func (c *cache) updateFromTxnCommit(txn *msgs.ClientTxn, txnId *common.TxnId) {
actions := txn.Actions()
c.Lock()
defer c.Unlock()
for idx, l := 0, actions.Len(); idx < l; idx++ {
action := actions.At(idx)
vUUId := common.MakeVarUUId(action.VarId())
switch action.Which() {
case msgs.CLIENTACTION_WRITE:
write := action.Write()
refs := write.References()
c.updateFromWrite(txnId, vUUId, write.Value(), &refs)
case msgs.CLIENTACTION_READWRITE:
rw := action.Readwrite()
refs := rw.References()
c.updateFromWrite(txnId, vUUId, rw.Value(), &refs)
case msgs.CLIENTACTION_CREATE:
create := action.Create()
refs := create.References()
c.updateFromWrite(txnId, vUUId, create.Value(), &refs)
case msgs.CLIENTACTION_READ:
// do nothing
}
}
}
func (sts *SimpleTxnSubmitter) clientToServerTxn(clientTxnCap *cmsgs.ClientTxn, topologyVersion uint32) (*msgs.Txn, []common.RMId, []common.RMId, error) {
outgoingSeg := capn.NewBuffer(nil)
txnCap := msgs.NewTxn(outgoingSeg)
txnCap.SetId(clientTxnCap.Id())
txnCap.SetRetry(clientTxnCap.Retry())
txnCap.SetSubmitter(uint32(sts.rmId))
txnCap.SetSubmitterBootCount(sts.bootCount)
txnCap.SetFInc(sts.topology.FInc)
txnCap.SetTopologyVersion(topologyVersion)
clientActions := clientTxnCap.Actions()
actions := msgs.NewActionList(outgoingSeg, clientActions.Len())
txnCap.SetActions(actions)
picker := ch.NewCombinationPicker(int(sts.topology.FInc), sts.disabledHashCodes)
rmIdToActionIndices, err := sts.translateActions(outgoingSeg, picker, &actions, &clientActions)
if err != nil {
return nil, nil, nil, err
}
// NB: we're guaranteed that activeRMs and passiveRMs are
// disjoint. Thus there is no RM that has some active and some
// passive actions.
activeRMs, passiveRMs, err := picker.Choose()
if err != nil {
return nil, nil, nil, err
}
allocations := msgs.NewAllocationList(outgoingSeg, len(activeRMs)+len(passiveRMs))
txnCap.SetAllocations(allocations)
sts.setAllocations(0, rmIdToActionIndices, &allocations, outgoingSeg, true, activeRMs)
sts.setAllocations(len(activeRMs), rmIdToActionIndices, &allocations, outgoingSeg, false, passiveRMs)
return &txnCap, activeRMs, passiveRMs, nil
}