本文整理汇总了Golang中github.com/cockroachdb/cockroach/util/encoding.EncodeVarintDescending函数的典型用法代码示例。如果您正苦于以下问题：Golang EncodeVarintDescending函数的具体用法？Golang EncodeVarintDescending怎么用？Golang EncodeVarintDescending使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。
在下文中一共展示了EncodeVarintDescending函数的5个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Golang代码示例。
示例1: TestPrettyPrint
func TestPrettyPrint(t *testing.T) {
tm, _ := time.Parse(time.UnixDate, "Sat Mar 7 11:06:39 UTC 2015")
txnID := uuid.NewV4()
testCases := []struct {
key roachpb.Key
exp string
}{
// local
{StoreIdentKey(), "/Local/Store/storeIdent"},
{StoreGossipKey(), "/Local/Store/gossipBootstrap"},
{SequenceCacheKeyPrefix(roachpb.RangeID(1000001), txnID), fmt.Sprintf(`/Local/RangeID/1000001/r/SequenceCache/%q`, txnID)},
{SequenceCacheKey(roachpb.RangeID(1000001), txnID, uint32(111), uint32(222)), fmt.Sprintf(`/Local/RangeID/1000001/r/SequenceCache/%q/epoch:111/seq:222`, txnID)},
{RaftTombstoneKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/r/RaftTombstone"},
{RaftAppliedIndexKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/r/RaftAppliedIndex"},
{RaftTruncatedStateKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/r/RaftTruncatedState"},
{RangeLeaderLeaseKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/r/RangeLeaderLease"},
{RangeStatsKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/r/RangeStats"},
{RaftHardStateKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/u/RaftHardState"},
{RaftLastIndexKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/u/RaftLastIndex"},
{RaftLogKey(roachpb.RangeID(1000001), uint64(200001)), "/Local/RangeID/1000001/u/RaftLog/logIndex:200001"},
{RangeLastVerificationTimestampKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/u/RangeLastVerificationTimestamp"},
{MakeRangeKeyPrefix(roachpb.RKey("ok")), `/Local/Range/"ok"`},
{RangeDescriptorKey(roachpb.RKey("111")), `/Local/Range/"111"/RangeDescriptor`},
{RangeTreeNodeKey(roachpb.RKey("111")), `/Local/Range/"111"/RangeTreeNode`},
{TransactionKey(roachpb.Key("111"), txnID), fmt.Sprintf(`/Local/Range/"111"/Transaction/addrKey:/id:%q`, txnID)},
{LocalMax, `/Meta1/""`}, // LocalMax == Meta1Prefix
// system
{makeKey(Meta2Prefix, roachpb.Key("foo")), `/Meta2/"foo"`},
{makeKey(Meta1Prefix, roachpb.Key("foo")), `/Meta1/"foo"`},
{RangeMetaKey(roachpb.RKey("f")), `/Meta2/"f"`},
{StoreStatusKey(2222), "/System/StatusStore/2222"},
{NodeStatusKey(1111), "/System/StatusNode/1111"},
{SystemMax, "/System/Max"},
// key of key
{RangeMetaKey(roachpb.RKey(MakeRangeKeyPrefix(roachpb.RKey("ok")))), `/Meta2/Local/Range/"ok"`},
{RangeMetaKey(roachpb.RKey(makeKey(MakeTablePrefix(42), roachpb.RKey("foo")))), `/Meta2/Table/42/"foo"`},
{RangeMetaKey(roachpb.RKey(makeKey(Meta2Prefix, roachpb.Key("foo")))), `/Meta1/"foo"`},
// table
{UserTableDataMin, "/Table/50"},
{MakeTablePrefix(111), "/Table/111"},
{makeKey(MakeTablePrefix(42), roachpb.RKey("foo")), `/Table/42/"foo"`},
{makeKey(MakeTablePrefix(42),
roachpb.RKey(encoding.EncodeFloatAscending(nil, float64(233.221112)))),
"/Table/42/233.221112"},
{makeKey(MakeTablePrefix(42),
roachpb.RKey(encoding.EncodeFloatDescending(nil, float64(-233.221112)))),
"/Table/42/233.221112"},
{makeKey(MakeTablePrefix(42),
roachpb.RKey(encoding.EncodeFloatAscending(nil, math.Inf(1)))),
"/Table/42/+Inf"},
{makeKey(MakeTablePrefix(42),
roachpb.RKey(encoding.EncodeFloatAscending(nil, math.NaN()))),
"/Table/42/NaN"},
{makeKey(MakeTablePrefix(42),
roachpb.RKey(encoding.EncodeVarintAscending(nil, 1222)),
roachpb.RKey(encoding.EncodeStringAscending(nil, "handsome man"))),
`/Table/42/1222/"handsome man"`},
{makeKey(MakeTablePrefix(42),
roachpb.RKey(encoding.EncodeVarintAscending(nil, 1222))),
`/Table/42/1222`},
{makeKey(MakeTablePrefix(42),
roachpb.RKey(encoding.EncodeVarintDescending(nil, 1222))),
`/Table/42/-1223`},
{makeKey(MakeTablePrefix(42),
roachpb.RKey(encoding.EncodeBytesAscending(nil, []byte{1, 2, 8, 255}))),
`/Table/42/"\x01\x02\b\xff"`},
{makeKey(MakeTablePrefix(42),
