def bulk_get(self, queue, message_ids, project):
if project is None:
project = ''
message_ids = [
id for id in map(utils.msgid_decode, message_ids) if id is not None
]
statement = sa.sql.select([
tables.Messages.c.id, tables.Messages.c.body,
tables.Messages.c.ttl, tables.Messages.c.created,
tables.Messages.c.cid
])
and_stmt = [tables.Messages.c.id.in_(message_ids)]
and_stmt.extend(self._and_stmt_with_ttl(queue, project))
j = sa.join(tables.Messages, tables.Queues,
tables.Messages.c.qid == tables.Queues.c.id)
statement = statement.select_from(j).where(sa.and_(*and_stmt))
now = timeutils.utcnow_ts()
records = self.driver.run(statement)
for id, body, ttl, created, cid in records:
yield {
'id': utils.msgid_encode(int(id)),
'ttl': ttl,
'age': now - calendar.timegm(created.timetuple()),
'body': utils.json_decode(body),
'claim_id': utils.cid_encode(cid) if cid else None,
}
def bulk_get(self, queue, message_ids, project):
if project is None:
project = ''
message_ids = [id for id in
map(utils.msgid_decode, message_ids)
if id is not None]
statement = sa.sql.select([tables.Messages.c.id,
tables.Messages.c.body,
tables.Messages.c.ttl,
tables.Messages.c.created,
tables.Messages.c.cid])
and_stmt = [tables.Messages.c.id.in_(message_ids)]
and_stmt.extend(self._and_stmt_with_ttl(queue, project))
j = sa.join(tables.Messages, tables.Queues,
tables.Messages.c.qid == tables.Queues.c.id)
statement = statement.select_from(j).where(sa.and_(*and_stmt))
now = timeutils.utcnow_ts()
records = self.driver.run(statement)
for id, body, ttl, created, cid in records:
yield {
'id': utils.msgid_encode(int(id)),
'ttl': ttl,
'age': now - calendar.timegm(created.timetuple()),
'body': utils.json_decode(body),
'claim_id': utils.cid_encode(cid) if cid else None,
}
def get(self, queue, message_id, project):
body, ttl, created, cid = self._get(queue, message_id, project)
now = timeutils.utcnow_ts()
return {
'id': message_id,
'ttl': ttl,
'age': now - calendar.timegm(created.timetuple()),
'body': utils.json_decode(body),
'claim_id': utils.cid_encode(cid) if cid else None,
}
def get(self, queue, message_id, project):
body, ttl, created, cid = self._get(queue, message_id, project)
now = timeutils.utcnow_ts()
return {
'id': message_id,
'ttl': ttl,
'age': now - calendar.timegm(created.timetuple()),
'body': utils.json_decode(body),
'claim_id': utils.cid_encode(cid) if cid else None,
}
def it():
now = timeutils.utcnow_ts()
for id, body, ttl, created, cid in records:
marker_id['next'] = id
yield {
'id': utils.msgid_encode(id),
'ttl': ttl,
'age': now - calendar.timegm(created.timetuple()),
'body': utils.json_decode(body),
'claim_id': utils.cid_encode(cid) if cid else None,
}
def it():
now = timeutils.utcnow_ts()
for id, body, ttl, created, cid in records:
marker_id['next'] = id
yield {
'id': utils.msgid_encode(id),
'ttl': ttl,
'age': now - calendar.timegm(created.timetuple()),
'body': utils.json_decode(body),
'claim_id': utils.cid_encode(cid) if cid else None,
}
def pop(self, queue_name, limit, project=None):
if project is None:
project = ''
with self.driver.trans() as trans:
sel = sa.sql.select([
tables.Messages.c.id, tables.Messages.c.body,
tables.Messages.c.ttl, tables.Messages.c.created,
tables.Messages.c.cid
])
j = sa.join(tables.Messages, tables.Queues,
tables.Messages.c.qid == tables.Queues.c.id)
sel = sel.select_from(j)
and_clause = self._and_stmt_with_ttl(queue_name, project)
and_clause.append(tables.Messages.c.cid == (None))
sel = sel.where(sa.and_(*and_clause))
sel = sel.limit(limit)
records = trans.execute(sel)
now = timeutils.utcnow_ts()
messages = []
message_ids = []
for id, body, ttl, created, cid in records:
messages.append({
'id':
utils.msgid_encode(id),
'ttl':
ttl,
'age':
now - calendar.timegm(created.timetuple()),
'body':
utils.json_decode(body),
'claim_id':
utils.cid_encode(cid) if cid else None,
})
message_ids.append(id)
statement = tables.Messages.delete()
qid = utils.get_qid(self.driver, queue_name, project)
and_stmt = [
tables.Messages.c.id.in_(message_ids),
tables.Messages.c.qid == qid
]
trans.execute(statement.where(sa.and_(*and_stmt)))
return messages
def create(self,
queue,
metadata,
project=None,
limit=storage.DEFAULT_MESSAGES_PER_CLAIM):
if project is None:
project = ''
with self.driver.trans() as trans:
try:
qid = utils.get_qid(self.driver, queue, project)
except errors.QueueDoesNotExist:
return None, iter([])
# Clean up all expired claims in this queue
dlt = tables.Claims.delete().where(
sa.and_(
tables.Claims.c.ttl <= utils.get_age(
tables.Claims.c.created), tables.Claims.c.qid == qid))
trans.execute(dlt)
ins = tables.Claims.insert().values(qid=qid, ttl=metadata['ttl'])
res = trans.execute(ins)
cid = res.lastrowid
and_stmt = sa.and_(
tables.Messages.c.cid == (None), tables.Messages.c.ttl >
sfunc.now() - tables.Messages.c.created,
tables.Messages.c.qid == qid)
sel = sa.sql.select([tables.Messages.c.id], and_stmt).limit(limit)
records = [t[0] for t in trans.execute(sel)]
and_stmt = sa.and_(tables.Messages.c.id.in_(records))
update = tables.Messages.update().values(cid=cid).where(and_stmt)
trans.execute(update)
