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Keeps track of node assignment in a multi-application setup.
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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.provision.maintenance;
import ai.vespa.metrics.ConfigServerMetrics;
import com.yahoo.collections.Pair;
import com.yahoo.component.Version;
import com.yahoo.config.provision.ApplicationId;
import com.yahoo.config.provision.ClusterSpec;
import com.yahoo.config.provision.NodeResources;
import com.yahoo.config.provision.NodeType;
import com.yahoo.jdisc.Metric;
import com.yahoo.vespa.applicationmodel.ApplicationInstance;
import com.yahoo.vespa.applicationmodel.HostName;
import com.yahoo.vespa.applicationmodel.ServiceInstance;
import com.yahoo.vespa.applicationmodel.ServiceStatus;
import com.yahoo.vespa.curator.stats.LatencyMetrics;
import com.yahoo.vespa.curator.stats.LockStats;
import com.yahoo.vespa.hosted.provision.Node;
import com.yahoo.vespa.hosted.provision.Node.State;
import com.yahoo.vespa.hosted.provision.NodeList;
import com.yahoo.vespa.hosted.provision.NodeRepository;
import com.yahoo.vespa.hosted.provision.node.Allocation;
import com.yahoo.vespa.hosted.provision.node.ClusterId;
import com.yahoo.vespa.hosted.provision.node.History;
import com.yahoo.vespa.hosted.provision.persistence.CacheStats;
import com.yahoo.vespa.service.monitor.ServiceModel;
import com.yahoo.vespa.service.monitor.ServiceMonitor;
import java.time.Duration;
import java.time.Instant;
import java.util.Comparator;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.Set;
import java.util.function.Function;
import java.util.function.Supplier;
import java.util.stream.Collectors;
import static com.yahoo.config.provision.NodeResources.DiskSpeed.any;
/**
* @author oyving
*/
public class MetricsReporter extends NodeRepositoryMaintainer {
private final Set> nonZeroMetrics = new HashSet<>();
private final Metric metric;
private final ServiceMonitor serviceMonitor;
private final Map, Metric.Context> contextMap = new HashMap<>();
private final Supplier pendingRedeploymentsSupplier;
MetricsReporter(NodeRepository nodeRepository,
Metric metric,
ServiceMonitor serviceMonitor,
Supplier pendingRedeploymentsSupplier,
Duration interval) {
super(nodeRepository, interval, metric);
this.metric = metric;
this.serviceMonitor = serviceMonitor;
this.pendingRedeploymentsSupplier = pendingRedeploymentsSupplier;
}
@Override
public double maintain() {
// Sort by hostname to get deterministic metric reporting order (and hopefully avoid changes
// to metric reporting time, so we get double reporting or no reporting within a minute)
NodeList nodes = nodeRepository().nodes().list().sortedBy(Comparator.comparing(Node::hostname));
ServiceModel serviceModel = serviceMonitor.getServiceModelSnapshot();
updateZoneMetrics();
updateCacheMetrics();
updateMaintenanceMetrics();
nodes.forEach(node -> updateNodeMetrics(node, serviceModel));
updateNodeCountMetrics(nodes);
updateLockMetrics();
updateContainerMetrics(nodes);
updateTenantUsageMetrics(nodes);
updateRepairTicketMetrics(nodes);
updateAllocationMetrics(nodes);
updateClusterMetrics(nodes);
updateEmptyExclusiveHosts(nodes);
return 1.0;
}
private void updateAllocationMetrics(NodeList nodes) {
Map> byCluster = nodes.stream()
.filter(node -> node.allocation().isPresent())
.filter(node -> !node.allocation().get().owner().instance().isTester())
.collect(Collectors.groupingBy(node -> new ClusterId(node.allocation().get().owner(), node.allocation().get().membership().cluster().id())));
