def _update_atom_details(self, ad, txn, create_missing=False):
# Determine whether the desired data exists or not.
ad_path = paths.join(self.atom_path, ad.uuid)
e_ad = None
try:
ad_data, _zstat = self._client.get(ad_path)
except k_exc.NoNodeError:
# Not-existent: create or raise exception.
raise exc.NotFound("No atom details found with id: %s" % ad.uuid)
else:
# Existent: read it out.
try:
ad_data = misc.decode_json(ad_data)
ad_cls = logbook.atom_detail_class(ad_data['type'])
e_ad = ad_cls.from_dict(ad_data['atom'])
except KeyError:
pass
# Update and write it back
if e_ad:
e_ad = e_ad.merge(ad)
else:
e_ad = ad
ad_data = base._format_atom(e_ad)
txn.set_data(ad_path,
misc.binary_encode(jsonutils.dumps(ad_data)))
return e_ad
def post(self, name, book=None, details=None,
priority=base.JobPriority.NORMAL):
# NOTE(harlowja): Jobs are not ephemeral, they will persist until they
# are consumed (this may change later, but seems safer to do this until
# further notice).
job_priority = base.JobPriority.convert(priority)
job_uuid = uuidutils.generate_uuid()
job_posting = base.format_posting(job_uuid, name,
book=book, details=details,
priority=job_priority)
raw_job_posting = misc.binary_encode(jsonutils.dumps(job_posting))
with self._wrap(job_uuid, None,
fail_msg_tpl="Posting failure: %s",
ensure_known=False):
job_path = self._client.create(self._job_base,
value=raw_job_posting,
sequence=True,
ephemeral=False)
job = ZookeeperJob(self, name, self._client, job_path,
backend=self._persistence,
book=book, details=details, uuid=job_uuid,
book_data=job_posting.get('book'),
priority=job_priority)
with self._job_cond:
self._known_jobs[job_path] = job
self._job_cond.notify_all()
self._try_emit(base.POSTED, details={'job': job})
return job
def _update_flow_details(self, fd, txn, create_missing=False):
# Determine whether the desired data exists or not
fd_path = paths.join(self.flow_path, fd.uuid)
try:
fd_data, _zstat = self._client.get(fd_path)
except k_exc.NoNodeError:
# Not-existent: create or raise exception
if create_missing:
txn.create(fd_path)
e_fd = logbook.FlowDetail(name=fd.name, uuid=fd.uuid)
else:
raise exc.NotFound("No flow details found with id: %s" %
fd.uuid)
else:
# Existent: read it out
e_fd = logbook.FlowDetail.from_dict(misc.decode_json(fd_data))
# Update and write it back
e_fd = e_fd.merge(fd)
fd_data = e_fd.to_dict()
txn.set_data(fd_path, misc.binary_encode(jsonutils.dumps(fd_data)))
for ad in fd:
ad_path = paths.join(fd_path, ad.uuid)
# NOTE(harlowja): create an entry in the flow detail path
# for the provided atom detail so that a reference exists
# from the flow detail to its atom details.
if not self._client.exists(ad_path):
txn.create(ad_path)
e_fd.add(self._update_atom_details(ad, txn, create_missing=True))
return e_fd
def post(self, name, book=None, details=None,
priority=base.JobPriority.NORMAL):
