func (sm *StackMachine) popPrefixRange() fdb.ExactRange {
er, e := fdb.PrefixRange(sm.waitAndPop().item.([]byte))
if e != nil {
panic(e)
}
return er
}
func ExamplePrefixRange() {
_ = fdb.APIVersion(100)
db, _ := fdb.OpenDefault()
tr, _ := db.CreateTransaction()
// Clear and initialize data in this transaction. In examples we do not
// commit transactions to avoid mutating a real database.
tr.ClearRange(fdb.KeyRange{fdb.Key(""), fdb.Key{0xFF}})
tr.Set(fdb.Key("alpha"), []byte("1"))
tr.Set(fdb.Key("alphabetA"), []byte("2"))
tr.Set(fdb.Key("alphabetB"), []byte("3"))
tr.Set(fdb.Key("alphabetize"), []byte("4"))
tr.Set(fdb.Key("beta"), []byte("5"))
// Construct the range of all keys beginning with "alphabet"
pr, _ := fdb.PrefixRange([]byte("alphabet"))
// Read and process the range
kvs, _ := tr.GetRange(pr, fdb.RangeOptions{}).GetSliceWithError()
for _, kv := range kvs {
fmt.Printf("%s: %s\n", string(kv.Key), string(kv.Value))
}
// Output:
// alphabetA: 2
// alphabetB: 3
// alphabetize: 4
}
func (dl directoryLayer) isPrefixFree(rtr fdb.ReadTransaction, prefix []byte) (bool, error) {
if len(prefix) == 0 {
return false, nil
}
nck, e := dl.nodeContainingKey(rtr, prefix)
if e != nil {
return false, e
}
if nck != nil {
return false, nil
}
kr, e := fdb.PrefixRange(prefix)
if e != nil {
return false, e
}
bk, ek := kr.FDBRangeKeys()
if !isRangeEmpty(rtr, fdb.KeyRange{dl.nodeSS.Pack(tuple.Tuple{bk}), dl.nodeSS.Pack(tuple.Tuple{ek})}) {
return false, nil
}
return true, nil
}
func (dl directoryLayer) removeRecursive(tr fdb.Transaction, node subspace.Subspace) error {
nodes := dl.subdirNodes(tr, node)
for i := range nodes {
if e := dl.removeRecursive(tr, nodes[i]); e != nil {
return e
}
}
p, e := dl.nodeSS.Unpack(node)
if e != nil {
return e
}
kr, e := fdb.PrefixRange(p[0].([]byte))
if e != nil {
return e
}
tr.ClearRange(kr)
tr.ClearRange(node)
return nil
}
func ExamplePrefixRange() {
fdb.MustAPIVersion(200)
db := fdb.MustOpenDefault()
tr, e := db.CreateTransaction()
if e != nil {
fmt.Printf("Unable to create transaction: %v\n", e)
return
}
// Clear and initialize data in this transaction. In examples we do not
// commit transactions to avoid mutating a real database.
tr.ClearRange(fdb.KeyRange{fdb.Key(""), fdb.Key{0xFF}})
tr.Set(fdb.Key("alpha"), []byte("1"))
tr.Set(fdb.Key("alphabetA"), []byte("2"))
tr.Set(fdb.Key("alphabetB"), []byte("3"))
tr.Set(fdb.Key("alphabetize"), []byte("4"))
tr.Set(fdb.Key("beta"), []byte("5"))
// Construct the range of all keys beginning with "alphabet". It is safe to
// ignore the error return from PrefixRange unless the provided prefix might
// consist entirely of zero or more 0xFF bytes.
