Storm Metrics module for reporting to statsd
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README.md

Storm Metrics Statsd

storm-metrics-statsd is a module for Storm that enables metrics collection and reporting to statsd.

Building/Installation

git clone https://github.com/endgameinc/storm-metrics-statsd.git
cd storm-metrics-statsd
mvn compile package install

Usage

This module can be used in two ways:

  1. Configure it for each topology by calling Conf.registerMetricsConsumer() prior to launching the topology.
  2. Deploy and configure system wide so usage of this is transparent across all topologies.

Configure each topology separately

Add this as a dependency to your pom.xml

<dependency>
  <groupId>com.endgame</groupId>
  <artifactId>storm-metrics-statsd</artifactId>
  <version>1.0.0-SNAPSHOT</version>
</dependency>

Configure the StatsdMetricConsumer when building your topology. The example below is based on the storm-starter ExclamationTopology.

import com.endgame.storm.metrics.statsd.StatsdMetricConsumer;

...

TopologyBuilder builder = new TopologyBuilder();
builder.setSpout("word", new TestWordSpout(), 10);
builder.setBolt("exclaim1", new ExclamationBolt(), 3).shuffleGrouping("word");
builder.setBolt("exclaim2", new ExclamationBolt(), 2).shuffleGrouping("exclaim1");

#
#  Configure the StatsdMetricConsumer
#
Map statsdConfig = new HashMap();
statsdConfig.put(StatsdMetricConsumer.STATSD_HOST, "statsd.server.mydomain.com");
statsdConfig.put(StatsdMetricConsumer.STATSD_PORT, 8125);
statsdConfig.put(StatsdMetricConsumer.STATSD_PREFIX, "storm.metrics.");

Config conf = new Config();
conf.registerMetricsConsumer(StatsdMetricConsumer.class, statsdConfig, 2);
 
if (args != null && args.length > 0) {
  conf.setNumWorkers(3);
  StormSubmitter.submitTopology(args[0], conf, builder.createTopology());
}
else {
  LocalCluster cluster = new LocalCluster();
  cluster.submitTopology("test", conf, builder.createTopology());
  Utils.sleep(5*60*1000L);
  cluster.killTopology("test");
  cluster.shutdown();
}

System Wide Deployment

System wide deployment requires three steps:

1. Add this section to your $STORM_HOME/conf/storm.yaml.

topology.metrics.consumer.register:
  - class: "com.endgame.storm.metrics.statsd.StatsdMetricConsumer"
     parallelism.hint: 2
     argument:
       metrics.statsd.host: "statsd.server.mydomain.com"
       metrics.statsd.port: 8125
       metrics.statsd.prefix: "storm.metrics."

2. Install the storm-metrics-statsd and java-statsd-client JARs into $STORM_HOME/lib/ ON EACH STORM NODE.

$ mvn package
$ mvn org.apache.maven.plugins:maven-dependency-plugin:2.7:copy-dependencies -DincludeArtifactIds=java-statsd-client
$ cp target/dependency/java-statsd-client-1.0.1.jar $STORM_HOME/lib/
$ cp target/storm-metrics-statsd-*.jar $STORM_HOME/lib/

3. Restart storm and you will likely need to restart any topologies running prior to changing your $STORM_HOME/conf/storm.yaml.

Notes

You can override the topology name used when reporting to statsd by calling:

statsdConfig.put(Config.TOPOLOGY_NAME, "myTopologyName");
// OR 
statsdConfig.put("topology.name", "myTopologyName");

This will be useful if you use versioned topology names (.e.g. appending a timestamp or a version string), but only care to track them as one in statsd.

License

storm-metrics-statsd

Copyright 2014 Endgame, Inc.

Endgame, Inc.

    Licensed under the Apache License, Version 2.0 (the "License"); you may
    not use this file except in compliance with the License. You may obtain
    a copy of the License at

         http://www.apache.org/licenses/LICENSE-2.0

    Unless required by applicable law or agreed to in writing,
    software distributed under the License is distributed on an
    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
    KIND, either express or implied.  See the License for the
    specific language governing permissions and limitations
    under the License.

Author

Jason Trost (@jason_trost)