keys

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 Go to latest Published: Mar 24, 2017 License: Apache-2.0 Imports: 9 Imported by: 0

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Index

Constants

View Source 
const (
	// MaxSystemConfigDescID is the maximum system descriptor ID that will be
	// gossiped as part of the SystemConfig. Be careful adding new descriptors to
	// this ID range.
	MaxSystemConfigDescID = 10

	// MaxReservedDescID is the maximum value of reserved descriptor
	// IDs. Reserved IDs are used by namespaces and tables used internally by
	// cockroach.
	MaxReservedDescID = 49

	// VirtualDescriptorID is the ID used by all virtual descriptors.
	VirtualDescriptorID = math.MaxUint32

	// RootNamespaceID is the ID of the root namespace.
	RootNamespaceID = 0

	// SystemDatabaseID and following are the database/table IDs for objects
	// in the system span.
	// NOTE: IDs must be <= MaxSystemConfigDescID.
	SystemDatabaseID  = 1
	NamespaceTableID  = 2
	DescriptorTableID = 3
	UsersTableID      = 4
	ZonesTableID      = 5

	// Reserved IDs for other system tables. If you're adding a new system table,
	// it probably belongs here.
	// NOTE: IDs must be <= MaxReservedDescID.
	LeaseTableID      = 11
	EventLogTableID   = 12
	RangeEventTableID = 13
	UITableID         = 14
	JobsTableID       = 15
)

Various IDs used by the structured data layer. NOTE: these must not change during the lifetime of a cluster.

View Source 
const SentinelFamilyID = 0

SentinelFamilyID indicates that MakeFamilyKey should make a sentinel key.

Variables

View Source 
var (

	// LocalMax is the end of the local key range. It is itself a global
	// key.
	LocalMax = roachpb.Key{localMaxByte}

	// LocalRangeIDPrefix is the prefix identifying per-range data
	// indexed by Range ID. The Range ID is appended to this prefix,
	// encoded using EncodeUvarint. The specific sort of per-range
	// metadata is identified by one of the suffixes listed below, along
	// with potentially additional encoded key info, for instance in the
	// case of abort cache entry.
	//
	// NOTE: LocalRangeIDPrefix must be kept in sync with the value
	// in storage/engine/rocksdb/db.cc.
	LocalRangeIDPrefix = roachpb.RKey(makeKey(localPrefix, roachpb.Key("i")))

	// LocalAbortCacheSuffix is the suffix for abort cache entries. The
	// abort cache protects a transaction from re-reading its own intents
	// after it's been aborted.
	LocalAbortCacheSuffix = []byte("abc-")
	// LocalRangeFrozenStatusSuffix is the suffix for a frozen status.
	LocalRangeFrozenStatusSuffix = []byte("fzn-")
	// LocalRangeLastGCSuffix is the suffix for the last GC.
	LocalRangeLastGCSuffix = []byte("lgc-")
	// LocalRaftAppliedIndexSuffix is the suffix for the raft applied index.
	LocalRaftAppliedIndexSuffix = []byte("rfta")
	// LocalRaftTombstoneSuffix is the suffix for the raft tombstone.
	LocalRaftTombstoneSuffix = []byte("rftb")
	// LocalRaftTruncatedStateSuffix is the suffix for the RaftTruncatedState.
	LocalRaftTruncatedStateSuffix = []byte("rftt")
	// LocalRangeLeaseSuffix is the suffix for a range lease.
	LocalRangeLeaseSuffix = []byte("rll-")
	// LocalLeaseAppliedIndexSuffix is the suffix for the applied lease index.
	LocalLeaseAppliedIndexSuffix = []byte("rlla")
	// LocalRangeStatsSuffix is the suffix for range statistics.
	LocalRangeStatsSuffix = []byte("stat")
	// LocalTxnSpanGCThresholdSuffix is the suffix for the last txn span GC's
	// threshold.
	LocalTxnSpanGCThresholdSuffix = []byte("tst-")

