def test_get_msgs_from_rxMsgs_queue(create_node_and_not_start, looper):
node = create_node_and_not_start
node.view_changer = create_view_changer(node)
node.view_changer.pre_vc_strategy = VCStartMsgStrategy(view_changer, node)
node.view_changer.view_no = 0
"""pre_view_change stage"""
node.view_changer.start_view_change(1)
assert node.view_changer.view_no == 0
prepare = Prepare(
0,
0,
1,
get_utc_epoch(),
'f99937241d4c891c08e92a3cc25966607315ca66b51827b170d492962d58a9be',
'CZecK1m7VYjSNCC7pGHj938DSW2tfbqoJp1bMJEtFqvG',
'7WrAMboPTcMaQCU1raoj28vnhu2bPMMd2Lr9tEcsXeCJ')
inst_change = InstanceChange(1, 25)
m = node.nodeInBox.popleft()
assert isinstance(m[0], ViewChangeStartMessage)
node.nodestack.addRemote('someNode', genHa(), b'1DYuELN<SHbv1?NJ=][4De%^Hge887B0I!s<YGdD', 'pubkey')
node.nodestack.rxMsgs.append((json.dumps(prepare._asdict()), 'pubkey'))
node.nodestack.rxMsgs.append((json.dumps(inst_change._asdict()), 'pubkey'))
node.msgHasAcceptableViewNo = lambda *args, **kwargs: True
"""While processing ViewChangeStartMessage from nodeInBox queue, should be:
- move msgs from rxMsgs queue to nodeInBox queue
- process all 3PC msgs (for Prepare msg it should be moved to inBox queue of master_replica)
- add ViewChangeContinue msg into master_replica's inBox queue
- all not 3PC msgs will be stashed in strategy queue"""
looper.run(node.process_one_node_message(m))
m = node.master_replica.inBox.popleft()
assert isinstance(m[0], Prepare)
m = node.master_replica.inBox.popleft()
assert isinstance(m, ViewChangeContinueMessage)
m = node.view_changer.pre_vc_strategy.stashedNodeInBox.popleft()
assert isinstance(m[0], InstanceChange)
def test_accept_all_3PC_msgs(create_node_and_not_start, looper):
node = create_node_and_not_start
preprepare = PrePrepare(
0, 0, 1, get_utc_epoch(),
['f99937241d4c891c08e92a3cc25966607315ca66b51827b170d492962d58a9be'],
'[]',
'f99937241d4c891c08e92a3cc25966607315ca66b51827b170d492962d58a9be',
DOMAIN_LEDGER_ID, 'CZecK1m7VYjSNCC7pGHj938DSW2tfbqoJp1bMJEtFqvG',
'7WrAMboPTcMaQCU1raoj28vnhu2bPMMd2Lr9tEcsXeCJ', 0, True)
prepare = Prepare(
0, 0, 1, get_utc_epoch(),
'f99937241d4c891c08e92a3cc25966607315ca66b51827b170d492962d58a9be',
'CZecK1m7VYjSNCC7pGHj938DSW2tfbqoJp1bMJEtFqvG',
'7WrAMboPTcMaQCU1raoj28vnhu2bPMMd2Lr9tEcsXeCJ')
commit = Commit(0, 0, 1)
node.view_changer = node.newViewChanger()
node.view_changer.pre_vc_strategy = VCStartMsgStrategy(
node.view_changer, node)
node.view_changer.view_no = 0
node.master_replica.primaryName = 'Alpha'
"""Initiate view_change procedure"""
node.view_changer.startViewChange(1)
assert len(node.nodeInBox) == 1
m = node.nodeInBox[0]
assert isinstance(m[0], ViewChangeStartMessage)
"""
Imitate that nodestack.service was called and
those of next messages are put into nodeInBox queue
"""
node.nodeInBox.append((preprepare, 'some_node'))
node.nodeInBox.append((prepare, 'some_node'))
node.nodeInBox.append((commit, 'some_node'))
assert len(node.master_replica.inBox) == 0
"""Imitate looper's work"""
looper.run(node.serviceReplicas(None))
"""
Next looper's task must be processNodeInBox and
all of 3PC messages must be moved to replica's inBox queue
"""
looper.run(node.processNodeInBox())
"""3 3PC msgs and 1 is ViewChangeContinuedMessage"""
assert len(node.master_replica.inBox) == 4
"""Check the order of msgs"""
m = node.master_replica.inBox.popleft()
assert isinstance(m[0], PrePrepare)
m = node.master_replica.inBox.popleft()
assert isinstance(m[0], Prepare)
m = node.master_replica.inBox.popleft()
assert isinstance(m[0], Commit)
m = node.master_replica.inBox.popleft()
assert isinstance(m, ViewChangeContinueMessage)
def pre_vc_strategy(view_changer, fake_node):
strategy = VCStartMsgStrategy(view_changer, fake_node)
strategy.view_changer.pre_vc_strategy = strategy
return strategy
def pre_vc_strategy(view_changer):
strategy = VCStartMsgStrategy(view_changer)
strategy.view_changer.pre_vc_strategy = strategy
return strategy