def test_latest_db_file():
assert latest_db_file(["v10_log.db", "v9_log.db"]) == "v10_log.db"
assert latest_db_file(["v9_log.db", "v10_log.db"]) == "v10_log.db"
assert latest_db_file(["v1_log.db", "v9_log.db"]) == "v9_log.db"
assert latest_db_file(["v9_log.db", "v1_log.db"]) == "v9_log.db"
assert latest_db_file([]) is None
values = ["a", ".db", "v9.db", "9_log.db", "va9_log.db", "v9a_log.db"]
for invalid_value in values:
with pytest.raises(AssertionError):
latest_db_file([invalid_value])
def run(self):
# First clear up any partially upgraded databases.
#
# A database will be partially upgraded if the process receives a
# SIGKILL/SIGINT while executing migrations. NOTE: It's very probable
# the content of the database remains consistent, because the upgrades
# are executed inside a migration, however making a second copy of the
# database does no harm.
escaped_path = escape(str(self._current_db_filename.parent))
paths = glob(f"{escaped_path}/v*_log.db")
valid_db_names = filter_db_names(paths)
delete_dbs_with_failed_migrations(valid_db_names)
# At this point we know every file version and db version match
# (assuming there are no concurrent runs).
paths = glob(f"{escaped_path}/v*_log.db")
valid_db_names = filter_db_names(paths)
latest_db_path = latest_db_file(valid_db_names)
# First run, there is no database file available
if latest_db_path is None:
return
file_version = get_file_version(latest_db_path)
# The latest version matches our target version, nothing to do.
if file_version == RAIDEN_DB_VERSION:
return
if file_version > RAIDEN_DB_VERSION:
raise RuntimeError(
f"Conflicting database versions detected, latest db version is v{file_version}, "
f"Raiden client version is v{RAIDEN_DB_VERSION}."
f"\n\n"
f"Running a downgraded version of Raiden after an upgrade is not supported, "
f"because the transfers done with the new client are not understandable by the "
f"older."
)
self._upgrade(
target_file=str(self._current_db_filename),
from_file=latest_db_path,
from_version=file_version,
)
def test_latest_db_file():
assert latest_db_file(['v10_log.db', 'v9_log.db']) == 'v10_log.db'
assert latest_db_file(['v9_log.db', 'v10_log.db']) == 'v10_log.db'
assert latest_db_file(['v1_log.db', 'v9_log.db']) == 'v9_log.db'
assert latest_db_file(['v9_log.db', 'v1_log.db']) == 'v9_log.db'
assert latest_db_file([]) is None
values = [
'a',
'.db',
'v9.db',
'9_log.db',
'va9_log.db',
'v9a_log.db',
]
for invalid_value in values:
with pytest.raises(AssertionError):
latest_db_file([invalid_value])
