org.graylog2.shared.rest.resources.system.ThroughputResource 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.graylog2.shared.rest.resources.system;
import com.codahale.metrics.Gauge;
import com.codahale.metrics.MetricRegistry;
import com.codahale.metrics.annotation.Timed;
import com.google.common.collect.Iterables;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import org.apache.shiro.authz.annotation.RequiresAuthentication;
import org.apache.shiro.authz.annotation.RequiresPermissions;
import org.graylog2.plugin.GlobalMetricNames;
import org.graylog2.rest.models.system.responses.Throughput;
import org.graylog2.shared.metrics.MetricUtils;
import org.graylog2.shared.rest.resources.RestResource;
import org.graylog2.shared.security.RestPermissions;
import javax.inject.Inject;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
import java.util.SortedMap;
@RequiresAuthentication
@Api(value = "System/Throughput", description = "Message throughput of this node")
@Path("/system/throughput")
public class ThroughputResource extends RestResource {
private final MetricRegistry metricRegistry;
@Inject
public ThroughputResource(MetricRegistry metricRegistry) {
this.metricRegistry = metricRegistry;
}
@GET
@Timed
@RequiresPermissions(RestPermissions.THROUGHPUT_READ)
@ApiOperation(value = "Current throughput of this node in messages per second")
@Produces(MediaType.APPLICATION_JSON)
public Throughput total() {
final SortedMap gauges = metricRegistry.getGauges(MetricUtils.filterSingleMetric(
GlobalMetricNames.OUTPUT_THROUGHPUT_RATE));
final Gauge gauge = Iterables.getOnlyElement(gauges.values(), null);
if (gauge == null || !(gauge.getValue() instanceof Number)) {
return Throughput.create(0);
} else {
return Throughput.create(((Number) gauge.getValue()).longValue());
}
}
}