# NOTE(flaper87): I bet there's a better way
# to do this.
messages_ttl = metadata['ttl'] + metadata['grace']
update = (tables.Messages.update().values(ttl=messages_ttl).where(
sa.and_(tables.Messages.c.ttl < messages_ttl,
tables.Messages.c.cid == cid)))
trans.execute(update)
return (utils.cid_encode(int(cid)), list(self.__get(cid, trans)))
def pop(self, queue_name, limit, project=None):
if project is None:
project = ''
with self.driver.trans() as trans:
sel = sa.sql.select([tables.Messages.c.id,
tables.Messages.c.body,
tables.Messages.c.ttl,
tables.Messages.c.created,
tables.Messages.c.cid])
j = sa.join(tables.Messages, tables.Queues,
tables.Messages.c.qid == tables.Queues.c.id)
sel = sel.select_from(j)
and_clause = self._and_stmt_with_ttl(queue_name, project)
and_clause.append(tables.Messages.c.cid == (None))
sel = sel.where(sa.and_(*and_clause))
sel = sel.limit(limit)
records = trans.execute(sel)
now = timeutils.utcnow_ts()
messages = []
message_ids = []
for id, body, ttl, created, cid in records:
messages.append({
'id': utils.msgid_encode(id),
'ttl': ttl,
'age': now - calendar.timegm(created.timetuple()),
'body': utils.json_decode(body),
'claim_id': utils.cid_encode(cid) if cid else None,
})
message_ids.append(id)
statement = tables.Messages.delete()
qid = utils.get_qid(self.driver, queue_name, project)
and_stmt = [tables.Messages.c.id.in_(message_ids),
tables.Messages.c.qid == qid]
trans.execute(statement.where(sa.and_(*and_stmt)))
return messages
def create(self, queue, metadata, project=None,
limit=storage.DEFAULT_MESSAGES_PER_CLAIM):
if project is None:
project = ''
with self.driver.trans() as trans:
try:
qid = utils.get_qid(self.driver, queue, project)
except errors.QueueDoesNotExist:
return None, iter([])
# Clean up all expired claims in this queue
dlt = tables.Claims.delete().where(sa.and_(
tables.Claims.c.ttl <=
utils.get_age(tables.Claims.c.created),
tables.Claims.c.qid == qid))
trans.execute(dlt)
ins = tables.Claims.insert().values(qid=qid, ttl=metadata['ttl'])
res = trans.execute(ins)
cid = res.lastrowid
and_stmt = sa.and_(tables.Messages.c.cid == (None),
tables.Messages.c.ttl >
sfunc.now() - tables.Messages.c.created,
tables.Messages.c.qid == qid)
sel = sa.sql.select([tables.Messages.c.id], and_stmt).limit(limit)
records = [t[0] for t in trans.execute(sel)]
and_stmt = sa.and_(tables.Messages.c.id.in_(records))
update = tables.Messages.update().values(cid=cid).where(and_stmt)
trans.execute(update)
# NOTE(flaper87): I bet there's a better way
# to do this.
messages_ttl = metadata['ttl'] + metadata['grace']
update = (tables.Messages.update().values(ttl=messages_ttl).
where(sa.and_(
tables.Messages.c.ttl < messages_ttl,
tables.Messages.c.cid == cid)))
trans.execute(update)
return (utils.cid_encode(int(cid)), list(self.__get(cid, trans)))