byCluster.forEach((clusterId, allocatedNodes) -> {
int activeNodes = 0;
int nonActiveNodes = 0;
for (var node : allocatedNodes) {
if (node.state() == State.active) {
activeNodes++;
} else {
nonActiveNodes++;
}
}
double nonActiveFraction;
if (activeNodes == 0) { // Cluster has been removed
nonActiveFraction = 1;
} else {
nonActiveFraction = (double) nonActiveNodes / ((double) activeNodes + (double) nonActiveNodes);
}
Metric.Context context = getContext(dimensions(clusterId.application(), clusterId.cluster()));
metric.set(ConfigServerMetrics.NODES_ACTIVE.baseName(), activeNodes, context);
metric.set(ConfigServerMetrics.NODES_NON_ACTIVE.baseName(), nonActiveNodes, context);
metric.set(ConfigServerMetrics.NODES_NON_ACTIVE_FRACTION.baseName(), nonActiveFraction, context);
});
}
private void updateClusterMetrics(NodeList nodes) {
Map> byCluster = nodes.stream()
.filter(node -> node.type() == NodeType.tenant)
.filter(node -> node.state() == State.active)
.filter(node -> node.allocation().isPresent())
.collect(Collectors.groupingBy(node -> new ClusterId(node.allocation().get().owner(), node.allocation().get().membership().cluster().id())));
byCluster.forEach((clusterId, clusterNodes) -> {
Metric.Context context = getContext(dimensions(clusterId.application(), clusterId.cluster()));
updateExclusiveSwitchMetrics(clusterNodes, nodes, context);
updateClusterMetrics(clusterId, clusterNodes, context);
});
}
private void updateExclusiveSwitchMetrics(List clusterNodes, NodeList allNodes, Metric.Context context) {
NodeList clusterHosts = allNodes.parentsOf(NodeList.copyOf(clusterNodes));
long nodesOnExclusiveSwitch = NodeList.copyOf(clusterNodes).onExclusiveSwitch(clusterHosts).size();
double exclusiveSwitchRatio = nodesOnExclusiveSwitch / (double) clusterNodes.size();
metric.set(ConfigServerMetrics.NODES_EXCLUSIVE_SWITCH_FRACTION.baseName(), exclusiveSwitchRatio,context);
}
private void updateClusterMetrics(ClusterId clusterId, List clusterNodes, Metric.Context context) {
var cluster = nodeRepository().applications().get(clusterId.application())
.flatMap(application -> application.cluster(clusterId.cluster()));
if (cluster.isEmpty()) return;
double cost = clusterNodes.stream().mapToDouble(node -> node.resources().cost()).sum();
metric.set(ConfigServerMetrics.CLUSTER_COST.baseName(), cost, context);
metric.set(ConfigServerMetrics.CLUSTER_LOAD_IDEAL_CPU.baseName(), cluster.get().target().ideal().cpu(), context);
metric.set(ConfigServerMetrics.CLUSTER_LOAD_IDEAL_MEMORY.baseName(), cluster.get().target().ideal().memory(), context);
metric.set(ConfigServerMetrics.CLUSTER_LOAD_IDEAL_DISK.baseName(), cluster.get().target().ideal().disk(), context);
metric.set(ConfigServerMetrics.CLUSTER_LOAD_PEAK_CPU.baseName(), cluster.get().target().peak().cpu(), context);
metric.set(ConfigServerMetrics.CLUSTER_LOAD_PEAK_MEMORY.baseName(), cluster.get().target().peak().memory(), context);
metric.set(ConfigServerMetrics.CLUSTER_LOAD_PEAK_DISK.baseName(), cluster.get().target().peak().disk(), context);
}
private void updateZoneMetrics() {
metric.set(ConfigServerMetrics.ZONE_WORKING.baseName(), nodeRepository().nodes().isWorking() ? 1 : 0, null);
}
private void updateCacheMetrics() {
CacheStats nodeCacheStats = nodeRepository().database().nodeSerializerCacheStats();
metric.set(ConfigServerMetrics.CACHE_NODE_OBJECT_HIT_RATE.baseName(), nodeCacheStats.hitRate(), null);
