分布式配置管理平台(Distributed Configuration Management Platform)
在线Demo: 用户名/密码(admin/admin123).
轻量级: 没有复杂的技术和第三方依赖;
可靠存储: 使用Redis作为存储,建议使用Redis Cluster,Redis Master-Slave 或者 Redis Proxy Middleware等技术保证存储的可靠性;
对等的Server节点: Server节点的对等性,保证即便某些Server不可用,集群仍能工作;
近似实时更新: diablo使用Http长轮询来保证客户端能及时得到配置更新的通知;
简单的UI: diablo内嵌了一个简单易用的web界面,叫做Diablo Tower;
…
下载最新的压缩包;
或者通过源码构建:
mvn clean package -DskipTests
# package located diablo-server/target/diablo-server-{version}.tar.gz
解压缩包:
tar zxf diablo-server.tar.gz
ll diabloh
bin # the execute scripts
conf # conf dir
lib # dependency libs
编辑配置文件diablo.conf:
# vim ${DIABLO_HOME}/conf/diablo.conf
# The server bind address
BIND_ADDR=127.0.0.1
# The server listening port
LISTEN_PORT=2143
# The redis host
REDIS_HOST=127.0.0.1
# The redis port
REDIS_PORT=6379
# The log path
LOG_PATH=~/logs/diablo
# The password for Diablo Tower admin
TOWER_PASS=admin
# The inverval(seconds) for checking server's status
CHECK_SERVER_INTERVAL=5
# Enable or disable client api auth
# client must config the appKey, if CLIENT_AUTH=true
CLIENT_AUTH=true
# Java Heap options
JAVA_HEAP_OPTS="-Xms512m -Xmx512m"
启动或停止diablo server:
${DIABLO_HOME}/bin/diablo.sh start
${DIABLO_HOME}/bin/diablo.sh stop
${DIABLO_HOME}/bin/diablo.sh restart
启动diablo server后,便可通过Http访问diablo tower(如http://127.0.0.1:2143);
事先准备应用和配置项:
编辑应用:
编辑配置项:
以下针对Java客户端,其他客户端可参考该规范。
SimpleDiabloClient(编程模式):
添加maven依赖:
<dependency>
<groupId>me.hao0</groupId>
<artifactId>diablo-client</artifactId>
<version>1.2.3</version>
</dependency>
代码样例:
SimpleDiabloClient client = new SimpleDiabloClient();
client.setAppName("myapp");
client.setAppKey("123456");
client.setServers("127.0.0.1:2143,127.0.0.1:2144");
// 可添加配置监听
client.addListener(new ConfigListener<String>() {
@Override
public String name() {
// 配置项名称
return "test_config1";
}
@Override
public void onUpdate(String newValue) {
// 该方法会在本地配置更新后触发
System.out.println("test_config1 has updated to " + newValue);
}
});
client.start();
// 获取配置项最新的值
String testConfig = client.get("test_config");
// 获取配置项最新的json对象
MyClass myClass = client.get("test_json", MyClass.class);
client.shutdown();
具体见测试用例.
SpringDiabloClient(Spring注入模式):
添加maven依赖:
<dependency>
<groupId>me.hao0</groupId>
<artifactId>diablo-client-spring</artifactId>
<version>1.2.2</version>
</dependency>
配置片段:
<bean class="me.hao0.diablo.client.SpringDiabloClient">
<property name="appName" value="myapp" />
<property name="appKey" value="123456" />
<property name="servers" value="127.0.0.1:2143,127.0.0.1:2144" />
<!-- 可选配置 -->
<property name="listeners">
<list>
<ref bean="activityNoListener" />
<ref bean="timeInfoListener" />
<ref bean="timeInfosListener" />
<ref bean="timeInfoMapListener" />
</list>
</property>
</bean>
<!-- 可配置一些监听器,会在本地配置更新后触发 -->
<bean id="activityNoListener" class="me.hao0.diablo.client.listener.ActivityNoListener" />
<bean id="timeInfoListener" class="me.hao0.diablo.client.listener.TimeInfoListener" />
<bean id="timeInfosListener" class="me.hao0.diablo.client.listener.TimeInfosListener" />
<bean id="timeInfoMapListener" class="me.hao0.diablo.client.listener.TimeInfoMapListener" />
添加diablo配置Bean到spring上下文中, 如:
@Component
public class MyAppConfig implements DiabloConfig {
// 支持基本类型转换
private String activityNo;
private Integer activityChannel;
private Boolean activityStart;
private Float activityRatio;
private Long activityCount;
private Double activityFee;
// 支持普通json对象转换
private TimeInfo timeInfo;
// 支持一级List对象转换
private List<TimeInfo> timeInfos;
// 支持一级Map对象转换
private Map<String, TimeInfo> timeInfoMap;
// getters and setters
}
具体见测试用例.
这样一旦你通过Diablo Tower修改了对应配置项时,客户端将收到通知。
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