	// LocalRaftHardStateSuffix is the Suffix for the raft HardState.
	LocalRaftHardStateSuffix = []byte("rfth")
	// LocalRaftLastIndexSuffix is the suffix for raft's last index.
	LocalRaftLastIndexSuffix = []byte("rfti")
	// LocalRaftLogSuffix is the suffix for the raft log.
	LocalRaftLogSuffix = []byte("rftl")
	// LocalRangeLastReplicaGCTimestampSuffix is the suffix for a range's
	// last replica GC timestamp (for GC of old replicas).
	LocalRangeLastReplicaGCTimestampSuffix = []byte("rlrt")
	// LocalRangeLastVerificationTimestampSuffixDeprecated is the suffix for a range's
	// last verification timestamp (for checking integrity of on-disk data).
	// Note: DEPRECATED.
	LocalRangeLastVerificationTimestampSuffixDeprecated = []byte("rlvt")
	// LocalRangeReplicaDestroyedErrorSuffix is the suffix for a range's replica
	// destroyed error (for marking replicas as dead).
	LocalRangeReplicaDestroyedErrorSuffix = []byte("rrde")

	// LocalRangePrefix is the prefix identifying per-range data indexed
	// by range key (either start key, or some key in the range). The
	// key is appended to this prefix, encoded using EncodeBytes. The
	// specific sort of per-range metadata is identified by one of the
	// suffixes listed below, along with potentially additional encoded
	// key info, such as the txn ID in the case of a transaction record.
	//
	// NOTE: LocalRangePrefix must be kept in sync with the value in
	// storage/engine/rocksdb/db.cc.
	LocalRangePrefix = roachpb.Key(makeKey(localPrefix, roachpb.RKey("k")))
	LocalRangeMax    = LocalRangePrefix.PrefixEnd()
	// LocalRangeDescriptorSuffix is the suffix for keys storing
	// range descriptors. The value is a struct of type RangeDescriptor.
	LocalRangeDescriptorSuffix = roachpb.RKey("rdsc")
	// LocalTransactionSuffix specifies the key suffix for
	// transaction records. The additional detail is the transaction id.
	// NOTE: if this value changes, it must be updated in C++
	// (storage/engine/rocksdb/db.cc).
	LocalTransactionSuffix = roachpb.RKey("txn-")
	// LocalQueueLastProcessedSuffix is the suffix for replica queue state keys.
	LocalQueueLastProcessedSuffix = roachpb.RKey("qlpt")

	// Meta1Prefix is the first level of key addressing. It is selected such that
	// all range addressing records sort before any system tables which they
	// might describe. The value is a RangeDescriptor struct.
	Meta1Prefix = roachpb.Key{meta1PrefixByte}
	// Meta2Prefix is the second level of key addressing. The value is a
	// RangeDescriptor struct.
	Meta2Prefix = roachpb.Key{meta2PrefixByte}
	// Meta1KeyMax is the end of the range of the first level of key addressing.
	// The value is a RangeDescriptor struct.
	Meta1KeyMax = roachpb.Key(makeKey(Meta1Prefix, roachpb.RKeyMax))
	// Meta2KeyMax is the end of the range of the second level of key addressing.
	// The value is a RangeDescriptor struct.
	Meta2KeyMax = roachpb.Key(makeKey(Meta2Prefix, roachpb.RKeyMax))

	// MetaMin is the start of the range of addressing keys.
	MetaMin = Meta1Prefix
	// MetaMax is the end of the range of addressing keys.
	MetaMax = roachpb.Key{metaMaxByte}

	// SystemPrefix indicates the beginning of the key range for
	// global, system data which are replicated across the cluster.
	SystemPrefix = roachpb.Key{systemPrefixByte}
	SystemMax    = roachpb.Key{systemMaxByte}

	// MigrationPrefix specifies the key prefix to store all migration details.
	MigrationPrefix = roachpb.Key(makeKey(SystemPrefix, roachpb.RKey("system-version/")))