metric.set(ConfigServerMetrics.CACHE_NODE_OBJECT_EVICTION_COUNT.baseName(), nodeCacheStats.evictionCount(), null);
metric.set(ConfigServerMetrics.CACHE_NODE_OBJECT_SIZE.baseName(), nodeCacheStats.size(), null);
CacheStats curatorCacheStats = nodeRepository().database().cacheStats();
metric.set(ConfigServerMetrics.CACHE_CURATOR_HIT_RATE.baseName(), curatorCacheStats.hitRate(), null);
metric.set(ConfigServerMetrics.CACHE_CURATOR_EVICTION_COUNT.baseName(), curatorCacheStats.evictionCount(), null);
metric.set(ConfigServerMetrics.CACHE_CURATOR_SIZE.baseName(), curatorCacheStats.size(), null);
}
private void updateMaintenanceMetrics() {
metric.set(ConfigServerMetrics.HOSTED_VESPA_PENDING_REDEPLOYMENTS.baseName(), pendingRedeploymentsSupplier.get(), null);
}
/**
* NB: Keep this metric set in sync with internal configserver metric pre-aggregation
*/
private void updateNodeMetrics(Node node, ServiceModel serviceModel) {
Metric.Context context;
Optional allocation = node.allocation();
if (allocation.isPresent()) {
ApplicationId applicationId = allocation.get().owner();
Map dimensions = new HashMap<>(dimensions(applicationId));
dimensions.put("state", node.state().name());
dimensions.put("host", node.hostname());
dimensions.put("clustertype", allocation.get().membership().cluster().type().name());
dimensions.put("clusterid", allocation.get().membership().cluster().id().value());
context = getContext(dimensions);
long wantedRestartGeneration = allocation.get().restartGeneration().wanted();
metric.set(ConfigServerMetrics.WANTED_RESTART_GENERATION.baseName(), wantedRestartGeneration, context);
long currentRestartGeneration = allocation.get().restartGeneration().current();
metric.set(ConfigServerMetrics.CURRENT_RESTART_GENERATION.baseName(), currentRestartGeneration, context);
boolean wantToRestart = currentRestartGeneration < wantedRestartGeneration;
metric.set(ConfigServerMetrics.WANT_TO_RESTART.baseName(), wantToRestart ? 1 : 0, context);
metric.set(ConfigServerMetrics.RETIRED.baseName(), allocation.get().membership().retired() ? 1 : 0, context);
Version wantedVersion = allocation.get().membership().cluster().vespaVersion();
double wantedVersionNumber = getVersionAsNumber(wantedVersion);
metric.set(ConfigServerMetrics.WANTED_VESPA_VERSION.baseName(), wantedVersionNumber, context);
Optional currentVersion = node.status().vespaVersion();
boolean converged = currentVersion.isPresent() &&
currentVersion.get().equals(wantedVersion);
metric.set(ConfigServerMetrics.WANT_TO_CHANGE_VESPA_VERSION.baseName(), converged ? 0 : 1, context);
if (node.cloudAccount().isExclave(nodeRepository().zone())) {
metric.set(ConfigServerMetrics.HAS_WIRE_GUARD_KEY.baseName(), node.wireguardPubKey().isPresent() ? 1 : 0, context);
}
} else {
context = getContext(Map.of("state", node.state().name(),
"host", node.hostname()));
}
Optional currentVersion = node.status().vespaVersion();
if (currentVersion.isPresent()) {
double currentVersionNumber = getVersionAsNumber(currentVersion.get());
metric.set(ConfigServerMetrics.CURRENT_VESPA_VERSION.baseName(), currentVersionNumber, context);
}
long wantedRebootGeneration = node.status().reboot().wanted();
metric.set(ConfigServerMetrics.WANTED_REBOOT_GENERATION.baseName(), wantedRebootGeneration, context);
long currentRebootGeneration = node.status().reboot().current();
metric.set(ConfigServerMetrics.CURRENT_REBOOT_GENERATION.baseName(), currentRebootGeneration, context);
boolean wantToReboot = currentRebootGeneration < wantedRebootGeneration;
