{"id":3289,"date":"2022-06-11T21:17:02","date_gmt":"2022-06-11T13:17:02","guid":{"rendered":"https:\/\/www.zeroheart.xyz\/wordpress\/?p=3289"},"modified":"2022-06-11T21:17:02","modified_gmt":"2022-06-11T13:17:02","slug":"gateway-%e6%80%8e%e4%b9%88%e8%bd%ae%e8%ae%ad%e5%be%ae%e6%9c%8d%e5%8a%a1%e5%ae%9e%e4%be%8b%e7%9a%84","status":"publish","type":"post","link":"https:\/\/www.zeroheart.xyz\/wordpress\/?p=3289","title":{"rendered":"gateway \u600e\u4e48\u8f6e\u8bad\u5fae\u670d\u52a1\u5b9e\u4f8b\u7684"},"content":{"rendered":"\n<p>1.\u5982\u679c\u81ea\u5b9a\u4e49\u4f7f\u7528\u7684\u5fae\u670d\u52a1\u5b9e\u4f8b\u7684\uff1f<\/p>\n\n\n\n<p>\u53c2\u8003\uff1a<a href=\"https:\/\/shandian.blog.csdn.net\/article\/details\/121701849?spm=1001.2101.3001.6650.2&amp;utm_medium=distribute.pc_relevant.none-task-blog-2%7Edefault%7ECTRLIST%7Edefault-2-121701849-blog-122772479.pc_relevant_default&amp;depth_1-utm_source=distribute.pc_relevant.none-task-blog-2%7Edefault%7ECTRLIST%7Edefault-2-121701849-blog-122772479.pc_relevant_default&amp;utm_relevant_index=5\">(26\u6761\u6d88\u606f) springcloud gateway \u53ea\u8bbf\u95ee\u672c\u5730\u6216\u6307\u5b9aip\u4e0b\u7684\u5fae\u670d\u52a1\u9879\u76ee_\u5c71\u5dc5\u7684\u535a\u5ba2-CSDN\u535a\u5ba2_\u901a\u8fc7gateway\u8bbf\u95ee\u5fae\u670d\u52a1<\/a> <\/p>\n\n\n\n<p>1.1.LocalHostAwareRule extends PredicateBasedRule \u7ee7\u627fPredicateBasedRule<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>@Slf4j\npublic class LocalHostAwareRule extends PredicateBasedRule {\n\n    @Override\n    public AbstractServerPredicate getPredicate() {\n        return AbstractServerPredicate.alwaysTrue();\n    }\n\n    @Override\n    public Server choose(Object key) {\n        ILoadBalancer lb = getLoadBalancer();\n\n        List&lt;Server> allServers = lb.getAllServers();\n        \/\/ \u8fc7\u6ee4\u670d\u52a1\u5217\u8868\n        List&lt;Server> serverList = this.filterServers(allServers);\n\n        Server server = getPredicate().chooseRoundRobinAfterFiltering(serverList, key).orNull();\n        log.info(server != null ? server.toString() : \"\u6ca1\u6709\u627e\u5230\u670d\u52a1\u5b9e\u4f8b\");\n        return server;\n    }\n\n    private List&lt;Server> filterServers(List&lt;Server> serverList) {\n        log.info(CollectionUtils.isEmpty(serverList) ? \"\u6ca1\u6709\u627e\u5230\u670d\u52a1\u5b9e\u4f8b\u5217\u8868\" : serverList.toString());\n        return Collections.unmodifiableList(serverList);\n    }\n}<\/code><\/pre>\n\n\n\n<p>1.2.