	// MigrationKeyMax is the maximum value for any system migration key.
	MigrationKeyMax = MigrationPrefix.PrefixEnd()

	// MigrationLease is the key that nodes must take a lease on in order to run
	// system migrations on the cluster.
	MigrationLease = roachpb.Key(makeKey(MigrationPrefix, roachpb.RKey("lease")))

	// NodeLivenessPrefix specifies the key prefix for the node liveness
	// table.  Note that this should sort before the rest of the system
	// keyspace in order to limit the number of ranges which must use
	// expiration-based range leases instead of the more efficient
	// node-liveness epoch-based range leases (see
	// https://github.com/cockroachdb/cockroach/blob/master/docs/RFCS/range_leases.md)
	NodeLivenessPrefix = roachpb.Key(makeKey(SystemPrefix, roachpb.RKey("\x00liveness-")))

	// NodeLivenessKeyMax is the maximum value for any node liveness key.
	NodeLivenessKeyMax = NodeLivenessPrefix.PrefixEnd()

	// DescIDGenerator is the global descriptor ID generator sequence used for
	// table and namespace IDs.
	DescIDGenerator = roachpb.Key(makeKey(SystemPrefix, roachpb.RKey("desc-idgen")))
	// NodeIDGenerator is the global node ID generator sequence.
	NodeIDGenerator = roachpb.Key(makeKey(SystemPrefix, roachpb.RKey("node-idgen")))
	// RangeIDGenerator is the global range ID generator sequence.
	RangeIDGenerator = roachpb.Key(makeKey(SystemPrefix, roachpb.RKey("range-idgen")))
	// StoreIDGenerator is the global store ID generator sequence.
	StoreIDGenerator = roachpb.Key(makeKey(SystemPrefix, roachpb.RKey("store-idgen")))

	// StatusPrefix specifies the key prefix to store all status details.
	StatusPrefix = roachpb.Key(makeKey(SystemPrefix, roachpb.RKey("status-")))
	// StatusNodePrefix stores all status info for nodes.
	StatusNodePrefix = roachpb.Key(makeKey(StatusPrefix, roachpb.RKey("node-")))

	// TimeseriesPrefix is the key prefix for all timeseries data.
	TimeseriesPrefix = roachpb.Key(makeKey(SystemPrefix, roachpb.RKey("tsd")))

	// ReportUsagePrefix is the key prefix for node usage report times.
	ReportUsagePrefix = roachpb.Key(makeKey(SystemPrefix, roachpb.RKey("update-")))

	// TableDataMin is the start of the range of table data keys.
	TableDataMin = roachpb.Key(encoding.EncodeVarintAscending(nil, 0))
	// TableDataMin is the end of the range of table data keys.
	TableDataMax = roachpb.Key(encoding.EncodeVarintAscending(nil, math.MaxInt64))

	// SystemConfigSplitKey is the key to split at immediately prior to the
	// system config span. NB: Split keys need to be valid column keys.
	SystemConfigSplitKey = MakeRowSentinelKey(TableDataMin)
	// SystemConfigTableDataMax is the end key of system config span.
	SystemConfigTableDataMax = roachpb.Key(MakeTablePrefix(MaxSystemConfigDescID + 1))

	// UserTableDataMin is the start key of user structured data.
	UserTableDataMin = roachpb.Key(MakeTablePrefix(MaxReservedDescID + 1))

	// MaxKey is the infinity marker which is larger than any other key.
	MaxKey = roachpb.KeyMax
	// MinKey is a minimum key value which sorts before all other keys.
	MinKey = roachpb.KeyMin
)

Constants for system-reserved keys in the KV map.

Note: preserve group-wise ordering when adding new constants.