roachpb.RKey(encoding.EncodeBytesAscending(nil, []byte{1, 2, 8, 255})),
roachpb.RKey("bar")), `/Table/42/"\x01\x02\b\xff"/"bar"`},
{makeKey(MakeTablePrefix(42),
roachpb.RKey(encoding.EncodeBytesDescending(nil, []byte{1, 2, 8, 255})),
roachpb.RKey("bar")), `/Table/42/"\x01\x02\b\xff"/"bar"`},
{makeKey(MakeTablePrefix(42),
roachpb.RKey(encoding.EncodeNullAscending(nil))), "/Table/42/NULL"},
{makeKey(MakeTablePrefix(42),
roachpb.RKey(encoding.EncodeNotNullAscending(nil))), "/Table/42/#"},
{makeKey(MakeTablePrefix(42),
roachpb.RKey(encoding.EncodeTimeAscending(nil, tm))),
"/Table/42/Sat Mar 7 11:06:39 UTC 2015"},
{makeKey(MakeTablePrefix(42),
roachpb.RKey(encoding.EncodeTimeDescending(nil, tm))),
"/Table/42/Sat Mar 7 11:06:39 UTC 2015"},
{makeKey(MakeTablePrefix(42),
roachpb.RKey(encoding.EncodeDecimalAscending(nil, inf.NewDec(1234, 2)))),
"/Table/42/12.34"},
{makeKey(MakeTablePrefix(42),
roachpb.RKey(encoding.EncodeDecimalDescending(nil, inf.NewDec(1234, 2)))),
"/Table/42/-12.34"},
//.........这里部分代码省略.........
示例2: EncodeTableKey
// EncodeTableKey encodes `val` into `b` and returns the new buffer.
func EncodeTableKey(b []byte, val parser.Datum, dir encoding.Direction) ([]byte, error) {
if (dir != encoding.Ascending) && (dir != encoding.Descending) {
return nil, util.Errorf("invalid direction: %d", dir)
}
if val == parser.DNull {
if dir == encoding.Ascending {
return encoding.EncodeNullAscending(b), nil
}
return encoding.EncodeNullDescending(b), nil
}
switch t := val.(type) {
case *parser.DBool:
var x int64
if *t {
x = 1
} else {
x = 0
}
if dir == encoding.Ascending {
return encoding.EncodeVarintAscending(b, x), nil
}
return encoding.EncodeVarintDescending(b, x), nil
case *parser.DInt:
if dir == encoding.Ascending {
return encoding.EncodeVarintAscending(b, int64(*t)), nil
}
return encoding.EncodeVarintDescending(b, int64(*t)), nil
case *parser.DFloat:
if dir == encoding.Ascending {
return encoding.EncodeFloatAscending(b, float64(*t)), nil
}
return encoding.EncodeFloatDescending(b, float64(*t)), nil
case *parser.DDecimal:
if dir == encoding.Ascending {
return encoding.EncodeDecimalAscending(b, &t.Dec), nil
}
return encoding.EncodeDecimalDescending(b, &t.Dec), nil
case *parser.DString:
if dir == encoding.Ascending {
return encoding.EncodeStringAscending(b, string(*t)), nil
}
return encoding.EncodeStringDescending(b, string(*t)), nil
case *parser.DBytes:
if dir == encoding.Ascending {
return encoding.EncodeStringAscending(b, string(*t)), nil
}
return encoding.EncodeStringDescending(b, string(*t)), nil
case *parser.DDate:
if dir == encoding.Ascending {
return encoding.EncodeVarintAscending(b, int64(*t)), nil
}
return encoding.EncodeVarintDescending(b, int64(*t)), nil
case *parser.DTimestamp:
if dir == encoding.Ascending {
return encoding.EncodeTimeAscending(b, t.Time), nil
}
return encoding.EncodeTimeDescending(b, t.Time), nil
case *parser.DTimestampTZ:
if dir == encoding.Ascending {
return encoding.EncodeTimeAscending(b, t.Time), nil
}
return encoding.EncodeTimeDescending(b, t.Time), nil
case *parser.DInterval:
if dir == encoding.Ascending {
return encoding.EncodeDurationAscending(b, t.Duration)
}
return encoding.EncodeDurationDescending(b, t.Duration)
case *parser.DTuple:
for _, datum := range *t {
var err error
b, err = EncodeTableKey(b, datum, dir)
if err != nil {
return nil, err
}
}
return b, nil
}
return nil, util.Errorf("unable to encode table key: %T", val)
}示例3: TestPrettyPrint
func TestPrettyPrint(t *testing.T) {
tm, _ := time.Parse(time.RFC3339Nano, "2016-03-30T13:40:35.053725008Z")
duration := duration.Duration{Months: 1, Days: 1, Nanos: 1 * time.Second.Nanoseconds()}
durationAsc, _ := encoding.EncodeDurationAscending(nil, duration)
durationDesc, _ := encoding.EncodeDurationDescending(nil, duration)
txnID := uuid.NewV4()
// The following test cases encode keys with a mixture of ascending and descending direction,
// but always decode keys in the ascending direction. This is why some of the decoded values
// seem bizarre.
