[TD-4939]<test>: add a Proxool Connection Pool Demo (#6657)
* [TD-4939]<test>: add a Proxool Connection Pool Demo * change
This commit is contained in:
Zhiyu Yang
GitHub
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@ -9,12 +9,12 @@
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<version>1.0-SNAPSHOT</version>
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<dependencies>
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<!-- taos -->
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<dependency>
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<groupId>com.taosdata.jdbc</groupId>
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<artifactId>taos-jdbcdriver</artifactId>
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<version>2.0.18</version>
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</dependency>
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<!-- druid -->
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<dependency>
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<groupId>com.alibaba</groupId>
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@ -50,6 +50,12 @@
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<artifactId>log4j</artifactId>
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<version>1.2.17</version>
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</dependency>
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<!-- proxool -->
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<dependency>
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<groupId>com.cloudhopper.proxool</groupId>
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<artifactId>proxool</artifactId>
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<version>0.9.1</version>
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</dependency>
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</dependencies>
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<build>
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@ -57,25 +63,46 @@
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-assembly-plugin</artifactId>
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<version>3.1.0</version>
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<configuration>
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<archive>
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<manifest>
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<mainClass>com.taosdata.example.ConnectionPoolDemo</mainClass>
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</manifest>
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</archive>
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<descriptorRefs>
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<descriptorRef>jar-with-dependencies</descriptorRef>
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</descriptorRefs>
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</configuration>
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<version>3.3.0</version>
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<executions>
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<execution>
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<id>make-assembly</id>
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<id>ConnectionPoolDemo</id>
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<configuration>
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<finalName>ConnectionPoolDemo</finalName>
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<archive>
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<manifest>
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<mainClass>com.taosdata.example.ConnectionPoolDemo</mainClass>
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</manifest>
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</archive>
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<descriptorRefs>
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<descriptorRef>jar-with-dependencies</descriptorRef>
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</descriptorRefs>
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</configuration>
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<phase>package</phase>
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<goals>
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<goal>single</goal>
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</goals>
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</execution>
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<execution>
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<id>ProxoolDemo</id>
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<configuration>
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<finalName>ProxoolDemo</finalName>
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<archive>
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<manifest>
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<mainClass>com.taosdata.example.ProxoolDemo</mainClass>
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</manifest>
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</archive>
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<descriptorRefs>
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<descriptorRef>jar-with-dependencies</descriptorRef>
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</descriptorRefs>
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</configuration>
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<phase>package</phase>
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<goals>
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<goal>single</goal>
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</goals>
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</execution>
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</executions>
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</plugin>
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</plugins>
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@ -0,0 +1,56 @@
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package com.taosdata.example;
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import org.logicalcobwebs.proxool.ProxoolException;
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import org.logicalcobwebs.proxool.configuration.JAXPConfigurator;
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import java.sql.*;
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public class ProxoolDemo {
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public static void main(String[] args) {
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String xml = parseConfigurationXml(args);
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if (xml == null) {
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printHelp();
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System.exit(0);
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}
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try {
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JAXPConfigurator.configure(xml, false);
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Class.forName("org.logicalcobwebs.proxool.ProxoolDriver");
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Connection connection = DriverManager.getConnection("proxool.ds");
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Statement stmt = connection.createStatement();
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ResultSet rs = stmt.executeQuery("show databases");
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ResultSetMetaData metaData = rs.getMetaData();
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while (rs.next()) {
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for (int i = 1; i <= metaData.getColumnCount(); i++) {
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System.out.print(metaData.getColumnLabel(i) + ": " + rs.getString(i));
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}
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System.out.println();
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}
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stmt.close();
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} catch (ClassNotFoundException | SQLException | ProxoolException e) {
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e.printStackTrace();
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}
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}
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private static String parseConfigurationXml(String[] args) {
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String host = null;
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for (int i = 0; i < args.length; i++) {
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if ("--xml".equalsIgnoreCase(args[i]) && i < args.length - 1) {
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host = args[++i];
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}
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}
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return host;
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}
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private static void printHelp() {
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System.out.println("Usage: java -jar ProxoolDemo.jar --xml [xml]");
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}
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}
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@ -0,0 +1,27 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<something-else-entirely>
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<proxool>
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<alias>ds</alias>
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<!--数据源的别名-->
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<driver-url>jdbc:TAOS-RS://127.0.0.1:6041/log</driver-url>
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<!--url连接串-->
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<driver-class>com.taosdata.jdbc.rs.RestfulDriver</driver-class>
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<!--驱动类-->
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<driver-properties>
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<property name="user" value="root"/>
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<property name="password" value="taosdata"/>
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</driver-properties>
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<!--最大连接数(默认5个),超过了这个连接数,再有请求时,就排在队列中等候,最大的等待请求数由maximum-new-connections决定 -->
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<maximum-connection-count>100</maximum-connection-count>
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<!-- 定义连接池中的最大连接数 -->
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<maximum-active-time>100</maximum-active-time>
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<!--最少保持的空闲连接数(默认2个)-->
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<prototype-count>1</prototype-count>
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<!--最小连接数(默认2个)-->
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<minimum-connection-count>5</minimum-connection-count>
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<!--proxool自动侦察各个连接状态的时间间隔(毫秒),侦察到空闲的连接就马上回收,超时的销毁 默认30秒-->
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<house-keeping-sleep-time>30000</house-keeping-sleep-time>
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<!--用于保持连接的测试语句 -->
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<house-keeping-test-sql>select server_status()</house-keeping-test-sql>
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</proxool>
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</something-else-entirely>
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