This is a reporter for the Dropwizard Metrics library, similar to the Graphite or Ganglia reporters, except that it reports to a GELF-capable server, such as Graylog.
As this metrics reporter is using GELF for sending data into Graylog, the only library needed is gelfclient.
You can simply add a dependency in your pom.xml (or whatever dependency resolution system you might have)
<dependency>
<groupId>org.graylog.metrics</groupId>
<artifactId>metrics-gelf</artifactId>
<version>${metrics-gelf.version}</version>
</dependency>
final MetricRegistry registry = new MetricRegistry();
GelfReporter reporter = GelfReporter.forRegistry(registry)
.host(new InetSocketAddress("127.0.0.1", 12201))
.build();
reporter.start(60, TimeUnit.SECONDS);
Define your metrics and registries as usual
private final Meter incomingRequestsMeter = registry.meter("incoming-http-requests");
// in your app code
incomingRequestsMeter.mark(1);
This is how the serialized metrics looks like in Graylog:
{
"message": "name=usa-gov-heartbearts type=COUNTER",
"name": "usa-gov-heartbearts",
"type": "COUNTER",
"timestamp": "2016-07-20T09:29:58.000",
"count": 18
}
{
"message" : "name=bulk-request-timer type=TIMER",
"name" : "bulk-request-timer",
"type" : "TIMER",
"timestamp" : "2016-07-20T09:43:58.000",
"count" : 114,
"max" : 109.681,
"mean" : 5.439666666666667,
"median" : 5.439666666666667,
"min" : 2.457,
"p50" : 4.3389999999999995,
"p75" : 5.0169999999999995,
"p95" : 8.37175,
"p98" : 9.6832,
"p99" : 94.68429999999942,
"p999" : 109.681,
"stddev" : 9.956913151098842,
"m15_rate" : 0.10779994503690074,
"m1_rate" : 0.07283351433589833,
"m5_rate" : 0.10101298115113727,
"mean_rate" : 0.08251056571678642,
"duration_unit" : "milliseconds",
"rate_unit" : "second"
}
{
"message" : "name=usagov-incoming-requests type=METER",
"name" : "usagov-incoming-requests",
"type" : "METER",
"timestamp" : "2016-07-20T09:29:58.000",
"count" : 224,
"m1_rate" : 0.3236309568191993,
"m5_rate" : 0.45207208204948995,
"m15_rate" : 0.5014348927301423,
"mean_rate" : 0.4135529888278531,
"rate_unit" : "second"
}
{
"message" : "name=my-histgram type=HISTOGRAM",
"name" : "my-histgram",
"type" : "HISTOGRAM",
"timestamp" : "2016-07-20T09:29:58.000",
"count" : 114,
"min" : 2.457,
"max" : 109.681,
"mean" : 5.439666666666667,
"stddev" : 9.956913151098842,
"median" : 5.439666666666667,
"p50" : 4.3389999999999995,
"p75" : 5.0169999999999995,
"p95" : 8.37175,
"p98" : 9.6832,
"p99" : 94.68429999999942,
"p999" : 109.681
}
{
"message" : "name=usagov-incoming-requests type=GAUGE",
"name" : "usagov-incoming-requests",
"type" : "GAUGE",
"timestamp" : "2016-07-20T09:29:58.000",
"value" : 123
}
Copyright (c) 2016 Graylog, Inc.
This library is licensed under the Apache License, Version 2.0.
See http://www.apache.org/licenses/LICENSE-2.0.html or the LICENSE file in this repository for the full license text.
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