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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.hosted.provision.os;
import com.yahoo.config.provision.NodeType;
import com.yahoo.vespa.hosted.provision.Node;
import com.yahoo.vespa.hosted.provision.NodeList;
import com.yahoo.vespa.hosted.provision.NodeRepository;
import com.yahoo.vespa.hosted.provision.node.filter.NodeListFilter;
import java.time.Instant;
import java.util.Optional;
import java.util.logging.Logger;
/**
* An upgrader that delegates the upgrade to the node itself, triggered by changing its wanted OS version. Downgrades
* are not supported.
*
* Used in clouds where nodes can upgrade themselves in-place, without data loss.
*
* @author mpolden
*/
public class DelegatingOsUpgrader extends OsUpgrader {
private static final Logger LOG = Logger.getLogger(DelegatingOsUpgrader.class.getName());
public DelegatingOsUpgrader(NodeRepository nodeRepository) {
super(nodeRepository);
}
@Override
public void upgradeTo(OsVersionTarget target) {
NodeList activeNodes = nodeRepository.nodes().list(Node.State.active).nodeType(target.nodeType());
Instant now = nodeRepository.clock().instant();
NodeList nodesToUpgrade = activeNodes.not().changingOsVersionTo(target.version())
// This upgrader cannot downgrade nodes. We therefore consider only nodes
// on a lower version than the target
.osVersionIsBefore(target.version())
.matching(node -> canUpgradeAt(now, node))
.byIncreasingOsVersion()
.first(upgradeSlots(target, activeNodes));
if (nodesToUpgrade.size() == 0) return;
LOG.info("Upgrading " + nodesToUpgrade.size() + " nodes of type " + target.nodeType() + " to OS version " +
target.version().toFullString());
nodeRepository.nodes().upgradeOs(NodeListFilter.from(nodesToUpgrade.asList()), Optional.of(target.version()));
}
@Override
public void disableUpgrade(NodeType type) {
NodeList nodesUpgrading = nodeRepository.nodes().list()
.nodeType(type)
.changingOsVersion();
if (nodesUpgrading.size() == 0) return;
LOG.info("Disabling OS upgrade of all " + type + " nodes");
nodeRepository.nodes().upgradeOs(NodeListFilter.from(nodesUpgrading.asList()), Optional.empty());
}
}
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