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/*
* 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.dubbo.registry.xds.util.protocol.delta;
import org.apache.dubbo.common.utils.CollectionUtils;
import org.apache.dubbo.registry.xds.util.protocol.DeltaResource;
import org.apache.dubbo.registry.xds.util.protocol.message.ListenerResult;
import java.util.Collection;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import java.util.stream.Collectors;
public class DeltaListener implements DeltaResource<ListenerResult> {
private final Map<String, Set<String>> data = new ConcurrentHashMap<>();
public void addResource(String resourceName, Set<String> listeners) {
data.put(resourceName, listeners);
}
public void removeResource(Collection<String> resourceName) {
if (CollectionUtils.isNotEmpty(resourceName)) {
resourceName.forEach(data::remove);
}
}
@Override
public ListenerResult getResource() {
Set<String> set = data.values().stream().flatMap(Set::stream).collect(Collectors.toSet());
return new ListenerResult(set);
}
}