def update(self, queue, claim_id, metadata, project=None):
if project is None:
project = ''
cid = utils.cid_decode(claim_id)
if cid is None:
raise errors.ClaimDoesNotExist(claim_id, queue, project)
age = utils.get_age(tables.Claims.c.created)
with self.driver.trans() as trans:
qid = utils.get_qid(self.driver, queue, project)
update = tables.Claims.update().where(sa.and_(
tables.Claims.c.ttl > age,
tables.Claims.c.id == cid,
tables.Claims.c.id == qid)).\
values(ttl=metadata['ttl'])
res = trans.execute(update)
if res.rowcount != 1:
raise errors.ClaimDoesNotExist(claim_id, queue, project)
update = (tables.Messages.update().values(
ttl=metadata['ttl']).where(
sa.and_(tables.Messages.c.ttl < metadata['ttl'],
tables.Messages.c.cid == cid)))
trans.execute(update)
def update(self, queue, claim_id, metadata, project=None):
if project is None:
project = ''
cid = utils.cid_decode(claim_id)
if cid is None:
raise errors.ClaimDoesNotExist(claim_id, queue, project)
age = utils.get_age(tables.Claims.c.created)
with self.driver.trans() as trans:
qid = utils.get_qid(self.driver, queue, project)
update = tables.Claims.update().where(sa.and_(
tables.Claims.c.ttl > age,
tables.Claims.c.id == cid,
tables.Claims.c.id == qid)).\
values(ttl=metadata['ttl'])
res = trans.execute(update)
if res.rowcount != 1:
raise errors.ClaimDoesNotExist(claim_id, queue, project)
update = (tables.Messages.update().
values(ttl=metadata['ttl']).
where(sa.and_(
tables.Messages.c.ttl < metadata['ttl'],
tables.Messages.c.cid == cid)))
trans.execute(update)
def post(self, queue, messages, client_uuid, project):
if project is None:
project = ''
with self.driver.trans() as trans:
qid = utils.get_qid(self.driver, queue, project)
# cleanup all expired messages in this queue
#self.driver.run('''
# delete from Messages
# where ttl <= julianday() * 86400.0 - created
# and qid = ?''', qid)
# executemany() sets lastrowid to None, so no matter we manually
# generate the IDs or not, we still need to query for it.
def it():
for m in messages:
yield dict(qid=qid,
ttl=m['ttl'],
body=json.dumps(m['body']),
client=str(client_uuid))
result = trans.execute(tables.Messages.insert(), list(it()))
statement = sa.sql.select([tables.Messages.c.id])
statement = statement.limit(result.rowcount)
statement = statement.order_by(tables.Messages.c.id.desc())
result = trans.execute(statement).fetchall()
return map(utils.msgid_encode, [i[0] for i in reversed(result)])
def delete(self, queue, claim_id, project=None):
if project is None:
project = ''
cid = utils.cid_decode(claim_id)
if cid is None:
return
with self.driver.trans() as trans:
try:
# NOTE(flaper87): This could probably use some
# joins and be just 1 query.
qid = utils.get_qid(self.driver, queue, project)
except errors.QueueDoesNotExist:
return
and_stmt = sa.and_(tables.Claims.c.id == cid,
tables.Claims.c.qid == qid)
dlt = tables.Claims.delete().where(and_stmt)
trans.execute(dlt)
update = (tables.Messages.update().values(cid=None).
where(tables.Messages.c.cid == cid))
trans.execute(update)
def delete(self, queue, claim_id, project=None):
if project is None:
project = ''
cid = utils.cid_decode(claim_id)
if cid is None:
return
with self.driver.trans() as trans:
try:
# NOTE(flaper87): This could probably use some
# joins and be just 1 query.
qid = utils.get_qid(self.driver, queue, project)
except errors.QueueDoesNotExist:
return
and_stmt = sa.and_(tables.Claims.c.id == cid,
tables.Claims.c.qid == qid)
dlt = tables.Claims.delete().where(and_stmt)
trans.execute(dlt)
update = (tables.Messages.update().values(cid=None).