metric.set(ConfigServerMetrics.WANT_TO_REBOOT.baseName(), wantToReboot ? 1 : 0, context);
metric.set(ConfigServerMetrics.WANT_TO_RETIRE.baseName(), node.status().wantToRetire() ? 1 : 0, context);
metric.set(ConfigServerMetrics.WANT_TO_DEPROVISION.baseName(), node.status().wantToDeprovision() ? 1 : 0, context);
metric.set(ConfigServerMetrics.FAIL_REPORT.baseName(), NodeFailer.reasonsToFailHost(node).isEmpty() ? 0 : 1, context);
HostName hostname = new HostName(node.hostname());
serviceModel.getApplication(hostname)
.map(ApplicationInstance::reference)
.map(reference -> nodeRepository().orchestrator().getHostInfo(reference, hostname))
.ifPresent(info -> {
int suspended = info.status().isSuspended() ? 1 : 0;
metric.set(ConfigServerMetrics.SUSPENDED.baseName(), suspended, context);
long suspendedSeconds = info.suspendedSince()
.map(suspendedSince -> Duration.between(suspendedSince, clock().instant()).getSeconds())
.orElse(0L);
metric.add(ConfigServerMetrics.SUSPENDED_SECONDS.baseName(), suspendedSeconds, context);
});
if (nodeRepository().zone().environment().isTest() &&
node.state() == State.active &&
node.type() == NodeType.tenant) {
node.history()
.event(History.Event.Type.activated)
.ifPresent(event -> {
var activeSeconds = Duration.between(event.at(), clock().instant()).getSeconds();
metric.add(ConfigServerMetrics.ACTIVE_SECONDS.baseName(), activeSeconds, context);
});
}
long numberOfServices;
List services = serviceModel.getServiceInstancesByHostName().get(hostname);
if (services == null) {
numberOfServices = 0;
} else {
Map servicesCount = services.stream().collect(
Collectors.groupingBy(ServiceInstance::serviceStatus, Collectors.counting()));
numberOfServices = servicesCount.values().stream().mapToLong(Long::longValue).sum();
metric.set(
ConfigServerMetrics.NUMBER_OF_SERVICES_UP.baseName(),
servicesCount.getOrDefault(ServiceStatus.UP, 0L),
context);
metric.set(
ConfigServerMetrics.NUMBER_OF_SERVICES_NOT_CHECKED.baseName(),
servicesCount.getOrDefault(ServiceStatus.NOT_CHECKED, 0L),
context);
long numberOfServicesDown = servicesCount.getOrDefault(ServiceStatus.DOWN, 0L);
metric.set(ConfigServerMetrics.NUMBER_OF_SERVICES_DOWN.baseName(), numberOfServicesDown, context);
metric.set(ConfigServerMetrics.SOME_SERVICES_DOWN.baseName(), (numberOfServicesDown > 0 ? 1 : 0), context);
metric.set(ConfigServerMetrics.NUMBER_OF_SERVICES_UNKNOWN.baseName(), servicesCount.getOrDefault(ServiceStatus.UNKNOWN, 0L), context);
boolean down = NodeHealthTracker.allDown(services);
metric.set(ConfigServerMetrics.NODE_FAILER_BAD_NODE.baseName(), (down ? 1 : 0), context);
boolean nodeDownInNodeRepo = node.history().isDown();;
metric.set(ConfigServerMetrics.DOWN_IN_NODE_REPO.baseName(), (nodeDownInNodeRepo ? 1 : 0), context);
}
metric.set(ConfigServerMetrics.NUMBER_OF_SERVICES.baseName(), numberOfServices, context);
}
private static String toApp(ApplicationId applicationId) {
return applicationId.application().value() + "." + applicationId.instance().value();
}
/**
* 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 getContext(Map dimensions) {
return contextMap.computeIfAbsent(dimensions, metric::createContext);
}
private void updateNodeCountMetrics(NodeList nodes) {
var nodesByState = nodes.nodeType(NodeType.tenant)
.asList().stream()
.collect(Collectors.groupingBy(Node::state));
var hostsByState = nodes.nodeType(NodeType.host)
.asList().stream()
.collect(Collectors.groupingBy(Node::state));
// Count per state
for (State state : State.values()) {
