org.graylog.plugins.map.geoip.GeoIpDbFileChangeMonitorService Maven / Gradle / Ivy
/*
* Copyright (C) 2020 Graylog, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* .
*/
package org.graylog.plugins.map.geoip;
import com.codahale.metrics.Timer;
import com.codahale.metrics.UniformReservoir;
import com.google.common.eventbus.EventBus;
import com.google.common.eventbus.Subscribe;
import com.google.common.util.concurrent.AbstractIdleService;
import org.graylog.plugins.map.config.DatabaseType;
import org.graylog.plugins.map.config.DatabaseVendorType;
import org.graylog.plugins.map.config.GeoIpResolverConfig;
import org.graylog.plugins.map.config.S3DownloadException;
import org.graylog.plugins.map.config.S3GeoIpFileService;
import org.graylog2.cluster.ClusterConfigChangedEvent;
import org.graylog2.notifications.Notification;
import org.graylog2.notifications.NotificationService;
import org.graylog2.plugin.cluster.ClusterConfigService;
import org.graylog2.plugin.utilities.FileInfo;
import org.graylog2.plugin.validate.ConfigValidationException;
import org.graylog2.rest.resources.system.GeoIpResolverConfigValidator;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.inject.Inject;
import javax.inject.Named;
import javax.inject.Singleton;
import java.io.IOException;
import java.nio.file.Paths;
import java.time.Duration;
import java.util.EnumMap;
import java.util.Map;
import java.util.Objects;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.ScheduledFuture;
import java.util.concurrent.TimeUnit;
/**
* A service to check whether the ASN and City MaxMind/IPInfo database files have changed, as well as whether the configuration has changed.
*
*
* If the database files have changed, a {@link GeoIpDbFileChangedEvent} is posted, to which {@link org.graylog.plugins.map.geoip.processor.GeoIpProcessor} subscribes and reloads the {@link GeoIpResolverEngine}.
*
*
*
* This service also subscribes to {@link ClusterConfigChangedEvent} to update the database files to be monitored, as well as to update the scheduled task ({@link #refreshDatabases()}) which checks for file changes.
*
*/
@Singleton
public final class GeoIpDbFileChangeMonitorService extends AbstractIdleService {
private static final Logger LOG = LoggerFactory.getLogger(GeoIpDbFileChangeMonitorService.class.getSimpleName());
private ScheduledFuture refreshTask;
private final ScheduledExecutorService scheduler;
private final GeoIpResolverConfigValidator geoIpResolverConfigValidator;
private final S3GeoIpFileService s3GeoIpFileService;
private final NotificationService notificationService;
private final ClusterConfigService clusterConfigService;
private final EventBus eventBus;
private Duration dbRefreshInterval = Duration.ZERO;
private FileInfo cityDbFileInfo = FileInfo.empty();
private FileInfo asnDbFileInfo = FileInfo.empty();
private GeoIpResolverConfig config;
@Inject
public GeoIpDbFileChangeMonitorService(@Named("daemonScheduler") ScheduledExecutorService scheduler,
EventBus eventBus,
ClusterConfigService clusterConfigService,
GeoIpVendorResolverService geoIpVendorResolverService,
S3GeoIpFileService s3GeoIpFileService,
NotificationService notificationService) {
this.scheduler = Objects.requireNonNull(scheduler);
this.eventBus = Objects.requireNonNull(eventBus);
this.s3GeoIpFileService = Objects.requireNonNull(s3GeoIpFileService);
this.clusterConfigService = Objects.requireNonNull(clusterConfigService);
this.geoIpResolverConfigValidator = new GeoIpResolverConfigValidator(geoIpVendorResolverService, s3GeoIpFileService, clusterConfigService);
this.notificationService = notificationService;
}
@Subscribe
@SuppressWarnings("unused")
public void onClusterConfigChanged(ClusterConfigChangedEvent event) {
if (GeoIpResolverConfig.class.getCanonicalName().equals(event.type())) {
scheduler.schedule(this::updateConfiguration, 0, TimeUnit.SECONDS);
}
}
@Override
protected void startUp() throws Exception {
eventBus.register(this);
updateConfiguration();
}
@Override
protected void shutDown() throws Exception {
eventBus.unregister(this);
}
private void refreshDatabases() {
LOG.debug("Starting GeoIP database refresh");
Map changes = checkForChanges();
if (changes.isEmpty()) {
LOG.debug("GeoIP Database files have not changed--will not refresh");
} else {
GeoIpDbFileChangedEvent event = GeoIpDbFileChangedEvent.create();
eventBus.post(event);
}
}
private Map checkForChanges() {
if (config == null) {
config = getCurrentConfig();
}
Map changes = new EnumMap<>(DatabaseType.class);
// If using S3 for database file storage, check to see if the files are new
if (config.useS3() && s3GeoIpFileService.fileRefreshRequired(config)) {
try {
// Download the new files to a temporary location to be validated
LOG.debug("Pulling DB files from S3");
s3GeoIpFileService.downloadFilesToTempLocation(config);
GeoIpResolverConfig tempConfig = config.toBuilder()
.cityDbPath(s3GeoIpFileService.getTempCityFile())
.asnDbPath(config.asnDbPath().isEmpty() ? "" : s3GeoIpFileService.getTempAsnFile())
.build();
