restic-compose-backup/restic_volume_backup/cli.py

113 lines
3.4 KiB
Python

import argparse
import pprint
import sys
from restic_volume_backup.config import Config
from restic_volume_backup.containers import RunningContainers
from restic_volume_backup import backup_runner
from restic_volume_backup import restic
def main():
args = parse_args()
config = Config()
containers = RunningContainers()
if args.action == 'status':
status(config, containers)
elif args.action == 'backup':
backup(config, containers)
# Separate command to avoid spawning infinite containers :)
elif args.action == 'start-backup-process':
start_backup_process(config, containers)
def status(config, containers):
"""Outputs the backup config for the compse setup"""
print()
print("Backup config for compose project '{}'".format(containers.this_container.project_name))
print("Current service:", containers.this_container.name)
print("Backup process :", containers.backup_process_container.name \
if containers.backup_process_container else 'Not Running')
print("Backup running :", containers.backup_process_running)
print()
backup_containers = containers.containers_for_backup()
for container in backup_containers:
if container.backup_enabled:
print('service: {}'.format(container.service_name))
for mount in container.filter_mounts():
print(' - {}'.format(mount.source))
if len(backup_containers) == 0:
print("No containers in the project has 'restic-volume-backup.enabled' label")
print()
def backup(config, containers):
"""Start backup"""
# Make sure we don't spawn multiple backup processes
if containers.backup_process_running:
raise ValueError("Backup process already running")
print("Initializing repository")
# TODO: Errors when repo already exists
restic.init_repo(config.repository)
print("Starting backup container..")
# Map all volumes from the backup container into the backup process container
volumes = containers.this_container.volumes()
# Map volumes from other containers we are backing up
mounts = containers.generate_backup_mounts('/backup')
volumes.update(mounts)
pprint.pprint(volumes, indent=2)
backup_runner.run(
image=containers.this_container.image,
command='restic-volume-backup start-backup-process',
volumes=volumes,
enviroment=containers.this_container.environment,
labels={
"restic-volume-backup.backup_process": 'True',
"com.docker.compose.project": containers.this_container.project_name,
},
)
def start_backup_process(config, containers):
"""Start the backup process container"""
if not containers.backup_process_container or containers.this_container == containers.backup_process_container is False:
print(
"Cannot run backup process in this container. Use backup command instead. "
"This will spawn a new container with the necessary mounts."
)
return
print("start-backup-process")
status(config, containers)
import time
for i in range(5):
time.sleep(1)
print(i)
exit(1)
def parse_args():
parser = argparse.ArgumentParser(prog='restic_volume_backup')
parser.add_argument(
'action',
choices=['status', 'backup', 'start-backup-process'],
)
return parser.parse_args()
if __name__ == '__main__':
main()