testCases := []struct {
key roachpb.Key
exp string
}{
// local
{StoreIdentKey(), "/Local/Store/storeIdent"},
{StoreGossipKey(), "/Local/Store/gossipBootstrap"},
{AbortCacheKey(roachpb.RangeID(1000001), txnID), fmt.Sprintf(`/Local/RangeID/1000001/r/AbortCache/%q`, txnID)},
{RaftTombstoneKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/r/RaftTombstone"},
{RaftAppliedIndexKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/r/RaftAppliedIndex"},
{LeaseAppliedIndexKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/r/LeaseAppliedIndex"},
{RaftTruncatedStateKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/r/RaftTruncatedState"},
{RangeLeaderLeaseKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/r/RangeLeaderLease"},
{RangeStatsKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/r/RangeStats"},
{RangeFrozenStatusKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/r/RangeFrozenStatus"},
{RangeLastGCKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/r/RangeLastGC"},
{RaftHardStateKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/u/RaftHardState"},
{RaftLastIndexKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/u/RaftLastIndex"},
{RaftLogKey(roachpb.RangeID(1000001), uint64(200001)), "/Local/RangeID/1000001/u/RaftLog/logIndex:200001"},
{RangeLastReplicaGCTimestampKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/u/RangeLastReplicaGCTimestamp"},
{RangeLastVerificationTimestampKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/u/RangeLastVerificationTimestamp"},
{MakeRangeKeyPrefix(roachpb.RKey("ok")), `/Local/Range/"ok"`},
{RangeDescriptorKey(roachpb.RKey("111")), `/Local/Range/"111"/RangeDescriptor`},
{RangeTreeNodeKey(roachpb.RKey("111")), `/Local/Range/"111"/RangeTreeNode`},
{TransactionKey(roachpb.Key("111"), txnID), fmt.Sprintf(`/Local/Range/"111"/Transaction/addrKey:/id:%q`, txnID)},
{LocalMax, `/Meta1/""`}, // LocalMax == Meta1Prefix
// system
{makeKey(Meta2Prefix, roachpb.Key("foo")), `/Meta2/"foo"`},
{makeKey(Meta1Prefix, roachpb.Key("foo")), `/Meta1/"foo"`},
{RangeMetaKey(roachpb.RKey("f")), `/Meta2/"f"`},
{NodeStatusKey(1111), "/System/StatusNode/1111"},
{SystemMax, "/System/Max"},
// key of key
{RangeMetaKey(roachpb.RKey(MakeRangeKeyPrefix(roachpb.RKey("ok")))), `/Meta2/Local/Range/"ok"`},
{RangeMetaKey(roachpb.RKey(makeKey(MakeTablePrefix(42), roachpb.RKey("foo")))), `/Meta2/Table/42/"foo"`},
{RangeMetaKey(roachpb.RKey(makeKey(Meta2Prefix, roachpb.Key("foo")))), `/Meta1/"foo"`},
// table
{UserTableDataMin, "/Table/50"},
{MakeTablePrefix(111), "/Table/111"},
{makeKey(MakeTablePrefix(42), roachpb.RKey("foo")), `/Table/42/"foo"`},
{makeKey(MakeTablePrefix(42),
roachpb.RKey(encoding.EncodeFloatAscending(nil, float64(233.221112)))),
"/Table/42/233.221112"},
{makeKey(MakeTablePrefix(42),
roachpb.RKey(encoding.EncodeFloatDescending(nil, float64(-233.221112)))),
"/Table/42/233.221112"},
{makeKey(MakeTablePrefix(42),
roachpb.RKey(encoding.EncodeFloatAscending(nil, math.Inf(1)))),
"/Table/42/+Inf"},
{makeKey(MakeTablePrefix(42),
roachpb.RKey(encoding.EncodeFloatAscending(nil, math.NaN()))),
"/Table/42/NaN"},
{makeKey(MakeTablePrefix(42),
roachpb.RKey(encoding.EncodeVarintAscending(nil, 1222)),
roachpb.RKey(encoding.EncodeStringAscending(nil, "handsome man"))),
`/Table/42/1222/"handsome man"`},
{makeKey(MakeTablePrefix(42),
roachpb.RKey(encoding.EncodeVarintAscending(nil, 1222))),
`/Table/42/1222`},
