def process_incoming(self, link, connection):
key = (connection.container_id, link.name)
target = self.targets[key]
xfr = link.get()
if not isinstance(target, TxnTarget):
if xfr.state:
txn = self.coordinator.get_transaction(xfr.state)
else:
txn = None
else:
txn = None
disp = target.put(xfr.delivery_tag, xfr, owner=txn)
if txn:
xdisp = TransactionalState(txn.txn_id, disp)
def doit(t=xfr.delivery_tag, d=disp, xd=xdisp):
target.settle(t, d)
link.settle(t, xd)
def undo(t=xfr.delivery_tag):
target.settle(t, None)
link.settle(t, None)
txn.add_work(doit, undo)
disp=xdisp
link.disposition(xfr.delivery_tag, disp)
if not txn:
# XXX: enums
if link.rcv_settle_mode == 0:
link.settle(xfr.delivery_tag)
def process_sender(self, link, connection):
if link.source is None: return
key = (connection.container_id, link.name)
source = self.sources[key]
while link.capacity() > 0:
tag, xfr = source.get()
if xfr is None:
link.drained()
break
else:
link.send(delivery_tag = tag, message_format = xfr.message_format,
settled = link.snd_settle_mode == 1, # XXX: enums
payload = xfr.payload)
for t, l, r in link.get_remote(modified=True):
if l.resumed:
link.settle(t, None)
elif r.settled or r.state is not None:
def doit(t=t, s=r.state):
state = source.settle(t, r.state)
link.settle(t, state)
def undo(t=t):
pass
if r.state:
txn = self.coordinator.get_transaction(r.state)
else:
txn = None
if txn:
txn.add_work(doit, undo)
else:
doit()
r.modified = False
def process_receiver(self, link, connection):
if link.target is None: return
key = (connection.container_id, link.name)
target = self.targets[key]
for t, l, r in link.get_remote():
if l.resumed:
link.settle(t, None)
elif r.settled and not isinstance(l.state, TransactionalState):
state = target.settle(t, l.state)
link.settle(t, state)
if target.capacity() and link.credit() < 10: link.flow(10)
def undo(t=xfr.delivery_tag): target.settle(t, None) link.settle(t, None)
def doit(t=xfr.delivery_tag, d=disp, xd=xdisp): target.settle(t, d) link.settle(t, xd)
def doit(t=t, s=r.state): state = source.settle(t, r.state) link.settle(t, state)