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AlertConfigurationWriter.java
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AlertConfigurationWriter.java
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/*
* Copyright 2021 YugaByte, Inc. and Contributors
*
* Licensed under the Polyform Free Trial License 1.0.0 (the "License"); you
* may not use this file except in compliance with the License. You
* may obtain a copy of the License at
*
* http://github.com/YugaByte/yugabyte-db/blob/master/licenses/POLYFORM-FREE-TRIAL-LICENSE-1.0.0.txt
*/
package com.yugabyte.yw.common.alerts;
import static com.yugabyte.yw.common.metrics.MetricService.buildMetricTemplate;
import akka.actor.ActorSystem;
import com.google.common.annotations.VisibleForTesting;
import com.yugabyte.yw.common.SwamperHelper;
import com.yugabyte.yw.common.config.RuntimeConfigFactory;
import com.yugabyte.yw.common.metrics.MetricService;
import com.yugabyte.yw.metrics.MetricQueryHelper;
import com.yugabyte.yw.models.AlertConfiguration;
import com.yugabyte.yw.models.AlertDefinition;
import com.yugabyte.yw.models.MaintenanceWindow;
import com.yugabyte.yw.models.MaintenanceWindow.State;
import com.yugabyte.yw.models.filters.AlertConfigurationFilter;
import com.yugabyte.yw.models.filters.AlertDefinitionFilter;
import com.yugabyte.yw.models.filters.MaintenanceWindowFilter;
import com.yugabyte.yw.models.helpers.PlatformMetrics;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.UUID;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.stream.Collectors;
import javax.inject.Inject;
import javax.inject.Singleton;
import lombok.extern.slf4j.Slf4j;
import scala.concurrent.ExecutionContext;
import scala.concurrent.duration.Duration;
@Singleton
@Slf4j
public class AlertConfigurationWriter {
private static final int MIN_CONFIG_SYNC_INTERVAL_SEC = 15;
@VisibleForTesting
static final String CONFIG_SYNC_INTERVAL_PARAM = "yb.alert.config_sync_interval_sec";
private final AtomicBoolean running = new AtomicBoolean(false);
private final AtomicBoolean requiresReload = new AtomicBoolean(true);
private final AtomicBoolean requiresRecordingRulesWrite = new AtomicBoolean(true);
private final ActorSystem actorSystem;
private final ExecutionContext executionContext;
private final MetricService metricService;
private final AlertDefinitionService alertDefinitionService;
private final AlertConfigurationService alertConfigurationService;
private final SwamperHelper swamperHelper;
private final MetricQueryHelper metricQueryHelper;
private final RuntimeConfigFactory configFactory;
private final MaintenanceService maintenanceService;
@Inject
public AlertConfigurationWriter(
ExecutionContext executionContext,
ActorSystem actorSystem,
MetricService metricService,
AlertDefinitionService alertDefinitionService,
AlertConfigurationService alertConfigurationService,
SwamperHelper swamperHelper,
MetricQueryHelper metricQueryHelper,
RuntimeConfigFactory configFactory,
MaintenanceService maintenanceService) {
this.actorSystem = actorSystem;
this.executionContext = executionContext;
this.metricService = metricService;
this.alertDefinitionService = alertDefinitionService;
this.alertConfigurationService = alertConfigurationService;
this.swamperHelper = swamperHelper;
this.metricQueryHelper = metricQueryHelper;
this.configFactory = configFactory;
this.maintenanceService = maintenanceService;
}
public void start() {
int configSyncPeriodSec = configFactory.globalRuntimeConf().getInt(CONFIG_SYNC_INTERVAL_PARAM);
if (configSyncPeriodSec < MIN_CONFIG_SYNC_INTERVAL_SEC) {
log.warn(
"Alert config sync interval in runtime config is set to {},"
+ " which less than {} seconds. Using minimal value",
configSyncPeriodSec,
MIN_CONFIG_SYNC_INTERVAL_SEC);
configSyncPeriodSec = MIN_CONFIG_SYNC_INTERVAL_SEC;
}
this.actorSystem
.scheduler()
.schedule(
Duration.Zero(),
Duration.create(configSyncPeriodSec, TimeUnit.SECONDS),
this::process,
this.executionContext);
}
public void scheduleDefinitionSync(UUID definitionUuid) {
this.actorSystem.dispatcher().execute(() -> syncDefinition(definitionUuid));
}
private SyncResult syncDefinition(UUID definitionUuid) {
try {
AlertDefinition definition = alertDefinitionService.get(definitionUuid);
AlertConfiguration configuration =
definition != null
? alertConfigurationService.get(definition.getConfigurationUUID())
: null;
if (definition == null
|| !definition.isActive()
|| configuration == null
|| !configuration.isActive()) {
swamperHelper.removeAlertDefinition(definitionUuid);
requiresReload.set(true);
if (definition != null) {
// Don't want to retry inactive definitions.
