improved sql parser

2023-03-04 19:17:16 +00:00 · 2016-05-19 01:06:49 +08:00
parent 186cfb6a80
commit 352a7ca08b
10 changed files with 360 additions and 16 deletions
@@ -0,0 +1,87 @@
+package com.alibaba.druid.pool.postgres;
+
+import java.sql.Connection;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.sql.Statement;
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+
+import org.junit.Assert;
+
+import com.alibaba.druid.pool.DruidDataSource;
+import com.alibaba.druid.pool.vendor.PGValidConnectionChecker;
+import com.alibaba.druid.util.JdbcUtils;
+
+import junit.framework.TestCase;
+
+/**
+ * 这个场景测试minIdle > maxActive
+ * 
+ * @author wenshao [szujobs@hotmail.com]
+ */
+public class PG_500_connection_Test extends TestCase {
+
+    private DruidDataSource dataSource;
+
+    protected void setUp() throws Exception {
+        dataSource = new DruidDataSource();
+        dataSource.setUrl("jdbc:postgresql://192.168.199.231:5432/druid_test_db");
+        dataSource.setUsername("druid_test");
+        dataSource.setPassword("druid_test");
+        dataSource.setInitialSize(50);
+        dataSource.setMaxActive(80);
+        dataSource.setMinIdle(50);
+        dataSource.setMinEvictableIdleTimeMillis(300 * 1000); // 300 / 10
+        dataSource.setTimeBetweenEvictionRunsMillis(180 * 1000); // 180 / 10
+        dataSource.setTestWhileIdle(false);
+        dataSource.setTestOnBorrow(false);
+        // dataSource.setValidationQuery("SELECT 1 FROM DUAL");
+        dataSource.setFilters("stat");
+    }
+
+    protected void tearDown() throws Exception {
+        dataSource.close();
+    }
+
+    public void test_conect_500() throws Exception {
+        dataSource.init();
+        Assert.assertFalse(dataSource.isOracle());
+        Assert.assertTrue(dataSource.getValidConnectionChecker() instanceof PGValidConnectionChecker);
+
+        int taskCount = 1000 * 100;
+        final CountDownLatch endLatch = new CountDownLatch(taskCount);
+        Runnable task = new Runnable() {
+
+            @Override
+            public void run() {
+                Connection conn = null;
+                Statement stmt = null;
+                ResultSet rs = null;
+                try {
+                    conn = dataSource.getConnection();
+                    stmt = conn.createStatement();
+                    rs = stmt.executeQuery("SELECT 1");
+                    while (rs.next()) {
+
+                    }
+                } catch (SQLException ex) {
+                    // skip
+                } finally {
+                    endLatch.countDown();
+                }
+                JdbcUtils.close(rs);
+                JdbcUtils.close(stmt);
+                JdbcUtils.close(conn);
+            }
+        };
+        
+        ExecutorService executor = Executors.newFixedThreadPool(100);
+        for (int i = 0; i < taskCount; ++i) {
+            executor.submit(task);
+        }
+        endLatch.await();
+
+    }
+}