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// Copyright 2018 Yahoo Holdings. 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.component.Version;
import com.yahoo.config.provision.ApplicationId;
import com.yahoo.vespa.hosted.controller.NodeRepositoryMock;
import com.yahoo.vespa.hosted.controller.api.integration.configserver.Node;
import com.yahoo.vespa.hosted.controller.api.integration.zone.UpgradePolicy;
import com.yahoo.vespa.hosted.controller.api.integration.zone.ZoneId;
import com.yahoo.vespa.hosted.controller.application.SystemApplication;
import com.yahoo.vespa.hosted.controller.deployment.DeploymentTester;
import org.junit.Test;
import java.util.Arrays;
import java.util.List;
import java.util.function.Function;
import static org.junit.Assert.assertEquals;
/**
* @author mpolden
*/
public class SystemUpgraderTest {
private static final ZoneId zone1 = ZoneId.from("prod", "eu-west-1");
private static final ZoneId zone2 = ZoneId.from("prod", "us-west-1");
private static final ZoneId zone3 = ZoneId.from("prod", "us-central-1");
private static final ZoneId zone4 = ZoneId.from("prod", "us-east-3");
private final DeploymentTester tester = new DeploymentTester();
@Test
public void upgrade_system() {
tester.controllerTester().zoneRegistry().setUpgradePolicy(
UpgradePolicy.create()
.upgrade(zone1)
.upgradeInParallel(zone2, zone3)
.upgrade(zone4)
);
Version version1 = Version.fromString("6.5");
// Bootstrap a system without host applications
tester.configServer().bootstrap(Arrays.asList(zone1, zone2, zone3, zone4), SystemApplication.configServer,
SystemApplication.zone);
// Fail a few nodes. Failed nodes should not affect versions
failNodeIn(zone1, SystemApplication.configServer);
failNodeIn(zone3, SystemApplication.zone);
tester.upgradeSystem(version1);
tester.systemUpgrader().maintain();
assertCurrentVersion(SystemApplication.configServer, version1, zone1, zone2, zone3, zone4);
assertCurrentVersion(SystemApplication.zone, version1, zone1, zone2, zone3, zone4);
// Controller upgrades
Version version2 = Version.fromString("6.6");
tester.upgradeController(version2);
assertEquals(version2, tester.controller().versionStatus().controllerVersion().get().versionNumber());
// System upgrade starts
tester.systemUpgrader().maintain();
assertWantedVersion(SystemApplication.configServer, version2, zone1);
// Other zones remain on previous version
assertWantedVersion(SystemApplication.configServer, version1, zone2, zone3, zone4);
// Zone application is not upgraded yet
assertWantedVersion(SystemApplication.zone, version1, zone1, zone2, zone3, zone4);
// zone1: zone-config-server upgrades
completeUpgrade(SystemApplication.configServer, version2, zone1);
// zone 1: zone-application upgrades
tester.systemUpgrader().maintain();
assertWantedVersion(SystemApplication.zone, version2, zone1);
completeUpgrade(SystemApplication.zone, version2, zone1);
// zone 2, 3 and 4: still targets old version
assertWantedVersion(SystemApplication.configServer, version1, zone2, zone3, zone4);
assertWantedVersion(SystemApplication.zone, version1, zone2, zone3, zone4);
// zone 2 and 3: zone-config-server upgrades in parallel
tester.systemUpgrader().maintain();
assertWantedVersion(SystemApplication.configServer, version2, zone2, zone3);
assertWantedVersion(SystemApplication.configServer, version1, zone4);
assertWantedVersion(SystemApplication.zone, version1, zone2, zone3, zone4);
completeUpgrade(SystemApplication.configServer, version2, zone2, zone3);
// zone 2 and 3: zone-application upgrades in parallel
tester.systemUpgrader().maintain();
assertWantedVersion(SystemApplication.zone, version2, zone2, zone3);
completeUpgrade(SystemApplication.zone, version2, zone2, zone3);
// zone 4: zone-config-server upgrades
tester.systemUpgrader().maintain();
assertWantedVersion(SystemApplication.configServer, version2, zone4);
assertWantedVersion(SystemApplication.zone, version1, zone4);
completeUpgrade(SystemApplication.configServer, version2, zone4);
// System version remains unchanged until final application upgrades
tester.computeVersionStatus();
assertEquals(version1, tester.controller().versionStatus().systemVersion().get().versionNumber());
// zone 4: zone-application upgrades
tester.systemUpgrader().maintain();
assertWantedVersion(SystemApplication.zone, version2, zone4);
completeUpgrade(SystemApplication.zone, version2, zone4);
tester.computeVersionStatus();
assertEquals(version2, tester.controller().versionStatus().systemVersion().get().versionNumber());
// Next run does nothing as system is now upgraded
tester.systemUpgrader().maintain();
assertWantedVersion(SystemApplication.configServer, version2, zone1, zone2, zone3, zone4);
assertWantedVersion(SystemApplication.zone, version2, zone1, zone2, zone3, zone4);
}
@Test
public void upgrade_system_containing_host_applications() {
