规则datasource 存储 about sentinel HOT 4 CLOSED

Hi, this makes no sense. Since you are using datasource extension, you must know where your rules is stored.

Sentinel provides an SPI extension - InitFunc. You can implement your own InitFunc to init the datasource. For example:

package com.test.init;

public class DataSourceInitFunc implements InitFunc {

    @Override
    public void init() throws Exception {
        final String remoteAddress = "localhost";
        final String groupId = "Sentinel:Demo";
        final String dataId = "com.alibaba.csp.sentinel.demo.flow.rule";

        DataSource<String, List<FlowRule>> flowRuleDataSource = new NacosDataSource<>(remoteAddress, groupId, dataId,
            source -> JSON.parseObject(source, new TypeReference<List<FlowRule>>() {}));
        FlowRuleManager.register2Property(flowRuleDataSource.getProperty());
    }
}

Then add the class to com.alibaba.csp.sentinel.init.InitFunc file in META-INF/services directory of the resource directory:

com.test.init.DataSourceInitFunc

Then when you trigger a resource access, Sentinel will scan all InitFunc and initialize the datasource automatically. You don't have to manually call it.

from sentinel.

真不知道怎么想的

from sentinel.

为什么不借鉴下dubbo的方式呢，让使用者更方便呢

from sentinel.

Hi, this makes no sense. Since you are using datasource extension, you must know where your rules is stored.

Sentinel provides an SPI extension - InitFunc. You can implement your own InitFunc to init the datasource. For example:

package com.test.init;

public class DataSourceInitFunc implements InitFunc {

    @Override
    public void init() throws Exception {
        final String remoteAddress = "localhost";
        final String groupId = "Sentinel:Demo";
        final String dataId = "com.alibaba.csp.sentinel.demo.flow.rule";

        DataSource<String, List<FlowRule>> flowRuleDataSource = new NacosDataSource<>(remoteAddress, groupId, dataId,
            source -> JSON.parseObject(source, new TypeReference<List<FlowRule>>() {}));
        FlowRuleManager.register2Property(flowRuleDataSource.getProperty());
    }
}

Then add the class to com.alibaba.csp.sentinel.init.InitFunc file in META-INF/services directory of the resource directory:

com.test.init.DataSourceInitFunc

Then when you trigger a resource access, Sentinel will scan all InitFunc and initialize the datasource automatically. You don't have to manually call it.

这种自定义InitFunc里面需要使用Spring的@autowire、@value 或者Jdk自带@resource 来获取属性会失效吧，我自己写了例子都不能成功，目前所有的demo里都是代码硬编码写死这部分动态参数

from sentinel.