The Scripts tab is where channel-level scripts are configured. Select a script type from the drop-down list and edit the script in the text area.Select a script type from the drop-down and edit the script in the text area below. If a number appears next to "Scripts" in the tab, that number represents how many scripts have been edited from the default values. There is also a Reference List to the right for easy drag-and-drop of common helper methods / code templates.
The following channel-level script types can be edited:
- Deploy Script: This script executes once when the channel is deployed. You have access to the global / global channel / configuration maps here. Typically this script is used to perform a one-time operation for the given channel, such as loading a properties file from disk, or instantiating a database connection.
- Undeploy Script: This script executes once when the channel is undeployed. You have access to the global / global channel / configuration maps here. Typically this script is used to cleanup any data created from the deploy script, such as closing a database connection.
- Preprocessor Script; This script executes once for every message, after the attachment handler has run but before the message reaches the source filter/transformer. You have access to "message" a string variable containing the incoming data. Whatever you return from the preprocessor script is stored as the Processed Raw content and used to feed into the source filter/transformer.
- Post Processor Script: This script executes once for every message, after all destinations have completed processing (not including queued messages which are processed asynchronously). You have access to "message" which is an ImmutableMessage object containing information about the state of all connector messages. This script may be used as a general tool to perform a custom cleanup script. It can also be used to return a custom response that may be sent back to the originating system.
