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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.hosted.routing.nginx;
import com.google.common.jimfs.Jimfs;
import com.yahoo.config.provision.ApplicationId;
import com.yahoo.config.provision.ClusterSpec;
import com.yahoo.config.provision.zone.RoutingMethod;
import com.yahoo.config.provision.zone.ZoneId;
import com.yahoo.jdisc.test.MockMetric;
import com.yahoo.vespa.hosted.routing.RoutingTable;
import com.yahoo.vespa.hosted.routing.RoutingTable.Endpoint;
import com.yahoo.vespa.hosted.routing.RoutingTable.Target;
import com.yahoo.vespa.hosted.routing.mock.HealthStatusMock;
import com.yahoo.vespa.hosted.routing.status.ServerGroup;
import org.junit.Test;
import java.io.IOException;
import java.nio.file.FileSystem;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.attribute.FileTime;
import java.time.Duration;
import java.time.Instant;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNull;
/**
* @author mortent
* @author mpolden
*/
public class NginxMetricsReporterTest {
private static final ApplicationId routingApp = ApplicationId.from("hosted-vespa", "routing", "default");
private static final Target target0 = createTarget("vespa", "music", "prod", "gateway");
private static final Target target1 = createTarget("vespa", "music", "prod", "qrs");
private static final Target target2 = createTarget("vespa", "donbot", "default", "default");
private static final Target target3 = createTarget("notchecked", "notchecked", "default", "default");
private static final Target target4 = createTarget("not", "appearing-in-routing", "default", "default");
private static final Target target5 = createTarget(routingApp.tenant().value(), routingApp.application().value(), routingApp.instance().value(), "routing");
private final MockMetric metrics = new MockMetric();
private final RoutingTable routingTable = createRoutingTable();
private final HealthStatusMock healthService = new HealthStatusMock();
private final FileSystem fileSystem = Jimfs.newFileSystem();
private final NginxMetricsReporter reporter = new NginxMetricsReporter(routingApp, metrics, healthService,
fileSystem, Duration.ofDays(1),
() -> Optional.of(routingTable));
@Test
public void upstream_metrics() {
List<ServerGroup.Server> servers = List.of(
new ServerGroup.Server("gateway.prod.music.vespa.us-east-2.prod", "10.78.114.166:4080", true),
new ServerGroup.Server("gateway.prod.music.vespa.us-east-2.prod", "10.78.115.68:4080", true),
new ServerGroup.Server("qrs.prod.music.vespa.us-east-2.prod", "10.78.114.166:4080", true),
new ServerGroup.Server("qrs.prod.music.vespa.us-east-2.prod", "10.78.115.68:4080", true),
new ServerGroup.Server("qrs.prod.music.vespa.us-east-2.prod", "10.78.114.166:4080", false),
new ServerGroup.Server("qrs.prod.music.vespa.us-east-2.prod", "10.78.115.68:4080", false),
new ServerGroup.Server("qrs.prod.music.vespa.us-east-2.prod", "10.78.114.166:4080", false),
new ServerGroup.Server("qrs.prod.music.vespa.us-east-2.prod", "10.78.115.68:4080", false),
new ServerGroup.Server("donbot.vespa.us-east-2.prod", "10.201.8.47:4080", true),
new ServerGroup.Server("donbot.vespa.us-east-2.prod", "10.201.14.46:4080", false),
new ServerGroup.Server("appearing-in-routing.not.us-east-2.prod", "10.201.14.50:4080", false)
);
healthService.setStatus(new ServerGroup(servers));
reporter.run();
assertEquals(2D, getMetric(NginxMetricsReporter.UPSTREAM_UP_METRIC, dimensionsOf(target0)), Double.MIN_VALUE);
assertEquals(0D, getMetric(NginxMetricsReporter.UPSTREAM_DOWN_METRIC, dimensionsOf(target0)), Double.MIN_VALUE);
assertEquals(0D, getMetric(NginxMetricsReporter.UPSTREAM_UNKNOWN_METRIC, dimensionsOf(target0)), Double.MIN_VALUE);
assertEquals(2L, getMetric(NginxMetricsReporter.UPSTREAM_UP_METRIC, dimensionsOf(target1)), Double.MIN_VALUE);
assertEquals(4L, getMetric(NginxMetricsReporter.UPSTREAM_DOWN_METRIC, dimensionsOf(target1)), Double.MIN_VALUE);
assertEquals(0L, getMetric(NginxMetricsReporter.UPSTREAM_UNKNOWN_METRIC, dimensionsOf(target1)), Double.MIN_VALUE);
