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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.hosted.provision.maintenance;
import com.yahoo.component.Version;
import com.yahoo.config.provision.ApplicationId;
import com.yahoo.config.provision.Capacity;
import com.yahoo.config.provision.ClusterSpec;
import com.yahoo.config.provision.DockerImage;
import com.yahoo.config.provision.Environment;
import com.yahoo.config.provision.Flavor;
import com.yahoo.config.provision.NodeFlavors;
import com.yahoo.config.provision.NodeType;
import com.yahoo.config.provision.RegionName;
import com.yahoo.config.provision.Zone;
import com.yahoo.test.ManualClock;
import com.yahoo.vespa.curator.Curator;
import com.yahoo.vespa.curator.mock.MockCurator;
import com.yahoo.vespa.flags.InMemoryFlagSource;
import com.yahoo.vespa.hosted.provision.Node;
import com.yahoo.vespa.hosted.provision.NodeRepository;
import com.yahoo.vespa.hosted.provision.maintenance.retire.RetirementPolicy;
import com.yahoo.vespa.hosted.provision.node.Agent;
import com.yahoo.vespa.hosted.provision.provisioning.FlavorConfigBuilder;
import com.yahoo.vespa.hosted.provision.provisioning.FlavorSpareChecker;
import com.yahoo.vespa.hosted.provision.provisioning.NodeRepositoryProvisioner;
import com.yahoo.vespa.hosted.provision.testutils.MockDeployer;
import com.yahoo.vespa.hosted.provision.testutils.MockNameResolver;
import com.yahoo.vespa.hosted.provision.testutils.MockProvisionServiceProvider;
import com.yahoo.vespa.orchestrator.OrchestrationException;
import com.yahoo.vespa.orchestrator.Orchestrator;
import java.time.Duration;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.stream.Collectors;
import java.util.stream.LongStream;
import static org.junit.Assert.assertEquals;
import static org.mockito.Matchers.any;
import static org.mockito.Matchers.eq;
import static org.mockito.Mockito.doThrow;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;
/**
* @author freva
*/
public class NodeRetirerTester {
public static final Zone zone = new Zone(Environment.prod, RegionName.from("us-east"));
// Components with state
public final ManualClock clock = new ManualClock();
public final NodeRepository nodeRepository;
private final FlavorSpareChecker flavorSpareChecker = mock(FlavorSpareChecker.class);
private final MockDeployer deployer;
private final JobControl jobControl;
private final List<Flavor> flavors;
// Use LinkedHashMap to keep order in which applications were deployed
private final Map<ApplicationId, MockDeployer.ApplicationContext> apps = new LinkedHashMap<>();
private final Orchestrator orchestrator = mock(Orchestrator.class);
private RetiredExpirer retiredExpirer;
private InactiveExpirer inactiveExpirer;
private int nextNodeId = 0;
NodeRetirerTester(NodeFlavors nodeFlavors) {
Curator curator = new MockCurator();
nodeRepository = new NodeRepository(nodeFlavors, curator, clock, zone, new MockNameResolver().mockAnyLookup(),
new DockerImage("docker-registry.domain.tld:8080/dist/vespa"), true);
jobControl = new JobControl(nodeRepository.database());
NodeRepositoryProvisioner provisioner = new NodeRepositoryProvisioner(nodeRepository, nodeFlavors, zone, new MockProvisionServiceProvider(), new InMemoryFlagSource());
deployer = new MockDeployer(provisioner, clock, apps);
flavors = nodeFlavors.getFlavors().stream().sorted(Comparator.comparing(Flavor::name)).collect(Collectors.toList());
try {
doThrow(new RuntimeException()).when(orchestrator).acquirePermissionToRemove(any());
} catch (OrchestrationException e) {
e.printStackTrace();
}
}
NodeRetirer makeNodeRetirer(RetirementPolicy policy) {
return new NodeRetirer(nodeRepository, flavorSpareChecker, Duration.ofDays(1), deployer, jobControl, policy);
}
void createReadyNodesByFlavor(int... nums) {
List<Node> nodes = new ArrayList<>();
for (int i = 0; i < nums.length; i++) {
Flavor flavor = flavors.get(i);
for (int j = 0; j < nums[i]; j++) {
int id = nextNodeId++;
nodes.add(nodeRepository.createNode("node" + id, "host" + id + ".test.yahoo.com",
Collections.singleton("::1"), Optional.empty(), flavor, NodeType.tenant));
}
}
nodes = nodeRepository.addNodes(nodes);
nodes = nodeRepository.setDirty(nodes, Agent.system, getClass().getSimpleName());
nodeRepository.setReady(nodes, Agent.system, getClass().getSimpleName());
}
void deployApp(String tenantName, String applicationName, int[] flavorIds, int[] numNodes) {