View Source 
var (
	// Meta1Span holds all first level addressing.
	Meta1Span = roachpb.Span{Key: roachpb.KeyMin, EndKey: Meta2Prefix}

	// NodeLivenessSpan holds the liveness records for nodes in the cluster.
	NodeLivenessSpan = roachpb.Span{Key: NodeLivenessPrefix, EndKey: NodeLivenessKeyMax}

	// SystemConfigSpan is the range of system objects which will be gossiped.
	SystemConfigSpan = roachpb.Span{Key: SystemConfigSplitKey, EndKey: SystemConfigTableDataMax}

	// UserDataSpan is the non-meta and non-structured portion of the key space.
	UserDataSpan = roachpb.Span{Key: SystemMax, EndKey: TableDataMin}

	// NoSplitSpans describes the ranges that should never be split.
	// Meta1Span: needed to find other ranges.
	// NodeLivenessSpan: liveness information on nodes in the cluster.
	// SystemConfigSpan: system objects which will be gossiped.
	NoSplitSpans = []roachpb.Span{Meta1Span, NodeLivenessSpan, SystemConfigSpan}
)
View Source 
var PrettyPrintTimeseriesKey func(key roachpb.Key) string

PrettyPrintTimeseriesKey is a hook for pretty printing a timeseries key. The timeseries key prefix will already have been stripped off.

Functions

func AbortCacheKey 

func AbortCacheKey(rangeID roachpb.RangeID, txnID uuid.UUID) roachpb.Key

AbortCacheKey returns a range-local key by Range ID for an abort cache entry, with detail specified by encoding the supplied transaction ID.

func Addr 

func Addr(k roachpb.Key) (roachpb.RKey, error)

Addr returns the address for the key, used to lookup the range containing the key. In the normal case, this is simply the key's value. However, for local keys, such as transaction records, range-spanning binary tree node pointers, the address is the inner encoded key, with the local key prefix and the suffix and optional detail removed. This address unwrapping is performed repeatedly in the case of doubly-local keys. In this way, local keys address to the same range as non-local keys, but are stored separately so that they don't collide with user-space or global system keys.

However, not all local keys are addressable in the global map. Only range local keys incorporating a range key (start key or transaction key) are addressable (e.g. range metadata and txn records). Range local keys incorporating the Range ID are not (e.g. abort cache entries, and range stats).

func AddrUpperBound 

func AddrUpperBound(k roachpb.Key) (roachpb.RKey, error)

AddrUpperBound returns the address for the key, used to lookup the range containing the key. However, unlike Addr, it will return the following key that local range keys address to. This is necessary because range-local keys exist conceptually in the space between regular keys. Addr() returns the regular key that is just to the left of a range-local key, which is guaranteed to be located on the same range. AddrUpperBound() returns the regular key that is just to the right, which may not be on the same range but is suitable for use as the EndKey of a span involving a range-local key.

func DecodeAbortCacheKey 

func DecodeAbortCacheKey(key roachpb.Key, dest []byte) (uuid.UUID, error)

DecodeAbortCacheKey decodes the provided abort cache entry, returning the transaction ID.

func DecodeRangeIDKey 

func DecodeRangeIDKey(
	key roachpb.Key,
) (rangeID roachpb.RangeID, infix, suffix, detail roachpb.Key, err error)

DecodeRangeIDKey parses a local range ID key into range ID, infix, suffix, and detail.

func DecodeRangeKey 

func DecodeRangeKey(key roachpb.Key) (startKey, suffix, detail roachpb.Key, err error)

DecodeRangeKey decodes the range key into range start key, suffix and optional detail (may be nil).

func DecodeTablePrefix 

func DecodeTablePrefix(key roachpb.Key) ([]byte, uint64, error)

DecodeTablePrefix validates that the given key has a table prefix, returning the remainder of the key (with the prefix removed) and the decoded descriptor ID of the table.

func EnsureSafeSplitKey 

func EnsureSafeSplitKey(key roachpb.Key) (roachpb.Key, error)

EnsureSafeSplitKey transforms an SQL table key such that it is a valid split key (i.e. does not occur in the middle of a row).

func IsLocal 

func IsLocal(k roachpb.Key) bool

IsLocal performs a cheap check that returns true iff a range-local key is passed, that is, a key for which `Addr` would return a non-identical RKey (or a decoding error).

