def __init__(self, repo, spawn_kwargs):
# Note that repo.location cannot substitute for repo.user_location here,
# since we manage a symlink that resides at repo.user_location, and
# repo.location is the irreversible result of realpath(repo.user_location).
self._user_location = repo.user_location
self._spawn_kwargs = spawn_kwargs
if not repo.sync_allow_hardlinks:
raise RepoStorageException(
"repos.conf sync-rcu setting"
" for repo '%s' requires that sync-allow-hardlinks be enabled"
% repo.name)
# Raise an exception if repo.sync_rcu_store_dir is unset, since the
# user needs to be aware of this location for bind mount and chroot
# scenarios
if not repo.sync_rcu_store_dir:
raise RepoStorageException(
"repos.conf sync-rcu setting"
" for repo '%s' requires that sync-rcu-store-dir be set" %
repo.name)
self._storage_location = repo.sync_rcu_store_dir
if repo.sync_rcu_spare_snapshots is None or repo.sync_rcu_spare_snapshots < 0:
self._spare_snapshots = 1
else:
self._spare_snapshots = repo.sync_rcu_spare_snapshots
if self._spare_snapshots < 0:
self._spare_snapshots = 0
if repo.sync_rcu_ttl_days is None or repo.sync_rcu_ttl_days < 0:
self._ttl_days = 1
else:
self._ttl_days = repo.sync_rcu_ttl_days
self._update_location = None
self._latest_symlink = os.path.join(self._storage_location, 'latest')
self._latest_canonical = os.path.realpath(self._latest_symlink)
if not os.path.exists(self._latest_canonical) or os.path.islink(
self._latest_canonical):
# It doesn't exist, or it's a broken symlink.
self._latest_canonical = None
self._snapshots_dir = os.path.join(self._storage_location, 'snapshots')
async def _check_call(self, cmd):
"""
Run cmd and raise RepoStorageException on failure.
@param cmd: command to executre
@type cmd: list
"""
p = SpawnProcess(args=cmd,
scheduler=asyncio.get_event_loop(),
**self._spawn_kwargs)
p.start()
if await p.async_wait() != os.EX_OK:
raise RepoStorageException('command exited with status {}: {}'.\
format(p.returncode, ' '.join(cmd)))
def _check_call(self, cmd, privileged=False):
"""
Run cmd and raise RepoStorageException on failure.
@param cmd: command to executre
@type cmd: list
@param privileged: run with maximum privileges
@type privileged: bool
"""
if privileged:
kwargs = dict(fd_pipes=self._spawn_kwargs.get('fd_pipes'))
else:
kwargs = self._spawn_kwargs
p = SpawnProcess(args=cmd, scheduler=asyncio._wrap_loop(), **kwargs)
p.start()
if (yield p.async_wait()) != os.EX_OK:
raise RepoStorageException('command exited with status {}: {}'.\
format(p.returncode, ' '.join(cmd)))
def current_update(self):
if self._update_location is None:
raise RepoStorageException('current update does not exist')
return self._update_location