where(tables.Messages.c.cid == cid))
trans.execute(update)
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
])
j = sa.join(tables.Messages, tables.Queues,
tables.Messages.c.qid == tables.Queues.c.id)
sel = sel.select_from(j)
and_clause = [
tables.Queues.c.name == queue_name,
tables.Queues.c.project == 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 in records:
messages.append({
'id':
utils.msgid_encode(id),
'ttl':
ttl,
'age':
now - calendar.timegm(created.timetuple()),
'body':
utils.json_decode(body),
})
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(cid), self.__get(cid))
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(cid), self.__get(cid))
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])
j = sa.join(tables.Messages, tables.Queues,
tables.Messages.c.qid == tables.Queues.c.id)
sel = sel.select_from(j)
and_clause = [tables.Queues.c.name == queue_name,
tables.Queues.c.project == 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 in records:
messages.append({
'id': utils.msgid_encode(id),
'ttl': ttl,
'age': now - calendar.timegm(created.timetuple()),
'body': utils.json_decode(body),
})
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 bulk_delete(self, queue, message_ids, project):
if project is None:
project = ''
message_ids = ','.join(
["'%s'" % id for id in
map(utils.msgid_decode, message_ids) if id]
)
with self.driver.trans() as trans:
qid = utils.get_qid(self.driver, queue, project)
statement = tables.Messages.delete()
and_stmt = [tables.Messages.c.id.in_(message_ids),
tables.Messages.c.qid == qid]
trans.execute(statement.where(sa.and_(*and_stmt)))
def stats(self, name, project):
if project is None:
project = ''
qid = utils.get_qid(self.driver, name, project)
sel = sa.sql.select([
sa.sql.select([sa.func.count(tables.Messages.c.id)],
sa.and_(
tables.Messages.c.qid == qid,
tables.Messages.c.cid != (None),
tables.Messages.c.ttl >
sfunc.now() - tables.Messages.c.created,
)),
sa.sql.select([sa.func.count(tables.Messages.c.id)],
sa.and_(
tables.Messages.c.qid == qid,
tables.Messages.c.cid == (None),
tables.Messages.c.ttl >
sfunc.now() - tables.Messages.c.created,
))
])
claimed, free = self.driver.get(sel)
total = free + claimed
message_stats = {
'claimed': claimed,
'free': free,
'total': total,
}
try:
message_controller = self.driver.message_controller
oldest = message_controller.first(name, project, sort=1)
newest = message_controller.first(name, project, sort=-1)
except errors.QueueIsEmpty:
pass
else:
message_stats['oldest'] = utils.stat_message(oldest)
message_stats['newest'] = utils.stat_message(newest)
return {'messages': message_stats}
def delete(self, queue, claim_id, project=None):
if project is None:
project = ''
cid = utils.cid_decode(claim_id)
if cid is None:
return
with self.driver.trans() as trans:
qid = utils.get_qid(self.driver, queue, project)
and_stmt = sa.and_(tables.Claims.c.id == cid,
tables.Claims.c.qid == qid)
dlt = tables.Claims.delete().where(and_stmt)
trans.execute(dlt)
update = (tables.Messages.update().values(cid=None).where(
tables.Messages.c.cid == cid))
trans.execute(update)
def stats(self, name, project):
if project is None:
project = ''
qid = utils.get_qid(self.driver, name, project)
sel = sa.sql.select([
sa.sql.select([sa.func.count(tables.Messages.c.id)],
sa.and_(
tables.Messages.c.qid == qid,
tables.Messages.c.cid != (None),
tables.Messages.c.ttl >
sfunc.now() - tables.Messages.c.created,
)),
sa.sql.select([sa.func.count(tables.Messages.c.id)],
sa.and_(
tables.Messages.c.qid == qid,
tables.Messages.c.cid == (None),
tables.Messages.c.ttl >
sfunc.now() - tables.Messages.c.created,
))
])
claimed, free = self.driver.get(sel)
total = free + claimed
message_stats = {
'claimed': claimed,
'free': free,
'total': total,
}
try:
message_controller = self.driver.message_controller
oldest = message_controller.first(name, project, sort=1)
newest = message_controller.first(name, project, sort=-1)
except errors.QueueIsEmpty:
pass
else:
message_stats['oldest'] = utils.stat_message(oldest)
message_stats['newest'] = utils.stat_message(newest)
return {'messages': message_stats}
def bulk_delete(self, queue, message_ids, project):
if project is None:
project = ''
message_ids = [id for id in
map(utils.msgid_decode, message_ids) if id]
with self.driver.trans() as trans:
try:
qid = utils.get_qid(self.driver, queue, project)
except errors.QueueDoesNotExist:
return
statement = tables.Messages.delete()
and_stmt = [tables.Messages.c.id.in_(message_ids),
tables.Messages.c.qid == qid]
trans.execute(statement.where(sa.and_(*and_stmt)))
def delete(self, queue, claim_id, project=None):
if project is None:
project = ''
cid = utils.cid_decode(claim_id)
if cid is None:
return
with self.driver.trans() as trans:
qid = utils.get_qid(self.driver, queue, project)
and_stmt = sa.and_(tables.Claims.c.id == cid,
tables.Claims.c.qid == qid)
dlt = tables.Claims.delete().where(and_stmt)
trans.execute(dlt)
update = (tables.Messages.update().values(cid=None).
where(tables.Messages.c.cid == cid))
trans.execute(update)
def bulk_delete(self, queue, message_ids, project):
if project is None:
project = ''
message_ids = [id for id in map(utils.msgid_decode, message_ids) if id]
with self.driver.trans() as trans:
try:
qid = utils.get_qid(self.driver, queue, project)
except errors.QueueDoesNotExist:
return
statement = tables.Messages.delete()
and_stmt = [
tables.Messages.c.id.in_(message_ids),
tables.Messages.c.qid == qid
]
trans.execute(statement.where(sa.and_(*and_stmt)))
def first(self, queue, project=None, sort=1):
if project is None:
project = ''
qid = utils.get_qid(self.driver, queue, project)
sel = sa.sql.select([tables.Messages.c.id,
tables.Messages.c.body,
tables.Messages.c.ttl,
tables.Messages.c.created],
sa.and_(
tables.Messages.c.ttl >
sfunc.now() - tables.Messages.c.created,
tables.Messages.c.qid == qid))
if sort not in (1, -1):
raise ValueError(u'sort must be either 1 (ascending) '
u'or -1 (descending)')
order = sa.asc
if sort == -1:
order = sa.desc
sel = sel.order_by(order(tables.Messages.c.id))
try:
id, body, ttl, created = self.driver.get(sel)
except utils.NoResult:
raise errors.QueueIsEmpty(queue, project)
created_iso = timeutils.isotime(created)
return {
'id': utils.msgid_encode(id),
'ttl': ttl,
'created': created_iso,
'age': int((timeutils.utcnow() - created).seconds),
'body': body,
}