pr, _ := fdb.PrefixRange([]byte("alphabet"))
// Read and process the range
kvs, e := tr.GetRange(pr, fdb.RangeOptions{}).GetSliceWithError()
if e != nil {
fmt.Printf("Unable to read range: %v\n", e)
}
for _, kv := range kvs {
fmt.Printf("%s: %s\n", string(kv.Key), string(kv.Value))
}
// Output:
// alphabetA: 2
// alphabetB: 3
// alphabetize: 4
}
func (sm *StackMachine) processInst(idx int, inst tuple.Tuple) {
defer func() {
if r := recover(); r != nil {
switch r := r.(type) {
case fdb.Error:
sm.store(idx, []byte(tuple.Tuple{[]byte("ERROR"), []byte(fmt.Sprintf("%d", r.Code))}.Pack()))
default:
panic(r)
}
}
}()
var e error
op := inst[0].(string)
if sm.verbose {
fmt.Printf("%d. Instruction is %s (%v)\n", idx, op, sm.prefix)
fmt.Printf("Stack from [")
sm.dumpStack()
fmt.Printf(" ]\n")
}
var t fdb.Transactor
var rt fdb.ReadTransactor
var isDB bool
switch {
case strings.HasSuffix(op, "_SNAPSHOT"):
rt = sm.tr.Snapshot()
op = op[:len(op)-9]
case strings.HasSuffix(op, "_DATABASE"):
t = db
rt = db
op = op[:len(op)-9]
isDB = true
default:
t = sm.tr
rt = sm.tr
}
switch {
case op == "PUSH":
sm.store(idx, inst[1])
case op == "DUP":
entry := sm.stack[len(sm.stack)-1]
sm.store(entry.idx, entry.item)
case op == "EMPTY_STACK":
sm.stack = []stackEntry{}
sm.stack = make([]stackEntry, 0)
case op == "SWAP":
idx := sm.waitAndPop().item.(int64)
sm.stack[len(sm.stack)-1], sm.stack[len(sm.stack)-1-int(idx)] = sm.stack[len(sm.stack)-1-int(idx)], sm.stack[len(sm.stack)-1]
case op == "POP":
sm.stack = sm.stack[:len(sm.stack)-1]
case op == "SUB":
sm.store(idx, sm.waitAndPop().item.(int64)-sm.waitAndPop().item.(int64))
case op == "NEW_TRANSACTION":
sm.tr, e = db.CreateTransaction()
if e != nil {
panic(e)
}
case op == "ON_ERROR":
sm.store(idx, sm.tr.OnError(fdb.Error{int(sm.waitAndPop().item.(int64))}))
case op == "GET_READ_VERSION":
_, e = rt.ReadTransact(func(rtr fdb.ReadTransaction) (interface{}, error) {
sm.lastVersion = rtr.GetReadVersion().MustGet()
sm.store(idx, []byte("GOT_READ_VERSION"))
return nil, nil
})
if e != nil {
panic(e)
}
case op == "SET":
sm.executeMutation(t, func(tr fdb.Transaction) (interface{}, error) {
tr.Set(fdb.Key(sm.waitAndPop().item.([]byte)), sm.waitAndPop().item.([]byte))
return nil, nil
}, isDB, idx)
case op == "LOG_STACK":
prefix := sm.waitAndPop().item.([]byte)
for i := len(sm.stack) - 1; i >= 0; i-- {
if i%100 == 0 {
sm.tr.Commit().MustGet()
}
el := sm.waitAndPop()
var keyt tuple.Tuple
keyt = append(keyt, int64(i))
keyt = append(keyt, int64(el.idx))
pk := append(prefix, keyt.Pack()...)
