backup.py

import b2sdk.v1 as b2
import cfg
import os
import shutil
import sys
import time

print("Backing up scriptdir:", cfg.SCRIPT_DIR)

info = b2.InMemoryAccountInfo()

b2_api = b2.B2Api(info)

try:
    application_key_id = cfg.CONFIG['b2_key_id']
    application_key = cfg.CONFIG['b2_key']
    destination = cfg.CONFIG['b2_destination']
except KeyError:
    print("Missing b2 config key(s).")
    sys.exit()

b2_api.authorize_account("production", application_key_id, application_key)

source = cfg.SCRIPT_DIR

source_tmp = os.path.join(cfg.SCRIPT_DIR, '.tmp_BU')
if os.path.exists(source_tmp):
    shutil.rmtree(source_tmp)
shutil.copytree(source,
                source_tmp,
                symlinks=False,
                ignore=shutil.ignore_patterns(
                    '.*', 'bot-env', '__pycache__'
                ))

source = b2.parse_sync_folder(source_tmp, b2_api)
destination = b2.parse_sync_folder(destination, b2_api)

policies_manager = b2.ScanPoliciesManager(
    exclude_dir_regexes=("bot-env", ".git", ".*__(.*)__.*", "^\\.(.*)"),
    exclude_file_regexes=("^\\.(.*)", ".*__pycache__.*", ".*\\.txt"),
    exclude_all_symlinks=True
)

synchronizer = b2.Synchronizer(
    max_workers=10,
    policies_manager=policies_manager,
    dry_run=False,
    allow_empty_source=True,
    newer_file_mode=b2.NewerFileSyncMode.REPLACE,
    keep_days_or_delete=b2.KeepOrDeleteMode.DELETE,
)

no_progress = True
with b2.SyncReport(sys.stdout, no_progress) as reporter:
    synchronizer.sync_folders(
        source_folder=source,
        dest_folder=destination,
        now_millis=int(round(time.time() * 1000)),
        reporter=reporter,
    )

print("Backup complete.")
shutil.rmtree(source_tmp)