TODO(tschottdorf): we need a better name for these keys as only some of them are local and it's been identified as an area that is not understood by many of the team's developers. An obvious suggestion is "system" (as opposed to "user") keys, but unfortunately that name has already been claimed by a related (but not identical) concept.

func LeaseAppliedIndexKey 

func LeaseAppliedIndexKey(rangeID roachpb.RangeID) roachpb.Key

LeaseAppliedIndexKey returns a system-local key for a lease applied index.

func MakeFamilyKey 

func MakeFamilyKey(key []byte, famID uint32) []byte

MakeFamilyKey returns the key for the family in the given row by appending to the passed key. If SentinelFamilyID is passed, a sentinel key (which is the first key in a sql table row) is returned.

func MakeRangeIDPrefix 

func MakeRangeIDPrefix(rangeID roachpb.RangeID) roachpb.Key

MakeRangeIDPrefix creates a range-local key prefix from rangeID for both replicated and unreplicated data.

func MakeRangeIDReplicatedPrefix 

func MakeRangeIDReplicatedPrefix(rangeID roachpb.RangeID) roachpb.Key

MakeRangeIDReplicatedPrefix creates a range-local key prefix from rangeID for all Raft replicated data.

func MakeRangeIDUnreplicatedPrefix 

func MakeRangeIDUnreplicatedPrefix(rangeID roachpb.RangeID) roachpb.Key

MakeRangeIDUnreplicatedPrefix creates a range-local key prefix from rangeID for all unreplicated data.

func MakeRangeKey 

func MakeRangeKey(key, suffix, detail roachpb.RKey) roachpb.Key

MakeRangeKey creates a range-local key based on the range start key, metadata key suffix, and optional detail (e.g. the transaction ID for a txn record, etc.).

func MakeRangeKeyPrefix 

func MakeRangeKeyPrefix(key roachpb.RKey) roachpb.Key

MakeRangeKeyPrefix creates a key prefix under which all range-local keys can be found.

func MakeRowSentinelKey 

func MakeRowSentinelKey(key []byte) []byte

MakeRowSentinelKey creates the first key in a sql table row.

func MakeStoreKey 

func MakeStoreKey(suffix, detail roachpb.RKey) roachpb.Key

MakeStoreKey creates a store-local key based on the metadata key suffix, and optional detail.

func MakeTablePrefix 

func MakeTablePrefix(tableID uint32) []byte

MakeTablePrefix returns the key prefix used for the table's data.

func MassagePrettyPrintedSpanForTest 

func MassagePrettyPrintedSpanForTest(span string, dirs []encoding.Direction) string

MassagePrettyPrintedSpanForTest does some transformations on pretty-printed spans and keys: - if dirs is not nil, replace all ints with their ones' complement for descendingly-encoded columns. - strips line numbers from error messages.

func MetaReverseScanBounds 

func MetaReverseScanBounds(key roachpb.RKey) (roachpb.Key, roachpb.Key, error)

MetaReverseScanBounds returns the range [start,end) within which the desired meta record can be found by means of a reverse engine scan. The given key must be a valid RangeMetaKey as defined by validateRangeMetaKey.

func MetaScanBounds 

func MetaScanBounds(key roachpb.RKey) (roachpb.Key, roachpb.Key, error)

MetaScanBounds returns the range [start,end) within which the desired meta record can be found by means of an engine scan. The given key must be a valid RangeMetaKey as defined by validateRangeMetaKey. TODO(tschottdorf): a lot of casting going on inside.

func MustAddr 

func MustAddr(k roachpb.Key) roachpb.RKey

MustAddr calls Addr and panics on errors.