var nodesInState = nodesByState.getOrDefault(state, List.of());
var hostsInState = hostsByState.getOrDefault(state, List.of());
metric.set("hostedVespa." + state.name() + "Nodes", nodesInState.size(), null);
metric.set("hostedVespa." + state.name() + "Hosts", hostsInState.size(), null);
}
}
private void updateLockMetrics() {
Set> currentNonZeroMetrics = new HashSet<>();
LockStats.getGlobal().getLockMetricsByPath()
.forEach((lockPath, lockMetrics) -> {
Metric.Context context = getContext(Map.of("lockPath", lockPath));
LatencyMetrics acquireLatencyMetrics = lockMetrics.getAndResetAcquireLatencyMetrics();
setNonZero(ConfigServerMetrics.LOCK_ATTEMPT_ACQUIRE_MAX_ACTIVE_LATENCY.baseName(), acquireLatencyMetrics.maxActiveLatencySeconds(), context, currentNonZeroMetrics);
setNonZero(ConfigServerMetrics.LOCK_ATTEMPT_ACQUIRE_HZ.baseName(), acquireLatencyMetrics.startHz(), context, currentNonZeroMetrics);
setNonZero(ConfigServerMetrics.LOCK_ATTEMPT_ACQUIRE_LOAD.baseName(), acquireLatencyMetrics.load(), context, currentNonZeroMetrics);
LatencyMetrics lockedLatencyMetrics = lockMetrics.getAndResetLockedLatencyMetrics();
setNonZero(ConfigServerMetrics.LOCK_ATTEMPT_LOCKED_LATENCY.baseName(), lockedLatencyMetrics.maxLatencySeconds(), context, currentNonZeroMetrics);
lockedLatencyMetrics.loadByThread().forEach((name, load) -> {
setNonZero(ConfigServerMetrics.LOCK_ATTEMPT_LOCKED_LOAD.baseName(), load, getContext(Map.of("lockPath", lockPath, "thread", name)), currentNonZeroMetrics);
});
setNonZero(ConfigServerMetrics.LOCK_ATTEMPT_ACQUIRE_TIMED_OUT.baseName(), lockMetrics.getAndResetAcquireTimedOutCount(), context, currentNonZeroMetrics);
setNonZero(ConfigServerMetrics.LOCK_ATTEMPT_DEADLOCK.baseName(), lockMetrics.getAndResetDeadlockCount(), context, currentNonZeroMetrics);
// bucket for various rare errors - to reduce #metrics
setNonZero(ConfigServerMetrics.LOCK_ATTEMPT_ERRORS.baseName(),
lockMetrics.getAndResetAcquireFailedCount() +
lockMetrics.getAndResetReleaseFailedCount() +
lockMetrics.getAndResetNakedReleaseCount() +
lockMetrics.getAndResetAcquireWithoutReleaseCount() +
lockMetrics.getAndResetForeignReleaseCount(),
context,
currentNonZeroMetrics);
});
// Need to set the metric to 0 after it has been set to non-zero, to avoid carrying a non-zero 'last' from earlier periods.
nonZeroMetrics.removeIf(currentNonZeroMetrics::contains); // Retain those that turned zero for this period.
nonZeroMetrics.forEach(metricKey -> metric.set(metricKey.getSecond(), 0, metricKey.getFirst()));
nonZeroMetrics.clear();
nonZeroMetrics.addAll(currentNonZeroMetrics);
}
private void setNonZero(String key, Number value, Metric.Context context, Set> nonZeroMetrics) {
var metricKey = new Pair<>(context, key);
if (Double.compare(value.doubleValue(), 0.0) != 0) {
metric.set(key, value, context);
nonZeroMetrics.add(metricKey);
}
}
private void updateContainerMetrics(NodeList nodes) {
NodeResources totalCapacity = getCapacityTotal(nodes);
metric.set(ConfigServerMetrics.HOSTED_VESPA_DOCKER_TOTAL_CAPACITY_CPU.baseName(), totalCapacity.vcpu(), null);
metric.set(ConfigServerMetrics.HOSTED_VESPA_DOCKER_TOTAL_CAPACITY_MEM.baseName(), totalCapacity.memoryGiB(), null);
metric.set(ConfigServerMetrics.HOSTED_VESPA_DOCKER_TOTAL_CAPACITY_DISK.baseName(), totalCapacity.diskGb(), null);
NodeResources totalFreeCapacity = getFreeCapacityTotal(nodes);
metric.set(ConfigServerMetrics.HOSTED_VESPA_DOCKER_FREE_CAPACITY_CPU.baseName(), totalFreeCapacity.vcpu(), null);
