VOOZH about

URL: https://www.cdata.com/kb/tech/presto-jdbc-jboss.rst

⇱ Connect to Presto Data from a Connection Pool in JBoss

Connect to Presto Data from a Connection Pool in JBoss

👁 Jerod Johnson
Jerod Johnson
Director, Technology Evangelism
Integrate Presto data into Java servlets: Use the Management Console in JBoss to install the Presto JDBC Driver.

CData JDBC drivers can be configured in JBoss by following the standard procedure for connection pooling. This article details how to access Presto data from a connection pool in JBoss applications. This article details how to use the JBoss Management Interface to configure the CData JDBC Driver for Presto. You will then access Presto data from a connection pool.

About Presto Data Integration

Accessing and integrating live data from Trino and Presto SQL engines has never been easier with CData. Customers rely on CData connectivity to:

  • Access data from Trino v345 and above (formerly PrestoSQL) and Presto v0.242 and above (formerly PrestoDB)
  • Read and write access all of the data underlying your Trino or Presto instances
  • Optimized query generation for maximum throughput.

Presto and Trino allow users to access a variety of underlying data sources through a single endpoint. When paired with CData connectivity, users get pure, SQL-92 access to their instances, allowing them to integrate business data with a data warehouse or easily access live data directly from their preferred tools, like Power BI and Tableau.

In many cases, CData's live connectivity surpasses the native import functionality available in tools. One customer was unable to effectively use Power BI due to the size of the datasets needed for reporting. When the company implemented the CData Power BI Connector for Presto they were able to generate reports in real-time using the DirectQuery connection mode.


Getting Started


Create a JDBC Data Source for Presto from the Management Console

Follow the steps below to add the driver JAR and define required connection properties.

  1. In the Runtime menu, select the Domain or Server menu, depending on whether you are deploying to a managed domain or to a stand-alone server, and click "Manage deployments" to open the Deployments page.
  2. Click Add. In the resulting wizard, add the JAR file and license for the driver, located in the lib subfolder of the installation directory. Finish the wizard with the defaults, select the driver, and click Enable. 👁 The deployed JAR. (Salesforce is shown.)
  3. In the Configuration menu, click Subsystems -> Connector -> Datasources. This opens the JDBC Datasources page.
  4. Click Add and, in the resulting wizard, enter a name for the driver and the JNDI name. For example: 
    java:jboss/root/jdbc/Presto
  5. Select the driver that you added above.

  6. Enter the JDBC URL and the username and password. The syntax of the JDBC URL is jdbc:presto: followed by a semicolon-separated list of connection properties.

    Set the Server and Port connection properties to connect, in addition to any authentication properties that may be required.

    To enable TLS/SSL, set UseSSL to true.

    Authenticating with LDAP

    In order to authenticate with LDAP, set the following connection properties:

    • AuthScheme: Set this to LDAP.
    • User: The username being authenticated with in LDAP.
    • Password: The password associated with the User you are authenticating against LDAP with.

    Authenticating with Kerberos

    In order to authenticate with KERBEROS, set the following connection properties:

    • AuthScheme: Set this to KERBEROS.
    • KerberosKDC: The Kerberos Key Distribution Center (KDC) service used to authenticate the user.
    • KerberosRealm: The Kerberos Realm used to authenticate the user with.
    • KerberosSPN: The Service Principal Name for the Kerberos Domain Controller.
    • KerberosKeytabFile: The Keytab file containing your pairs of Kerberos principals and encrypted keys.
    • User: The user who is authenticating to Kerberos.
    • Password: The password used to authenticate to Kerberos.

    Built-in Connection String Designer

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

    java -jar cdata.jdbc.presto.jar

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

    👁 Using the built-in connection string designer to generate a JDBC URL (Salesforce is shown.)

    A typical connection string is below:

    jdbc:presto:Server=127.0.0.1;Port=8080;
  7. Test the connection and finish the wizard. Select the Presto data source and click Enable.
👁 The enabled data source. (Salesforce is shown.)

More JBoss Integration

The steps above show how to configure the driver in a simple connection pooling scenario. For more information, refer to the Data Source Management chapter in the JBoss EAP documentation.