# NOTE(harlowja): Jobs are not ephemeral, they will persist until they
# are consumed (this may change later, but seems safer to do this until
# further notice).
job_priority = base.JobPriority.convert(priority)
job_uuid = uuidutils.generate_uuid()
job_posting = base.format_posting(job_uuid, name,
book=book, details=details,
priority=job_priority)
raw_job_posting = misc.binary_encode(jsonutils.dumps(job_posting))
with self._wrap(job_uuid, None,
fail_msg_tpl="Posting failure: %s",
ensure_known=False):
job_path = self._client.create(self._job_base,
value=raw_job_posting,
sequence=True,
ephemeral=False)
job = ZookeeperJob(self, name, self._client, job_path,
backend=self._persistence,
book=book, details=details, uuid=job_uuid,
book_data=job_posting.get('book'),
priority=job_priority)
with self._job_cond:
self._known_jobs[job_path] = job
self._job_cond.notify_all()
self._try_emit(base.POSTED, details={'job': job})
return job
def _update_flow_details(self, fd, txn, create_missing=False):
# Determine whether the desired data exists or not
fd_path = paths.join(self.flow_path, fd.uuid)
try:
fd_data, _zstat = self._client.get(fd_path)
except k_exc.NoNodeError:
# Not-existent: create or raise exception
if create_missing:
txn.create(fd_path)
e_fd = logbook.FlowDetail(name=fd.name, uuid=fd.uuid)
else:
raise exc.NotFound("No flow details found with id: %s"
% fd.uuid)
else:
# Existent: read it out
e_fd = logbook.FlowDetail.from_dict(misc.decode_json(fd_data))
# Update and write it back
e_fd = e_fd.merge(fd)
fd_data = e_fd.to_dict()
txn.set_data(fd_path, misc.binary_encode(jsonutils.dumps(fd_data)))
for ad in fd:
ad_path = paths.join(fd_path, ad.uuid)
# NOTE(harlowja): create an entry in the flow detail path
# for the provided atom detail so that a reference exists
# from the flow detail to its atom details.
if not self._client.exists(ad_path):
txn.create(ad_path)
e_fd.add(self._update_atom_details(ad, txn, create_missing=True))
return e_fd
def _update_atom_details(self, ad, txn, create_missing=False):
# Determine whether the desired data exists or not.
ad_path = paths.join(self.atom_path, ad.uuid)
e_ad = None
try:
ad_data, _zstat = self._client.get(ad_path)
except k_exc.NoNodeError:
# Not-existent: create or raise exception.
if not create_missing:
raise exc.NotFound("No atom details found with"
" id: %s" % ad.uuid)
else:
txn.create(ad_path)
else:
# Existent: read it out.
try:
ad_data = misc.decode_json(ad_data)
ad_cls = logbook.atom_detail_class(ad_data['type'])
e_ad = ad_cls.from_dict(ad_data['atom'])
except KeyError:
pass
# Update and write it back
if e_ad:
e_ad = e_ad.merge(ad)
else:
e_ad = ad
ad_data = base._format_atom(e_ad)
txn.set_data(ad_path, misc.binary_encode(jsonutils.dumps(ad_data)))
return e_ad
def register_entity(self, entity):
entity_type = entity.kind
if entity_type == c_base.Conductor.ENTITY_KIND:
entity_path = k_paths.join(self.entity_path, entity_type)
try:
self._client.ensure_path(entity_path)
self._client.create(k_paths.join(entity_path, entity.name),
value=misc.binary_encode(
jsonutils.dumps(entity.to_dict())),
ephemeral=True)
except k_exceptions.NodeExistsError:
pass
except self._client.handler.timeout_exception:
excp.raise_with_cause(
excp.JobFailure,
"Can not register entity %s under %s, operation"
" timed out" % (entity.name, entity_path))
except k_exceptions.SessionExpiredError:
excp.raise_with_cause(
excp.JobFailure,
"Can not register entity %s under %s, session"
" expired" % (entity.name, entity_path))
except k_exceptions.KazooException:
excp.raise_with_cause(
excp.JobFailure,
"Can not register entity %s under %s, internal"
" error" % (entity.name, entity_path))
else:
raise excp.NotImplementedError(
"Not implemented for other entity type '%s'" % entity_type)
def register_entity(self, entity):
entity_type = entity.kind
