Connect to Datadog Data in JRuby

JRuby is a high-performance, stable, fully threaded Java implementation of the Ruby programming language. The CData JDBC Driver for Datadog makes it easy to integrate connectivity to live Datadog data in JRuby. This article shows how to create a simple JRuby app that connects to Datadog data, executes a query, and displays the results.

Configure a JDBC Connection to Datadog Data

Before creating the app, note the installation location for the JAR file for the JDBC Driver (typically C:\Program Files\CData\CData JDBC Driver for Datadog\lib).

JRuby natively supports JDBC, so you can easily connect to Datadog and execute SQL queries. Initialize the JDBC connection with the getConnection function of the java.sql.DriverManager class.

Start by setting the Profile connection property to the location of the Datadog Profile on disk (e.g. C:\profiles\Datadog.apip). Next, set the ProfileSettings connection property to the connection string for Datadog (see below).

Datadog API Profile Settings

In your Datadog account, navigate to Organization Settings > API Keys to create an API Key, and Organization Settings > Application Keys to create an Application Key. Both are required.

Built-in Connection String Designer

For assistance in constructing the JDBC URL, use the connection string designer built into the Datadog JDBC Driver. Either double-click the JAR file or execute the jar file from the command-line.

java -jar cdata.jdbc.api.jar

Fill in the connection properties and copy the connection string to the clipboard.

Below is a typical JDBC connection string for Datadog:

jdbc:api:Profile=C:\profiles\Datadog.apip;ProfileSettings='APIKey=your_api_key;ApplicationKey=your_app_key';

Create a JRuby App with Connectivity to Datadog Data

Create a new Ruby file (for example: APISelect.rb) and open it in a text editor. Copy the following code into your file:

require 'java'
require 'rubygems'
require 'C:/Program Files/CData/CData JDBC Driver for Datadog 2018/lib/cdata.jdbc.api.jar'

url = "jdbc:api:Profile=C:\profiles\Datadog.apip;ProfileSettings='APIKey=your_api_key;ApplicationKey=your_app_key';"
conn = java.sql.DriverManager.getConnection(url)
stmt = conn.createStatement
rs = stmt.executeQuery("SELECT FilterId, Name FROM APMRetentionFilters")
while (rs.next) do
  puts rs.getString(1) + ' ' + rs.getString(2)
end

With the file completed, you are ready to display your Datadog data with JRuby. To do so, simply run your file from the command line:

jruby -S APISelect.rb

Writing SQL-92 queries to Datadog allows you to quickly and easily incorporate Datadog data into your own JRuby applications. Download a free trial today!