50 lines
1.1 KiB
Python
50 lines
1.1 KiB
Python
#!/usr/bin/python3
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"""
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Run a backup.
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Command-Line Arguments
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======================
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"""
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import argparse
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import logging
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import os.path
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import rbackup.rsync as rsync
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from rbackup.hierarchy import Hierarchy
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# ========== Constants ==========
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RSYNC_DEFAULT_OPTS = [
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"--archive",
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"--hard-links",
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"--prune-dirs",
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"--backup",
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"--ignore-missing-args",
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]
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EXTRA_RSYNC_OPTS = {"dry_run": "--dry-run"}
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# ========== Logging Setup ==========
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# ========== Main Script ==========
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if __name__ == "__main__":
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parser = argparse.ArgumentParser()
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parser.add_argument(
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"-d",
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"--dry-run",
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action="append_const",
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dest="extra_rsync_opts",
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const=EXTRA_RSYNC_OPTS["dry_run"],
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help="pass --dry-run to rsync",
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)
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parser.add_argument("dest", help="destination directory", metavar="destination")
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args = parser.parser_args()
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hier = Hierarchy(args.dest)
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link_dest = hier.prev_snapshot
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# Backup to hier.curr_snapshot
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# Relink 'prev' to point to current snapshot
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os.remove(hier.prev_snapshot_link)
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os.symlink(curr_snapshot, hier.prev_snapshot_link, target_is_directory=True)
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