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/**
* This file is part of Graylog2.
*
* Graylog2 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.
*
* Graylog2 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 Graylog2. If not, see .
*/
package org.graylog2.rest.resources.system;
import com.codahale.metrics.*;
import com.codahale.metrics.annotation.Timed;
import com.google.common.collect.Lists;
import com.google.common.collect.Maps;
import com.mongodb.BasicDBObject;
import com.mongodb.DBCursor;
import com.mongodb.DBObject;
import org.apache.shiro.authz.annotation.RequiresAuthentication;
import org.apache.shiro.authz.annotation.RequiresPermissions;
import org.graylog2.database.MongoConnection;
import org.graylog2.metrics.MetricUtils;
import com.wordnik.swagger.annotations.*;
import org.graylog2.rest.resources.RestResource;
import org.graylog2.rest.resources.system.requests.MetricsReadRequest;
import org.graylog2.security.RestPermissions;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.inject.Inject;
import javax.ws.rs.*;
import javax.ws.rs.core.MediaType;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Map;
/**
* @author Lennart Koopmann
*/
@RequiresAuthentication
@Api(value = "System/Metrics", description = "Internal Graylog2 metrics")
@Path("/system/metrics")
public class MetricsResource extends RestResource {
private static final Logger LOG = LoggerFactory.getLogger(MetricsResource.class);
private final MetricRegistry metricRegistry;
private final MongoConnection mongoConnection;
@Inject
public MetricsResource(MetricRegistry metricRegistry,
MongoConnection mongoConnection) {
this.metricRegistry = metricRegistry;
this.mongoConnection = mongoConnection;
}
@GET @Timed
@RequiresPermissions(RestPermissions.METRICS_READALL)
@ApiOperation(value = "Get all metrics",
notes = "Note that this might return a huge result set.")
@Produces(MediaType.APPLICATION_JSON)
public String metrics() {
Map result = Maps.newHashMap();
result.put("metrics", metricRegistry.getMetrics());
return json(result);
}
@GET @Timed
@Path("/names")
@ApiOperation(value = "Get all metrics keys/names")
@RequiresPermissions(RestPermissions.METRICS_ALLKEYS)
@Produces(MediaType.APPLICATION_JSON)
public String metricNames() {
Map result = Maps.newHashMap();
result.put("names", metricRegistry.getNames());
return json(result);
}
@GET @Timed
@Path("/{metricName}")
@ApiOperation(value = "Get a single metric")
@ApiResponses(value = {
@ApiResponse(code = 404, message = "No such metric")
})
@Produces(MediaType.APPLICATION_JSON)
public String singleMetric(@ApiParam(name = "metricName", required = true) @PathParam("metricName") String metricName) {
checkPermission(RestPermissions.METRICS_READ, metricName);
Metric metric = metricRegistry.getMetrics().get(metricName);
if (metric == null) {
LOG.debug("I do not have a metric called [{}], returning 404.", metricName);
throw new WebApplicationException(404);
}
return json(metric);
}
@POST @Timed
@Path("/multiple")
@ApiOperation("Get the values of multiple metrics at once")
@ApiResponses(value = {
@ApiResponse(code = 400, message = "Malformed body")
})
public String multipleMetrics(@ApiParam(name = "Requested metrics", required = true) MetricsReadRequest request) {
final Map metrics = metricRegistry.getMetrics();
List