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Choose which conditions of file and directory changes to detect on a remote Google Cloud Storage bucket. Launch a workflow when the Trigger detects new, changed, and deleted files. It is possible to launch a flow on file count or file size condition.

Watch for new files Launch a workflow on newly created and uploaded files.
Watch for new and existing files Launch a workflow on newly created files as well as the files already existing in the specified directory.
Watch for deleted files Launch a workflow when files are deleted.
Watch for modified files Detects when the file content changes.
Ignore timestamp When the Watch for modified files option is selected, the Ignore timestamp option prevents Trigger from executing Task when changes are detected only in the file date and time.
Watch for file count in directory Launch a workflow when the total number of files exceeds the specified number.
Watch for file size that is greater than Detects files that are larger than a particular size.
Size unitsSize units selectionSet file size limits in any preferred format—bytes, kilobytes, megabytes, gigabytes, or terabytes.


  • When watching for New and existing files, File size or File count, the Google Cloud Storage Watcher waits for all currently running Task instances to finish, before triggering again. This behavior can be changed with a Registry override.

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