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Prototype 2 for backup script

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This commit is contained in:
Eric Torres 2019-03-17 18:59:02 -07:00
parent 68e063b3e2
commit ab3eed008c
1 changed files with 18 additions and 6 deletions
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24
bin/backup
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@ -19,6 +19,7 @@ import sys
from rbackup.hierarchy.repository import Repository from rbackup.hierarchy.repository import Repository
from rbackup.rsync import rsync from rbackup.rsync import rsync
from subprocess import CalledProcessError
# ========== Constants ========== # ========== Constants ==========
LOGFORMAT = "==> %(levelname)s %(message)s" LOGFORMAT = "==> %(levelname)s %(message)s"
@ -28,7 +29,7 @@ RSYNC_DEFAULT_OPTS = [
"--backup", "--backup",
"--hard-links", "--hard-links",
"--ignore-missing-args", "--ignore-missing-args",
"--prune-dirs", "--prune-empty-dirs",
"--suffix=.old", "--suffix=.old",
"--xattrs", "--xattrs",
] ]
@ -41,6 +42,8 @@ EXTRA_RSYNC_OPTS = {
ETC_INCLUDE_FILE = "/etc/rbackup/etc-include.conf" ETC_INCLUDE_FILE = "/etc/rbackup/etc-include.conf"
E_FAILED_PROCESS = 1
# ========== Logging Setup ========== # ========== Logging Setup ==========
console_formatter = logging.Formatter(LOGFORMAT) console_formatter = logging.Formatter(LOGFORMAT)
syslog = logging.getLogger("rbackup") syslog = logging.getLogger("rbackup")
@ -60,21 +63,26 @@ syslog.addHandler(stderr_handler)
# ========== Functions ========== # ========== Functions ==========
def backup_all(s, rsync_opts): def backup_all(s, prev, rsync_opts):
raise NotImplementedError raise NotImplementedError
def backup_etc(s, rsync_opts): def backup_etc(s, prev, rsync_opts):
"""Create a backup of /etc """Create a backup of /etc
:param s: snapshot to back up to :param s: snapshot to back up to
:type s: Snapshot object :type s: Snapshot object
:param prev: previous snapshot for hardlinking
:type prev: Snapshot object or None
:param opts: options to pass to rsync :param opts: options to pass to rsync
:type opts: list :type opts: list
""" """
local_opts = rsync_opts local_opts = rsync_opts
local_opts.append(f"--files-from={ETC_INCLUDE_FILE}") local_opts.append(f"--files-from={ETC_INCLUDE_FILE}")
if prev is not None:
rsync_opts.append(f"--link-dest={prev_snapshot.etc_dir}")
syslog.debug("Creating directory {s.etc_dir}") syslog.debug("Creating directory {s.etc_dir}")
s.etc_dir.mkdir(parents=True, exist_ok=False) s.etc_dir.mkdir(parents=True, exist_ok=False)
rsync(*local_opts, "/etc/", str(s.etc_dir)) rsync(*local_opts, "/etc/", str(s.etc_dir))
@ -161,10 +169,14 @@ if __name__ == "__main__":
repo.create_snapshot() repo.create_snapshot()
curr_snapshot = repo.curr_snapshot curr_snapshot = repo.curr_snapshot
rsync_opts.append(f"--link-dest={prev_snapshot.path}")
rsync_opts.append("--backup-dir=backup") rsync_opts.append("--backup-dir=backup")
DISPATCHER[args.operation](curr_snapshot, rsync_opts) try:
DISPATCHER[args.operation](curr_snapshot, prev_snapshot, rsync_opts)
except CalledProcessError as e:
syslog.error("Backup process failed")
syslog.info(f"Failing command: {e.cmd}")
exit(E_FAILED_PROCESS)
snapshot_symlink = repo.path / "current" snapshot_symlink = repo.path / "current"
@ -173,7 +185,7 @@ if __name__ == "__main__":
except FileNotFoundError: except FileNotFoundError:
pass pass
snapshot_symlink.symlink_to(curr_snapshot, target_is_directory=True) snapshot_symlink.symlink_to(curr_snapshot.path, target_is_directory=True)
if args.run_post_sync: if args.run_post_sync:
os.sync() os.sync()