{makeKey(MakeTablePrefix(42),
roachpb.RKey(encoding.EncodeVarintDescending(nil, 1222))),
`/Table/42/-1223`},
{makeKey(MakeTablePrefix(42),
roachpb.RKey(encoding.EncodeBytesAscending(nil, []byte{1, 2, 8, 255}))),
`/Table/42/"\x01\x02\b\xff"`},
{makeKey(MakeTablePrefix(42),
roachpb.RKey(encoding.EncodeBytesAscending(nil, []byte{1, 2, 8, 255})),
roachpb.RKey("bar")), `/Table/42/"\x01\x02\b\xff"/"bar"`},
{makeKey(MakeTablePrefix(42),
roachpb.RKey(encoding.EncodeBytesDescending(nil, []byte{1, 2, 8, 255})),
roachpb.RKey("bar")), `/Table/42/"\x01\x02\b\xff"/"bar"`},
{makeKey(MakeTablePrefix(42),
roachpb.RKey(encoding.EncodeNullAscending(nil))), "/Table/42/NULL"},
{makeKey(MakeTablePrefix(42),
roachpb.RKey(encoding.EncodeNotNullAscending(nil))), "/Table/42/#"},
{makeKey(MakeTablePrefix(42),
roachpb.RKey(encoding.EncodeTimeAscending(nil, tm))),
"/Table/42/2016-03-30T13:40:35.053725008Z"},
{makeKey(MakeTablePrefix(42),
roachpb.RKey(encoding.EncodeTimeDescending(nil, tm))),
//.........这里部分代码省略.........
示例4: encodeTableKey
// Encodes `val` into `b` and returns the new buffer.
func encodeTableKey(b []byte, val parser.Datum, dir encoding.Direction) ([]byte, *roachpb.Error) {
if (dir != encoding.Ascending) && (dir != encoding.Descending) {
return nil, roachpb.NewErrorf("invalid direction: %d", dir)
}
if val == parser.DNull {
if dir == encoding.Ascending {
return encoding.EncodeNullAscending(b), nil
}
return encoding.EncodeNullDescending(b), nil
}
switch t := val.(type) {
case parser.DBool:
var x int64
if t {
x = 1
} else {
x = 0
}
if dir == encoding.Ascending {
return encoding.EncodeVarintAscending(b, x), nil
}
return encoding.EncodeVarintDescending(b, x), nil
case parser.DInt:
if dir == encoding.Ascending {
return encoding.EncodeVarintAscending(b, int64(t)), nil
}
return encoding.EncodeVarintDescending(b, int64(t)), nil
case parser.DFloat:
if dir == encoding.Ascending {
return encoding.EncodeFloatAscending(b, float64(t)), nil
}
return encoding.EncodeFloatDescending(b, float64(t)), nil
case parser.DDecimal:
if dir == encoding.Ascending {
return encoding.EncodeDecimalAscending(b, t.Decimal), nil
}
return encoding.EncodeDecimalDescending(b, t.Decimal), nil
case parser.DString:
if dir == encoding.Ascending {
return encoding.EncodeStringAscending(b, string(t)), nil
}
return encoding.EncodeStringDescending(b, string(t)), nil
case parser.DBytes:
if dir == encoding.Ascending {
return encoding.EncodeStringAscending(b, string(t)), nil
}
return encoding.EncodeStringDescending(b, string(t)), nil
case parser.DDate:
if dir == encoding.Ascending {
return encoding.EncodeVarintAscending(b, int64(t)), nil
}
return encoding.EncodeVarintDescending(b, int64(t)), nil
case parser.DTimestamp:
if dir == encoding.Ascending {
return encoding.EncodeTimeAscending(b, t.Time), nil
}
return encoding.EncodeTimeDescending(b, t.Time), nil
case parser.DInterval:
if dir == encoding.Ascending {
return encoding.EncodeVarintAscending(b, int64(t.Duration)), nil
}
return encoding.EncodeVarintDescending(b, int64(t.Duration)), nil
}
return nil, roachpb.NewUErrorf("unable to encode table key: %T", val)
}示例5: TestStoreRangeSplitRaceUninitializedRHS
// TestStoreRangeSplitRaceUninitializedRHS reproduces #7600 (before it was
// fixed). While splits are happening, we simulate incoming messages for the
// right-hand side to trigger a race between the creation of the proper replica
// and the uninitialized replica reacting to messages.