final ApplicationId applicationId = ApplicationId.from(tenantName, applicationName, "default");
final List<MockDeployer.ClusterContext> clusterContexts = new ArrayList<>();
for (int i = 0; i < flavorIds.length; i++) {
Flavor flavor = flavors.get(flavorIds[i]);
ClusterSpec cluster = ClusterSpec.request(ClusterSpec.Type.container, ClusterSpec.Id.from("cluster-" + i), Version.fromString("6.99"), false, Collections.emptySet());
Capacity capacity = Capacity.fromNodeCount(numNodes[i], Optional.of(flavor.name()), false, true);
// If the number of node the app wants is divisible by 2, make it into 2 groups, otherwise as 1
int numGroups = numNodes[i] % 2 == 0 ? 2 : 1;
clusterContexts.add(new MockDeployer.ClusterContext(applicationId, cluster, capacity, numGroups));
}
apps.put(applicationId, new MockDeployer.ApplicationContext(applicationId, clusterContexts));
deployer.deployFromLocalActive(applicationId, Duration.ZERO).get().activate();
}
void iterateMaintainers() {
if (retiredExpirer == null) {
retiredExpirer = new RetiredExpirer(nodeRepository, orchestrator, deployer, clock, Duration.ofDays(30), Duration.ofMinutes(10), jobControl);
inactiveExpirer = new InactiveExpirer(nodeRepository, clock, Duration.ofMinutes(10), jobControl);
}
clock.advance(Duration.ofMinutes(11));
retiredExpirer.maintain();
clock.advance(Duration.ofMinutes(11));
inactiveExpirer.maintain();
}
void setNumberAllowedUnallocatedRetirementsPerFlavor(int... numAllowed) {
for (int i = 0; i < numAllowed.length; i++) {
Boolean[] responses = new Boolean[numAllowed[i]];
Arrays.fill(responses, true);
responses[responses.length - 1 ] = false;
when(flavorSpareChecker.canRetireUnallocatedNodeWithFlavor(eq(flavors.get(i)))).thenReturn(true, responses);
}
}
void setNumberAllowedAllocatedRetirementsPerFlavor(int... numAllowed) {
for (int i = 0; i < numAllowed.length; i++) {
Boolean[] responses = new Boolean[numAllowed[i]];
Arrays.fill(responses, true);
responses[responses.length - 1] = false;
when(flavorSpareChecker.canRetireAllocatedNodeWithFlavor(eq(flavors.get(i)))).thenReturn(true, responses);
}
}
void assertCountsForStateByFlavor(Node.State state, long... nums) {
Map<Flavor, Long> expected = expectedCountsByFlavor(nums);
Map<Flavor, Long> actual = nodeRepository.getNodes(state).stream()
.collect(Collectors.groupingBy(Node::flavor, Collectors.counting()));
assertEquals(expected, actual);
}
void assertParkedCountsByApplication(long... nums) {
// Nodes lose allocation when parked, so just do a sum.
long expected = LongStream.of(nums).filter(value -> value > 0L).sum();
long actual = (long) nodeRepository.getNodes(Node.State.parked).size();
assertEquals(expected, actual);
}
// Nodes that are being retired or about to be retired (wantToRetire flag set), but are not yet fully retired (not parked)
void assertRetiringCountsByApplication(long... nums) {
Map<ApplicationId, Long> expected = expectedCountsByApplication(nums);
Map<ApplicationId, Long> actual = nodeRepository.getNodes().stream()
.filter(node -> node.status().wantToRetire())
.filter(node -> node.allocation().isPresent())
.filter(node -> node.allocation().get().membership().retired())
.filter(node -> node.state() != Node.State.parked)
.collect(Collectors.groupingBy(node -> node.allocation().get().owner(), Collectors.counting()));
assertEquals(expected, actual);
}
private Map<Flavor, Long> expectedCountsByFlavor(long... nums) {
Map<Flavor, Long> countsByFlavor = new HashMap<>();
for (int i = 0; i < nums.length; i++) {
if (nums[i] < 0) continue;
Flavor flavor = flavors.get(i);
countsByFlavor.put(flavor, nums[i]);
}
return countsByFlavor;
}
private Map<ApplicationId, Long> expectedCountsByApplication(long... nums) {
Map<ApplicationId, Long> countsByApplicationId = new HashMap<>();
Iterator<ApplicationId> iterator = apps.keySet().iterator();
for (int i = 0; iterator.hasNext(); i++) {
ApplicationId applicationId = iterator.next();
if (nums[i] < 0) continue;
countsByApplicationId.put(applicationId, nums[i]);
}
return countsByApplicationId;
}
static NodeFlavors makeFlavors(int numFlavors) {
FlavorConfigBuilder flavorConfigBuilder = new FlavorConfigBuilder();
for (int i = 0; i < numFlavors; i++) {
flavorConfigBuilder.addFlavor("flavor-" + i, 1. /* cpu*/, 3. /* mem GB*/, 2. /*disk GB*/, Flavor.Type.BARE_METAL);
}
return new NodeFlavors(flavorConfigBuilder.build());
}
}
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