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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.autoscale;
import com.yahoo.config.provision.ApplicationId;
import com.yahoo.config.provision.Capacity;
import com.yahoo.config.provision.ClusterResources;
import com.yahoo.config.provision.ClusterSpec;
import com.yahoo.config.provision.HostSpec;
import com.yahoo.config.provision.NodeResources;
import com.yahoo.test.ManualClock;
import com.yahoo.transaction.Mutex;
import com.yahoo.vespa.hosted.provision.applications.Application;
import com.yahoo.vespa.hosted.provision.testutils.OrchestratorMock;
import org.junit.Test;
import java.time.Duration;
import java.util.Set;
import java.util.concurrent.CompletableFuture;
import java.util.stream.Collectors;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
/**
* @author bratseth
*/
public class AutoscalingIntegrationTest {
@Test
public void testComponentIntegration() {
NodeResources nodes = new NodeResources(1, 10, 100, 1);
NodeResources hosts = new NodeResources(3, 20, 200, 1);
AutoscalingTester tester = new AutoscalingTester(hosts);
MetricsV2MetricsFetcher fetcher = new MetricsV2MetricsFetcher(tester.nodeRepository(),
new OrchestratorMock(),
new MockHttpClient(tester.clock()));
Autoscaler autoscaler = new Autoscaler(tester.nodeRepository());
ApplicationId application1 = AutoscalingTester.applicationId("test1");
ClusterSpec cluster1 = AutoscalingTester.clusterSpec(ClusterSpec.Type.container, "test");
Set<String> hostnames = tester.deploy(application1, cluster1, 2, 1, nodes)
.stream().map(HostSpec::hostname)
.collect(Collectors.toSet());
// The metrics response (below) hardcodes these hostnames:
assertEquals(Set.of("node-1-of-host-1.yahoo.com", "node-1-of-host-10.yahoo.com"), hostnames);
for (int i = 0; i < 1000; i++) {
tester.clock().advance(Duration.ofSeconds(10));
fetcher.fetchMetrics(application1).whenComplete((r, e) -> tester.nodeMetricsDb().addNodeMetrics(r.nodeMetrics()));
tester.clock().advance(Duration.ofSeconds(10));
tester.nodeMetricsDb().gc();
}
ClusterResources min = new ClusterResources(2, 1, nodes);
ClusterResources max = new ClusterResources(2, 1, nodes);
Application application = tester.nodeRepository().applications().get(application1).orElse(Application.empty(application1))
.withCluster(cluster1.id(), false, Capacity.from(min, max));
try (Mutex lock = tester.nodeRepository().nodes().lock(application1)) {
tester.nodeRepository().applications().put(application, lock);
}
var scaledResources = autoscaler.suggest(application, application.clusters().get(cluster1.id()),
tester.nodeRepository().nodes().list().owner(application1));
assertTrue(scaledResources.isPresent());
}
private static class MockHttpClient implements MetricsV2MetricsFetcher.AsyncHttpClient {
private final ManualClock clock;
public MockHttpClient(ManualClock clock) {
this.clock = clock;
}
final String cannedResponse =
"{\n" +
" \"nodes\": [\n" +
" {\n" +
" \"hostname\": \"node-1-of-host-1.yahoo.com\",\n" +
" \"role\": \"role0\",\n" +
" \"node\": {\n" +
" \"timestamp\": [now],\n" +
" \"metrics\": [\n" +
" {\n" +
" \"values\": {\n" +
" \"cpu.util\": 16.2,\n" +
" \"mem_total.util\": 23.1,\n" +
" \"disk.util\": 82\n" +
" },\n" +
" \"dimensions\": {\n" +
" \"state\": \"active\"\n" +
" }\n" +
" }\n" +
" ]\n" +
" }\n" +
" },\n" +
" {\n" +
" \"hostname\": \"node-1-of-host-10.yahoo.com\",\n" +
" \"role\": \"role1\",\n" +
" \"node\": {\n" +
" \"timestamp\": [now],\n" +
" \"metrics\": [\n" +
" {\n" +
" \"values\": {\n" +
" \"cpu.util\": 20,\n" +
" \"mem_total.util\": 23.1,\n" +
" \"disk.util\": 40\n" +
" },\n" +
" \"dimensions\": {\n" +
" \"state\": \"active\"\n" +
" }\n" +
" }\n" +
" ]\n" +
" }\n" +
" }\n" +
" ]\n" +
"}\n";
@Override
public CompletableFuture<String> get(String url) {
return CompletableFuture.completedFuture(cannedResponse.replace("[now]",
String.valueOf(clock.millis()))); }
@Override
public void close() { }
}
}
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