if entity_type == c_base.Conductor.ENTITY_KIND:
entity_path = k_paths.join(self.entity_path, entity_type)
try:
self._client.ensure_path(entity_path)
self._client.create(k_paths.join(entity_path, entity.name),
value=misc.binary_encode(
jsonutils.dumps(entity.to_dict())),
ephemeral=True)
except k_exceptions.NodeExistsError:
pass
except self._client.handler.timeout_exception:
excp.raise_with_cause(
excp.JobFailure,
"Can not register entity %s under %s, operation"
" timed out" % (entity.name, entity_path))
except k_exceptions.SessionExpiredError:
excp.raise_with_cause(
excp.JobFailure,
"Can not register entity %s under %s, session"
" expired" % (entity.name, entity_path))
except k_exceptions.KazooException:
excp.raise_with_cause(
excp.JobFailure,
"Can not register entity %s under %s, internal"
" error" % (entity.name, entity_path))
else:
raise excp.NotImplementedError(
"Not implemented for other entity type '%s'" % entity_type)
def _change_owner(self, new_owner):
children = self.client.storage.get_children("/taskflow", only_direct=False)
altered = 0
for p, data in six.iteritems(children):
if p.endswith(".lock"):
self.client.set(p, misc.binary_encode(jsonutils.dumps({"owner": new_owner})))
altered += 1
return altered
def _change_owner(self, new_owner):
children = self.client.storage.get_children("/taskflow",
only_direct=False)
altered = 0
for p, data in six.iteritems(children):
if p.endswith(".lock"):
self.client.set(p, misc.binary_encode(
jsonutils.dumps({'owner': new_owner})))
altered += 1
return altered
def _create_logbook(lb_path, txn):
lb_data = p_utils.format_logbook(lb, created_at=None)
txn.create(lb_path, misc.binary_encode(jsonutils.dumps(lb_data)))
for fd in lb:
# NOTE(harlowja): create an entry in the logbook path
# for the provided flow detail so that a reference exists
# from the logbook to its flow details.
txn.create(paths.join(lb_path, fd.uuid))
fd_path = paths.join(self.flow_path, fd.uuid)
fd_data = jsonutils.dumps(p_utils.format_flow_detail(fd))
txn.create(fd_path, misc.binary_encode(fd_data))
for td in fd:
# NOTE(harlowja): create an entry in the flow detail path
# for the provided task detail so that a reference exists
# from the flow detail to its task details.
txn.create(paths.join(fd_path, td.uuid))
td_path = paths.join(self.task_path, td.uuid)
td_data = jsonutils.dumps(p_utils.format_task_detail(td))
txn.create(td_path, misc.binary_encode(td_data))
return lb
def _create_logbook(lb_path, txn):
lb_data = p_utils.format_logbook(lb, created_at=None)
txn.create(lb_path, misc.binary_encode(jsonutils.dumps(lb_data)))
for fd in lb:
# NOTE(harlowja): create an entry in the logbook path
# for the provided flow detail so that a reference exists
# from the logbook to its flow details.
txn.create(paths.join(lb_path, fd.uuid))
fd_path = paths.join(self.flow_path, fd.uuid)
fd_data = jsonutils.dumps(p_utils.format_flow_detail(fd))
txn.create(fd_path, misc.binary_encode(fd_data))
for td in fd:
# NOTE(harlowja): create an entry in the flow detail path
# for the provided task detail so that a reference exists
# from the flow detail to its task details.
txn.create(paths.join(fd_path, td.uuid))
td_path = paths.join(self.task_path, td.uuid)
td_data = jsonutils.dumps(p_utils.format_task_detail(td))
txn.create(td_path, misc.binary_encode(td_data))
return lb
def _create_logbook(lb_path, txn):
lb_data = lb.to_dict(marshal_time=True)
txn.create(lb_path, misc.binary_encode(jsonutils.dumps(lb_data)))
for fd in lb:
# NOTE(harlowja): create an entry in the logbook path
# for the provided flow detail so that a reference exists
# from the logbook to its flow details.
txn.create(paths.join(lb_path, fd.uuid))
fd_path = paths.join(self.flow_path, fd.uuid)
fd_data = jsonutils.dumps(fd.to_dict())
txn.create(fd_path, misc.binary_encode(fd_data))
for ad in fd:
