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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.Flavor;
import com.yahoo.config.provision.NodeType;
import com.yahoo.jdisc.Metric;
import com.yahoo.vespa.applicationmodel.HostName;
import com.yahoo.vespa.hosted.provision.Node;
import com.yahoo.vespa.hosted.provision.NodeRepository;
import com.yahoo.vespa.hosted.provision.node.Allocation;
import com.yahoo.vespa.hosted.provision.provisioning.DockerHostCapacity;
import com.yahoo.vespa.orchestrator.HostNameNotFoundException;
import com.yahoo.vespa.orchestrator.Orchestrator;
import com.yahoo.vespa.orchestrator.status.HostStatus;
import java.time.Duration;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.stream.Collectors;
/**
* @author oyving
*/
public class MetricsReporter extends Maintainer {
private final Metric metric;
private final Orchestrator orchestrator;
private final Map<Map<String, String>, Metric.Context> contextMap = new HashMap<>();
public MetricsReporter(NodeRepository nodeRepository,
Metric metric,
Orchestrator orchestrator,
Duration interval,
JobControl jobControl) {
super(nodeRepository, interval, jobControl);
this.metric = metric;
this.orchestrator = orchestrator;
}
@Override
public void maintain() {
List<Node> nodes = nodeRepository().getNodes();
nodes.forEach(this::updateNodeMetrics);
updateStateMetrics(nodes);
updateDockerMetrics(nodes);
}
private void updateNodeMetrics(Node node) {
// Dimensions automatically added: host, vespaVersion, zone, role, and colo.
// 'vespaVersion' is the vespaVersion for the config server and not related
// to the node we're making metric for now.
Metric.Context context;
Optional<Allocation> allocation = node.allocation();
if (allocation.isPresent()) {
ApplicationId applicationId = allocation.get().owner();
context = getContextAt(
"state", node.state().name(),
"hostname", node.hostname(),
"tenantName", applicationId.tenant().value(),
"applicationId", applicationId.serializedForm().replace(':', '.'),
"clustertype", allocation.get().membership().cluster().type().name(),
"clusterid", allocation.get().membership().cluster().id().value());
long wantedRestartGeneration = allocation.get().restartGeneration().wanted();
metric.set("wantedRestartGeneration", wantedRestartGeneration, context);
long currentRestartGeneration = allocation.get().restartGeneration().current();
metric.set("currentRestartGeneration", currentRestartGeneration, context);
boolean wantToRestart = currentRestartGeneration < wantedRestartGeneration;
metric.set("wantToRestart", wantToRestart ? 1 : 0, context);
Version wantedVersion = allocation.get().membership().cluster().vespaVersion();
double wantedVersionNumber = getVersionAsNumber(wantedVersion);
metric.set("wantedVespaVersion", wantedVersionNumber, context);
Optional<Version> currentVersion = node.status().vespaVersion();
boolean converged = currentVersion.isPresent() &&
currentVersion.get().equals(wantedVersion);
metric.set("wantToChangeVespaVersion", converged ? 0 : 1, context);
} else {
context = getContextAt(
"state", node.state().name(),
"hostname", node.hostname());
}
Optional<Version> currentVersion = node.status().vespaVersion();
// Node repo checks for !isEmpty(), so let's do that here too.
if (currentVersion.isPresent() && !currentVersion.get().isEmpty()) {
double currentVersionNumber = getVersionAsNumber(currentVersion.get());
metric.set("currentVespaVersion", currentVersionNumber, context);
}
long wantedRebootGeneration = node.status().reboot().wanted();
metric.set("wantedRebootGeneration", wantedRebootGeneration, context);
long currentRebootGeneration = node.status().reboot().current();
metric.set("currentRebootGeneration", currentRebootGeneration, context);
boolean wantToReboot = currentRebootGeneration < wantedRebootGeneration;
metric.set("wantToReboot", wantToReboot ? 1 : 0, context);
metric.set("wantToRetire", node.status().wantToRetire() ? 1 : 0, context);
metric.set("wantToDeprovision", node.status().wantToDeprovision() ? 1 : 0, context);
try {
HostStatus status = orchestrator.getNodeStatus(new HostName(node.hostname()));
boolean allowedToBeDown = status == HostStatus.ALLOWED_TO_BE_DOWN;
metric.set("allowedToBeDown", allowedToBeDown ? 1 : 0, context);
} catch (HostNameNotFoundException e) {
// Ignore
}
// TODO: Also add metric on whether some services are down on node?
}
/**
* A version 6.163.20 will be returned as a number 163.020. The major
* version can normally be inferred. As long as the micro version stays
* below 1000 these numbers sort like Version.
*/
private static double getVersionAsNumber(Version version) {
return version.getMinor() + version.getMicro() / 1000.0;
}
private Metric.Context getContextAt(String... point) {
if (point.length % 2 != 0) {
throw new IllegalArgumentException("Dimension specification comes in pairs");
}
Map<String, String> dimensions = new HashMap<>();
for (int i = 0; i < point.length; i += 2) {
dimensions.put(point[i], point[i + 1]);
}
Metric.Context context = contextMap.get(dimensions);
if (context != null) {
return context;
}
context = metric.createContext(dimensions);
contextMap.put(dimensions, context);
return context;
}
private void updateStateMetrics(List<Node> nodes) {
Map<Node.State, List<Node>> nodesByState = nodes.stream()
.collect(Collectors.groupingBy(Node::state));
// Metrics pr state
for (Node.State state : Node.State.values()) {
List<Node> nodesInState = nodesByState.getOrDefault(state, new ArrayList<>());
long size = nodesInState.stream().filter(node -> node.type() == NodeType.tenant).count();
metric.set("hostedVespa." + state.name() + "Hosts", size, null);
}
}
private void updateDockerMetrics(List<Node> nodes) {
// Capacity flavors for docker
DockerHostCapacity capacity = new DockerHostCapacity(nodes);
metric.set("hostedVespa.docker.totalCapacityCpu", capacity.getCapacityTotal().getCpu(), null);
metric.set("hostedVespa.docker.totalCapacityMem", capacity.getCapacityTotal().getMemory(), null);
metric.set("hostedVespa.docker.totalCapacityDisk", capacity.getCapacityTotal().getDisk(), null);
metric.set("hostedVespa.docker.freeCapacityCpu", capacity.getFreeCapacityTotal().getCpu(), null);
metric.set("hostedVespa.docker.freeCapacityMem", capacity.getFreeCapacityTotal().getMemory(), null);
metric.set("hostedVespa.docker.freeCapacityDisk", capacity.getFreeCapacityTotal().getDisk(), null);
List<Flavor> dockerFlavors = nodeRepository().getAvailableFlavors().getFlavors().stream()
.filter(f -> f.getType().equals(Flavor.Type.DOCKER_CONTAINER))
.collect(Collectors.toList());
for (Flavor flavor : dockerFlavors) {
Metric.Context context = getContextAt("flavor", flavor.name());
metric.set("hostedVespa.docker.freeCapacityFlavor", capacity.freeCapacityInFlavorEquivalence(flavor), context);
metric.set("hostedVespa.docker.idealHeadroomFlavor", flavor.getIdealHeadroom(), context);
metric.set("hostedVespa.docker.hostsAvailableFlavor", capacity.getNofHostsAvailableFor(flavor), context);
}
}
}
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