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Connect to Amazon S3 Data from a Connection Pool in Jetty

The Amazon S3 JDBC Driver supports connection pooling: This article shows how to connect faster to Amazon S3 data from Web apps in Jetty.

The CData JDBC driver for Amazon S3 is easy to integrate with Java Web applications. This article shows how to efficiently connect to Amazon S3 data in Jetty by configuring the driver for connection pooling. You will configure a JNDI resource for Amazon S3 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 Amazon S3 data source at the level of the Web app, in WEB-INF\jetty-env.xml.

    <Configure id='amazons3demo' class="org.eclipse.jetty.webapp.WebAppContext"> <New id="amazons3demo" class=""> <Arg><Ref refid="amazons3demo"/></Arg> <Arg>jdbc/amazons3db</Arg> <Arg> <New class="cdata.jdbc.amazons3.AmazonS3Driver"> <Set name="url">jdbc:amazons3:</Set> <Set name="AccessKey">a123</Set> <Set name="SecretKey">s123</Set> </New> </Arg> </New> </Configure>

    To authorize Amazon S3 requests, provide the credentials for an administrator account or for an IAM user with custom permissions. Set AccessKey to the access key Id. Set SecretKey to the secret access key.

    Note: You can connect as the AWS account administrator, but it is recommended to use IAM user credentials to access AWS services.

    For information on obtaining the credentials and other authentication methods, refer to the Getting Started section of the Help documentation.

  4. Configure the resource in the Web.xml:

    jdbc/amazons3db javax.sql.DataSource Container
  5. You can then access Amazon S3 with a lookup to java:comp/env/jdbc/amazons3db: InitialContext ctx = new InitialContext(); DataSource myamazons3 = (DataSource)ctx.lookup("java:comp/env/jdbc/amazons3db");

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.