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The Sync Tool is a utility which was created in order to provide a simple way to move files from a local file system to DuraCloud and subsequently keep the files in DuraCloud synchronized with those on the local system.
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How the Sync Tool Works
- When you run the Sync Tool for the first time, you must include DuraCloud connection information (host, port, username, password) as well as the space where you would like all of your files stored. You must also provide a list of directories which will be synced to DuraCloud and a directory for the Sync Tool to use for its own work.
- When the Sync Tool starts up, it will look through all of the files in each of the local content directories and add them to its internal queue for processing. Each of those files will then be written to your DuraCloud space. As this initial write is happening a listener is set up to watch for any file changes within each of the content directories. As a change occurs (a file is added, updated, or deleted), that change is added to the queue, and the appropriate action is taken to make the DuraCloud space consistent with the local file (i.e. the file is either written to the space or deleted from the space.)
- You can stop the Sync Tool at any time by typing 'x' or 'exit' on the command line where it is running. It will stop all listeners, complete any file transfers that are in progress, and close down.
- When you restart the Sync Tool, if you point it at the same work directory, it will pick up where it left off. While the Sync Tool is running, it is constantly writing backups of its internal queue, so it first reads the most current backup and begins processing the files there. It then scans the content directories to see if there are any files which have been added or updated since the last backup, and it also pulls a list of files from the DuraCloud space and scans that list to see if any local files have been deleted. Any changes detected are added to the internal queue, and the Sync Tool continues to run as usual.
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