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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.provisioning;
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.HostSpec;
import com.yahoo.config.provision.NodeType;
import com.yahoo.vespa.hosted.provision.Node;
import com.yahoo.vespa.hosted.provision.maintenance.RetiredExpirer;
import com.yahoo.vespa.hosted.provision.node.Agent;
import com.yahoo.vespa.hosted.provision.testutils.MockDeployer;
import org.junit.Before;
import org.junit.Test;
import java.time.Duration;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.stream.Collectors;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotEquals;
import static org.junit.Assert.assertTrue;
/**
* Tests provisioning by node type instead of by count and flavor
*
* @author bratseth
*/
public class NodeTypeProvisioningTest {
private final ProvisioningTester tester = new ProvisioningTester.Builder().build();
private final ApplicationId application = tester.makeApplicationId(); // application using proxy nodes
private final Capacity capacity = Capacity.fromRequiredNodeType(NodeType.proxy);
private final ClusterSpec clusterSpec = ClusterSpec.request(ClusterSpec.Type.container,
ClusterSpec.Id.from("test"),
Version.fromString("6.42"),
false);
@Before
public void setup() {
tester.makeReadyNodes( 1, "small", NodeType.proxy);
tester.makeReadyNodes( 3, "small", NodeType.host);
tester.makeReadyNodes( 5, "small", NodeType.tenant);
tester.makeReadyNodes(10, "large", NodeType.proxy);
tester.makeReadyNodes(20, "large", NodeType.host);
tester.makeReadyNodes(40, "large", NodeType.tenant);
}
@Test
public void proxy_deployment() {
{ // Deploy
List<HostSpec> hosts = deployProxies(application, tester);
assertEquals("Reserved all proxies", 11, hosts.size());
tester.activate(application, new HashSet<>(hosts));
List<Node> nodes = tester.nodeRepository().getNodes(NodeType.proxy, Node.State.active);
assertEquals("Activated all proxies", 11, nodes.size());
}
{ // Redeploy with no changes
List<HostSpec> hosts = deployProxies(application, tester);
assertEquals(11, hosts.size());
tester.activate(application, new HashSet<>(hosts));
List<Node> nodes = tester.nodeRepository().getNodes(NodeType.proxy, Node.State.active);
assertEquals(11, nodes.size());
}
{ // Add 2 ready proxies then redeploy
tester.makeReadyNodes(2, "small", NodeType.proxy);
List<HostSpec> hosts = deployProxies(application, tester);
assertEquals(13, hosts.size());
tester.activate(application, new HashSet<>(hosts));
List<Node> nodes = tester.nodeRepository().getNodes(NodeType.proxy, Node.State.active);
assertEquals(13, nodes.size());
}
{ // Remove 3 proxies then redeploy
List<Node> nodes = tester.nodeRepository().getNodes(NodeType.proxy, Node.State.active);
tester.nodeRepository().fail(nodes.get(0).hostname(), Agent.system, "Failing to unit test");
tester.nodeRepository().fail(nodes.get(1).hostname(), Agent.system, "Failing to unit test");
tester.nodeRepository().fail(nodes.get(5).hostname(), Agent.system, "Failing to unit test");
List<HostSpec> hosts = deployProxies(application, tester);
assertEquals(10, hosts.size());
tester.activate(application, new HashSet<>(hosts));
nodes = tester.nodeRepository().getNodes(NodeType.proxy, Node.State.active);
assertEquals(10, nodes.size());
}
}
@Test
public void retire_proxy() {
MockDeployer deployer = new MockDeployer(
tester.provisioner(),
tester.clock(),
Collections.singletonMap(
application, new MockDeployer.ApplicationContext(application, clusterSpec, capacity, 1)));
RetiredExpirer retiredExpirer = new RetiredExpirer(tester.nodeRepository(), tester.orchestrator(), deployer,
tester.clock(), Duration.ofDays(30), Duration.ofMinutes(10));
{ // Deploy
List<HostSpec> hosts = deployProxies(application, tester);
assertEquals("Reserved all proxies", 11, hosts.size());
tester.activate(application, new HashSet<>(hosts));
List<Node> nodes = tester.nodeRepository().getNodes(NodeType.proxy, Node.State.active);
assertEquals("Activated all proxies", 11, nodes.size());
}
Node nodeToRetire = tester.nodeRepository().getNodes(NodeType.proxy, Node.State.active).get(5);
{ // Pick out a node and retire it
tester.nodeRepository().write(nodeToRetire.with(nodeToRetire.status().withWantToRetire(true)), () -> {});
List<HostSpec> hosts = deployProxies(application, tester);
assertEquals(11, hosts.size());
tester.activate(application, new HashSet<>(hosts));
List<Node> nodes = tester.nodeRepository().getNodes(NodeType.proxy, Node.State.active);
assertEquals(11, nodes.size());
// Verify that wantToRetire has been propagated
assertTrue(tester.nodeRepository().getNode(nodeToRetire.hostname())
.flatMap(Node::allocation)
.map(allocation -> allocation.membership().retired())
.orElseThrow(RuntimeException::new));
}
{ // Redeploying while the node is still retiring has no effect
List<HostSpec> hosts = deployProxies(application, tester);
assertEquals(11, hosts.size());
tester.activate(application, new HashSet<>(hosts));
List<Node> nodes = tester.nodeRepository().getNodes(NodeType.proxy, Node.State.active);
assertEquals(11, nodes.size());
// Verify that the node is still marked as retired
assertTrue(tester.nodeRepository().getNode(nodeToRetire.hostname())
.flatMap(Node::allocation)
.map(allocation -> allocation.membership().retired())
.orElseThrow(RuntimeException::new));
}
{
tester.advanceTime(Duration.ofMinutes(11));