var valt tuple.Tuple
valt = append(valt, el.item)
pv := valt.Pack()
vl := 40000
if len(pv) < vl {
vl = len(pv)
}
sm.tr.Set(fdb.Key(pk), pv[:vl])
}
sm.tr.Commit().MustGet()
case op == "GET":
_, e = rt.ReadTransact(func(rtr fdb.ReadTransaction) (interface{}, error) {
sm.store(idx, rtr.Get(fdb.Key(sm.waitAndPop().item.([]byte))))
return nil, nil
})
if e != nil {
panic(e)
}
case op == "COMMIT":
sm.store(idx, sm.tr.Commit())
case op == "RESET":
sm.tr.Reset()
case op == "CLEAR":
sm.executeMutation(t, func(tr fdb.Transaction) (interface{}, error) {
tr.Clear(fdb.Key(sm.waitAndPop().item.([]byte)))
return nil, nil
}, isDB, idx)
case op == "SET_READ_VERSION":
sm.tr.SetReadVersion(sm.lastVersion)
case op == "WAIT_FUTURE":
entry := sm.waitAndPop()
sm.store(entry.idx, entry.item)
case op == "GET_COMMITTED_VERSION":
sm.lastVersion, e = sm.tr.GetCommittedVersion()
if e != nil {
panic(e)
}
sm.store(idx, []byte("GOT_COMMITTED_VERSION"))
case op == "GET_KEY":
sel := sm.popSelector()
_, e = rt.ReadTransact(func(rtr fdb.ReadTransaction) (interface{}, error) {
sm.store(idx, rtr.GetKey(sel))
return nil, nil
})
if e != nil {
panic(e)
}
case strings.HasPrefix(op, "GET_RANGE"):
var r fdb.Range
switch op[9:] {
case "_STARTS_WITH":
r = sm.popPrefixRange()
case "_SELECTOR":
r = fdb.SelectorRange{sm.popSelector(), sm.popSelector()}
case "":
r = sm.popKeyRange()
}
ro := sm.popRangeOptions()
_, e = rt.ReadTransact(func(rtr fdb.ReadTransaction) (interface{}, error) {
sm.pushRange(idx, rtr.GetRange(r, ro).GetSliceOrPanic())
return nil, nil
})
if e != nil {
panic(e)
}
case strings.HasPrefix(op, "CLEAR_RANGE"):
var er fdb.ExactRange
switch op[11:] {
case "_STARTS_WITH":
er = sm.popPrefixRange()
case "":
er = sm.popKeyRange()
}
sm.executeMutation(t, func(tr fdb.Transaction) (interface{}, error) {
tr.ClearRange(er)
return nil, nil
}, isDB, idx)
case op == "TUPLE_PACK":
var t tuple.Tuple
count := sm.waitAndPop().item.(int64)
for i := 0; i < int(count); i++ {
t = append(t, sm.waitAndPop().item)
}
sm.store(idx, []byte(t.Pack()))
case op == "TUPLE_UNPACK":
t, e := tuple.Unpack(fdb.Key(sm.waitAndPop().item.([]byte)))
if e != nil {
panic(e)
}
for _, el := range t {
sm.store(idx, []byte(tuple.Tuple{el}.Pack()))
}
case op == "TUPLE_RANGE":
var t tuple.Tuple
count := sm.waitAndPop().item.(int64)
for i := 0; i < int(count); i++ {
t = append(t, sm.waitAndPop().item)
}
bk, ek := t.FDBRangeKeys()
sm.store(idx, []byte(bk.FDBKey()))
sm.store(idx, []byte(ek.FDBKey()))
case op == "START_THREAD":
newsm := newStackMachine(sm.waitAndPop().item.([]byte), verbose, sm.de)
sm.threads.Add(1)
go func() {
newsm.Run()
sm.threads.Done()
}()
case op == "WAIT_EMPTY":
prefix := sm.waitAndPop().item.([]byte)
er, e := fdb.PrefixRange(prefix)
if e != nil {
panic(e)
}
db.Transact(func(tr fdb.Transaction) (interface{}, error) {
v := tr.GetRange(er, fdb.RangeOptions{}).GetSliceOrPanic()
