File Listener (B2WS Server)

Overview

The File Listener (B2WS Server) trigger watches a file path on the B2Win Suite server and starts a new iteration when the matching file changes.

Purpose

Use this trigger when files are created or updated on the server and the workflow should process each changed file automatically.

Configuration

Field	Description
File Path	Server-side file path to watch. The path can include workflow properties and wildcard patterns such as *.csv.
Read file content to property	Stores supported file content in SERVER_FILE_LISTENER_CONTENT.

Outputs

Output	Data Type	Collection	Description
ChangedFile	NodeFile	False	The trigger outputs a NodeFile for the changed file.

Properties

Property	FlowDataType	Description
SERVER_FILE_LISTENER_FILE	JsonNode	File information that been listened for changed from the server
SERVER_FILE_LISTENER_CONTENT	String	The file content inside a property

Processing Logic

The trigger evaluates the configured path, lists matching files when a wildcard is used, sorts changed files by modification time, loads each file into the workflow as a NodeFile, and emits them sequentially. The last processed modification timestamp is stored after a successful iteration.

Examples

• C:\example_folder\examplefile.csv watches one file.
• C:\signatures\*.xlsx watches matching files in a folder.
• C:\signatures${EXEC_BY_USERNAME}_scanned_signature.jpg uses a workflow property in the path.

Notes / Limitations

• File content is only stored as a property when the option is enabled and the file type can be read safely.
• The watched path must be accessible from the B2Win Suite server process.