definition.setConfigWritten(true);
alertDefinitionService.save(definition);
}
return SyncResult.REMOVED;
}
if (definition.isConfigWritten()) {
log.info("Alert definition {} has config in sync", definitionUuid);
return SyncResult.IN_SYNC;
}
swamperHelper.writeAlertDefinition(configuration, definition);
definition.setConfigWritten(true);
alertDefinitionService.save(definition);
requiresReload.set(true);
return SyncResult.SYNCED;
} catch (Exception e) {
log.error("Error syncing alert definition " + definitionUuid + " config", e);
return SyncResult.FAILURE;
}
}
@VisibleForTesting
void process() {
if (!running.compareAndSet(false, true)) {
log.info("Previous run of alert configuration writer is still underway");
return;
}
try {
applyMaintenanceWindows();
writeRecordingRules();
syncDefinitions();
} finally {
running.set(false);
}
}
private void applyMaintenanceWindows() {
try {
MaintenanceWindowFilter filter =
MaintenanceWindowFilter.builder().state(State.ACTIVE).build();
List<MaintenanceWindow> activeWindows = maintenanceService.list(filter);
List<MaintenanceWindow> appliedWindows = new ArrayList<>();
Map<UUID, Set<UUID>> maintenanceWindowToAlertConfigs = new HashMap<>();
for (MaintenanceWindow window : activeWindows) {
AlertConfigurationFilter alertConfigurationFilter =
window
.getAlertConfigurationFilter()
.toFilter()
.toBuilder()
.customerUuid(window.getCustomerUUID())
.build();
List<AlertConfiguration> configurations =
alertConfigurationService.list(alertConfigurationFilter);
List<AlertConfiguration> toSave =
configurations
.stream()
.filter(
configuration ->
!configuration.getMaintenanceWindowUuidsSet().contains(window.getUuid())
|| !window.isAppliedToAlertConfigurations())
.map(configuration -> configuration.addMaintenanceWindowUuid(window.getUuid()))
.collect(Collectors.toList());
alertConfigurationService.save(toSave);
maintenanceWindowToAlertConfigs.put(
window.getUuid(),
configurations.stream().map(AlertConfiguration::getUuid).collect(Collectors.toSet()));
if (!window.isAppliedToAlertConfigurations()) {
window.setAppliedToAlertConfigurations(true);
appliedWindows.add(window);
}
}
maintenanceService.save(appliedWindows);
List<AlertConfiguration> toUnsuspend = new ArrayList<>();
AlertConfigurationFilter suspendedFilter =
AlertConfigurationFilter.builder().suspended(true).build();
alertConfigurationService.process(
suspendedFilter,
configuration -> {
List<UUID> currentWindows =
configuration.getMaintenanceWindowUuidsSet() != null
? new ArrayList<>(configuration.getMaintenanceWindowUuidsSet())
: Collections.emptyList();
boolean changed = false;
for (UUID window : currentWindows) {
Set<UUID> affectedConfigs =
maintenanceWindowToAlertConfigs.getOrDefault(window, Collections.emptySet());
if (!affectedConfigs.contains(configuration.getUuid())) {
configuration.removeMaintenanceWindowUuid(window);
changed = true;
}
}
if (changed) {
toUnsuspend.add(configuration);
}
});
alertConfigurationService.save(toUnsuspend);
metricService.setOkStatusMetric(
buildMetricTemplate(PlatformMetrics.ALERT_MAINTENANCE_WINDOW_PROCESSOR_STATUS));
} catch (Exception e) {
metricService.setFailureStatusMetric(
buildMetricTemplate(PlatformMetrics.ALERT_MAINTENANCE_WINDOW_PROCESSOR_STATUS));
log.error("Error processing maintenance windows:", e);
}
}
private void writeRecordingRules() {
try {
if (requiresRecordingRulesWrite.get()) {
swamperHelper.writeRecordingRules();
if (metricQueryHelper.isPrometheusManagementEnabled()) {
metricQueryHelper.postManagementCommand(MetricQueryHelper.MANAGEMENT_COMMAND_RELOAD);
}
requiresRecordingRulesWrite.compareAndSet(true, false);
}
} catch (Exception e) {
log.error("Error syncing metric recording rules", e);
}
}
private void syncDefinitions() {
try {
AlertDefinitionFilter filter = AlertDefinitionFilter.builder().configWritten(false).build();
List<SyncResult> results = new ArrayList<>();
alertDefinitionService.process(
filter, definition -> results.add(syncDefinition(definition.getUuid())));
List<UUID> configUuids = swamperHelper.getAlertDefinitionConfigUuids();
Set<UUID> definitionUuids =
new HashSet<>(alertDefinitionService.listIds(AlertDefinitionFilter.builder().build()));
results.addAll(
configUuids
.stream()
.filter(uuid -> !definitionUuids.contains(uuid))
.map(this::syncDefinition)
.collect(Collectors.toList()));
metricService.setMetric(
buildMetricTemplate(PlatformMetrics.ALERT_CONFIG_SYNC_FAILED),
results.stream().filter(result -> result == SyncResult.FAILURE).count());
metricService.setMetric(
buildMetricTemplate(PlatformMetrics.ALERT_CONFIG_WRITTEN),
results.stream().filter(result -> result == SyncResult.SYNCED).count());
metricService.setMetric(
buildMetricTemplate(PlatformMetrics.ALERT_CONFIG_REMOVED),
results.stream().filter(result -> result == SyncResult.REMOVED).count());
if (requiresReload.get()) {
if (metricQueryHelper.isPrometheusManagementEnabled()) {
metricQueryHelper.postManagementCommand(MetricQueryHelper.MANAGEMENT_COMMAND_RELOAD);
}
requiresReload.compareAndSet(true, false);
}
metricService.setOkStatusMetric(
buildMetricTemplate(PlatformMetrics.ALERT_CONFIG_WRITER_STATUS));
} catch (Exception e) {
metricService.setFailureStatusMetric(
buildMetricTemplate(PlatformMetrics.ALERT_CONFIG_WRITER_STATUS));
log.error("Error syncing alert definition configs", e);
}
}
private enum SyncResult {
IN_SYNC,
SYNCED,
REMOVED,
FAILURE
}
}