if len(v) != 0 {
panic(fdb.Error{1020})
}
return nil, nil
})
sm.store(idx, []byte("WAITED_FOR_EMPTY"))
case op == "READ_CONFLICT_RANGE":
e = sm.tr.AddReadConflictRange(fdb.KeyRange{fdb.Key(sm.waitAndPop().item.([]byte)), fdb.Key(sm.waitAndPop().item.([]byte))})
if e != nil {
panic(e)
}
sm.store(idx, []byte("SET_CONFLICT_RANGE"))
case op == "WRITE_CONFLICT_RANGE":
e = sm.tr.AddWriteConflictRange(fdb.KeyRange{fdb.Key(sm.waitAndPop().item.([]byte)), fdb.Key(sm.waitAndPop().item.([]byte))})
if e != nil {
panic(e)
}
sm.store(idx, []byte("SET_CONFLICT_RANGE"))
case op == "READ_CONFLICT_KEY":
e = sm.tr.AddReadConflictKey(fdb.Key(sm.waitAndPop().item.([]byte)))
if e != nil {
panic(e)
}
sm.store(idx, []byte("SET_CONFLICT_KEY"))
case op == "WRITE_CONFLICT_KEY":
e = sm.tr.AddWriteConflictKey(fdb.Key(sm.waitAndPop().item.([]byte)))
if e != nil {
panic(e)
}
sm.store(idx, []byte("SET_CONFLICT_KEY"))
case op == "ATOMIC_OP":
opname := strings.Replace(strings.Title(strings.Replace(strings.ToLower(sm.waitAndPop().item.(string)), "_", " ", -1)), " ", "", -1)
key := fdb.Key(sm.waitAndPop().item.([]byte))
value := sm.waitAndPop().item.([]byte)
sm.executeMutation(t, func(tr fdb.Transaction) (interface{}, error) {
reflect.ValueOf(tr).MethodByName(opname).Call([]reflect.Value{reflect.ValueOf(key), reflect.ValueOf(value)})
return nil, nil
}, isDB, idx)
case op == "DISABLE_WRITE_CONFLICT":
sm.tr.Options().SetNextWriteNoWriteConflictRange()
case op == "CANCEL":
sm.tr.Cancel()
case op == "UNIT_TESTS":
db.Options().SetLocationCacheSize(100001)
db.Options().SetMaxWatches(10001)
tr, e := db.CreateTransaction()
if e != nil {
panic(e)
}
tr.Options().SetPrioritySystemImmediate()
tr.Options().SetPriorityBatch()
tr.Options().SetCausalReadRisky()
tr.Options().SetCausalWriteRisky()
tr.Options().SetReadYourWritesDisable()
tr.Options().SetReadAheadDisable()
tr.Options().SetReadSystemKeys()
tr.Options().SetAccessSystemKeys()
tr.Options().SetDurabilityDevNullIsWebScale()
tr.Options().SetTimeout(1000)
tr.Options().SetRetryLimit(5)
tr.Options().SetMaxRetryDelay(100)
tr.Get(fdb.Key("\xff")).MustGet()
tr.Commit().MustGet()
sm.testWatches()
sm.testLocality()
case strings.HasPrefix(op, "DIRECTORY_"):
sm.de.processOp(sm, op[10:], isDB, idx, t, rt)
default:
log.Fatalf("Unhandled operation %s\n", string(inst[0].([]byte)))
}
if sm.verbose {
fmt.Printf(" to [")
sm.dumpStack()
fmt.Printf(" ]\n\n")
}
runtime.Gosched()
}
func (sm *StackMachine) processInst(idx int, inst tuple.Tuple) {
defer func() {
if r := recover(); r != nil {
switch r := r.(type) {
case fdb.Error:
sm.store(idx, tuple.Tuple{[]byte("ERROR"), []byte(fmt.Sprintf("%d", int(r)))}.Pack())
default:
panic(r)
}
}
}()
var e error
op := string(inst[0].([]byte))
if sm.verbose {
fmt.Printf("Instruction is %s (%v)\n", op, sm.prefix)
fmt.Printf("Stack from [")
sm.dumpStack()
fmt.Printf(" ]\n")
}
