[WIP] lint a bit, update deps
This commit is contained in:
eleksir
71
vendor/github.com/cockroachdb/pebble/internal/base/internal.go
generated
vendored
71
vendor/github.com/cockroachdb/pebble/internal/base/internal.go
generated
vendored
@@ -9,6 +9,17 @@ import (
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"fmt"
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"strconv"
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"strings"
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"github.com/cockroachdb/redact"
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)
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const (
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// SeqNumZero is the zero sequence number, set by compactions if they can
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// guarantee there are no keys underneath an internal key.
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SeqNumZero = uint64(0)
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// SeqNumStart is the first sequence number assigned to a key. Sequence
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// numbers 1-9 are reserved for potential future use.
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SeqNumStart = uint64(10)
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)
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// InternalKeyKind enumerates the kind of key: a deletion tombstone, a set
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@@ -24,6 +35,14 @@ const (
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//InternalKeyKindColumnFamilyDeletion InternalKeyKind = 4
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//InternalKeyKindColumnFamilyValue InternalKeyKind = 5
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//InternalKeyKindColumnFamilyMerge InternalKeyKind = 6
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// InternalKeyKindSingleDelete (SINGLEDEL) is a performance optimization
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// solely for compactions (to reduce write amp and space amp). Readers other
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// than compactions should treat SINGLEDEL as equivalent to a DEL.
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// Historically, it was simpler for readers other than compactions to treat
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// SINGLEDEL as equivalent to DEL, but as of the introduction of
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// InternalKeyKindSSTableInternalObsoleteBit, this is also necessary for
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// correctness.
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InternalKeyKindSingleDelete InternalKeyKind = 7
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//InternalKeyKindColumnFamilySingleDelete InternalKeyKind = 8
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//InternalKeyKindBeginPrepareXID InternalKeyKind = 9
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@@ -60,14 +79,21 @@ const (
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InternalKeyKindRangeKeyUnset InternalKeyKind = 20
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InternalKeyKindRangeKeySet InternalKeyKind = 21
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// InternalKeyIngestSST is used to distinguish a batch that corresponds to
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// InternalKeyKindIngestSST is used to distinguish a batch that corresponds to
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// the WAL entry for ingested sstables that are added to the flushable
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// queue. This InternalKeyKind cannot appear, amongst other key kinds in a
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// batch, or in an sstable.
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InternalKeyIngestSST InternalKeyKind = 22
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InternalKeyKindIngestSST InternalKeyKind = 22
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// This maximum value isn't part of the file format. It's unlikely,
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// but future extensions may increase this value.
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// InternalKeyKindDeleteSized keys behave identically to
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// InternalKeyKindDelete keys, except that they hold an associated uint64
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// value indicating the (len(key)+len(value)) of the shadowed entry the
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// tombstone is expected to delete. This value is used to inform compaction
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// heuristics, but is not required to be accurate for correctness.
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InternalKeyKindDeleteSized InternalKeyKind = 23
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// This maximum value isn't part of the file format. Future extensions may
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// increase this value.
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//
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// When constructing an internal key to pass to DB.Seek{GE,LE},
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// internalKeyComparer sorts decreasing by kind (after sorting increasing by
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@@ -75,14 +101,19 @@ const (
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// which sorts 'less than or equal to' any other valid internalKeyKind, when
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// searching for any kind of internal key formed by a certain user key and
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// seqNum.
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InternalKeyKindMax InternalKeyKind = 22
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InternalKeyKindMax InternalKeyKind = 23
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// Internal to the sstable format. Not exposed by any sstable iterator.
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// Declared here to prevent definition of valid key kinds that set this bit.
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InternalKeyKindSSTableInternalObsoleteBit InternalKeyKind = 64
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InternalKeyKindSSTableInternalObsoleteMask InternalKeyKind = 191
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// InternalKeyZeroSeqnumMaxTrailer is the largest trailer with a
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// zero sequence number.
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InternalKeyZeroSeqnumMaxTrailer = uint64(InternalKeyKindInvalid)
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InternalKeyZeroSeqnumMaxTrailer = uint64(255)
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// A marker for an invalid key.