# NOTE(harlowja): create an entry in the flow detail path
# for the provided atom detail so that a reference exists
# from the flow detail to its atom details.
txn.create(paths.join(fd_path, ad.uuid))
ad_path = paths.join(self.atom_path, ad.uuid)
ad_data = base._format_atom(ad)
txn.create(ad_path,
misc.binary_encode(jsonutils.dumps(ad_data)))
return lb
def _create_logbook(lb_path, txn):
lb_data = lb.to_dict(marshal_time=True)
txn.create(lb_path, misc.binary_encode(jsonutils.dumps(lb_data)))
for fd in lb:
# NOTE(harlowja): create an entry in the logbook path
# for the provided flow detail so that a reference exists
# from the logbook to its flow details.
txn.create(paths.join(lb_path, fd.uuid))
fd_path = paths.join(self.flow_path, fd.uuid)
fd_data = jsonutils.dumps(fd.to_dict())
txn.create(fd_path, misc.binary_encode(fd_data))
for ad in fd:
# NOTE(harlowja): create an entry in the flow detail path
# for the provided atom detail so that a reference exists
# from the flow detail to its atom details.
txn.create(paths.join(fd_path, ad.uuid))
ad_path = paths.join(self.atom_path, ad.uuid)
ad_data = base._format_atom(ad)
txn.create(ad_path,
misc.binary_encode(jsonutils.dumps(ad_data)))
return lb
def _format_job(self, job):
posting = {
'uuid': job.uuid,
'name': job.name,
}
if job.details is not None:
posting['details'] = job.details
if job.book is not None:
posting['book'] = {
'name': job.book.name,
'uuid': job.book.uuid,
}
return misc.binary_encode(jsonutils.dumps(posting))
def _format_job(self, job):
posting = {
'uuid': job.uuid,
'name': job.name,
}
if job.details is not None:
posting['details'] = job.details
if job.book is not None:
posting['book'] = {
'name': job.book.name,
'uuid': job.book.uuid,
}
return misc.binary_encode(jsonutils.dumps(posting))
def claim(self, job, who):
def _unclaimable_try_find_owner(cause):
try:
owner = self.find_owner(job)
except Exception:
owner = None
if owner:
message = "Job %s already claimed by '%s'" % (job.uuid, owner)
else:
message = "Job %s already claimed" % (job.uuid)
excp.raise_with_cause(excp.UnclaimableJob, message, cause=cause)
with self._wrap(job.uuid,
job.path,
fail_msg_tpl="Claiming failure: %s"):
# NOTE(harlowja): post as json which will allow for future changes
# more easily than a raw string/text.
value = jsonutils.dumps({
'owner': who,
})
# Ensure the target job is still existent (at the right version).
job_data, job_stat = self._client.get(job.path)
txn = self._client.transaction()
# This will abort (and not create the lock) if the job has been
# removed (somehow...) or updated by someone else to a different
# version...
txn.check(job.path, version=job_stat.version)
txn.create(job.lock_path,
value=misc.binary_encode(value),
ephemeral=True)
try:
kazoo_utils.checked_commit(txn)
except k_exceptions.NodeExistsError as e:
_unclaimable_try_find_owner(e)
except kazoo_utils.KazooTransactionException as e:
if len(e.failures) < 2:
raise
else:
if isinstance(e.failures[0], k_exceptions.NoNodeError):
excp.raise_with_cause(
excp.NotFound,
"Job %s not found to be claimed" % job.uuid,
cause=e.failures[0])
if isinstance(e.failures[1], k_exceptions.NodeExistsError):
_unclaimable_try_find_owner(e.failures[1])
else:
excp.raise_with_cause(
excp.UnclaimableJob,
"Job %s claim failed due to transaction"
" not succeeding" % (job.uuid),
cause=e)
def join(self, key_piece, *more_key_pieces):
"""Create and return a namespaced key from many segments.
NOTE(harlowja): all pieces that are text/unicode are converted into
their binary equivalent (if they are already binary no conversion
takes place) before being joined (as redis expects binary keys and not
unicode/text ones).
