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/* |
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* Copyright 1999-2018 Alibaba Group Holding Ltd. |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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package com.alibaba.csp.sentinel.cluster.server; |
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import com.alibaba.csp.sentinel.log.RecordLog; |
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import com.alibaba.csp.sentinel.util.SpiLoader; |
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/** |
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* @author Eric Zhao |
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* @since 1.4.0 |
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*/ |
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public final class EmbeddedClusterTokenServerProvider { |
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private static EmbeddedClusterTokenServer server = null; |
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static { |
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resolveInstance(); |
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} |
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private static void resolveInstance() { |
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EmbeddedClusterTokenServer s = SpiLoader.loadFirstInstance(EmbeddedClusterTokenServer.class); |
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if (s == null) { |
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RecordLog.warn("[EmbeddedClusterTokenServerProvider] No existing cluster token server, cluster server mode will not be activated"); |
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} else { |
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server = s; |
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RecordLog.info("[EmbeddedClusterTokenServerProvider] Cluster token server resolved: " + server.getClass().getCanonicalName()); |
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} |
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} |
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public static EmbeddedClusterTokenServer getServer() { |
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return server; |
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} |
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private EmbeddedClusterTokenServerProvider() {} |
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} |