Connect to Hugging Face Data from a Connection Pool in Jetty

The CData JDBC driver for Hugging Face is easy to integrate with Java Web applications. This article shows how to efficiently connect to Hugging Face data in Jetty by configuring the driver for connection pooling. You will configure a JNDI resource for Hugging Face in Jetty.

Configure the JDBC Driver for Salesforce as a JNDI Data Source

Follow the steps below to connect to Salesforce from Jetty.

1. Enable the JNDI module for your Jetty base. The following command enables JNDI from the command-line:

   java -jar ../start.jar --add-to-startd=jndi
   

2. Add the CData and license file, located in the lib subfolder of the installation directory, into the lib subfolder of the context path.

3. Declare the resource and its scope. Enter the required connection properties in the resource declaration. This example declares the Hugging Face data source at the level of the Web app, in WEB-INF\jetty-env.xml.

   <Configure id='huggingfacedemo' class="org.eclipse.jetty.webapp.WebAppContext">
    <New id="huggingfacedemo" class="org.eclipse.jetty.plus.jndi.Resource">
    <Arg><Ref refid="huggingfacedemo"/></Arg>
    <Arg>jdbc/huggingfacedb</Arg>
    <Arg>
    <New class="cdata.jdbc.api.APIDriver">
    <Set name="url">jdbc:api:</Set>
    <Set name="Profile">C:\profiles\HuggingFace.apip</Set>
    <Set name="ProfileSettings">'APIKey</Set>
    </New>
    </Arg>
    </New>
   </Configure>
   

   HuggingFace Hub uses token-based authentication to enable access to its API. The API provides access to machine learning models, datasets, spaces, papers, and other resources on the HuggingFace Hub platform.

   Using API Key Authentication

   To authenticate to HuggingFace Hub, you will need to provide an API Key (Access Token). To obtain your access token:

   1. Log in to your HuggingFace account at https://huggingface.co
   2. Navigate to Settings > Access Tokens
   3. Click "New token" to create a new access token
   4. Select the appropriate permissions (read or write)
   5. Copy the token value

   After obtaining your access token, set the following connection properties:

   • AuthScheme: Set this to APIKey.
   • APIKey: Set this to your HuggingFace access token.

   Example connection string

   Profile=C:\profiles\HuggingFace.apip;ProfileSettings='APIKey=hf_xxxxxxxxxxxxxxxxxxxx';
   

4. Configure the resource in the Web.xml:

    jdbc/huggingfacedb
    javax.sql.DataSource
    Container
   
   

5. You can then access Hugging Face with a lookup to java:comp/env/jdbc/huggingfacedb:

   InitialContext ctx = new InitialContext();
   DataSource myhuggingface = (DataSource)ctx.lookup("java:comp/env/jdbc/huggingfacedb");
   

More Jetty Integration

The steps above show how to configure the driver in a simple connection pooling scenario. For more use cases and information, see the Working with Jetty JNDI chapter in the Jetty documentation.