| /* |
| * 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.impl; |
| |
| import org.apache.dubbo.common.logger.ErrorTypeAwareLogger; |
| import org.apache.dubbo.common.logger.LoggerFactory; |
| import org.apache.dubbo.registry.xds.util.AdsObserver; |
| import org.apache.dubbo.registry.xds.util.protocol.AbstractProtocol; |
| import org.apache.dubbo.registry.xds.util.protocol.delta.DeltaListener; |
| import org.apache.dubbo.registry.xds.util.protocol.message.ListenerResult; |
| |
| import com.google.protobuf.Any; |
| import com.google.protobuf.InvalidProtocolBufferException; |
| import io.envoyproxy.envoy.config.core.v3.Node; |
| import io.envoyproxy.envoy.config.listener.v3.Filter; |
| import io.envoyproxy.envoy.config.listener.v3.Listener; |
| import io.envoyproxy.envoy.extensions.filters.network.http_connection_manager.v3.HttpConnectionManager; |
| import io.envoyproxy.envoy.extensions.filters.network.http_connection_manager.v3.Rds; |
| import io.envoyproxy.envoy.service.discovery.v3.DiscoveryResponse; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| import java.util.Objects; |
| import java.util.Set; |
| import java.util.concurrent.ConcurrentHashMap; |
| import java.util.stream.Collectors; |
| |
| import static org.apache.dubbo.common.constants.LoggerCodeConstants.REGISTRY_ERROR_RESPONSE_XDS; |
| |
| public class LdsProtocol extends AbstractProtocol<ListenerResult, DeltaListener> { |
| private static final ErrorTypeAwareLogger logger = LoggerFactory.getErrorTypeAwareLogger(LdsProtocol.class); |
| |
| public LdsProtocol(AdsObserver adsObserver, Node node, int checkInterval) { |
| super(adsObserver, node, checkInterval); |
| } |
| |
| @Override |
| public String getTypeUrl() { |
| return "type.googleapis.com/envoy.config.listener.v3.Listener"; |
| } |
| |
| public Map<String, ListenerResult> getListeners() { |
| return getResource(null); |
| } |
| |
| @Override |
| protected Map<String, ListenerResult> decodeDiscoveryResponse(DiscoveryResponse response) { |
| if (getTypeUrl().equals(response.getTypeUrl())) { |
| Set<String> set = response.getResourcesList().stream() |
| .map(LdsProtocol::unpackListener) |
| .filter(Objects::nonNull) |
| .flatMap(e -> decodeResourceToListener(e).stream()) |
| .collect(Collectors.toSet()); |
| Map<String, ListenerResult> listenerDecodeResult = new ConcurrentHashMap<>(); |
| listenerDecodeResult.put(emptyResourceName, new ListenerResult(set)); |
| return listenerDecodeResult; |
| } |
| return new HashMap<>(); |
| } |
| |
| private Set<String> decodeResourceToListener(Listener resource) { |
| return resource.getFilterChainsList().stream() |
| .flatMap(e -> e.getFiltersList().stream()) |
| .map(Filter::getTypedConfig) |
| .map(LdsProtocol::unpackHttpConnectionManager) |
| .filter(Objects::nonNull) |
| .map(HttpConnectionManager::getRds) |
| .map(Rds::getRouteConfigName) |
| .collect(Collectors.toSet()); |
| } |
| |
| private static Listener unpackListener(Any any) { |
| try { |
| return any.unpack(Listener.class); |
| } catch (InvalidProtocolBufferException e) { |
| logger.error(REGISTRY_ERROR_RESPONSE_XDS, "", "", "Error occur when decode xDS response.", e); |
| return null; |
| } |
| } |
| |
| private static HttpConnectionManager unpackHttpConnectionManager(Any any) { |
| try { |
| if (!any.is(HttpConnectionManager.class)) { |
| return null; |
| } |
| return any.unpack(HttpConnectionManager.class); |
| } catch (InvalidProtocolBufferException e) { |
| logger.error(REGISTRY_ERROR_RESPONSE_XDS, "", "", "Error occur when decode xDS response.", e); |
| return null; |
| } |
| } |
| } |