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// Copyright Verizon Media. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.hosted.controller.maintenance;
import com.yahoo.config.provision.SystemName;
import com.yahoo.vespa.hosted.controller.Controller;
import com.yahoo.vespa.hosted.controller.api.integration.configserver.Node;
import com.yahoo.vespa.hosted.controller.api.integration.configserver.NodeRepository;
import com.yahoo.vespa.hosted.controller.api.integration.entity.EntityService;
import com.yahoo.vespa.hosted.controller.api.integration.entity.NodeEntity;
import com.yahoo.vespa.hosted.controller.api.integration.noderepository.NodeRepositoryNode;
import java.time.Duration;
import java.util.EnumSet;
import java.util.Map;
import java.util.function.Function;
import java.util.logging.Logger;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.stream.Collectors;
/**
* Ensures that the switch information for all hosts is up to date.
*
* @author mpolden
*/
public class HostSwitchUpdater extends ControllerMaintainer {
private static final Logger LOG = Logger.getLogger(HostSwitchUpdater.class.getName());
private static final Pattern HOST_PATTERN = Pattern.compile("^(proxy|cfg|controller)host(.+)$");
private final NodeRepository nodeRepository;
public HostSwitchUpdater(Controller controller, Duration interval) {
super(controller, interval, null, EnumSet.of(SystemName.cd, SystemName.main));
this.nodeRepository = controller.serviceRegistry().configServer().nodeRepository();
}
@Override
protected boolean maintain() {
Map<String, NodeEntity> nodeEntities = controller().serviceRegistry().entityService().listNodes().stream()
.collect(Collectors.toMap(NodeEntity::hostname,
Function.identity()));
int nodesUpdated = 0;
try {
for (var zone : controller().zoneRegistry().zones().controllerUpgraded().all().ids()) {
for (var node : nodeRepository.list(zone)) {
if (!node.type().isHost()) continue;
NodeEntity nodeEntity = nodeEntities.get(registeredHostnameOf(node));
if (!shouldUpdate(node, nodeEntity)) continue;
NodeRepositoryNode updatedNode = new NodeRepositoryNode();
updatedNode.setSwitchHostname(nodeEntity.switchHostname().get());
nodeRepository.patchNode(zone, node.hostname().value(), updatedNode);
nodesUpdated++;
}
}
} finally {
if (nodesUpdated > 0) {
LOG.info("Updated switch hostname for " + nodesUpdated + " node(s)");
}
}
return true;
}
/** Returns the hostname that given host is registered under in the {@link EntityService} */
private static String registeredHostnameOf(Node host) {
String hostname = host.hostname().value();
if (!host.type().isHost()) return hostname;
Matcher matcher = HOST_PATTERN.matcher(hostname);
if (!matcher.matches()) return hostname;
return matcher.replaceFirst("$1$2");
}
private static boolean shouldUpdate(Node node, NodeEntity nodeEntity) {
if (nodeEntity == null) return false;
if (nodeEntity.switchHostname().isEmpty()) return false;
return !node.switchHostname().equals(nodeEntity.switchHostname());
}
}
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