127 lines
3.8 KiB
Python
127 lines
3.8 KiB
Python
import argparse
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import pprint
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import logging
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from restic_volume_backup.config import Config
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from restic_volume_backup.containers import RunningContainers
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from restic_volume_backup import backup_runner
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from restic_volume_backup import restic
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logger = logging.getLogger(__name__)
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def setup_logger(level=logging.INFO):
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logger.setLevel(level)
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ch = logging.StreamHandler()
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ch.setLevel(logging.DEBUG)
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ch.setFormatter(logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s'))
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logger.addHandler(ch)
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setup_logger()
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def main():
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"""CLI entrypoint"""
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args = parse_args()
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config = Config()
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containers = RunningContainers()
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if args.action == 'status':
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status(config, containers)
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elif args.action == 'backup':
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backup(config, containers)
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elif args.action == 'start-backup-process':
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start_backup_process(config, containers)
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def status(config, containers):
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"""Outputs the backup config for the compose setup"""
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logger.info("Backup config for compose project '%s'", containers.this_container.project_name)
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logger.info("Current service: %s", containers.this_container.name)
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logger.info("Backup process: %s", containers.backup_process_container.name
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if containers.backup_process_container else 'Not Running')
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logger.info("Backup running: %s", containers.backup_process_running)
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backup_containers = containers.containers_for_backup()
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for container in backup_containers:
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if container.backup_enabled:
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logger.info('service: %s', container.service_name)
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for mount in container.filter_mounts():
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logger.info(' - %s', mount.source)
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if len(backup_containers) == 0:
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logger.info("No containers in the project has 'restic-volume-backup.enabled' label")
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def backup(config, containers):
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"""Request a backup to start"""
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# Make sure we don't spawn multiple backup processes
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if containers.backup_process_running:
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raise ValueError("Backup process already running")
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logger.info("Initializing repository")
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# TODO: Errors when repo already exists
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restic.init_repo(config.repository)
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logger.info("Starting backup container..")
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# Map all volumes from the backup container into the backup process container
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volumes = containers.this_container.volumes
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# Map volumes from other containers we are backing up
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mounts = containers.generate_backup_mounts('/backup')
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volumes.update(mounts)
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pprint.pprint(volumes, indent=2)
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backup_runner.run(
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image=containers.this_container.image,
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command='restic-volume-backup start-backup-process',
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volumes=volumes,
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environment=containers.this_container.environment,
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labels={
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"restic-volume-backup.backup_process": 'True',
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"com.docker.compose.project": containers.this_container.project_name,
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},
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)
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def start_backup_process(config, containers):
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"""Start the backup process container"""
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if (not containers.backup_process_container
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or containers.this_container == containers.backup_process_container is False):
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print(
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"Cannot run backup process in this container. Use backup command instead. "
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"This will spawn a new container with the necessary mounts."
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)
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return
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logger.info("start-backup-process")
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status(config, containers)
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# Waste a few seconds faking a backup
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print("Fake backup running")
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import time
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for i in range(5):
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time.sleep(1)
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print(i)
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exit(0)
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def parse_args():
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parser = argparse.ArgumentParser(prog='restic_volume_backup')
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parser.add_argument(
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'action',
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choices=['status', 'backup', 'start-backup-process'],
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)
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return parser.parse_args()
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if __name__ == '__main__':
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main()
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