"""
namespace_pieces = []
if self._namespace is not None:
namespace_pieces = [self._namespace, self.NAMESPACE_SEP]
else:
namespace_pieces = []
key_pieces = [key_piece]
if more_key_pieces:
key_pieces.extend(more_key_pieces)
for i in compat_range(0, len(namespace_pieces)):
namespace_pieces[i] = misc.binary_encode(namespace_pieces[i])
for i in compat_range(0, len(key_pieces)):
key_pieces[i] = misc.binary_encode(key_pieces[i])
namespace = b"".join(namespace_pieces)
key = self.KEY_PIECE_SEP.join(key_pieces)
return namespace + key
def claim(self, job, who):
def _unclaimable_try_find_owner(cause):
try:
owner = self.find_owner(job)
except Exception:
owner = None
if owner:
message = "Job %s already claimed by '%s'" % (job.uuid, owner)
else:
message = "Job %s already claimed" % (job.uuid)
excp.raise_with_cause(excp.UnclaimableJob,
message, cause=cause)
with self._wrap(job.uuid, job.path,
fail_msg_tpl="Claiming failure: %s"):
# NOTE(harlowja): post as json which will allow for future changes
# more easily than a raw string/text.
value = jsonutils.dumps({
'owner': who,
})
# Ensure the target job is still existent (at the right version).
job_data, job_stat = self._client.get(job.path)
txn = self._client.transaction()
# This will abort (and not create the lock) if the job has been
# removed (somehow...) or updated by someone else to a different
# version...
txn.check(job.path, version=job_stat.version)
txn.create(job.lock_path, value=misc.binary_encode(value),
ephemeral=True)
try:
kazoo_utils.checked_commit(txn)
except k_exceptions.NodeExistsError as e:
_unclaimable_try_find_owner(e)
except kazoo_utils.KazooTransactionException as e:
if len(e.failures) < 2:
raise
else:
if isinstance(e.failures[0], k_exceptions.NoNodeError):
excp.raise_with_cause(
excp.NotFound,
"Job %s not found to be claimed" % job.uuid,
cause=e.failures[0])
if isinstance(e.failures[1], k_exceptions.NodeExistsError):
_unclaimable_try_find_owner(e.failures[1])
else:
excp.raise_with_cause(
excp.UnclaimableJob,
"Job %s claim failed due to transaction"
" not succeeding" % (job.uuid), cause=e)
def _update_logbook(lb_path, lb_data, txn):
e_lb = p_utils.unformat_logbook(lb.uuid, misc.decode_json(lb_data))
e_lb = p_utils.logbook_merge(e_lb, lb)
lb_data = p_utils.format_logbook(e_lb, created_at=lb.created_at)
txn.set_data(lb_path, misc.binary_encode(jsonutils.dumps(lb_data)))
for fd in lb:
fd_path = paths.join(lb_path, fd.uuid)
if not self._client.exists(fd_path):
# NOTE(harlowja): create an entry in the logbook path
# for the provided flow detail so that a reference exists
# from the logbook to its flow details.
txn.create(fd_path)
e_fd = self._update_flow_details(fd, txn, create_missing=True)
e_lb.add(e_fd)
return e_lb
def register_entity(self, entity):
entity_type = entity.kind
if entity_type == 'conductor':
entity_path = k_paths.join(self.entity_path, entity_type)
self._client.ensure_path(entity_path)
conductor_name = entity.name
self._client.create(k_paths.join(entity_path,
conductor_name),
value=misc.binary_encode(
jsonutils.dumps(entity.to_dict())),
ephemeral=True)
else:
raise excp.NotImplementedError(
"Not implemented for other entity type '%s'" % entity_type)
def _update_logbook(lb_path, lb_data, txn):
e_lb = p_utils.unformat_logbook(lb.uuid, misc.decode_json(lb_data))
e_lb = p_utils.logbook_merge(e_lb, lb)
lb_data = p_utils.format_logbook(e_lb, created_at=lb.created_at)
txn.set_data(lb_path, misc.binary_encode(jsonutils.dumps(lb_data)))
for fd in lb:
fd_path = paths.join(lb_path, fd.uuid)
if not self._client.exists(fd_path):
