Presto connection

Introduction

A Presto connection, created using the Presto connector, establishes access to Presto. These activities, once configured, interact with Presto through the connection.

Create or edit a Presto connection

A new Presto connection is created using the Presto connector from one of these locations:

• The design component palette's Project endpoints and connectors tab (see Design component palette).
• The Global Connections page (see Create a global endpoint in Global Connections).

An existing Presto connection can be edited from these locations:

• The design component palette's Project endpoints and connectors tab (see Design component palette).
• The project pane's Components tab (see Component actions menu in Project pane Components tab).
• The Global Connections page (see Edit a global endpoint in Global Connections).

Configure a Presto connection

Each user interface element of the Presto connection configuration screen is described below.

• Connection Name: Enter a name to use to identify the connection. The name must be unique for each Presto connection and must not contain forward slashes (/) or colons (:). This name is also used to identify the Presto endpoint, which refers to both a specific connection and its activities.

• Server: Enter the server.

• Port: Enter the port.

• Auth Scheme: Select the authorization scheme, one of:

  • None

  • Kerberos

    • Kerberos KDC: Enter the Kerberos KDC.

    • Kerberos Realm: Enter the Kerberos realm.

    • Kerberos SPN: Enter the Kerberos SPN.

    • Kerberos Keytab File: Enter the Kerberos keytab file.

    • Kerberos Ticket Cache: Enter the Kerberos ticket cache.

  • LDAP

    • User: Enter the user.

    • Password: Enter the password.

• Presto Kind: Select the presto kind, one of:

  • Presto

  • Trino

• Use SSL: When selected, specifies to use SSL.

• Use Proxy Settings: Select to use Private Agent proxy settings.

• Advanced Configurations: When selected, shows the Advanced Configurations Properties table, which is used to add additional configuration properties as key-value pairs.

  Click the add icon to add a row to the table below and enter a key-value pair for each property.

  To save the row, click the submit icon in the rightmost column.

  To edit or delete a single row, hover over the rightmost column and use the edit icon or delete icon .

  To delete all rows, click Clear All.

  Important

  Fields in the Advanced Configurations table display the variable icon only in edit mode. For these fields' variable values to be populated at runtime, the agent version must be at least 10.75 / 11.13.

• Test: Click to verify the connection using the specified configuration. When the connection is tested, the latest version of the connector is downloaded by the agent(s) in the agent group associated with the current environment. This connector supports suspending the download of the latest connector version by using the Disable Auto Connector Update organization policy.

• Save Changes: Click to save and close the connection configuration.

• Discard Changes: After making changes to a new or existing configuration, click to close the configuration without saving. A message asks you to confirm that you want to discard changes.

• Delete: After opening an existing connection configuration, click to permanently delete the connection from the project and close the configuration (see Component dependencies, deletion, and removal). A message asks you to confirm that you want to delete the connection.

Next steps

After a Presto connector connection has been created, you place an activity type on the design canvas to create activity instances to be used either as sources (to provide data in an operation) or as targets (to consume data in an operation).

Menu actions for a connection and its activity types are accessible from the project pane and design component palette. For details, see Actions menus in Connector basics.

These activity types are available:

• Query: Retrieves records from a table at Presto and is intended to be used as a source in an operation.

• Create: Inserts a record into a table at Presto and is intended to be used as a target in an operation.

• Delete: Deletes a record from a table at Presto and is intended to be used as a target in an operation.

• Execute: Executes a procedure at Presto and is intended to be used as a target in an operation.