A PostgreSQL Interface for Okta Data

There are a vast number of PostgreSQL clients available on the Internet. From standard Drivers to BI and Analytics tools, PostgreSQL is a popular interface for data access. Using our JDBC Drivers, you can now create PostgreSQL entry-points that you can connect to from any standard client.

To access Okta data as a PostgreSQL database, use the CData JDBC Driver for Okta and a JDBC foreign data wrapper (FDW). In this article, we compile the FDW, install it, and query Okta data from PostgreSQL Server.

Connect to Okta Data as a JDBC Data Source

To connect to Okta as a JDBC data source, you will need the following:

• Driver JAR path: The JAR is located in the lib subfolder of the installation directory.

• Driver class: cdata.jdbc.okta.OktaDriver

• JDBC URL: The URL must start with "jdbc:okta:" and can include any of the connection properties in name-value pairs separated with semicolons.

  To connect to Okta, set the Domain connection string property to your Okta domain.

  You will use OAuth to authenticate with Okta, so you need to create a custom OAuth application.

  Creating a Custom OAuth Application

  From your Okta account:

  1. Sign in to your Okta developer edition organization with your administrator account.
  2. In the Admin Console, go to Applications > Applications.
  3. Click Create App Integration.
  4. For the Sign-in method, select OIDC - OpenID Connect.
  5. For Application type, choose Web Application.
  6. Enter a name for your custom application.
  7. Set the Grant Type to Authorization Code. If you want the token to be automatically refreshed, also check Refresh Token.
  8. Set the callback URL:
     • For desktop applications and headless machines, use http://localhost:33333 or another port number of your choice. The URI you set here becomes the CallbackURL property.
     • For web applications, set the callback URL to a trusted redirect URL. This URL is the web location the user returns to with the token that verifies that your application has been granted access.
  9. In the Assignments section, either select Limit access to selected groups and add a group, or skip group assignment for now.
  10. Save the OAuth application.
  11. The application's Client Id and Client Secret are displayed on the application's General tab. Record these for future use. You will use the Client Id to set the OAuthClientId and the Client Secret to set the OAuthClientSecret.
  12. Check the Assignments tab to confirm that all users who must access the application are assigned to the application.
  13. On the Okta API Scopes tab, select the scopes you wish to grant to the OAuth application. These scopes determine the data that the app has permission to read, so a scope for a particular view must be granted for the driver to have permission to query that view. To confirm the scopes required for each view, see the view-specific pages in Data Model < Views in the Help documentation.

  Built-in Connection String Designer

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

  java -jar cdata.jdbc.okta.jar

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

  A typical JDBC URL is below:

  jdbc:okta:Domain=dev-44876464.okta.com;InitiateOAuth=GETANDREFRESH

Build the JDBC Foreign Data Wrapper

The Foreign Data Wrapper can be installed as an extension to PostgreSQL, without recompiling PostgreSQL. The jdbc2_fdw extension is used as an example (downloadable here).

1. Add a symlink from the shared object for your version of the JRE to /usr/lib/libjvm.so. For example: ln -s /usr/lib/jvm/java-6-openjdk/jre/lib/amd64/server/libjvm.so /usr/lib/libjvm.so
2. Start the build: make install USE_PGXS=1

Query Okta Data as a PostgreSQL Database

After you have installed the extension, follow the steps below to start executing queries to Okta data:

1. Log into your database.
2. Load the extension for the database: CREATE EXTENSION jdbc2_fdw;
3. Create a server object for Okta: CREATE SERVER Okta FOREIGN DATA WRAPPER jdbc2_fdw OPTIONS ( drivername 'cdata.jdbc.okta.OktaDriver', url 'jdbc:okta:Domain=dev-44876464.okta.com;InitiateOAuth=GETANDREFRESH', querytimeout '15', jarfile '/home/MyUser/CData/CData\ JDBC\ Driver\ for\ Salesforce MyDriverEdition/lib/cdata.jdbc.okta.jar');
4. Create a user mapping for the username and password of a user known to the MySQL daemon. CREATE USER MAPPING for postgres SERVER Okta OPTIONS ( username 'admin', password 'test');
5. Create a foreign table in your local database: postgres=# CREATE FOREIGN TABLE users ( users_id text, users_Id text, users_ProfileFirstName numeric) SERVER Okta OPTIONS ( table_name 'users');