| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 org.apache.servicecomb.loadbalance.filter; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| import java.util.Map.Entry; |
| |
| import org.apache.servicecomb.core.Invocation; |
| import org.apache.servicecomb.loadbalance.Configuration; |
| import org.apache.servicecomb.serviceregistry.api.registry.MicroserviceInstance; |
| import org.apache.servicecomb.serviceregistry.discovery.AbstractDiscoveryFilter; |
| import org.apache.servicecomb.serviceregistry.discovery.DiscoveryContext; |
| import org.apache.servicecomb.serviceregistry.discovery.DiscoveryTreeNode; |
| |
| import com.netflix.config.DynamicPropertyFactory; |
| |
| /** |
| * Instance property based filter |
| */ |
| public class InstancePropertyDiscoveryFilter extends AbstractDiscoveryFilter { |
| private static final String MATCHED = "matched"; |
| |
| @Override |
| public int getOrder() { |
| return 400; |
| } |
| |
| @Override |
| public boolean enabled() { |
| return DynamicPropertyFactory.getInstance() |
| .getBooleanProperty("servicecomb.loadbalance.filter.instanceProperty.enabled", true).get(); |
| } |
| |
| @Override |
| public boolean isGroupingFilter() { |
| return false; |
| } |
| |
| @Override |
| protected void init(DiscoveryContext context, DiscoveryTreeNode parent) { |
| Map<String, MicroserviceInstance> matchedInstance = new HashMap<>(); |
| Invocation invocation = context.getInputParameters(); |
| Map<String, MicroserviceInstance> instances = parent.data(); |
| Map<String, String> filterOptions = |
| Configuration.INSTANCE.getFlowsplitFilterOptions(invocation.getMicroserviceName()); |
| instances.forEach((key, target) -> { |
| if (allowVisit(target, filterOptions)) { |
| matchedInstance.put(key, target); |
| } |
| }); |
| parent.child(MATCHED, new DiscoveryTreeNode() |
| .subName(parent, MATCHED) |
| .data(matchedInstance)); |
| } |
| |
| @Override |
| protected String findChildName(DiscoveryContext context, DiscoveryTreeNode parent) { |
| return MATCHED; |
| } |
| |
| protected boolean allowVisit(MicroserviceInstance instance, Map<String, String> filterOptions) { |
| Map<String, String> propertiesMap = instance.getProperties(); |
| for (Entry<String, String> entry : filterOptions.entrySet()) { |
| if (!entry.getValue().equals(propertiesMap.get(entry.getKey()))) { |
| return false; |
| } |
| } |
| return true; |
| } |
| } |