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InternalKeyKindInvalid InternalKeyKind = 255
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InternalKeyKindInvalid InternalKeyKind = InternalKeyKindSSTableInternalObsoleteMask
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// InternalKeySeqNumBatch is a bit that is set on batch sequence numbers
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// which prevents those entries from being excluded from iteration.
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@@ -105,6 +136,9 @@ const (
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InternalKeyBoundaryRangeKey = (InternalKeySeqNumMax << 8) | uint64(InternalKeyKindRangeKeySet)
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)
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// Assert InternalKeyKindSSTableInternalObsoleteBit > InternalKeyKindMax
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const _ = uint(InternalKeyKindSSTableInternalObsoleteBit - InternalKeyKindMax - 1)
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var internalKeyKindNames = []string{
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InternalKeyKindDelete: "DEL",
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InternalKeyKindSet: "SET",
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@@ -117,7 +151,8 @@ var internalKeyKindNames = []string{
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InternalKeyKindRangeKeySet: "RANGEKEYSET",
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InternalKeyKindRangeKeyUnset: "RANGEKEYUNSET",
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InternalKeyKindRangeKeyDelete: "RANGEKEYDEL",
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InternalKeyIngestSST: "INGESTSST",
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InternalKeyKindIngestSST: "INGESTSST",
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InternalKeyKindDeleteSized: "DELSIZED",
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InternalKeyKindInvalid: "INVALID",
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}
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@@ -128,6 +163,11 @@ func (k InternalKeyKind) String() string {
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return fmt.Sprintf("UNKNOWN:%d", k)
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}
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// SafeFormat implements redact.SafeFormatter.
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func (k InternalKeyKind) SafeFormat(w redact.SafePrinter, _ rune) {
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w.Print(redact.SafeString(k.String()))
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}
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// InternalKey is a key used for the in-memory and on-disk partial DBs that
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// make up a pebble DB.
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//
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@@ -194,6 +234,7 @@ var kindsMap = map[string]InternalKeyKind{
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"DEL": InternalKeyKindDelete,
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"SINGLEDEL": InternalKeyKindSingleDelete,
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"RANGEDEL": InternalKeyKindRangeDelete,
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"LOGDATA": InternalKeyKindLogData,
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"SET": InternalKeyKindSet,
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"MERGE": InternalKeyKindMerge,
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"INVALID": InternalKeyKindInvalid,
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@@ -202,6 +243,8 @@ var kindsMap = map[string]InternalKeyKind{
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"RANGEKEYSET": InternalKeyKindRangeKeySet,
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"RANGEKEYUNSET": InternalKeyKindRangeKeyUnset,
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"RANGEKEYDEL": InternalKeyKindRangeKeyDelete,
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"INGESTSST": InternalKeyKindIngestSST,
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"DELSIZED": InternalKeyKindDeleteSized,
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}
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// ParseInternalKey parses the string representation of an internal key. The
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@@ -338,6 +381,11 @@ func (k InternalKey) SeqNum() uint64 {
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return k.Trailer >> 8
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}
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// SeqNumFromTrailer returns the sequence number component of a trailer.
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func SeqNumFromTrailer(t uint64) uint64 {
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return t >> 8
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}
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// Visible returns true if the key is visible at the specified snapshot
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// sequence number.
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func (k InternalKey) Visible(snapshot, batchSnapshot uint64) bool {
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@@ -395,6 +443,13 @@ func (k InternalKey) Clone() InternalKey {
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}
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}
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// CopyFrom converts this InternalKey into a clone of the passed-in InternalKey,
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// reusing any space already used for the current UserKey.
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func (k *InternalKey) CopyFrom(k2 InternalKey) {
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k.UserKey = append(k.UserKey[:0], k2.UserKey...)
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k.Trailer = k2.Trailer
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}
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// String returns a string representation of the key.
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func (k InternalKey) String() string {
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return fmt.Sprintf("%s#%d,%d", FormatBytes(k.UserKey), k.SeqNum(), k.Kind())
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