func (c *CPInterface) dispatchCommands(q *btrdb.Quasar, conn net.Conn) {
//This governs the stream
rmtx := sync.Mutex{}
wmtx := sync.Mutex{}
log.Info("cpnp connection")
for !c.isShuttingDown {
rmtx.Lock()
seg, err := capn.ReadFromStream(conn, nil)
if err != nil {
log.Warning("ERR (%v) :: %v", conn.RemoteAddr(), err)
conn.Close()
break
}
rmtx.Unlock()
go func() {
seg := seg
req := ReadRootRequest(seg)
mkresp := func() (Response, *capn.Segment) {
rvseg := capn.NewBuffer(nil)
resp := NewRootResponse(rvseg)
resp.SetEchoTag(req.EchoTag())
return resp, rvseg
}
sendresp := func(seg *capn.Segment) {
wmtx.Lock()
seg.WriteTo(conn)
wmtx.Unlock()
}
switch req.Which() {
case REQUEST_QUERYSTANDARDVALUES:
//log.Info("QSV\n")
st := req.QueryStandardValues().StartTime()
et := req.QueryStandardValues().EndTime()
uuid := uuid.UUID(req.QueryStandardValues().Uuid())
ver := req.QueryStandardValues().Version()
//log.Info("[REQ=QsV] st=%v, et=%v, uuid=%v, gen=%v", st, et, uuid, ver)
if ver == 0 {
ver = btrdb.LatestGeneration
}
recordc, errorc, gen := q.QueryValuesStream(uuid, st, et, ver)
if recordc == nil {
log.Warning("RESPONDING ERR: %v", err)
resp, rvseg := mkresp()
resp.SetStatusCode(STATUSCODE_INTERNALERROR)
resp.SetFinal(true)
sendresp(rvseg)
return
} else {
bufarr := make([]qtree.Record, 0, 4096)
for {
resp, rvseg := mkresp()
fail := false
fin := false
for {
select {
case _, ok := <-errorc:
if ok {
fin = true
fail = true
goto donestandard
}
case r, ok := <-recordc:
if !ok {
fin = true
goto donestandard
}
bufarr = append(bufarr, r)
if len(bufarr) == cap(bufarr) {
goto donestandard
}
}
}
donestandard:
if fail {
resp.SetStatusCode(STATUSCODE_INTERNALERROR)
resp.SetFinal(true)
//consume channels
go func() {
for _ = range recordc {
}
}()
go func() {
for _ = range errorc {
}
}()
sendresp(rvseg)
return
}
records := NewRecords(rvseg)
rl := NewRecordList(rvseg, len(bufarr))
rla := rl.ToArray()
for i, v := range bufarr {
rla[i].SetTime(v.Time)
rla[i].SetValue(v.Val)
}
records.SetVersion(gen)
records.SetValues(rl)
resp.SetRecords(records)
resp.SetStatusCode(STATUSCODE_OK)
if fin {
resp.SetFinal(true)
}
sendresp(rvseg)
bufarr = bufarr[:0]
if fin {
return
}
}
}
case REQUEST_QUERYSTATISTICALVALUES:
st := req.QueryStatisticalValues().StartTime()
et := req.QueryStatisticalValues().EndTime()
uuid := uuid.UUID(req.QueryStatisticalValues().Uuid())
pw := req.QueryStatisticalValues().PointWidth()
ver := req.QueryStatisticalValues().Version()
if ver == 0 {
ver = btrdb.LatestGeneration
}
recordc, errorc, gen := q.QueryStatisticalValuesStream(uuid, st, et, ver, pw)
if recordc == nil {
log.Warning("RESPONDING ERR: %v", err)
resp, rvseg := mkresp()
resp.SetStatusCode(STATUSCODE_INTERNALERROR)
resp.SetFinal(true)
sendresp(rvseg)
return
} else {
bufarr := make([]qtree.StatRecord, 0, 4096)
for {
resp, rvseg := mkresp()
fail := false
fin := false
for {
select {
case _, ok := <-errorc:
if ok {
fin = true
fail = true
goto donestat
}
case r, ok := <-recordc:
if !ok {
fin = true
goto donestat
}
bufarr = append(bufarr, r)
if len(bufarr) == cap(bufarr) {
goto donestat
}
}
}
donestat:
if fail {
resp.SetStatusCode(STATUSCODE_INTERNALERROR)
resp.SetFinal(true)
//consume channels
go func() {
for _ = range recordc {
}
}()
go func() {
for _ = range errorc {
}
}()
sendresp(rvseg)
return
}
records := NewStatisticalRecords(rvseg)
rl := NewStatisticalRecordList(rvseg, len(bufarr))
rla := rl.ToArray()
for i, v := range bufarr {
rla[i].SetTime(v.Time)
rla[i].SetCount(v.Count)
rla[i].SetMin(v.Min)
rla[i].SetMean(v.Mean)
rla[i].SetMax(v.Max)
}
records.SetVersion(gen)
records.SetValues(rl)
resp.SetStatisticalRecords(records)
resp.SetStatusCode(STATUSCODE_OK)
if fin {
resp.SetFinal(true)
}
sendresp(rvseg)
bufarr = bufarr[:0]
if fin {
return
}
}
}
case REQUEST_QUERYVERSION:
//ul := req.
