def testPrePrepareWhenPrimaryStatusIsUnknown(tdir_for_func): nodeNames = genNodeNames(4) nodeReg = genNodeReg(names=nodeNames) with TestNodeSet(nodeReg=nodeReg, tmpdir=tdir_for_func) as nodeSet: with Looper(nodeSet) as looper: prepareNodeSet(looper, nodeSet) nodeA, nodeB, nodeC, nodeD = tuple( addNodeBack(nodeSet, looper, nodeNames[i]) for i in range(0, 4)) # Nodes C and D delays self nomination so A and B can become primaries nodeC.delaySelfNomination(30) nodeD.delaySelfNomination(30) # Node D delays receiving PRIMARY messages from all nodes so it will not know # whether it is primary or not # nodeD.nodestack.delay(delayer(20, PRIMARY)) nodeD.nodeIbStasher.delay(delayerMsgTuple(20, Primary)) checkPoolReady(looper=looper, nodes=nodeSet) client1 = setupClient(looper, nodeSet, tmpdir=tdir_for_func) request = sendRandomRequest(client1) # TODO Rethink this instNo = 0 for i in range(3): node = nodeSet.getNode(nodeNames[i]) # Nodes A, B and C should have received PROPAGATE request from Node D looper.run( eventually(checkIfPropagateRecvdFromNode, node, nodeD, request.clientId, request.reqId, retryWait=1, timeout=10)) # Node D should have 1 pending PRE-PREPARE request def assertOnePrePrepare(): assert len(getPendingRequestsForReplica(nodeD.replicas[instNo], PrePrepare)) == 1 looper.run(eventually(assertOnePrePrepare, retryWait=1, timeout=10)) # Node D should have 2 pending PREPARE requests(from node B and C) def assertTwoPrepare(): assert len(getPendingRequestsForReplica(nodeD.replicas[instNo], Prepare)) == 2 looper.run(eventually(assertTwoPrepare, retryWait=1, timeout=10)) # Node D should have no pending PRE-PREPARE, PREPARE or COMMIT requests for reqType in [PrePrepare, Prepare, Commit]: looper.run(eventually(lambda: assertLength( getPendingRequestsForReplica(nodeD.replicas[instNo], reqType), 0), retryWait=1, timeout=20))
def assertTwoPrepare(): assert len(getPendingRequestsForReplica(nodeD.replicas[instNo], Prepare)) == 2