func NodeLastUsageReportKey 

func NodeLastUsageReportKey(nodeID roachpb.NodeID) roachpb.Key

NodeLastUsageReportKey returns the key for accessing last usage report time for a given node.

func NodeLivenessKey 

func NodeLivenessKey(nodeID roachpb.NodeID) roachpb.Key

NodeLivenessKey returns the key for the node liveness record.

func NodeStatusKey 

func NodeStatusKey(nodeID roachpb.NodeID) roachpb.Key

NodeStatusKey returns the key for accessing the node status for the specified node ID.

func PrettyPrint 

func PrettyPrint(key roachpb.Key) string

PrettyPrint prints the key in a human readable format:

Key's Format Key's Value /Local/... "\x01"+... 

/Store/...                                     "\x01s"+...
/RangeID/...                                   "\x01s"+[rangeid]
	/[rangeid]/AbortCache/[id]                   "\x01s"+[rangeid]+"abc-"+[id]
	/[rangeid]/Lease						                 "\x01s"+[rangeid]+"rfll"
	/[rangeid]/RaftTombstone                     "\x01s"+[rangeid]+"rftb"
	/[rangeid]/RaftHardState						         "\x01s"+[rangeid]+"rfth"
	/[rangeid]/RaftAppliedIndex						       "\x01s"+[rangeid]+"rfta"
	/[rangeid]/RaftLog/logIndex:[logIndex]       "\x01s"+[rangeid]+"rftl"+[logIndex]
	/[rangeid]/RaftTruncatedState                "\x01s"+[rangeid]+"rftt"
	/[rangeid]/RaftLastIndex                     "\x01s"+[rangeid]+"rfti"
	/[rangeid]/RangeLastReplicaGCTimestamp       "\x01s"+[rangeid]+"rlrt"
	/[rangeid]/RangeLastVerificationTimestamp    "\x01s"+[rangeid]+"rlvt"
	/[rangeid]/RangeStats                        "\x01s"+[rangeid]+"stat"
/Range/...                                     "\x01k"+...
	/RangeDescriptor/[key]                       "\x01k"+[key]+"rdsc"
	/Transaction/addrKey:[key]/id:[id]	         "\x01k"+[key]+"txn-"+[txn-id]
	/QueueLastProcessed/addrKey:[key]/id:[queue] "\x01k"+[key]+"qlpt"+[queue]

/Local/Max "\x02"

/Meta1/[key] "\x02"+[key] /Meta2/[key] "\x03"+[key] /System/... "\x04" 

/NodeLiveness/[key]                            "\x04\0x00liveness-"+[key]
/StatusNode/[key]                              "\x04status-node-"+[key]

/System/Max "\x05"

/Table/[key] [key]

/Min "" /Max "\xff\xff"

func PrettyPrintRange 

func PrettyPrintRange(b *bytes.Buffer, start, end roachpb.Key, maxChars int)

PrettyPrintRange pretty prints a compact representation of a key range. The output is of the form: 

commonPrefix{remainingStart-remainingEnd}

It prints at most maxChars, truncating components as needed. See TestPrettyPrintRange for some examples.

func QueueLastProcessedKey 

func QueueLastProcessedKey(key roachpb.RKey, queue string) roachpb.Key

QueueLastProcessedKey returns a range-local key for last processed timestamps for the named queue. These keys represent per-range last processed times.

func RaftAppliedIndexKey 

func RaftAppliedIndexKey(rangeID roachpb.RangeID) roachpb.Key

RaftAppliedIndexKey returns a system-local key for a raft applied index.

func RaftHardStateKey 

func RaftHardStateKey(rangeID roachpb.RangeID) roachpb.Key

RaftHardStateKey returns a system-local key for a Raft HardState.

func RaftLastIndexKey 

func RaftLastIndexKey(rangeID roachpb.RangeID) roachpb.Key

RaftLastIndexKey returns a system-local key for the last index of the Raft log.