retiredExpirer.run();
List<HostSpec> hosts = deployProxies(application, tester);
assertEquals(10, hosts.size());
tester.activate(application, new HashSet<>(hosts));
List<Node> nodes = tester.nodeRepository().getNodes(NodeType.proxy, Node.State.active);
assertEquals(10, nodes.size());
// Verify that the node is now inactive
assertEquals(Node.State.inactive, tester.nodeRepository().getNode(nodeToRetire.hostname())
.orElseThrow(RuntimeException::new).state());
}
}
@Test
public void retire_multiple_proxy_simultaneously() {
MockDeployer deployer = new MockDeployer(tester.provisioner(),
tester.clock(),
Collections.singletonMap(application,
new MockDeployer.ApplicationContext(application, clusterSpec, capacity, 1)));
RetiredExpirer retiredExpirer = new RetiredExpirer(tester.nodeRepository(),
tester.orchestrator(),
deployer,
tester.clock(),
Duration.ofDays(30),
Duration.ofMinutes(10));
final int numNodesToRetire = 5;
{ // Deploy
List<HostSpec> hosts = deployProxies(application, tester);
assertEquals("Reserved all proxies", 11, hosts.size());
tester.activate(application, new HashSet<>(hosts));
List<Node> nodes = tester.nodeRepository().getNodes(NodeType.proxy, Node.State.active);
assertEquals("Activated all proxies", 11, nodes.size());
}
List<Node> nodesToRetire = tester.nodeRepository().getNodes(NodeType.proxy, Node.State.active)
.subList(3, 3 + numNodesToRetire);
String currentyRetiringHostname;
{
nodesToRetire.forEach(nodeToRetire ->
tester.nodeRepository().write(nodeToRetire.with(nodeToRetire.status().withWantToRetire(true)), () -> {}));
List<HostSpec> hosts = deployProxies(application, tester);
assertEquals(11, hosts.size());
tester.activate(application, new HashSet<>(hosts));
List<Node> nodes = tester.nodeRepository().getNodes(NodeType.proxy, Node.State.active);
assertEquals(11, nodes.size());
// Verify that wantToRetire has been propagated
List<Node> nodesCurrentlyRetiring = nodes.stream()
.filter(node -> node.allocation().get().membership().retired())
.collect(Collectors.toList());
assertEquals(1, nodesCurrentlyRetiring.size());
// The retiring node should be one of the nodes we marked for retirement
currentyRetiringHostname = nodesCurrentlyRetiring.get(0).hostname();
assertTrue(nodesToRetire.stream().map(Node::hostname).filter(hostname -> hostname.equals(currentyRetiringHostname)).count() == 1);
}
{ // Redeploying while the node is still retiring has no effect
List<HostSpec> hosts = deployProxies(application, tester);
assertEquals(11, hosts.size());
tester.activate(application, new HashSet<>(hosts));
List<Node> nodes = tester.nodeRepository().getNodes(NodeType.proxy, Node.State.active);
assertEquals(11, nodes.size());
// Verify that wantToRetire has been propagated
List<Node> nodesCurrentlyRetiring = nodes.stream()
.filter(node -> node.allocation().get().membership().retired())
.collect(Collectors.toList());
assertEquals(1, nodesCurrentlyRetiring.size());
// The node that started retiring is still the only one retiring
assertEquals(currentyRetiringHostname, nodesCurrentlyRetiring.get(0).hostname());
}
{
tester.advanceTime(Duration.ofMinutes(11));
retiredExpirer.run();
List<HostSpec> hosts = deployProxies(application, tester);
assertEquals(10, hosts.size());
tester.activate(application, new HashSet<>(hosts));
List<Node> nodes = tester.nodeRepository().getNodes(NodeType.proxy, Node.State.active);
assertEquals(10, nodes.size());
// Verify the node we previously set to retire has finished retiring
assertEquals(Node.State.inactive, tester.nodeRepository().getNode(currentyRetiringHostname)
.orElseThrow(RuntimeException::new).state());
// Verify that a node is currently retiring
List<Node> nodesCurrentlyRetiring = nodes.stream()
.filter(node -> node.allocation().get().membership().retired())
.collect(Collectors.toList());
assertEquals(1, nodesCurrentlyRetiring.size());
// This node is different from the one that was retiring previously
String newRetiringHostname = nodesCurrentlyRetiring.get(0).hostname();
assertNotEquals(currentyRetiringHostname, newRetiringHostname);
// ... but is one of the nodes that were put to wantToRetire earlier
assertTrue(nodesToRetire.stream().map(Node::hostname).filter(hostname -> hostname.equals(newRetiringHostname)).count() == 1);
}
for (int i = 0; i < 10; i++){
tester.advanceTime(Duration.ofMinutes(11));
retiredExpirer.run();
List<HostSpec> hosts = deployProxies(application, tester);
tester.activate(application, new HashSet<>(hosts));
}
// After a long time, all currently active proxy nodes are not marked with wantToRetire or as retired
long numRetiredActiveProxyNodes = tester.nodeRepository().getNodes(NodeType.proxy, Node.State.active).stream()
.filter(node -> !node.status().wantToRetire())
.filter(node -> !node.allocation().get().membership().retired())
.count();
assertEquals(11 - numNodesToRetire, numRetiredActiveProxyNodes);
// All the nodes that were marked with wantToRetire earlier are now inactive
assertEquals(nodesToRetire.stream().map(Node::hostname).collect(Collectors.toSet()),
tester.nodeRepository().getNodes(Node.State.inactive).stream().map(Node::hostname).collect(Collectors.toSet()));
}
private List<HostSpec> deployProxies(ApplicationId application, ProvisioningTester tester) {
return tester.prepare(application, clusterSpec, capacity, 1);
}
}
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