def test_master_primary_different_from_previous(txnPoolNodeSet, looper,
client1, wallet1,
client1Connected):
"""
After a view change, primary must be different from previous primary for
master instance, it does not matter for other instance. The primary is
benign and does not vote for itself.
"""
pr = slow_primary(txnPoolNodeSet, 0, delay=10)
old_pr_node_name = pr.node.name
# View change happens
ensure_view_change(looper, txnPoolNodeSet)
logger.debug("VIEW HAS BEEN CHANGED!")
# Elections done
ensureElectionsDone(looper=looper, nodes=txnPoolNodeSet)
# New primary is not same as old primary
assert getPrimaryReplica(txnPoolNodeSet, 0).node.name != old_pr_node_name
pr.outBoxTestStasher.resetDelays()
# The new primary can still process requests
sendReqsToNodesAndVerifySuffReplies(looper, wallet1, client1, 5)
def test_master_primary_different_from_previous_view_for_itself(
txnPoolNodeSet, looper, sdk_pool_handle, sdk_wallet_client):
"""
After a view change, primary must be different from previous primary for
master instance, it does not matter for other instance. Break it into
2 tests, one where the primary is malign and votes for itself but is still
not made primary in the next view.
"""
old_view_no = checkViewNoForNodes(txnPoolNodeSet)
pr = slow_primary(txnPoolNodeSet, 0, delay=10)
old_pr_node = pr.node
def _get_undecided_inst_id(self):
undecideds = [i for i, r in self.replicas
if r.isPrimary is None]
# Try to nominate for the master instance
return undecideds, 0
# Patching old primary's elector's method to nominate itself
# again for the the new view
old_pr_node.elector._get_undecided_inst_id = types.MethodType(
_get_undecided_inst_id, old_pr_node.elector)
# View change happens
provoke_and_wait_for_view_change(looper,
txnPoolNodeSet,
old_view_no + 1,
sdk_pool_handle,
sdk_wallet_client)
# Elections done
ensureElectionsDone(looper=looper, nodes=txnPoolNodeSet)
# New primary is not same as old primary
assert getPrimaryReplica(txnPoolNodeSet, 0).node.name != old_pr_node.name
# All other nodes discarded the nomination by the old primary
for node in txnPoolNodeSet:
if node != old_pr_node:
assert countDiscarded(node.elector,
'of master in previous view too') == 1
# The new primary can still process requests
sdk_send_random_and_check(looper, txnPoolNodeSet,
sdk_pool_handle,
sdk_wallet_client,
5)
def test_master_primary_different_from_previous_view_for_itself(
txnPoolNodeSet, looper, client1, wallet1):
"""
After a view change, primary must be different from previous primary for
master instance, it does not matter for other instance. Break it into
2 tests, one where the primary is malign and votes for itself but is still
not made primary in the next view.
"""
old_view_no = checkViewNoForNodes(txnPoolNodeSet)
pr = slow_primary(txnPoolNodeSet, 0, delay=10)
old_pr_node = pr.node
def _get_undecided_inst_id(self):
undecideds = [i for i, r in enumerate(self.replicas)
if r.isPrimary is None]
# Try to nominate for the master instance
return undecideds, 0
# Patching old primary's elector's method to nominate itself
# again for the the new view
old_pr_node.elector._get_undecided_inst_id = types.MethodType(
_get_undecided_inst_id, old_pr_node.elector)
# View change happens
provoke_and_wait_for_view_change(looper,
txnPoolNodeSet,
old_view_no + 1,
wallet1,
client1)
# Elections done
ensureElectionsDone(looper=looper, nodes=txnPoolNodeSet)
# New primary is not same as old primary
assert getPrimaryReplica(txnPoolNodeSet, 0).node.name != old_pr_node.name
# All other nodes discarded the nomination by the old primary
for node in txnPoolNodeSet:
if node != old_pr_node:
assert countDiscarded(node.elector,
'of master in previous view too') == 1
# The new primary can still process requests
sendReqsToNodesAndVerifySuffReplies(looper, wallet1, client1, 5)
def test_master_primary_different_from_previous(txnPoolNodeSet, looper,
sdk_pool_handle, sdk_wallet_client):
"""
After a view change, primary must be different from previous primary for
master instance, it does not matter for other instance. The primary is
benign and does not vote for itself.
"""
pr = slow_primary(txnPoolNodeSet, 0, delay=10)
old_pr_node_name = pr.node.name
# View change happens
ensure_view_change(looper, txnPoolNodeSet)
logger.debug("VIEW HAS BEEN CHANGED!")
# Elections done
ensureElectionsDone(looper=looper, nodes=txnPoolNodeSet)
# New primary is not same as old primary
assert getPrimaryReplica(txnPoolNodeSet, 0).node.name != old_pr_node_name
pr.outBoxTestStasher.resetDelays()
# The new primary can still process requests
sdk_send_random_and_check(looper, txnPoolNodeSet, sdk_pool_handle, sdk_wallet_client, 5)
def step3(step2):
# make P (primary replica on master) faulty, i.e., slow to send
# PRE-PREPAREs
slow_primary(step2.nodes, 0, 5)
return step2
def step3(step2):
# make P (primary replica on master) faulty, i.e., slow to send
# PRE-PREPAREs
slow_primary(step2.nodes, 0, 5)
return step2