Connect to Cloudflare Data in JRuby

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

Configure a JDBC Connection to Cloudflare 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 Cloudflare\lib).

JRuby natively supports JDBC, so you can easily connect to Cloudflare 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 Cloudflare Profile on disk (e.g. C:\profiles\Cloudflare.apip). Next, set the ProfileSettings connection property to the connection string for Cloudflare (see below).

Cloudflare API Profile Settings

Obtain your Global API Key or create an API Token from the Cloudflare dashboard under My Profile > API Tokens.

Built-in Connection String Designer

For assistance in constructing the JDBC URL, use the connection string designer built into the Cloudflare 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 Cloudflare:

jdbc:api:Profile=C:\profiles\Cloudflare.apip;ProfileSettings='APIKey=your_api_token;APIEmail=your_email';

Create a JRuby App with Connectivity to Cloudflare 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 Cloudflare 2018/lib/cdata.jdbc.api.jar'

url = "jdbc:api:Profile=C:\profiles\Cloudflare.apip;ProfileSettings='APIKey=your_api_token;APIEmail=your_email';"
conn = java.sql.DriverManager.getConnection(url)
stmt = conn.createStatement
rs = stmt.executeQuery("SELECT Id, Name FROM AccessApplications")
while (rs.next) do
 puts rs.getString(1) + ' ' + rs.getString(2)
end

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

jruby -S APISelect.rb

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