Timer timer = new Timer(new UniformReservoir());
geoIpResolverConfigValidator.validateGeoIpLocationResolver(tempConfig, timer);
geoIpResolverConfigValidator.validateGeoIpAsnResolver(tempConfig, timer);
// Now that the new files have passed validation, move them to the active file location
s3GeoIpFileService.moveTempFilesToActive();
LOG.debug("Pulled new files from S3");
} catch (IllegalArgumentException | IllegalStateException validationError) {
String message = "Geo Processor DB files from S3 failed validation. Upload valid files to S3. Leaving old files in place on disk.";
sendFailedSyncNotification(message);
LOG.error(message);
s3GeoIpFileService.cleanupTempFiles();
return changes;
} catch (S3DownloadException | IOException e) {
String message = "Failed to download Geo Processor DB files from S3. Unable to refresh. Leaving old files in place on disk.";
sendFailedSyncNotification(message);
LOG.error(message);
return changes;
}
}
FileInfo.Change cityDbChange = cityDbFileInfo.checkForChange();
FileInfo.Change asnDbChange = asnDbFileInfo.checkForChange();
DatabaseVendorType vendorType = config.databaseVendorType();
if (cityDbChange.isChanged()) {
changes.put(vendorType.getCityDbType(), cityDbChange);
cityDbFileInfo = cityDbChange.fileInfo();
}
if (asnDbChange.isChanged()) {
changes.put(vendorType.getAsnDbType(), asnDbChange);
asnDbFileInfo = asnDbChange.fileInfo();
}
return changes;
}
private void updateConfiguration() {
try {
config = getCurrentConfig();
if (config.enabled()) {
reScheduleRefreshIfNeeded();
String asnFile = config.asnDbPath();
String cityFile = config.cityDbPath();
if (config.useS3()) {
cityFile = s3GeoIpFileService.getActiveCityFile();
asnFile = s3GeoIpFileService.getActiveAsnFile();
if (s3GeoIpFileService.fileRefreshRequired(config)) {
try {
// This should only be true in multi-Graylog-node environments if the processor config is
// changed on a different Graylog node. The files may not yet exist on-disk on this node and
// will need to be downloaded first. The files have already been validated on the original node.
if (s3GeoIpFileService.fileRefreshRequired(config)) {
s3GeoIpFileService.downloadFilesToTempLocation(config);
s3GeoIpFileService.moveTempFilesToActive();
}
} catch (S3DownloadException | IOException e) {
String commonMessage = "Failed to pull new Geo-Location Processor database files from S3.";
sendFailedSyncNotification(commonMessage + " Geo-Location Processor may not be functional on all nodes.");
LOG.error("{} Geo-Location Processor will not be functional on this node.", commonMessage);
return;
}
}
}
geoIpResolverConfigValidator.validate(config);
this.cityDbFileInfo = getDbFileInfo(cityFile);
this.asnDbFileInfo = getDbFileInfo(asnFile);
} else {
LOG.debug("GeoIP Processor is disabled. Will not schedule GeoIP database file change monitor");
cancelScheduledRefreshTask();
// Set interval to ZERO to allow rescheduling when enabled again, even if interval is not changed.
dbRefreshInterval = Duration.ZERO;
}
} catch (ConfigValidationException | IllegalArgumentException | IllegalStateException e) {
LOG.error("Error validating GeoIP Database files. {}", e.getMessage(), e);
}
}
private void cancelScheduledRefreshTask() {
if (refreshTask != null) {
boolean canceled = refreshTask.cancel(true);
if (canceled) {
LOG.debug("The GeoIP database file change monitor was running. It has been cancelled");
refreshTask = null;
} else {
LOG.warn("The GeoIP database file change monitor was running and failed to stop it");
}
}
}
private void reScheduleRefreshIfNeeded() {
if (!dbRefreshInterval.equals(config.refreshIntervalAsDuration())) {
boolean reschedule = refreshTask == null || refreshTask.cancel(true);
if (reschedule) {
this.dbRefreshInterval = config.refreshIntervalAsDuration();
scheduleDbRefresh();
} else {
LOG.warn("Failed to Cancel existing GeoIp Database Refresh Task. Will not update refresh interval.");
}
}
}
private FileInfo getDbFileInfo(String path) {
try {
return FileInfo.forPath(Paths.get(path));
} catch (Exception e) {
return FileInfo.empty();
}
}
private void scheduleDbRefresh() {
try {
long millis = dbRefreshInterval.toMillis();
refreshTask = scheduler.scheduleAtFixedRate(this::refreshDatabases, millis, millis, TimeUnit.MILLISECONDS);
LOG.debug("Scheduled GeoIP database refresh every '{}' Milliseconds", millis);
} catch (Exception e) {
LOG.error("Error scheduling GeoIP database refresh job. {}", e.getMessage(), e);
}
}
private GeoIpResolverConfig getCurrentConfig() {
return clusterConfigService.getOrDefault(GeoIpResolverConfig.class,
GeoIpResolverConfig.defaultConfig());
}
private void sendFailedSyncNotification(String description) {
final Notification notification = notificationService.buildNow()
.addType(Notification.Type.GENERIC)
.addSeverity(Notification.Severity.NORMAL)
.addDetail("title", "Geo-Location Processor S3 Sync Failure")
.addDetail("description", description);
notificationService.publishIfFirst(notification);
}
}
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