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/**
* 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.rest.resources.system;
import com.codahale.metrics.Metric;
import com.codahale.metrics.MetricRegistry;
import com.codahale.metrics.annotation.Timed;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.google.common.collect.ImmutableMap;
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 com.wordnik.swagger.annotations.Api;
import com.wordnik.swagger.annotations.ApiOperation;
import com.wordnik.swagger.annotations.ApiParam;
import com.wordnik.swagger.annotations.ApiResponse;
import com.wordnik.swagger.annotations.ApiResponses;
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 org.graylog2.shared.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.validation.Valid;
import javax.validation.constraints.NotNull;
import javax.ws.rs.DefaultValue;
import javax.ws.rs.GET;
import javax.ws.rs.InternalServerErrorException;
import javax.ws.rs.NotFoundException;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.QueryParam;
import javax.ws.rs.core.MediaType;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Map;
import java.util.SortedSet;
@RequiresAuthentication
@Api(value = "System/Metrics", description = "Internal Graylog 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 MetricRegistry metrics() {
return metricRegistry;
}
@GET
@Timed
@Path("/names")
@ApiOperation(value = "Get all metrics keys/names")
@RequiresPermissions(RestPermissions.METRICS_ALLKEYS)
@Produces(MediaType.APPLICATION_JSON)
public Map> metricNames() {
return ImmutableMap.of("names", metricRegistry.getNames());
}
@GET
@Timed
@Path("/{metricName}")
@ApiOperation(value = "Get a single metric")
@ApiResponses(value = {
@ApiResponse(code = 404, message = "No such metric")
})
@Produces(MediaType.APPLICATION_JSON)
public Metric singleMetric(@ApiParam(name = "metricName", required = true)
@PathParam("metricName") String metricName) {
checkPermission(RestPermissions.METRICS_READ, metricName);
final Metric metric = metricRegistry.getMetrics().get(metricName);
if (metric == null) {
final String msg = "I do not have a metric called [" + metricName + "].";
LOG.debug(msg);
throw new NotFoundException(msg);
}
return 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)
@Valid @NotNull MetricsReadRequest request) {
final Map metrics = metricRegistry.getMetrics();
final List> metricsList = Lists.newArrayList();
for (String name : request.metrics()) {
if (!isPermitted(RestPermissions.METRICS_READ, name)) {
continue;
}
final Metric metric = metrics.get(name);
if (metric != null) {
metricsList.add(MetricUtils.map(name, metric));
}
}
return json(ImmutableMap.of(
"metrics", metricsList,
"total", metricsList.size()));
}
@GET
@Timed
@Path("/namespace/{namespace}")
@ApiOperation(value = "Get all metrics of a namespace")
@ApiResponses(value = {
@ApiResponse(code = 404, message = "No such metric namespace")
})
@Produces(MediaType.APPLICATION_JSON)
public String byNamespace(@ApiParam(name = "namespace", required = true)
@PathParam("namespace") String namespace) {
final List> metrics = Lists.newArrayList();
for (Map.Entry e : metricRegistry.getMetrics().entrySet()) {
final String metricName = e.getKey();
if (metricName.startsWith(namespace) && isPermitted(RestPermissions.METRICS_READ, metricName)) {
try {
final Metric metric = e.getValue();
metrics.add(MetricUtils.map(metricName, metric));
} catch (Exception ex) {
LOG.warn("Could not read metric in namespace list.", ex);
}
}
}
if (metrics.isEmpty()) {
final String msg = "No metrics with namespace [" + namespace + "] found.";
LOG.debug(msg);
throw new NotFoundException(msg);
}
return json(ImmutableMap.of(
"metrics", metrics,
"total", metrics.size()));
}
enum MetricType {
GAUGE,
COUNTER,
HISTOGRAM,
METER,
TIMER
}
@GET
@Timed
@Path("/{metricName}/history")
@ApiOperation(value = "Get history of a single metric", notes = "The maximum retention time is currently only 5 minutes.")
public String historicSingleMetric(
@ApiParam(name = "metricName", required = true)
@PathParam("metricName") String metricName,
@ApiParam(name = "after", value = "Only values for after this UTC timestamp (1970 epoch)")
@QueryParam("after") @DefaultValue("-1") long after
) {
checkPermission(RestPermissions.METRICS_READHISTORY, metricName);
BasicDBObject andQuery = new BasicDBObject();
final List obj = new ArrayList();
obj.add(new BasicDBObject("name", metricName));
if (after != -1) {
obj.add(new BasicDBObject("$gt", new BasicDBObject("$gt", new Date(after))));
}
andQuery.put("$and", obj);
final DBCursor cursor = mongoConnection.getDatabase().getCollection("graylog2_metrics")
.find(andQuery).sort(new BasicDBObject("timestamp", 1));
final Map metricsData = Maps.newHashMap();
metricsData.put("name", metricName);
final List
