// dbheight is the height of the process list, and vmIndex is the vm
// that is missing the DBSig. If the DBSig isn't our responsiblity, then
// this call will do nothing. Assumes the state for the leader is set properly
func (s *State) SendDBSig(dbheight uint32, vmIndex int) {
ht := s.GetHighestCompletedBlock()
if dbheight <= ht || s.EOM {
return
}
pl := s.ProcessLists.Get(dbheight)
vm := pl.VMs[vmIndex]
if vm.Height > 0 {
return
}
leader, lvm := pl.GetVirtualServers(vm.LeaderMinute, s.IdentityChainID)
if !leader || lvm != vmIndex {
return
}
if !vm.Signed {
dbstate := s.DBStates.Get(int(dbheight - 1))
if dbstate == nil && dbheight > 0 {
s.SendDBSig(dbheight-1, vmIndex)
return
}
if lvm == vmIndex {
if !pl.DBSigAlreadySent {
dbs := new(messages.DirectoryBlockSignature)
dbs.DirectoryBlockHeader = dbstate.DirectoryBlock.GetHeader()
//dbs.DirectoryBlockKeyMR = dbstate.DirectoryBlock.GetKeyMR()
dbs.ServerIdentityChainID = s.GetIdentityChainID()
dbs.DBHeight = dbheight
dbs.Timestamp = s.GetTimestamp()
dbs.SetVMHash(nil)
dbs.SetVMIndex(vmIndex)
dbs.SetLocal(true)
dbs.Sign(s)
err := dbs.Sign(s)
if err != nil {
panic(err)
}
dbs.LeaderExecute(s)
vm.Signed = true
pl.DBSigAlreadySent = true
} else {
pl.Ask(vmIndex, 0, 0, 5)
}
}
}
}
// TODO: Should fault the server if we don't have the proper sequence of EOM messages.
func (s *State) ProcessEOM(dbheight uint32, msg interfaces.IMsg) bool {
e := msg.(*messages.EOM)
if s.Syncing && !s.EOM {
return false
}
if s.EOM && int(e.Minute) > s.EOMMinute {
return false
}
pl := s.ProcessLists.Get(dbheight)
vm := s.ProcessLists.Get(dbheight).VMs[msg.GetVMIndex()]
if uint32(pl.System.Height) >= e.SysHeight {
s.EOMSys = true
}
// If I have done everything for all EOMs for all VMs, then and only then do I
// let processing continue.
if s.EOMDone && s.EOMSys {
s.EOMProcessed--
if s.EOMProcessed <= 0 {
s.EOM = false
s.EOMDone = false
s.ReviewHolding()
s.Syncing = false
}
s.SendHeartBeat()
return true
}
// What I do once for all VMs at the beginning of processing a particular EOM
if !s.EOM {
s.EOMSys = false
s.Syncing = true
s.EOM = true
s.EOMLimit = len(s.LeaderPL.FedServers)
s.EOMMinute = int(e.Minute)
s.EOMsyncing = true
s.EOMProcessed = 0
s.Newblk = false
for _, vm := range pl.VMs {
vm.Synced = false
}
s.AddStatus("EOM Syncing")
return false
}
// What I do for each EOM
if !e.Processed {
vm.LeaderMinute++
s.EOMProcessed++
e.Processed = true
vm.Synced = true
if s.LeaderPL.SysHighest < int(e.SysHeight) {
s.LeaderPL.SysHighest = int(e.SysHeight)
}
s.AddStatus("EOM Processed")
return false
}
allfaults := s.LeaderPL.System.Height >= s.LeaderPL.SysHighest
// After all EOM markers are processed, Claim we are done. Now we can unwind
if allfaults && s.EOMProcessed == s.EOMLimit && !s.EOMDone {
s.AddStatus("EOM All Done")
s.EOMDone = true
