUtil;
+import org.junit.runner.RunWith;
+import org.powermock.api.mockito.PowerMockito;
+import org.powermock.core.classloader.annotations.PrepareForTest;
+import org.powermock.modules.junit4.PowerMockRunner;
+
+/**
+ * Mock support for {@link TimeUtil}
+ *
+ * @author jason
+ */
+@RunWith(PowerMockRunner.class)
+@PrepareForTest({TimeUtil.class})
+public abstract class AbstractTimeBasedTest {
+
+    private long currentMillis = 0;
+
+    {
+        PowerMockito.mockStatic(TimeUtil.class);
+        PowerMockito.when(TimeUtil.currentTimeMillis()).thenReturn(currentMillis);
+    }
+
+    protected final void useActualTime() {
+        PowerMockito.when(TimeUtil.currentTimeMillis()).thenCallRealMethod();
+    }
+
+    protected final void setCurrentMillis(long cur) {
+        currentMillis = cur;
+        PowerMockito.when(TimeUtil.currentTimeMillis()).thenReturn(currentMillis);
+    }
+
+    protected final void sleep(int t) {
+        currentMillis += t;
+        PowerMockito.when(TimeUtil.currentTimeMillis()).thenReturn(currentMillis);
+    }
+
+    protected final void sleepSecond(int timeSec) {
+        sleep(timeSec * 1000);
+    }
+}