metric.set(ConfigServerMetrics.HOSTED_VESPA_DOCKER_FREE_CAPACITY_MEM.baseName(), totalFreeCapacity.memoryGiB(), null);
metric.set(ConfigServerMetrics.HOSTED_VESPA_DOCKER_FREE_CAPACITY_DISK.baseName(), totalFreeCapacity.diskGb(), null);
}
private void updateTenantUsageMetrics(NodeList nodes) {
nodes.nodeType(NodeType.tenant).stream()
.filter(node -> node.allocation().isPresent())
.collect(Collectors.groupingBy(node -> node.allocation().get().owner()))
.forEach(
(applicationId, applicationNodes) -> {
var allocatedCapacity = applicationNodes.stream()
.map(node -> node.allocation().get().requestedResources().justNumbers())
.reduce(new NodeResources(0, 0, 0, 0, any).justNumbers(), NodeResources::add);
var context = getContext(dimensions(applicationId));
metric.set(ConfigServerMetrics.HOSTED_VESPA_DOCKER_ALLOCATED_CAPACITY_CPU.baseName(), allocatedCapacity.vcpu(), context);
metric.set(ConfigServerMetrics.HOSTED_VESPA_DOCKER_ALLOCATED_CAPACITY_MEM.baseName(), allocatedCapacity.memoryGiB(), context);
metric.set(ConfigServerMetrics.HOSTED_VESPA_DOCKER_ALLOCATED_CAPACITY_DISK.baseName(), allocatedCapacity.diskGb(), context);
}
);
}
private void updateRepairTicketMetrics(NodeList nodes) {
nodes.nodeType(NodeType.host).stream()
.map(node -> node.reports().getReport("repairTicket"))
.flatMap(Optional::stream)
.map(report -> report.getInspector().field("status").asString())
.collect(Collectors.groupingBy(Function.identity(), Collectors.counting()))
.forEach((status, number) -> metric.set(ConfigServerMetrics.HOSTED_VESPA_BREAKFIXED_HOSTS.baseName(), number, getContext(Map.of("status", status))));
}
private void updateEmptyExclusiveHosts(NodeList nodes) {
Instant now = nodeRepository().clock().instant();
Instant tenMinutesAgo = now.minus(Duration.ofMinutes(10));
int emptyHosts = nodes.parents().state(State.active)
.matching(node -> (node.type() != NodeType.host && node.type().isHost()) ||
node.exclusiveToApplicationId().isPresent())
.matching(host -> host.history().hasEventBefore(History.Event.Type.activated,
tenMinutesAgo))
.matching(host -> nodes.childrenOf(host).isEmpty())
.matching(host -> host.hostEmptyAt()
.map(time -> time.isBefore(tenMinutesAgo))
.orElse(true))
.size();
metric.set(ConfigServerMetrics.NODES_EMPTY_EXCLUSIVE.baseName(), emptyHosts, null);
}
static Map dimensions(ApplicationId application, ClusterSpec.Id cluster) {
Map dimensions = new HashMap<>(dimensions(application));
dimensions.put("clusterid", cluster.value());
return dimensions;
}
private static Map dimensions(ApplicationId application) {
return Map.of("tenantName", application.tenant().value(),
"applicationId", application.serializedForm().replace(':', '.'),
"app", toApp(application));
}
private static NodeResources getCapacityTotal(NodeList nodes) {
return nodes.hosts().state(State.active).asList().stream()
.map(host -> host.flavor().resources())
.map(NodeResources::justNumbers)
.reduce(new NodeResources(0, 0, 0, 0, any).justNumbers(), NodeResources::add);
}
private static NodeResources getFreeCapacityTotal(NodeList nodes) {
return nodes.hosts().state(State.active).asList().stream()
.map(n -> freeCapacityOf(nodes, n))
.map(NodeResources::justNumbers)
.reduce(new NodeResources(0, 0, 0, 0, any).justNumbers(), NodeResources::add);
}
private static NodeResources freeCapacityOf(NodeList nodes, Node host) {
return nodes.childrenOf(host).asList().stream()
.map(node -> node.flavor().resources().justNumbers())
.reduce(host.flavor().resources().justNumbers(), NodeResources::subtract);
}
}