for _, eb := range pl.NewEBlocks {
eb.AddEndOfMinuteMarker(byte(e.Minute + 1))
}
s.FactoidState.EndOfPeriod(int(e.Minute))
ecblk := pl.EntryCreditBlock
ecbody := ecblk.GetBody()
mn := entryCreditBlock.NewMinuteNumber(e.Minute + 1)
ecbody.AddEntry(mn)
if !s.Leader {
s.CurrentMinute = int(e.Minute)
}
s.CurrentMinute++
switch {
case s.CurrentMinute < 10:
s.LeaderPL = s.ProcessLists.Get(s.LLeaderHeight)
s.Leader, s.LeaderVMIndex = s.LeaderPL.GetVirtualServers(s.CurrentMinute, s.IdentityChainID)
case s.CurrentMinute == 10:
eBlocks := []interfaces.IEntryBlock{}
entries := []interfaces.IEBEntry{}
for _, v := range pl.NewEBlocks {
eBlocks = append(eBlocks, v)
}
for _, v := range pl.NewEntries {
entries = append(entries, v)
}
dbstate := s.AddDBState(true, s.LeaderPL.DirectoryBlock, s.LeaderPL.AdminBlock, s.GetFactoidState().GetCurrentBlock(), s.LeaderPL.EntryCreditBlock, eBlocks, entries)
if dbstate == nil {
dbstate = s.DBStates.Get(int(s.LeaderPL.DirectoryBlock.GetHeader().GetDBHeight()))
}
dbht := int(dbstate.DirectoryBlock.GetHeader().GetDBHeight())
if dbht > 0 {
prev := s.DBStates.Get(dbht - 1)
s.DBStates.FixupLinks(prev, dbstate)
}
s.DBStates.ProcessBlocks(dbstate)
s.CurrentMinute = 0
s.LLeaderHeight++
s.LeaderPL = s.ProcessLists.Get(s.LLeaderHeight)
s.Leader, s.LeaderVMIndex = s.LeaderPL.GetVirtualServers(0, s.IdentityChainID)
s.DBSigProcessed = 0
// Note about dbsigs.... If we processed the previous minute, then we generate the DBSig for the next block.
// But if we didn't process the preivious block, like we start from scratch, or we had to reset the entire
// network, then no dbsig exists. This code doesn't execute, and so we have no dbsig. In that case, on
// the next EOM, we see the block hasn't been signed, and we sign the block (Thats the call to SendDBSig()
// above).
if s.Leader {
dbstate := s.DBStates.Get(int(s.LLeaderHeight - 1))
dbs := new(messages.DirectoryBlockSignature)
db := dbstate.DirectoryBlock
dbs.DirectoryBlockHeader = db.GetHeader()
//dbs.DirectoryBlockKeyMR = dbstate.DirectoryBlock.GetKeyMR()
dbs.ServerIdentityChainID = s.GetIdentityChainID()
dbs.DBHeight = s.LLeaderHeight
dbs.Timestamp = s.GetTimestamp()
dbs.SetVMHash(nil)
dbs.SetVMIndex(s.LeaderVMIndex)
dbs.SetLocal(true)
dbs.Sign(s)
err := dbs.Sign(s)
if err != nil {
panic(err)
}
dbs.LeaderExecute(s)
}
s.Saving = true
}
for k := range s.Commits {
vs := s.Commits[k]
if len(vs) == 0 {
delete(s.Commits, k)
continue
}
v, ok := vs[0].(interfaces.IMsg)
if ok {
_, ok := s.Replay.Valid(constants.TIME_TEST, v.GetRepeatHash().Fixed(), v.GetTimestamp(), s.GetTimestamp())
if !ok {
copy(vs, vs[1:])
vs[len(vs)-1] = nil
s.Commits[k] = vs[:len(vs)-1]
}
}
}
for k := range s.Acks {
v := s.Acks[k].(*messages.Ack)
if v.DBHeight < s.LLeaderHeight {
delete(s.Acks, k)
}
}
}
return false
}