assertEquals(1D, getMetric(NginxMetricsReporter.UPSTREAM_UP_METRIC, dimensionsOf(target2)), Double.MIN_VALUE);
assertEquals(1D, getMetric(NginxMetricsReporter.UPSTREAM_DOWN_METRIC, dimensionsOf(target2)), Double.MIN_VALUE);
assertEquals(0D, getMetric(NginxMetricsReporter.UPSTREAM_UNKNOWN_METRIC, dimensionsOf(target2)), Double.MIN_VALUE);
// If the application appears in routing table - but not in health check cache yet
assertEquals(0D, getMetric(NginxMetricsReporter.UPSTREAM_UP_METRIC, dimensionsOf(target3)), Double.MIN_VALUE);
assertEquals(0D, getMetric(NginxMetricsReporter.UPSTREAM_DOWN_METRIC, dimensionsOf(target3)), Double.MIN_VALUE);
assertEquals(1D, getMetric(NginxMetricsReporter.UPSTREAM_UNKNOWN_METRIC, dimensionsOf(target3)), Double.MIN_VALUE);
// If the application does not appear in routing table - but still appears in cache
assertNull(getMetric(NginxMetricsReporter.UPSTREAM_UP_METRIC, dimensionsOf(target4)));
assertNull(getMetric(NginxMetricsReporter.UPSTREAM_DOWN_METRIC, dimensionsOf(target4)));
assertNull(getMetric(NginxMetricsReporter.UPSTREAM_UNKNOWN_METRIC, dimensionsOf(target4)));
assertNull(getMetric(NginxMetricsReporter.UPSTREAM_UP_METRIC, dimensionsOf(target5)));
assertNull(getMetric(NginxMetricsReporter.UPSTREAM_DOWN_METRIC, dimensionsOf(target5)));
assertEquals(1D, getMetric(NginxMetricsReporter.UPSTREAM_UNKNOWN_METRIC, dimensionsOf(target5)), Double.MIN_VALUE);
}
@Test
public void config_age_metric() throws Exception {
reporter.run();
// No files exist
assertEquals(0D, getMetric(NginxMetricsReporter.CONFIG_AGE_METRIC), Double.MIN_VALUE);
// Only temporary file exists
Path configRoot = fileSystem.getPath("/opt/vespa/var/vespa-hosted/routing/");
Path tempFile = configRoot.resolve("nginxl4.conf.tmp");
createFile(tempFile, Instant.ofEpochSecond(123));
reporter.run();
assertEquals(123D, getMetric(NginxMetricsReporter.CONFIG_AGE_METRIC), Double.MIN_VALUE);
// Only main file exists
Files.delete(tempFile);
createFile(configRoot.resolve("nginxl4.conf"), Instant.ofEpochSecond(456));
reporter.run();
assertEquals(0D, getMetric(NginxMetricsReporter.CONFIG_AGE_METRIC), Double.MIN_VALUE);
// Both files exist
createFile(tempFile, Instant.ofEpochSecond(123));
reporter.run();
assertEquals(333D, getMetric(NginxMetricsReporter.CONFIG_AGE_METRIC), Double.MIN_VALUE);
}
private double getMetric(String name) {
return getMetric(name, Map.of());
}
private Double getMetric(String name, Map<String, ?> dimensions) {
Map<Map<String, ?>, Double> metric = metrics.metrics().get(name);
if (metric == null) throw new IllegalArgumentException("Metric '" + name + "' not found");
return metric.get(dimensions);
}
private void createFile(Path path, Instant lastModified) throws IOException {
Files.createDirectories(path.getParent());
Files.createFile(path);
Files.setLastModifiedTime(path, FileTime.from(lastModified));
}
private Map<String, ?> dimensionsOf(Target target) {
return Map.of(
"tenantName", target.tenant().value(),
"app", String.format("%s.%s", target.application().value(), target.instance().get().value()),
"applicationId", String.format("%s.%s.%s", target.tenant().value(), target.application().value(), target.instance().get().value()),
"clusterid", target.cluster().value()
);
}
private static Target createTarget(String tenantName, String applicationName, String instanceName, String clusterName) {
ZoneId zone = ZoneId.from("prod", "us-east-2");
ClusterSpec.Id cluster = ClusterSpec.Id.from(clusterName);
return Target.create(ApplicationId.from(tenantName, applicationName, instanceName), cluster, zone, List.of());
}
private static RoutingTable createRoutingTable() {
return new RoutingTable(Map.of(new Endpoint("endpoint0", RoutingMethod.sharedLayer4), target0,
new Endpoint("endpoint1", RoutingMethod.sharedLayer4), target1,
new Endpoint("endpoint2", RoutingMethod.sharedLayer4), target2,
new Endpoint("endpoint3", RoutingMethod.sharedLayer4), target3),
42);
}
}
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