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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.impl;
import org.apache.dubbo.common.logger.ErrorTypeAwareLogger;
import org.apache.dubbo.common.logger.LoggerFactory;
import org.apache.dubbo.registry.xds.util.XdsChannel;
import org.apache.dubbo.registry.xds.util.protocol.AbstractProtocol;
import org.apache.dubbo.registry.xds.util.protocol.delta.DeltaRoute;
import org.apache.dubbo.registry.xds.util.protocol.message.RouteResult;
import com.google.protobuf.Any;
import com.google.protobuf.InvalidProtocolBufferException;
import io.envoyproxy.envoy.config.core.v3.Node;
import io.envoyproxy.envoy.config.route.v3.Route;
import io.envoyproxy.envoy.config.route.v3.RouteAction;
import io.envoyproxy.envoy.config.route.v3.RouteConfiguration;
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.stream.Collectors;
import static org.apache.dubbo.common.constants.LoggerCodeConstants.REGISTRY_ERROR_RESPONSE_XDS;
public class RdsProtocol extends AbstractProtocol {
private static final ErrorTypeAwareLogger logger = LoggerFactory.getErrorTypeAwareLogger(RdsProtocol.class);
public RdsProtocol(XdsChannel xdsChannel, Node node, int pollingPoolSize, int pollingTimeout) {
super(xdsChannel, node, pollingPoolSize, pollingTimeout);
}
@Override
public String getTypeUrl() {
return "type.googleapis.com/envoy.config.route.v3.RouteConfiguration";
}
@Override
protected RouteResult decodeDiscoveryResponse(DiscoveryResponse response) {
if (getTypeUrl().equals(response.getTypeUrl())) {
Map> map = response.getResourcesList().stream()
.map(RdsProtocol::unpackRouteConfiguration)
.filter(Objects::nonNull)
.map(RdsProtocol::decodeResourceToListener)
.reduce((a, b) -> {
a.putAll(b);
return a;
}).orElse(new HashMap<>());
return new RouteResult(map);
}
return new RouteResult();
}
private static Map> decodeResourceToListener(RouteConfiguration resource) {
Map> map = new HashMap<>();
resource.getVirtualHostsList()
.forEach(virtualHost -> {
Set cluster = virtualHost.getRoutesList().stream()
.map(Route::getRoute)
.map(RouteAction::getCluster)
.collect(Collectors.toSet());
for (String domain : virtualHost.getDomainsList()) {
map.put(domain, cluster);
}
});
return map;
}
private static RouteConfiguration unpackRouteConfiguration(Any any) {
try {
return any.unpack(RouteConfiguration.class);
} catch (InvalidProtocolBufferException e) {
logger.error(REGISTRY_ERROR_RESPONSE_XDS, "", "", "Error occur when decode xDS response.", e);
return null;
}
}
}