var obj interface{}
switch {
case strings.HasSuffix(op, "_SNAPSHOT"):
obj = sm.tr.Snapshot()
op = op[:len(op)-9]
case strings.HasSuffix(op, "_DATABASE"):
obj = db
op = op[:len(op)-9]
default:
obj = sm.tr
}
switch string(op) {
case "PUSH":
sm.store(idx, inst[1])
case "DUP":
entry := sm.stack[len(sm.stack)-1]
sm.store(entry.idx, entry.item)
case "EMPTY_STACK":
sm.stack = []stackEntry{}
sm.stack = make([]stackEntry, 0)
case "SWAP":
idx := sm.waitAndPop().item.(int64)
sm.stack[len(sm.stack)-1], sm.stack[len(sm.stack)-1-int(idx)] = sm.stack[len(sm.stack)-1-int(idx)], sm.stack[len(sm.stack)-1]
case "POP":
sm.stack = sm.stack[:len(sm.stack)-1]
case "SUB":
sm.store(idx, sm.waitAndPop().item.(int64)-sm.waitAndPop().item.(int64))
case "NEW_TRANSACTION":
sm.tr, e = db.CreateTransaction()
if e != nil {
panic(e)
}
case "ON_ERROR":
sm.store(idx, sm.tr.OnError(fdb.Error(int(sm.waitAndPop().item.(int64)))))
case "GET_READ_VERSION":
sm.lastVersion = obj.(fdb.ReadTransaction).GetReadVersion().GetOrPanic()
sm.store(idx, []byte("GOT_READ_VERSION"))
case "SET":
switch o := obj.(type) {
case fdb.Database:
e = o.Set(fdb.Key(sm.waitAndPop().item.([]byte)), sm.waitAndPop().item.([]byte))
if e != nil {
panic(e)
}
sm.store(idx, []byte("RESULT_NOT_PRESENT"))
case fdb.Transaction:
o.Set(fdb.Key(sm.waitAndPop().item.([]byte)), sm.waitAndPop().item.([]byte))
}
case "LOG_STACK":
prefix := sm.waitAndPop().item.([]byte)
for i := len(sm.stack) - 1; i >= 0; i-- {
if i%100 == 0 {
sm.tr.Commit().GetOrPanic()
}
el := sm.waitAndPop()
var keyt tuple.Tuple
keyt = append(keyt, int64(i))
keyt = append(keyt, int64(el.idx))
pk := append(prefix, keyt.Pack()...)
var valt tuple.Tuple
valt = append(valt, el.item)
pv := valt.Pack()
vl := 40000
if len(pv) < vl {
vl = len(pv)
}
sm.tr.Set(fdb.Key(pk), pv[:vl])
}
sm.tr.Commit().GetOrPanic()
case "GET":
switch o := obj.(type) {
case fdb.Database:
v, e := db.Get(fdb.Key(sm.waitAndPop().item.([]byte)))
if e != nil {
panic(e)
}
if v != nil {
sm.store(idx, v)
} else {
sm.store(idx, []byte("RESULT_NOT_PRESENT"))
}
case fdb.ReadTransaction:
sm.store(idx, o.Get(fdb.Key(sm.waitAndPop().item.([]byte))))
}
case "COMMIT":
sm.store(idx, sm.tr.Commit())
case "RESET":
sm.tr.Reset()
case "CLEAR":
switch o := obj.(type) {
case fdb.Database:
e := db.Clear(fdb.Key(sm.waitAndPop().item.([]byte)))
if e != nil {
panic(e)
}
sm.store(idx, []byte("RESULT_NOT_PRESENT"))
case fdb.Transaction:
o.Clear(fdb.Key(sm.waitAndPop().item.([]byte)))
}
case "SET_READ_VERSION":
sm.tr.SetReadVersion(sm.lastVersion)
case "WAIT_FUTURE":
entry := sm.waitAndPop()
sm.store(entry.idx, entry.item)
case "GET_COMMITTED_VERSION":
sm.lastVersion, e = sm.tr.GetCommittedVersion()
if e != nil {
panic(e)
}
sm.store(idx, []byte("GOT_COMMITTED_VERSION"))
case "GET_KEY":
sel := fdb.KeySelector{fdb.Key(sm.waitAndPop().item.([]byte)), int64ToBool(sm.waitAndPop().item.(int64)), int(sm.waitAndPop().item.(int64))}