\u589e\u52a0\u914d\u7f6eRibbonRuleAutoConfiguration<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>@Configuration\n@RequiredArgsConstructor\n\/\/\u4e00\u5b9a\u8981\u5728ribbon\u9ed8\u8ba4\u7684\u914d\u7f6e\u5668\u4e4b\u524d\u52a0\u8f7d\n@AutoConfigureBefore(RibbonClientConfiguration.class)\n\/\/\u5f53ribbon.rule.enabled\u4e3afalse\u65f6\u4e0d\u542f\u7528\u81ea\u5b9a\u4e49\u8fc7\u6ee4\u89c4\u5219\n@ConditionalOnProperty(value = \"ribbon.rule.enabled\", matchIfMissing = true)\npublic class RibbonRuleAutoConfiguration {\n    @Bean\n    @ConditionalOnMissingBean\n    \/\/\u8fd9\u91cc\u4e00\u5b9a\u8981\u914d\u7f6e\u4e3a\u591a\u4f8b\n    @Scope(ConfigurableBeanFactory.SCOPE_PROTOTYPE)\n    public PredicateBasedRule localHostAwareRule() {\n        return new LocalHostAwareRule();\n    }\n}\n\n<\/code><\/pre>\n\n\n\n<p>2.AbstractServerPredicate \u91cc\u9762\u600e\u4e48\u627e\u5230\u5fae\u670d\u52a1\u7684<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public abstract class AbstractServerPredicate implements Predicate&lt;PredicateKey> {\n \n    \/\/ \u8d1f\u8f7d\u5747\u8861\u5668LoadBalancer\u89c4\u5219\uff1a\u80fd\u4ece\u5176\u83b7\u53d6\u5230ILoadBalancer\uff0c\u4ece\u800c\u5f97\u5230\u4e00\u4e2a\u5bf9\u5e94\u7684LoadBalancerStats\u5b9e\u4f8b\n    protected IRule rule;\n    \/\/ LoadBalancer\u72b6\u6001\u4fe1\u606f\u3002\u53ef\u4ee5\u901a\u8fc7\u6784\u9020\u5668\u6307\u5b9a\/set\u65b9\u6cd5\u6307\u5b9a\uff0c\u82e5\u6ca1\u6709\u6307\u5b9a\u7684\u8bdd\u5c06\u4f1a\u4eceIRule\u91cc\u62ff\n    private volatile LoadBalancerStats lbStats;\n    \/\/ \u968f\u673a\u6570\u3002\u5f53\u8fc7\u6ee4\u540e\u8fd8\u5269\u591a\u53f0Server\u5c06\u4ece\u4e2d\u968f\u673a\u83b7\u53d6\n    private final Random random = new Random();\n    \/\/ \u4e0b\u4e00\u4e2a\u89d2\u6807\u3002\u7528\u4e8e\u8f6e\u8be2\u7b97\u6cd5\u7684\u6307\u793a\n    private final AtomicInteger nextIndex = new AtomicInteger();\n    \/\/ \u4e00\u4e2a\u7279\u6b8a\u7684Predicate\uff1a\u53ea\u6709Server\u53c2\u6570\u5e76\u65e0loadBalancerKey\u53c2\u6570\u7684PredicateKey\uff0c\u6700\u7ec8\u4e5f\u662f\u4f7f\u7528AbstractServerPredicate\u5b8c\u6210\u65ad\u8a00\n    private final Predicate&lt;Server> serverOnlyPredicate;\n    \n    public Predicate&lt;Server> getServerOnlyPredicate() {\n        return this.serverOnlyPredicate;\n    }\n}\n\n\n\nAbstractServerPredicate\uff0c\u5b83\u7684\u4f5c\u7528\u5c31\u662f\u5728\u4f17\u591aServer\u7684\u5217\u8868\u4e2d\uff0c\u901a\u8fc7\u4e00\u5b9a\u7684\u8fc7\u6ee4\u7b56\u7565\uff0cT\u9664\u4e0d\u5408\u683c\u7684Server\uff0c\u7559\u4e0b\u6765\u5408\u683c\u7684Server\u5217\u8868\uff0c\u8fdb\u800c\u4f9b\u4ee5\u9009\u62e9\n\nZoneAffinityPredicate\nAffinity\uff1a\u7c7b\u540c\u7684\uff0c\u5438\u5f15\u529b\u3002\u5b83\u53ea\u4f1a\u9009\u53d6\u6307\u5b9azone\u533a\u57df\u5185\u7684Server\uff0c\u8a00\u5916\u4e4b\u610f\u5c31\u662f\u4f1a\u8fc7\u6ee4\u6389\u5176\u5b83\u533a\u57df\u7684Server\u4eec\u3002\n\nZoneAvoidancePredicate\nAvoidance\uff1a\u907f\u514d\u3001\u56de\u907f\u3001\u8eb2\u5f00\u3002\u5b83\u8d1f\u8d23\u8fc7\u6ee4\u6389\u8fd9\u6837\u7684Server\u4eec\uff1a\u5f53\u67d0\u4e2azone\u975e\u5e38\u7cdf\u7cd5\uff0c\u7cdf\u7cd5\u5230\u7edf\u8ba1\u8fbe\u5230\u4e86threshold\u9608\u503c\uff0c\u90a3\u4e48\u5c31\u4f1a\u8fc7\u6ee4\u6389\u8fd9\u4e2azone\u91cc\u9762\u6240\u6709\u7684Server\u4eec\uff0c\u6240\u4ee5\u8be5\u65ad\u8a00\u5668\u662f\u5177\u6709\u5f88\u5f3a\u7684zone\u533a\u57df\u610f\u8bc6\u7684\u3002\n\n\nAvailabilityPredicate\navailability\uff1a\u53ef\u7528\u6027\uff0c\u6709\u6548\u6027\u3002\u8be5\u65ad\u8a00\u5668\u4e3b\u8981\u662f\u5bf9\u670d\u52a1\u7684\u53ef\u7528\u6027\u8fdb\u884c\u8fc7\u6ee4\uff08\u8fc7\u6ee4\u6389\u4e0d\u53ef\u7528\u7684\u670d\u52a1\u5668\uff09\u3002\u5f88\u660e\u663e\uff0c\u5b83\u7684\u5224\u65ad\u9700\u8981\u57fa\u4e8eLoadBalancerStats\/ServerStats\u6765\u5b8c\u6210\u3002\n\n\nCompositePredicate\n\u7ec4\u5408\u6a21\u5f0f\u3002\u5b83\u8fd8\u5177\u6709\u201c\u56de\u9000\u201d\u5230\u66f4\u591a\uff08\u4e0d\u6b62\u4e00\u4e2a\uff09\u4e0d\u540c\u8c13\u8bcd\u4e4b\u4e00\u7684\u529f\u80fd\u3002\u5982\u679c\u4e3b\u7684Predicate\u4ea7\u751f\u7684\u8fc7\u6ee4\u670d\u52a1\u5668\u592a\u5c11\uff0c\u5b83\u5c06\u4e00\u4e2a\u63a5\u4e00\u4e2a\u5730\u5c1d\u8bd5fallback\u7684Predicate\uff0c\u76f4\u5230\u8fc7\u6ee4\u670d\u52a1\u5668\u7684\u6570\u91cf\u8d85\u8fc7\u4e00\u5b9a\u6570\u91cf\u7684\u9608\u503c\u6216\u767e\u5206\u6bd4\u9608\u503c\u3002\n\n\n<\/code><\/pre>\n\n\n\n<p>\u53c2\u8003\uff1a<a href=\"https:\/\/blog.csdn.net\/qq_37634156\/article\/details\/122968115\">(26\u6761\u6d88\u606f) \u3010Ribbon\u8def\u7531\u89c4\u5219\u5668\u3011\u670d\u52a1\u7b5b\u9009\uff0c\u8fc7\u6ee4\u670d\u52a1\u57fa\u7840\u7ec4\u4ef6AbstractServerPredicate_\u552f\u7a7a\u57ce\u7684\u535a\u5ba2-CSDN\u535a\u5ba2<\/a><\/p>\n\n\n\n<p>3.