tester.controllerTester().zoneRegistry().setUpgradePolicy(
UpgradePolicy.create()
.upgrade(zone1)
.upgradeInParallel(zone2, zone3)
.upgrade(zone4)
);
Version version1 = Version.fromString("6.5");
tester.configServer().bootstrap(Arrays.asList(zone1, zone2, zone3, zone4), SystemApplication.all());
tester.upgradeSystem(version1);
tester.systemUpgrader().maintain();
assertCurrentVersion(SystemApplication.all(), version1, zone1, zone2, zone3, zone4);
// Controller upgrades
Version version2 = Version.fromString("6.6");
tester.upgradeController(version2);
assertEquals(version2, tester.controller().versionStatus().controllerVersion().get().versionNumber());
// System upgrades in zone 1:
tester.systemUpgrader().maintain();
List<SystemApplication> allExceptZone = Arrays.asList(SystemApplication.configServerHost,
SystemApplication.proxyHost,
SystemApplication.configServer);
completeUpgrade(allExceptZone, version2, zone1);
tester.systemUpgrader().maintain();
completeUpgrade(SystemApplication.zone, version2, zone1);
assertWantedVersion(SystemApplication.all(), version1, zone2, zone3, zone4);
// zone 2 and 3:
tester.systemUpgrader().maintain();
completeUpgrade(allExceptZone, version2, zone2, zone3);
tester.systemUpgrader().maintain();
completeUpgrade(SystemApplication.zone, version2, zone2, zone3);
assertWantedVersion(SystemApplication.all(), version1, zone4);
// zone 4:
tester.systemUpgrader().maintain();
completeUpgrade(allExceptZone, version2, zone4);
tester.systemUpgrader().maintain();
completeUpgrade(SystemApplication.zone, version2, zone4);
// All done
tester.systemUpgrader().maintain();
assertWantedVersion(SystemApplication.all(), version2, zone1, zone2, zone3, zone4);
}
@Test
public void never_downgrades_system() {
ZoneId zone = ZoneId.from("prod", "eu-west-1");
tester.controllerTester().zoneRegistry().setUpgradePolicy(UpgradePolicy.create().upgrade(zone));
Version version = Version.fromString("6.5");
tester.upgradeSystem(version);
tester.systemUpgrader().maintain();
assertWantedVersion(SystemApplication.configServer, version, zone);
assertWantedVersion(SystemApplication.zone, version, zone);
// Controller is downgraded
tester.upgradeController(Version.fromString("6.4"));
// Wanted version for zone remains unchanged
tester.systemUpgrader().maintain();
assertWantedVersion(SystemApplication.configServer, version, zone);
assertWantedVersion(SystemApplication.zone, version, zone);
}
/** Simulate upgrade of nodes allocated to given application. In a real system this is done by the node itself */
private void completeUpgrade(SystemApplication application, Version version, ZoneId... zones) {
assertWantedVersion(application, version, zones);
for (ZoneId zone : zones) {
for (Node node : nodeRepository().listOperational(zone, application.id())) {
nodeRepository().add(zone, new Node(node.hostname(), node.state(), node.type(), node.owner(),
node.wantedVersion(), node.wantedVersion()));
}
assertCurrentVersion(application, version, zone);
}
}
private void completeUpgrade(List<SystemApplication> applications, Version version, ZoneId... zones) {
applications.forEach(application -> completeUpgrade(application, version, zones));
}
private void failNodeIn(ZoneId zone, SystemApplication application) {
List<Node> nodes = nodeRepository().list(zone, application.id());
if (nodes.isEmpty()) {
throw new IllegalArgumentException("No nodes allocated to " + application.id());
}
Node node = nodes.get(0);
nodeRepository().add(zone, new Node(node.hostname(), Node.State.failed, node.type(), node.owner(),
node.currentVersion(), node.wantedVersion()));
}
private void assertWantedVersion(SystemApplication application, Version version, ZoneId... zones) {
assertVersion(application.id(), version, Node::wantedVersion, zones);
}
private void assertCurrentVersion(SystemApplication application, Version version, ZoneId... zones) {
assertVersion(application.id(), version, Node::currentVersion, zones);
}
private void assertWantedVersion(List<SystemApplication> applications, Version version, ZoneId... zones) {
applications.forEach(application -> assertVersion(application.id(), version, Node::wantedVersion, zones));
}
private void assertCurrentVersion(List<SystemApplication> applications, Version version, ZoneId... zones) {
applications.forEach(application -> assertVersion(application.id(), version, Node::currentVersion, zones));
}
private void assertVersion(ApplicationId application, Version version, Function<Node, Version> versionField,
ZoneId... zones) {
for (ZoneId zone : zones) {
for (Node node : nodeRepository().listOperational(zone, application)) {
assertEquals(application + " version", version, versionField.apply(node));
}
}
}
private NodeRepositoryMock nodeRepository() {
return tester.controllerTester().configServer().nodeRepository();
}
}
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