org.graylog.events.notifications.EventNotificationService Maven / Gradle / Ivy
/**
* This file is part of Graylog.
*
* Graylog is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Graylog 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
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Graylog. If not, see .
*/
package org.graylog.events.notifications;
import com.google.common.collect.ImmutableList;
import org.graylog.events.configuration.EventsConfigurationProvider;
import org.graylog2.database.NotFoundException;
import org.graylog2.plugin.MessageSummary;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.inject.Inject;
public class EventNotificationService {
private static final Logger LOG = LoggerFactory.getLogger(EventNotificationService.class);
private final EventBacklogService eventBacklogService;
private final EventsConfigurationProvider configurationProvider;
@Inject
public EventNotificationService(EventBacklogService eventBacklogService,
EventsConfigurationProvider configurationProvider) {
this.eventBacklogService = eventBacklogService;
this.configurationProvider = configurationProvider;
}
public ImmutableList getBacklogForEvent(EventNotificationContext ctx) {
final ImmutableList backlog;
try {
if (ctx.eventDefinition().isPresent()) {
final long backlogSize = ctx.eventDefinition().get().notificationSettings().backlogSize();
if (backlogSize <= 0) {
return ImmutableList.of();
}
backlog = eventBacklogService.getMessagesForEvent(ctx.event(), backlogSize);
} else {
backlog = eventBacklogService.getMessagesForEvent(ctx.event(), configurationProvider.get().eventNotificationsBacklog());
}
} catch (NotFoundException e) {
LOG.error("Failed to fetch backlog for event {}", ctx.event().id());
return ImmutableList.of();
}
return backlog;
}
}