\u8d1f\u8f7d\u7684\u7b56\u7565<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>AbstractLoadBalancerRule\n\n\u8d1f\u8f7d\u5747\u8861\u7b56\u7565\u7684\u62bd\u8c61\u7c7b\uff0c\u5728\u8be5\u7c7b\u4e2d\u5b9a\u4e49\u4e86\u8d1f\u8f7d\u5747\u8861\u5668ILoadBalancer\u5bf9\u8c61\uff0c\u8be5\u5bf9\u8c61\u80fd\u591f\u5728\u5177\u4f53\u5b9e\u73b0\u9009\u62e9\u670d\u52a1\u7b56\u7565\u65f6\uff0c\u83b7\u53d6\u5230\n\n\u4e00\u4e9b\u8d1f\u8f7d\u5747\u8861\u4e2d\u7ef4\u62a4\u7684\u4fe1\u606f\u6765\u4f5c\u4e3a\u5206\u914d\u4f9d\u636e\uff0c\u5e76\u4ee5\u6b64\u8bbe\u8ba1\u4e00\u4e9b\u7b97\u6cd5\u6765\u5b9e\u73b0\u9488\u5bf9\u7279\u5b9a\u573a\u666f\u7684\u9ad8\u6548\u7b56\u7565\n\n\nRandomRule\n\u968f\u673a\u9009\u62e9\u4e00\u4e2a\u670d\u52a1\u5b9e\u4f8b\n\nRoundRobinRule\n\u7ebf\u6027\u8f6e\u8be2\u7684\u65b9\u5f0f\n\nRetryRule\n\u5b9e\u73b0\u4e86\u4e00\u4e2a\u5177\u5907\u91cd\u8bd5\u673a\u5236\u7684\u5b9e\u4f8b\u9009\u62e9\u529f\u80fd\n\n\nWeightedResponseTimeRule\n\u8be5\u7b56\u7565\u662f\u5bf9RoundRobinRule\u7684\u6269\u5c55\uff0c\u589e\u52a0\u4e86\u6839\u636e\u5b9e\u4f8b\u7684\u8fd0\u884c\u60c5\u51b5\u6765\u8ba1\u7b97\u6743\u91cd\uff0c\u5e76\u6839\u636e\u6743\u91cd\u6765\u6311\u9009\u5b9e\u4f8b\uff0c\u4ee5\u8fbe\u5230\u66f4\u4f18\u7684\u5206\u914d\u6548\u679c\n\n\u5b9a\u65f6\u4efb\u52a1\nserverWeightTimer.schedule(new DynamicServerWeightTask(), 0, serverWeightTaskTimerInterval);\u542f\u52a8\u4e00\u4e2a\u5b9a\u65f6\u4efb\u52a1\uff0c\u7528\u6765\u4e3a\u6bcf\u4e2a\u670d\u52a1\u5b9e\u4f8b\u8ba1\u7b97\u6743\u91cd\n\n\u8be5\u65b9\u6cd5\u7684\u5b9e\u73b0\u4e3b\u8981\u5206\u4e3a\u4e24\u4e2a\u6b65\u9aa4\uff1a\n\u3000\u3000\u6839\u636eLoadBalancerStats\u4e2d\u8bb0\u5f55\u7684\u6bcf\u4e2a\u5b9e\u4f8b\u7684\u7edf\u8ba1\u4fe1\u606f\uff0c\u7d2f\u52a0\u6240\u6709\u5b9e\u4f8b\u7684\u5e73\u5747\u54cd\u5e94\u65f6\u95f4\uff0c\u5f97\u5230\u5e73\u5747\u54cd\u5e94\u65f6\u95f4\u603b\u548c\n\ntotalResponseTime\uff0c\u8be5\u503c\u4f1a\u7528\u4e8e\u540e\u7eed\u7684\u8ba1\u7b97\u3002\n\u00a0\u00a0\u00a0\u4e3a\u8d1f\u8f7d\u5747\u8861\u5668\u4e2d\u7ef4\u62a4\u7684\u5b9e\u4f8b\u6e05\u5355\u9010\u4e2a\u8ba1\u7b97\u6743\u91cd\uff08\u4ece\u7b2c\u4e00\u4e2a\u5f00\u59cb\uff09\uff0c\u8ba1\u7b97\u89c4\u5219\u4e3aweightSoFar+totalResponseTime\n\n- \u5b9e\u4f8b\u7684\u5e73\u5747\u54cd\u5e94\u65f6\u95f4\uff0c\u5176\u4e2dweightSoFar\u521d\u59cb\u4e3a\u96f6\uff0c\u5e76\u4e14\u6bcf\u8ba1\u7b97\u597d\u4e00\u4e2a\u6743\u91cd\u9700\u8981\u7d2f\u52a0\u5230weightSoFar\u4e0a\u4f9b\u4e0b\u4e00\u6b21\u8ba1\u7b97\u4f7f\u7528\n\n\n\nClientConfigEnableRoundRobinRule\n\u3000\u3000\u8be5\u7b56\u7565\u8f83\u4e3a\u7279\u6b8a\uff0c\u4e00\u822c\u4e0d\u76f4\u63a5\u4f7f\u7528\u5b83\uff0c\u56e0\u4e3a\u672c\u8eab\u6ca1\u6709\u7279\u6b8a\u7684\u5904\u7406\u903b\u8f91\uff0c\u5185\u90e8\u5b9a\u4e49\u4e86\u4e00\u4e2aRoundRobinRule,choose()\u65b9\u6cd5\u9ed8\u8ba4\u4f7f\u7528RoundRobinRule\u7684\u7ebf\u6027\u8f6e\u5faa\u673a\u5236\uff0c\n\u901a\u8fc7\u7ee7\u627f\u8be5\u7b56\u7565\uff0c\u5728\u5b50\u7c7b\u4e2d\u505a\u4e00\u4e9b\u9ad8\u7ea7\u7b56\u7565\u65f6\u901a\u5e38\u6709\u53ef\u80fd\u4f1a\u5b58\u5728\u4e00\u4e9b\u65e0\u6cd5\u5b9e\u65bd\u7684\u60c5\u51b5\uff0c\u90a3\u4e48\u5c31\u53ef\u4ee5\u7528\u7236\u7c7b\u7684\u5b9e\u73b0\u4f5c\u4e3a\u5907\u9009\u3002\n\n\nBestAvailableRule\nClientConfigEnableRoundRobinRule\u7684\u5b50\u7c7b\uff0c\u4e3b\u8981\u662f\u627e\u51fa\u5e76\u53d1\u8bf7\u6c42\u6570\u6700\u5c0f\u7684\u4e00\u4e2a\n\nPredicateBasedRule\n\u8fd9\u662f\u4e00\u4e2a\u62bd\u8c61\u7b56\u7565\uff0c\u5b83\u4e5f\u7ee7\u627f\u4e86ClientConfigEnabledRoundRobinRule\n\nAbstractServerPredicate \u7136\u540e\u5c31\u5f97\u5230\u4e0a\u6587\u4e2d\u7684\u51e0\u79cd\u7b56\u7565\u3002\n\n\n<\/code><\/pre>\n\n\n\n<p><a href=\"https:\/\/www.jianshu.com\/p\/1da28982ea65\">spring cloud ribbon \u5ba2\u6237\u7aef\u8d1f\u8f7d\u5747\u8861\u7b56\u7565 &#8211; \u7b80\u4e66 (jianshu.com)<\/a><\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>1.\u5982\u679c\u81ea\u5b9a\u4e49\u4f7f\u7528\u7684\u5fae\u670d\u52a1\u5b9e\u4f8b\u7684\uff1f \u53c2\u8003\uff1a(26\u6761\u6d88\u606f) springcloud gateway \u53ea\u8bbf\u95ee\u672c\u5730\u6216 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/3289"}],"collection":[{"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3289"}],"version-history":[{"count":37,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/3289\/revisions"}],"predecessor-version":[{"id":3326,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/3289\/revisions\/3326"}],"wp:attachment":[{"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3289"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3289"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3289"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}