func RaftLogKey 

func RaftLogKey(rangeID roachpb.RangeID, logIndex uint64) roachpb.Key

RaftLogKey returns a system-local key for a Raft log entry.

func RaftLogPrefix 

func RaftLogPrefix(rangeID roachpb.RangeID) roachpb.Key

RaftLogPrefix returns the system-local prefix shared by all entries in a Raft log.

func RaftTombstoneKey 

func RaftTombstoneKey(rangeID roachpb.RangeID) roachpb.Key

RaftTombstoneKey returns a system-local key for a raft tombstone.

func RaftTruncatedStateKey 

func RaftTruncatedStateKey(rangeID roachpb.RangeID) roachpb.Key

RaftTruncatedStateKey returns a system-local key for a RaftTruncatedState.

func Range 

func Range(ba roachpb.BatchRequest) (roachpb.RSpan, error)

Range returns a key range encompassing all the keys in the Batch.

func RangeDescriptorKey 

func RangeDescriptorKey(key roachpb.RKey) roachpb.Key

RangeDescriptorKey returns a range-local key for the descriptor for the range with specified key.

func RangeFrozenStatusKey 

func RangeFrozenStatusKey(rangeID roachpb.RangeID) roachpb.Key

RangeFrozenStatusKey returns a system-local key for the frozen status.

func RangeLastGCKey 

func RangeLastGCKey(rangeID roachpb.RangeID) roachpb.Key

RangeLastGCKey returns a system-local key for the last GC.

func RangeLastReplicaGCTimestampKey 

func RangeLastReplicaGCTimestampKey(rangeID roachpb.RangeID) roachpb.Key

RangeLastReplicaGCTimestampKey returns a range-local key for the range's last replica GC timestamp.

func RangeLastVerificationTimestampKeyDeprecated 

func RangeLastVerificationTimestampKeyDeprecated(rangeID roachpb.RangeID) roachpb.Key

RangeLastVerificationTimestampKeyDeprecated returns a range-local key for the range's last verification timestamp.

func RangeLeaseKey 

func RangeLeaseKey(rangeID roachpb.RangeID) roachpb.Key

RangeLeaseKey returns a system-local key for a range lease.

func RangeMetaKey 

func RangeMetaKey(key roachpb.RKey) roachpb.Key

RangeMetaKey returns a range metadata (meta1, meta2) indexing key for the given key.

- For RKeyMin, KeyMin is returned. - For a meta1 key, KeyMin is returned. - For a meta2 key, a meta1 key is returned. - For an ordinary key, a meta2 key is returned.

func RangeStatsKey 

func RangeStatsKey(rangeID roachpb.RangeID) roachpb.Key

RangeStatsKey returns the key for accessing the MVCCStats struct for the specified Range ID.

func RangeTxnSpanGCThresholdKey 

func RangeTxnSpanGCThresholdKey(rangeID roachpb.RangeID) roachpb.Key

RangeTxnSpanGCThresholdKey returns a system-local key for last used GC threshold on the txn span.

func StoreGossipKey 

func StoreGossipKey() roachpb.Key

StoreGossipKey returns a store-local key for the gossip bootstrap metadata.

func StoreIdentKey 

func StoreIdentKey() roachpb.Key

StoreIdentKey returns a store-local key for the store metadata.

func StoreLastUpKey 

func StoreLastUpKey() roachpb.Key

StoreLastUpKey returns the key for the store's "last up" timestamp.

func TransactionKey 

func TransactionKey(key roachpb.Key, txnID uuid.UUID) roachpb.Key

TransactionKey returns a transaction key based on the provided transaction key and ID. The base key is encoded in order to guarantee that all transaction records for a range sort together.

func UglyPrint 

func UglyPrint(input string) (_ roachpb.Key, rErr error)

UglyPrint is a partial right inverse to PrettyPrint: it takes a key formatted for human consumption and attempts to translate it into a roachpb.Key. Not all key types are supported and no optimization has been performed. This is intended for use in debugging only.

func UserKey 

func UserKey(key roachpb.RKey) roachpb.RKey

UserKey returns an ordinary key for the given range metadata (meta1, meta2) indexing key.