# NOTE(harlowja): create an entry in the logbook path
# for the provided flow detail so that a reference exists
# from the logbook to its flow details.
txn.create(fd_path)
e_fd = self._update_flow_details(fd, txn, create_missing=True)
e_lb.add(e_fd)
return e_lb
def _update_logbook(lb_path, lb_data, txn):
e_lb = logbook.LogBook.from_dict(misc.decode_json(lb_data),
unmarshal_time=True)
e_lb = e_lb.merge(lb)
lb_data = e_lb.to_dict(marshal_time=True)
txn.set_data(lb_path, misc.binary_encode(jsonutils.dumps(lb_data)))
for fd in lb:
fd_path = paths.join(lb_path, fd.uuid)
if not self._client.exists(fd_path):
# NOTE(harlowja): create an entry in the logbook path
# for the provided flow detail so that a reference exists
# from the logbook to its flow details.
txn.create(fd_path)
e_fd = self._update_flow_details(fd, txn, create_missing=True)
e_lb.add(e_fd)
return e_lb
def _update_logbook(lb_path, lb_data, txn):
e_lb = logbook.LogBook.from_dict(misc.decode_json(lb_data),
unmarshal_time=True)
e_lb = e_lb.merge(lb)
lb_data = e_lb.to_dict(marshal_time=True)
txn.set_data(lb_path, misc.binary_encode(jsonutils.dumps(lb_data)))
for fd in lb:
fd_path = paths.join(lb_path, fd.uuid)
if not self._client.exists(fd_path):
# NOTE(harlowja): create an entry in the logbook path
# for the provided flow detail so that a reference exists
# from the logbook to its flow details.
txn.create(fd_path)
e_fd = self._update_flow_details(fd, txn, create_missing=True)
e_lb.add(e_fd)
return e_lb
def post(self, name, book=None, details=None):
def format_posting(job_uuid):
posting = {
'uuid': job_uuid,
'name': name,
}
if details:
posting['details'] = details
else:
posting['details'] = {}
if book is not None:
posting['book'] = {
'name': book.name,
'uuid': book.uuid,
}
return posting
# NOTE(harlowja): Jobs are not ephemeral, they will persist until they
# are consumed (this may change later, but seems safer to do this until
# further notice).
job_uuid = uuidutils.generate_uuid()
with self._wrap(job_uuid,
None,
"Posting failure: %s",
ensure_known=False):
job_posting = format_posting(job_uuid)
job_posting = misc.binary_encode(jsonutils.dumps(job_posting))
job_path = self._client.create(self._job_base,
value=job_posting,
sequence=True,
ephemeral=False)
job = ZookeeperJob(name,
self,
self._client,
self._persistence,
job_path,
book=book,
details=details,
uuid=job_uuid)
with self._job_cond:
self._known_jobs[job_path] = job
self._job_cond.notify_all()
self._emit(base.POSTED, details={'job': job})
return job
def post(self, name, book, details=None):
def format_posting(job_uuid):
posting = {
'uuid': job_uuid,
'name': name,
}
if details:
posting['details'] = details
else:
posting['details'] = {}
if book is not None:
