Ejemplo n.º 1
0
func (fo *frameOpen) createRollClientTxn() (*msgs.ClientTxn, map[common.VarUUId]*common.Positions) {
	var origWrite *msgs.Action
	vUUIdBytes := fo.v.UUId[:]
	for idx, l := 0, fo.frameTxnActions.Len(); idx < l; idx++ {
		action := fo.frameTxnActions.At(idx)
		if bytes.Equal(action.VarId(), vUUIdBytes) {
			origWrite = &action
			break
		}
	}
	seg := capn.NewBuffer(nil)
	ctxn := msgs.NewClientTxn(seg)
	ctxn.SetRetry(false)
	actions := msgs.NewClientActionList(seg, 1)
	ctxn.SetActions(actions)
	action := actions.At(0)
	action.SetVarId(fo.v.UUId[:])
	action.SetRoll()
	roll := action.Roll()
	roll.SetVersion(fo.frameTxnId[:])
	var refs msgs.VarIdPos_List
	switch origWrite.Which() {
	case msgs.ACTION_WRITE:
		ow := origWrite.Write()
		roll.SetValue(ow.Value())
		refs = ow.References()
	case msgs.ACTION_READWRITE:
		owr := origWrite.Readwrite()
		roll.SetValue(owr.Value())
		refs = owr.References()
	case msgs.ACTION_CREATE:
		oc := origWrite.Create()
		roll.SetValue(oc.Value())
		refs = oc.References()
	case msgs.ACTION_ROLL:
		owr := origWrite.Roll()
		roll.SetValue(owr.Value())
		refs = owr.References()
	default:
		panic(fmt.Sprintf("%v unexpected action type when building roll: %v", fo.frame, origWrite.Which()))
	}
	posMap := make(map[common.VarUUId]*common.Positions)
	posMap[*fo.v.UUId] = fo.v.positions
	refVarList := seg.NewDataList(refs.Len())
	roll.SetReferences(refVarList)
	for idx, l := 0, refs.Len(); idx < l; idx++ {
		ref := refs.At(idx)
		vUUId := common.MakeVarUUId(ref.Id())
		pos := common.Positions(ref.Positions())
		posMap[*vUUId] = &pos
		refVarList.Set(idx, vUUId[:])
	}
	return &ctxn, posMap
}
Ejemplo n.º 2
0
func (sts *SimpleTxnSubmitter) translateCreate(outgoingSeg *capn.Segment, referencesInNeedOfPositions *[]*msgs.VarIdPos, action *msgs.Action, clientAction *msgs.ClientAction) (*common.Positions, []common.RMId, error) {
	action.SetCreate()
	clientCreate := clientAction.Create()
	create := action.Create()
	create.SetValue(clientCreate.Value())
	vUUId := common.MakeVarUUId(clientAction.VarId())
	positions, hashCodes, err := sts.hashCache.CreatePositions(vUUId, int(sts.topology.MaxRMCount))
	if err != nil {
		return nil, nil, err
	}
	create.SetPositions((capn.UInt8List)(*positions))
	clientReferences := clientCreate.References()
	references := msgs.NewVarIdPosList(outgoingSeg, clientReferences.Len())
	create.SetReferences(references)
	copyReferences(&clientReferences, &references, referencesInNeedOfPositions)
	return positions, hashCodes, nil
}