/* * Copyright (c) 2017 the original author or authors * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.github.enadim.spring.cloud.ribbon.predicate; import com.github.enadim.spring.cloud.ribbon.support.StrictMetadataMatcherConfig; import com.netflix.niws.loadbalancer.DiscoveryEnabledServer; import lombok.extern.slf4j.Slf4j; import java.util.Map; import java.util.Map.Entry; import java.util.Set; import static com.github.enadim.spring.cloud.ribbon.context.ExecutionContextHolder.current; import static java.lang.String.format; /** * Strict server metadata matcher over all the execution context entries. * * @author Nadim Benabdenbi * @see StrictMetadataMatcherConfig for a concrete usage */ @Slf4j public class StrictMetadataMatcher extends DiscoveryEnabledServerPredicate { /** * {@inheritDoc} */ @Override protected boolean doApply(DiscoveryEnabledServer server) { Set<Entry<String, String>> expected = current().entrySet(); Map<String, String> actual = server.getInstanceInfo().getMetadata(); boolean accept = actual.entrySet().containsAll(expected); log.trace("Expected {} vs {}:{}{} => {}", expected, server.getHostPort(), server.getMetaInfo().getAppName(), actual, accept); return accept; } /** * {@inheritDoc} */ @Override public String toString() { return format("StrictMetadataMatcher%s", current().entrySet()); } }