func NewSimpleTxnSubmitter(rmId common.RMId, bootCount uint32, topology *server.Topology, cm paxos.ConnectionManager) *SimpleTxnSubmitter {
rng := rand.New(rand.NewSource(time.Now().UnixNano()))
resolver := ch.NewResolver(rng, topology.AllRMs)
disabled := make(map[common.RMId]server.EmptyStruct, len(topology.AllRMs))
for _, rmId := range topology.AllRMs {
disabled[rmId] = server.EmptyStructVal
}
cache := ch.NewCache(resolver, topology.AllRMs.NonEmptyLen(), rng)
if topology.RootVarUUId != nil {
cache.AddPosition(topology.RootVarUUId, topology.RootPositions)
}
sts := &SimpleTxnSubmitter{
rmId: rmId,
bootCount: bootCount,
disabledHashCodes: disabled,
connections: nil,
connectionManager: cm,
outcomeConsumers: make(map[common.TxnId]txnOutcomeConsumer),
onShutdown: make(map[*func(bool)]server.EmptyStruct),
resolver: resolver,
hashCache: cache,
topology: topology,
rng: rng,
}
return sts
}
func (sts *SimpleTxnSubmitter) TopologyChange(topology *server.Topology, servers map[common.RMId]paxos.Connection) {
if topology != nil {
server.Log("TM setting topology to", topology)
sts.topology = topology
sts.resolver = ch.NewResolver(sts.rng, topology.AllRMs)
sts.hashCache.SetResolverDesiredLen(sts.resolver, topology.AllRMs.NonEmptyLen())
if topology.RootVarUUId != nil {
sts.hashCache.AddPosition(topology.RootVarUUId, topology.RootPositions)
}
if !topology.Equal(server.BlankTopology) && sts.bufferedSubmissions != nil {
funcs := sts.bufferedSubmissions
sts.bufferedSubmissions = nil
for _, fun := range funcs {
fun()
}
}
}
if servers != nil {
sts.disabledHashCodes = make(map[common.RMId]server.EmptyStruct, len(sts.topology.AllRMs))
for _, rmId := range sts.topology.AllRMs {
if _, found := servers[rmId]; !found {
sts.disabledHashCodes[rmId] = server.EmptyStructVal
}
}
sts.connections = servers
server.Log("TM disabled hash codes", sts.disabledHashCodes)
}
}
func newLocationChecker(stores stores) *locationChecker {
resolver := ch.NewResolver(stores[0].topology.RMs(), stores[0].topology.TwoFInc)
m := make(map[common.RMId]*store, len(stores))
for _, s := range stores {
m[s.rmId] = s
}
return &locationChecker{
resolver: resolver,
stores: m,
}
}
func (sts *SimpleTxnSubmitter) TopologyChanged(topology *configuration.Topology) {
if topology == nil || topology.RMs().NonEmptyLen() < int(topology.TwoFInc) {
// topology is needed for client txns. As we're booting up, we
// just don't care.
return
}
sts.topology = topology
sts.resolver = ch.NewResolver(topology.RMs(), topology.TwoFInc)
sts.hashCache.SetResolver(sts.resolver)
if topology.Root.VarUUId != nil {
sts.hashCache.AddPosition(topology.Root.VarUUId, topology.Root.Positions)
}
sts.calculateDisabledHashcodes()
}
func (g *Generator) SatisfiedBy(topology *Topology, positions *common.Positions) (bool, error) {
rms := topology.RMs()
twoFInc := topology.TwoFInc
if g.UseNext {
next := topology.Next()
rms = next.RMs()
twoFInc = (uint16(next.F) * 2) + 1
}
server.Log("Generator:SatisfiedBy:NewResolver:", rms, twoFInc)
resolver := ch.NewResolver(rms, twoFInc)
perm, err := resolver.ResolveHashCodes((*capn.UInt8List)(positions).ToArray())
if err != nil {
return false, err
}
for _, rmId := range perm {
if rmId == g.RMId {
return g.Includes, nil
}
}
return !g.Includes, nil
}
