def __call__(self, db: dolt.Dolt):
starting_head = db.head
starting_branch = db.active_branch
try:
self.checkout(db)
yield db
finally:
self.merge(db, starting_branch)
db.checkout(starting_branch, error=False)
def _get_db(self, config: DoltConfig):
if config.id in self._dbcache:
return self._dbcache[config.id]
# TODO: clone remote
try:
Dolt.init(repo_dir=config.database)
except DoltException as e:
pass
if ".dolt" not in os.listdir(config.database):
raise ValueError(
f"Passed a path {config.database} that is not a Dolt database directory"
)
doltdb = Dolt(repo_dir=config.database)
current_branch, branches = doltdb.branch()
logger.info(
f"Dolt database in {config.database} at branch {current_branch.name}, using branch {config.branch}"
)
if config.branch == current_branch.name:
pass
elif config.branch not in [branch.name for branch in branches]:
raise ValueError(f"Passed branch '{config.branch}' that does not exist")
else:
doltdb.checkout(config.branch, checkout_branch=False)
if not doltdb.status().is_clean:
raise Exception(
"DoltDT as context manager requires clean working set for transaction semantics"
)
if not config.commit:
config.commit = self._get_latest_commit_hash(doltdb)
self._dbcache[config.id] = doltdb
return doltdb
def checkout(self, db: dolt.Dolt):
# branch must exist
db.checkout(branch=self.branch, error=False)
def test_checkout_non_existent_branch(doltdb):
repo = Dolt(doltdb)
repo.checkout("main")