org.apache.dubbo.registry.xds.util.protocol.impl.LdsProtocol Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of dubbo Show documentation
Show all versions of dubbo Show documentation
The all in one project of dubbo
/*
* 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.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.Collections;
import java.util.Objects;
import java.util.Set;
import java.util.function.Consumer;
import java.util.stream.Collectors;
import static org.apache.dubbo.common.constants.LoggerCodeConstants.REGISTRY_ERROR_RESPONSE_XDS;
public class LdsProtocol extends AbstractProtocol {
private static final ErrorTypeAwareLogger logger = LoggerFactory.getErrorTypeAwareLogger(LdsProtocol.class);
public LdsProtocol(XdsChannel xdsChannel, Node node, int pollingPoolSize, int pollingTimeout) {
super(xdsChannel, node, pollingPoolSize, pollingTimeout);
}
@Override
public String getTypeUrl() {
return "type.googleapis.com/envoy.config.listener.v3.Listener";
}
public ListenerResult getListeners() {
return getResource(null);
}
public void observeListeners(Consumer consumer) {
observeResource(Collections.emptySet(), consumer);
}
@Override
protected ListenerResult decodeDiscoveryResponse(DiscoveryResponse response) {
if (getTypeUrl().equals(response.getTypeUrl())) {
Set set = response.getResourcesList().stream()
.map(LdsProtocol::unpackListener)
.filter(Objects::nonNull)
.flatMap((e) -> decodeResourceToListener(e).stream())
.collect(Collectors.toSet());
return new ListenerResult(set);
}
return new ListenerResult();
}
private Set 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;
}
}
}