posting['book'] = {
'name': book.name,
'uuid': book.uuid,
}
return posting
# NOTE(harlowja): Jobs are not ephemeral, they will persist until they
# are consumed (this may change later, but seems safer to do this until
# further notice).
job_uuid = uuidutils.generate_uuid()
with self._wrap(job_uuid, None,
"Posting failure: %s", ensure_known=False):
job_posting = format_posting(job_uuid)
job_posting = misc.binary_encode(jsonutils.dumps(job_posting))
job_path = self._client.create(self._job_base,
value=job_posting,
sequence=True,
ephemeral=False)
job = ZookeeperJob(name, self, self._client,
self._persistence, job_path,
book=book, details=details,
uuid=job_uuid)
self._job_cond.acquire()
try:
self._known_jobs[job_path] = job
self._job_cond.notify_all()
finally:
self._job_cond.release()
self._emit(jobboard.POSTED, details={'job': job})
return job
def test_posting_owner_lost(self):
with base.connect_close(self.board):
with base.flush(self.client):
j = self.board.post('test', p_utils.temporary_log_book())
self.assertEqual(states.UNCLAIMED, j.state)
with base.flush(self.client):
self.board.claim(j, self.board.name)
self.assertEqual(states.CLAIMED, j.state)
# Forcefully delete the owner from the backend storage to make
# sure the job becomes unclaimed (this may happen if some admin
# manually deletes the lock).
paths = list(six.iteritems(self.client.storage.paths))
for (path, value) in paths:
if path in self.bad_paths:
continue
if path.endswith('lock'):
value['data'] = misc.binary_encode(jsonutils.dumps({}))
self.assertEqual(states.UNCLAIMED, j.state)
def trash(self, job, who):
with self._wrap(job.uuid, job.path, "Trash failure: %s"):
try:
owner_data = self._get_owner_and_data(job)
lock_data, lock_stat, data, data_stat = owner_data
except k_exceptions.NoNodeError:
excp.raise_with_cause(excp.JobFailure,
"Can not trash a job %s"
" which we can not determine"
" the owner of" % (job.uuid))
if lock_data.get("owner") != who:
raise excp.JobFailure("Can not trash a job %s"
" which is not owned by %s"
% (job.uuid, who))
trash_path = job.path.replace(self.path, self.trash_path)
value = misc.binary_encode(jsonutils.dumps(data))
txn = self._client.transaction()
txn.create(trash_path, value=value)
txn.delete(job.lock_path, version=lock_stat.version)
txn.delete(job.path, version=data_stat.version)
kazoo_utils.checked_commit(txn)
def trash(self, job, who):
with self._wrap(job.uuid, job.path, fail_msg_tpl="Trash failure: %s"):
try:
owner_data = self._get_owner_and_data(job)
lock_data, lock_stat, data, data_stat = owner_data
except k_exceptions.NoNodeError:
excp.raise_with_cause(
excp.NotFound, "Can not trash a job %s"
" which we can not determine"
" the owner of" % (job.uuid))
if lock_data.get("owner") != who:
raise excp.JobFailure("Can not trash a job %s"
" which is not owned by %s" %
(job.uuid, who))
trash_path = job.path.replace(self.path, self.trash_path)
value = misc.binary_encode(jsonutils.dumps(data))
txn = self._client.transaction()
txn.create(trash_path, value=value)
txn.delete(job.lock_path, version=lock_stat.version)
txn.delete(job.path, version=data_stat.version)
kazoo_utils.checked_commit(txn)
def claim(self, job, who):
_check_who(who)
with self._wrap(job.uuid, job.path, "Claiming failure: %s"):
# NOTE(harlowja): post as json which will allow for future changes
# more easily than a raw string/text.
value = jsonutils.dumps({
'owner': who,
})
try:
self._client.create(job.lock_path,
value=misc.binary_encode(value),
ephemeral=True)
except k_exceptions.NodeExistsException:
# Try to see if we can find who the owner really is...
try:
owner = self.find_owner(job)
except Exception:
owner = None
if owner:
msg = "Job %s already claimed by '%s'" % (job.uuid, owner)
else:
msg = "Job %s already claimed" % (job.uuid)
raise excp.UnclaimableJob(msg)
def _update_task_details(self, td, txn, create_missing=False):
# Determine whether the desired data exists or not.
td_path = paths.join(self.task_path, td.uuid)
try:
td_data, _zstat = self._client.get(td_path)
except k_exc.NoNodeError:
