sathish-se/datadog_java_statsd_example

Sample code to send metrics via statsd from Java in Docker to Datadog

Datadog Java StatsD Example

Sample code to send metrics via statsd from Java in Docker to Datadog

The base setup is based on DataDog/java-dogstatsd-client

Assumptions and Note:

1. The Datadog agent is running in a container on the host.

2. There is a valid Datadog account available to send metrics

3. This was tested on Ubuntu Ubuntu 18.04.4 LTS

Files:

1. Dockerfile - to create the container where the Java code will execute.

2. pom.xml - the pom file that includes the java-dogstatsd-client dependency from DataDog/java-dogstatsd-client

3. /src/main/java/dogstatsdclient/DogStatsdClient.java - the sample Java code to send StatsD metrics to Datadog

Configuration:

1. Execute docker ps and grab the container ID of the Datadog agent

2. Execute docker inspect -f '{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' <container_id> to get the IP of the container running the Datadog agent.

3. In the Dockerfile change <IP_OF_DD_AGENT_CONTAINER> to the ip in step 2.

4. Get your Datadog API key from the Datadog UI

Execution:

1. Execute mvn compile && mvn package && docker build -t my-java-app . to compile and package the Java application and build the Docker image.

2. After replacing <DATADOG_API_KEY> with that from step 4 above execute docker run -it --rm -v /var/run/docker.sock:/var/run/docker.sock:ro -v /proc/:/host/proc/:ro -v /sys/fs/cgroup/:/host/sys/fs/cgroup:ro -e DD_API_KEY="<DATADOG_API_KEY>" -e DD_DOGSTATSD_NON_LOCAL_TRAFFIC=true --name my-running-app my-java-app to run the application.

3. Go here and type example_metric to view the metrics in Datadog or here to see them visualized.