ul := req.QueryVersion().Uuids()
ull := ul.ToArray()
resp, rvseg := mkresp()
rvers := NewVersions(rvseg)
vlist := rvseg.NewUInt64List(len(ull))
ulist := rvseg.NewDataList(len(ull))
for i, v := range ull {
ver, err := q.QueryGeneration(uuid.UUID(v))
if err != nil {
resp.SetStatusCode(STATUSCODE_INTERNALERROR)
resp.SetFinal(true)
sendresp(rvseg)
return
}
//I'm not sure that the array that sits behind the uuid slice will stick around
//so I'm copying it.
uuid := make([]byte, 16)
copy(uuid, v)
vlist.Set(i, ver)
ulist.Set(i, uuid)
}
resp.SetStatusCode(STATUSCODE_OK)
rvers.SetUuids(ulist)
rvers.SetVersions(vlist)
resp.SetVersionList(rvers)
resp.SetFinal(true)
sendresp(rvseg)
case REQUEST_QUERYNEARESTVALUE:
resp, rvseg := mkresp()
t := req.QueryNearestValue().Time()
id := uuid.UUID(req.QueryNearestValue().Uuid())
ver := req.QueryNearestValue().Version()
if ver == 0 {
ver = btrdb.LatestGeneration
}
back := req.QueryNearestValue().Backward()
rv, gen, err := q.QueryNearestValue(id, t, back, ver)
switch err {
case nil:
resp.SetStatusCode(STATUSCODE_OK)
records := NewRecords(rvseg)
rl := NewRecordList(rvseg, 1)
rla := rl.ToArray()
rla[0].SetTime(rv.Time)
rla[0].SetValue(rv.Val)
records.SetVersion(gen)
records.SetValues(rl)
resp.SetRecords(records)
case qtree.ErrNoSuchPoint:
resp.SetStatusCode(STATUSCODE_NOSUCHPOINT)
default:
resp.SetStatusCode(STATUSCODE_INTERNALERROR)
}
resp.SetFinal(true)
sendresp(rvseg)
case REQUEST_QUERYCHANGEDRANGES:
resp, rvseg := mkresp()
id := uuid.UUID(req.QueryChangedRanges().Uuid())
sgen := req.QueryChangedRanges().FromGeneration()
egen := req.QueryChangedRanges().ToGeneration()
if egen == 0 {
egen = btrdb.LatestGeneration
}
resolution := req.QueryChangedRanges().Resolution()
rv, ver, err := q.QueryChangedRanges(id, sgen, egen, resolution)
switch err {
case nil:
resp.SetStatusCode(STATUSCODE_OK)
ranges := NewRanges(rvseg)
ranges.SetVersion(ver)
crl := NewChangedRangeList(rvseg, len(rv))
crla := crl.ToArray()
for i := 0; i < len(rv); i++ {
crla[i].SetStartTime(rv[i].Start)
crla[i].SetEndTime(rv[i].End)
}
ranges.SetValues(crl)
resp.SetChangedRngList(ranges)
default:
log.Critical("qcr error: ", err)
resp.SetStatusCode(STATUSCODE_INTERNALERROR)
}
resp.SetFinal(true)
sendresp(rvseg)
case REQUEST_INSERTVALUES:
resp, rvseg := mkresp()
uuid := uuid.UUID(req.InsertValues().Uuid())
rl := req.InsertValues().Values()
rla := rl.ToArray()
if len(rla) != 0 {
qtr := make([]qtree.Record, len(rla))
for i, v := range rla {
qtr[i] = qtree.Record{Time: v.Time(), Val: v.Value()}
}
q.InsertValues(uuid, qtr)
}
if req.InsertValues().Sync() {
q.Flush(uuid)
}
resp.SetFinal(true)
resp.SetStatusCode(STATUSCODE_OK)
sendresp(rvseg)
case REQUEST_DELETEVALUES:
resp, rvseg := mkresp()
id := uuid.UUID(req.DeleteValues().Uuid())
stime := req.DeleteValues().StartTime()
etime := req.DeleteValues().EndTime()
err := q.DeleteRange(id, stime, etime)
switch err {
case nil:
resp.SetStatusCode(STATUSCODE_OK)
default:
resp.SetStatusCode(STATUSCODE_INTERNALERROR)
}
resp.SetFinal(true)
sendresp(rvseg)
default:
log.Critical("weird segment")
}
}()
}
}