# Not-existent: create or raise exception.
if create_missing:
txn.create(td_path)
e_td = logbook.TaskDetail(name=td.name, uuid=td.uuid)
else:
raise exc.NotFound("No task details found with id: %s"
% td.uuid)
else:
# Existent: read it out.
e_td = p_utils.unformat_task_detail(td.uuid,
misc.decode_json(td_data))
# Update and write it back
e_td = p_utils.task_details_merge(e_td, td)
td_data = p_utils.format_task_detail(e_td)
txn.set_data(td_path, misc.binary_encode(jsonutils.dumps(td_data)))
return e_td
def _update_task_details(self, td, txn, create_missing=False):
# Determine whether the desired data exists or not.
td_path = paths.join(self.task_path, td.uuid)
try:
td_data, _zstat = self._client.get(td_path)
except k_exc.NoNodeError:
# Not-existent: create or raise exception.
if create_missing:
txn.create(td_path)
e_td = logbook.TaskDetail(name=td.name, uuid=td.uuid)
else:
raise exc.NotFound("No task details found with id: %s" %
td.uuid)
else:
# Existent: read it out.
e_td = p_utils.unformat_task_detail(td.uuid,
misc.decode_json(td_data))
# Update and write it back
e_td = p_utils.task_details_merge(e_td, td)
td_data = p_utils.format_task_detail(e_td)
txn.set_data(td_path, misc.binary_encode(jsonutils.dumps(td_data)))
return e_td
def claim(self, job, who):
_check_who(who)
job_path, lock_path = _get_paths(self.path, job.uuid)
with self._wrap(job.uuid, "Claiming failure: %s"):
# NOTE(harlowja): post as json which will allow for future changes
# more easily than a raw string/text.
value = jsonutils.dumps({
'owner': who,
})
try:
self._client.create(lock_path,
value=misc.binary_encode(value),
ephemeral=True)
except k_exceptions.NodeExistsException:
# Try to see if we can find who the owner really is...
try:
owner = self.find_owner(job)
except Exception:
owner = None
if owner:
msg = "Job %s already claimed by '%s'" % (job.uuid, owner)
else:
msg = "Job %s already claimed" % (job.uuid)
raise excp.UnclaimableJob(msg)
def _set_item(self, path, value, transaction):
data = misc.binary_encode(jsonutils.dumps(value))
if not self._client.exists(path):
transaction.create(path, data)
else:
transaction.set_data(path, data)
def test_unicode_other_encoding(self):
result = misc.binary_encode(u'mañana', 'latin-1')
self.assertIsInstance(result, six.binary_type)
self.assertEqual(result, u'mañana'.encode('latin-1'))
def _check(self, data, expected_result):
result = misc.binary_encode(data)
self.assertIsInstance(result, six.binary_type)
self.assertEqual(result, expected_result)
def test_unicode_other_encoding(self):
result = misc.binary_encode(u'mañana', 'latin-1')
self.assertIsInstance(result, six.binary_type)
self.assertEqual(result, u'mañana'.encode('latin-1'))
def _write_to(self, filename, contents):
contents = misc.binary_encode(contents, encoding=self.backend.encoding)
with open(filename, 'wb') as fp:
fp.write(contents)
self.backend.file_cache.pop(filename, None)
def _check(self, data, expected_result):
result = misc.binary_encode(data)
self.assertIsInstance(result, six.binary_type)
self.assertEqual(result, expected_result)
def _set_item(self, path, value, transaction):
data = misc.binary_encode(jsonutils.dumps(value))
if not self._client.exists(path):
transaction.create(path, data)
else:
transaction.set_data(path, data)
def _write_to(self, filename, contents):
contents = misc.binary_encode(contents,
encoding=self.backend.encoding)
with open(filename, 'wb') as fp:
fp.write(contents)
self.backend.file_cache.pop(filename, None)
def test_unicode_other_encoding(self):
result = misc.binary_encode(u"mañana", "latin-1")
self.assertIsInstance(result, six.binary_type)
self.assertEqual(result, u"mañana".encode("latin-1"))
