tencentcloud-edgeone-migration-nodejs-v2
Version:
tencentcloud cdn config copy to edgeone
32 lines • 1.1 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.StatelessLoadBalancer = void 0;
const plugins_1 = require("../../plugins");
const kDefaultOptions = {
/**
* 是否开启动态权重
*/
dynamicWeight: true
};
class StatelessLoadBalancer {
constructor(options) {
this.type = plugins_1.PluginType.LoadBalancer;
this.supportedWeightType = 0 /* Dynamic */;
this.options = Object.assign(Object.assign({}, kDefaultOptions), options);
}
instanceWeight(instance) {
return instance.staticWeight + (this.options.dynamicWeight ? instance.dynamicWeight : 0);
}
/**
* 随机 `choose` 多次，
* 避免请求顺序固定导致的后端访问不均衡
*/
randomChoose(namespace, service, instances, args) {
const chooseCount = ~~(Math.random() * instances.length);
for (let i = 0; i < chooseCount; i += 1) {
this.choose(namespace, service, instances, args);
}
}
}
exports.StatelessLoadBalancer = StatelessLoadBalancer;
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