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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.ClusterResources;
import com.yahoo.config.provision.NodeResources;
import com.yahoo.test.ManualClock;
import com.yahoo.vespa.hosted.provision.testutils.OrchestratorMock;
import org.junit.Test;
import java.time.Duration;
import java.util.Optional;
import java.util.Set;
import java.util.concurrent.CompletableFuture;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
/**
* @author bratseth
*/
public class AutoscalingIntegrationTest {
@Test
public void testComponentIntegration() {
var fixture = AutoscalingTester.fixture()
.hostResources(new NodeResources(3, 20, 200, 1))
.initialResources(Optional.of(new ClusterResources(2, 1,
new NodeResources(1, 10, 100, 1))))
.build();
MetricsV2MetricsFetcher fetcher = new MetricsV2MetricsFetcher(fixture.tester().nodeRepository(),
new OrchestratorMock(),
new MockHttpClient(fixture.tester().clock()));
Autoscaler autoscaler = new Autoscaler(fixture.tester().nodeRepository());
// The metrics response (below) hardcodes these hostnames:
assertEquals(Set.of("node-1-of-host-1.yahoo.com", "node-1-of-host-10.yahoo.com"), fixture.nodes().hostnames());
for (int i = 0; i < 1000; i++) {
fixture.tester().clock().advance(Duration.ofSeconds(10));
fetcher.fetchMetrics(fixture.applicationId()).whenComplete((r, e) -> fixture.tester().nodeMetricsDb().addNodeMetrics(r.nodeMetrics()));
fixture.tester().clock().advance(Duration.ofSeconds(10));
fixture.tester().nodeMetricsDb().gc();
}
var scaledResources = autoscaler.suggest(fixture.application(), fixture.cluster(), fixture.nodes());
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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