switch o := obj.(type) {
case fdb.Database:
v, e := o.GetKey(sel)
if e != nil {
panic(e)
}
sm.store(idx, []byte(v))
case fdb.ReadTransaction:
sm.store(idx, o.GetKey(sel))
}
case "GET_RANGE":
begin := fdb.Key(sm.waitAndPop().item.([]byte))
end := fdb.Key(sm.waitAndPop().item.([]byte))
var limit int
switch l := sm.waitAndPop().item.(type) {
case int64:
limit = int(l)
}
reverse := int64ToBool(sm.waitAndPop().item.(int64))
mode := sm.waitAndPop().item.(int64)
switch o := obj.(type) {
case fdb.Database:
v, e := db.GetRange(fdb.KeyRange{begin, end}, fdb.RangeOptions{Limit: int(limit), Reverse: reverse, Mode: fdb.StreamingMode(mode + 1)})
if e != nil {
panic(e)
}
sm.pushRange(idx, v)
case fdb.ReadTransaction:
sm.pushRange(idx, o.GetRange(fdb.KeyRange{begin, end}, fdb.RangeOptions{Limit: int(limit), Reverse: reverse, Mode: fdb.StreamingMode(mode + 1)}).GetSliceOrPanic())
}
case "CLEAR_RANGE":
switch o := obj.(type) {
case fdb.Database:
e := o.ClearRange(fdb.KeyRange{fdb.Key(sm.waitAndPop().item.([]byte)), fdb.Key(sm.waitAndPop().item.([]byte))})
if e != nil {
panic(e)
}
sm.store(idx, []byte("RESULT_NOT_PRESENT"))
case fdb.Transaction:
o.ClearRange(fdb.KeyRange{fdb.Key(sm.waitAndPop().item.([]byte)), fdb.Key(sm.waitAndPop().item.([]byte))})
}
case "GET_RANGE_STARTS_WITH":
prefix := sm.waitAndPop().item.([]byte)
var limit int
switch l := sm.waitAndPop().item.(type) {
case int64:
limit = int(l)
}
reverse := int64ToBool(sm.waitAndPop().item.(int64))
mode := sm.waitAndPop().item.(int64)
er, e := fdb.PrefixRange(prefix)
if e != nil {
panic(e)
}
switch o := obj.(type) {
case fdb.Database:
v, e := db.GetRange(er, fdb.RangeOptions{Limit: int(limit), Reverse: reverse, Mode: fdb.StreamingMode(mode + 1)})
if e != nil {
panic(e)
}
sm.pushRange(idx, v)
case fdb.ReadTransaction:
sm.pushRange(idx, o.GetRange(er, fdb.RangeOptions{Limit: int(limit), Reverse: reverse, Mode: fdb.StreamingMode(mode + 1)}).GetSliceOrPanic())
}
case "GET_RANGE_SELECTOR":
begin := fdb.KeySelector{Key: fdb.Key(sm.waitAndPop().item.([]byte)), OrEqual: int64ToBool(sm.waitAndPop().item.(int64)), Offset: int(sm.waitAndPop().item.(int64))}
end := fdb.KeySelector{Key: fdb.Key(sm.waitAndPop().item.([]byte)), OrEqual: int64ToBool(sm.waitAndPop().item.(int64)), Offset: int(sm.waitAndPop().item.(int64))}
var limit int
switch l := sm.waitAndPop().item.(type) {
case int64:
limit = int(l)
}
reverse := int64ToBool(sm.waitAndPop().item.(int64))
mode := sm.waitAndPop().item.(int64)
switch o := obj.(type) {
case fdb.Database:
v, e := db.GetRange(fdb.SelectorRange{begin, end}, fdb.RangeOptions{Limit: int(limit), Reverse: reverse, Mode: fdb.StreamingMode(mode + 1)})
if e != nil {
panic(e)
}
sm.pushRange(idx, v)
case fdb.ReadTransaction:
sm.pushRange(idx, o.GetRange(fdb.SelectorRange{begin, end}, fdb.RangeOptions{Limit: int(limit), Reverse: reverse, Mode: fdb.StreamingMode(mode + 1)}).GetSliceOrPanic())