func TestStoreRangeSplitRaceUninitializedRHS(t *testing.T) {
defer leaktest.AfterTest(t)()
mtc := &multiTestContext{}
storeCtx := storage.TestStoreContext()
// An aggressive tick interval lets groups communicate more and thus
// triggers test failures much more reliably. We can't go too aggressive
// or race tests never make any progress.
storeCtx.RaftTickInterval = 50 * time.Millisecond
storeCtx.RaftElectionTimeoutTicks = 2
currentTrigger := make(chan *roachpb.SplitTrigger)
seen := make(map[storagebase.CmdIDKey]struct{})
storeCtx.TestingKnobs.TestingCommandFilter = func(args storagebase.FilterArgs) *roachpb.Error {
et, ok := args.Req.(*roachpb.EndTransactionRequest)
if !ok || et.InternalCommitTrigger == nil {
return nil
}
trigger := protoutil.Clone(et.InternalCommitTrigger.GetSplitTrigger()).(*roachpb.SplitTrigger)
if trigger != nil && len(trigger.NewDesc.Replicas) == 2 && args.Hdr.Txn.Epoch == 0 && args.Sid == mtc.stores[0].StoreID() {
if _, ok := seen[args.CmdID]; ok {
return nil
}
// Without replay protection, a single reproposal locks up the
// test.
seen[args.CmdID] = struct{}{}
currentTrigger <- trigger
return roachpb.NewError(roachpb.NewReadWithinUncertaintyIntervalError(args.Hdr.Timestamp, args.Hdr.Timestamp))
}
return nil
}
mtc.storeContext = &storeCtx
mtc.Start(t, 2)
defer mtc.Stop()
leftRange := mtc.stores[0].LookupReplica(roachpb.RKey("a"), nil)
// We'll fake messages from term 1, ..., .magicIters-1. The exact number
// doesn't matter for anything but for its likelihood of triggering the
// race.
const magicIters = 5
// Replicate the left range onto the second node. We don't wait since we
// don't actually care what the second node does. All we want is that the
// first node isn't surprised by messages from that node.
mtc.replicateRange(leftRange.RangeID, 1)
for i := 0; i < 10; i++ {
var wg sync.WaitGroup
wg.Add(2)
go func() {
defer wg.Done()
// Split the data range. The split keys are chosen so that they move
// towards "a" (so that the range being split is always the first
// range).
splitKey := roachpb.Key(encoding.EncodeVarintDescending([]byte("a"), int64(i)))
splitArgs := adminSplitArgs(keys.SystemMax, splitKey)
if _, pErr := client.SendWrapped(mtc.distSenders[0], nil, &splitArgs); pErr != nil {
t.Fatal(pErr)
}
}()
go func() {
defer wg.Done()
trigger := <-currentTrigger // our own copy
// Make sure the first node is first for convenience.
replicas := trigger.NewDesc.Replicas
if replicas[0].NodeID > replicas[1].NodeID {
tmp := replicas[1]
replicas[1] = replicas[0]
replicas[0] = tmp
}
// Send a few vote requests which look like they're from the other
// node's right hand side of the split. This triggers a race which
// is discussed in #7600 (briefly, the creation of the right hand
// side in the split trigger was racing with the uninitialized
// version for the same group, resulting in clobbered HardState).
for term := uint64(1); term < magicIters; term++ {
if err := mtc.stores[0].HandleRaftMessage(&storage.RaftMessageRequest{
RangeID: trigger.NewDesc.RangeID,
ToReplica: replicas[0],
FromReplica: replicas[1],
Message: raftpb.Message{
Type: raftpb.MsgVote,
To: uint64(replicas[0].ReplicaID),
From: uint64(replicas[1].ReplicaID),
Term: term,
},
}); err != nil {
t.Error(err)
}
}
}()
wg.Wait()
}
//.........这里部分代码省略.........