Esempio n. 1
0
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
		}
	}
}
Esempio n. 2
0
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
}