}
case "CLEAR_RANGE_STARTS_WITH":
prefix := sm.waitAndPop().item.([]byte)
er, e := fdb.PrefixRange(prefix)
if e != nil {
panic(e)
}
switch o := obj.(type) {
case fdb.Database:
e := o.ClearRange(er)
if e != nil {
panic(e)
}
sm.store(idx, []byte("RESULT_NOT_PRESENT"))
case fdb.Transaction:
o.ClearRange(er)
}
case "TUPLE_PACK":
var t tuple.Tuple
count := sm.waitAndPop().item.(int64)
for i := 0; i < int(count); i++ {
t = append(t, sm.waitAndPop().item)
}
sm.store(idx, t.Pack())
case "TUPLE_UNPACK":
t, e := tuple.Unpack(sm.waitAndPop().item.([]byte))
if e != nil {
panic(e)
}
for _, el := range t {
sm.store(idx, tuple.Tuple{el}.Pack())
}
case "TUPLE_RANGE":
var t tuple.Tuple
count := sm.waitAndPop().item.(int64)
for i := 0; i < int(count); i++ {
t = append(t, sm.waitAndPop().item)
}
kr := t.Range()
sm.store(idx, kr.Begin)
sm.store(idx, kr.End)
case "START_THREAD":
newsm := newStackMachine(sm.waitAndPop().item.([]byte), verbose)
sm.threads.Add(1)
go func() {
newsm.Run()
sm.threads.Done()
}()
case "WAIT_EMPTY":
prefix := sm.waitAndPop().item.([]byte)
er, e := fdb.PrefixRange(prefix)
if e != nil {
panic(e)
}
db.Transact(func(tr fdb.Transaction) (interface{}, error) {
v := tr.GetRange(er, fdb.RangeOptions{}).GetSliceOrPanic()
if len(v) != 0 {
panic(fdb.Error(1020))
}
return nil, nil
})
sm.store(idx, []byte("WAITED_FOR_EMPTY"))
case "READ_CONFLICT_RANGE":
e = sm.tr.AddReadConflictRange(fdb.KeyRange{fdb.Key(sm.waitAndPop().item.([]byte)), fdb.Key(sm.waitAndPop().item.([]byte))})
if e != nil {
panic(e)
}
sm.store(idx, []byte("SET_CONFLICT_RANGE"))
case "WRITE_CONFLICT_RANGE":
e = sm.tr.AddWriteConflictRange(fdb.KeyRange{fdb.Key(sm.waitAndPop().item.([]byte)), fdb.Key(sm.waitAndPop().item.([]byte))})
if e != nil {
panic(e)
}
sm.store(idx, []byte("SET_CONFLICT_RANGE"))
case "READ_CONFLICT_KEY":
e = sm.tr.AddReadConflictKey(fdb.Key(sm.waitAndPop().item.([]byte)))
if e != nil {
panic(e)
}
sm.store(idx, []byte("SET_CONFLICT_KEY"))
case "WRITE_CONFLICT_KEY":
e = sm.tr.AddWriteConflictKey(fdb.Key(sm.waitAndPop().item.([]byte)))
if e != nil {
panic(e)
}
sm.store(idx, []byte("SET_CONFLICT_KEY"))
case "ATOMIC_OP":
opname := strings.Title(strings.ToLower(string(sm.waitAndPop().item.([]byte))))
key := fdb.Key(sm.waitAndPop().item.([]byte))
value := sm.waitAndPop().item.([]byte)
reflect.ValueOf(obj).MethodByName(opname).Call([]reflect.Value{reflect.ValueOf(key), reflect.ValueOf(value)})
switch obj.(type) {
case fdb.Database:
sm.store(idx, []byte("RESULT_NOT_PRESENT"))
}
case "DISABLE_WRITE_CONFLICT":
sm.tr.Options().SetNextWriteNoWriteConflictRange()
case "CANCEL":
sm.tr.Cancel()
case "UNIT_TESTS":
default:
log.Fatalf("Unhandled operation %s\n", string(inst[0].([]byte)))
}
if sm.verbose {
fmt.Printf(" to [")
sm.dumpStack()
fmt.Printf(" ]\n\n")
}
runtime.Gosched()
}