- For RKeyMin, Meta1Prefix is returned. - For a meta1 key, a meta2 key is returned. - For a meta2 key, an ordinary key is returned. - For an ordinary key, the input key is returned.

Types

type InvalidRangeMetaKeyError 

type InvalidRangeMetaKeyError struct {
	Msg string
	Key roachpb.Key
}

InvalidRangeMetaKeyError indicates that a Range Metadata key is somehow invalid.

func NewInvalidRangeMetaKeyError 

func NewInvalidRangeMetaKeyError(msg string, k []byte) *InvalidRangeMetaKeyError

NewInvalidRangeMetaKeyError returns a new InvalidRangeMetaKeyError

func (*InvalidRangeMetaKeyError) Error 

func (i *InvalidRangeMetaKeyError) Error() string

Error formats error string.

type RangeIDPrefixBuf 

type RangeIDPrefixBuf roachpb.Key

RangeIDPrefixBuf provides methods for generating range ID local keys while avoiding an allocation on every key generated. The generated keys are only valid until the next call to one of the key generation methods.

func MakeRangeIDPrefixBuf 

func MakeRangeIDPrefixBuf(rangeID roachpb.RangeID) RangeIDPrefixBuf

MakeRangeIDPrefixBuf creates a new range ID prefix buf suitable for generating the various range ID local keys.

func (RangeIDPrefixBuf) AbortCacheKey 

func (b RangeIDPrefixBuf) AbortCacheKey(txnID uuid.UUID) roachpb.Key

AbortCacheKey returns a range-local key by Range ID for an abort cache entry, with detail specified by encoding the supplied transaction ID.

func (RangeIDPrefixBuf) LeaseAppliedIndexKey 

func (b RangeIDPrefixBuf) LeaseAppliedIndexKey() roachpb.Key

LeaseAppliedIndexKey returns a system-local key for a lease applied index.

func (RangeIDPrefixBuf) RaftAppliedIndexKey 

func (b RangeIDPrefixBuf) RaftAppliedIndexKey() roachpb.Key

RaftAppliedIndexKey returns a system-local key for a raft applied index.

func (RangeIDPrefixBuf) RaftHardStateKey 

func (b RangeIDPrefixBuf) RaftHardStateKey() roachpb.Key

RaftHardStateKey returns a system-local key for a Raft HardState.

func (RangeIDPrefixBuf) RaftLastIndexKey 

func (b RangeIDPrefixBuf) RaftLastIndexKey() roachpb.Key

RaftLastIndexKey returns a system-local key for the last index of the Raft log.

func (RangeIDPrefixBuf) RaftLogKey 

func (b RangeIDPrefixBuf) RaftLogKey(logIndex uint64) roachpb.Key

RaftLogKey returns a system-local key for a Raft log entry.

func (RangeIDPrefixBuf) RaftLogPrefix 

func (b RangeIDPrefixBuf) RaftLogPrefix() roachpb.Key

RaftLogPrefix returns the system-local prefix shared by all entries in a Raft log.

func (RangeIDPrefixBuf) RaftTombstoneKey 

func (b RangeIDPrefixBuf) RaftTombstoneKey() roachpb.Key

RaftTombstoneKey returns a system-local key for a raft tombstone.

func (RangeIDPrefixBuf) RaftTruncatedStateKey 

func (b RangeIDPrefixBuf) RaftTruncatedStateKey() roachpb.Key

RaftTruncatedStateKey returns a system-local key for a RaftTruncatedState.

func (RangeIDPrefixBuf) RangeFrozenStatusKey 

func (b RangeIDPrefixBuf) RangeFrozenStatusKey() roachpb.Key

RangeFrozenStatusKey returns a system-local key for the frozen status.

func (RangeIDPrefixBuf) RangeLastGCKey 

func (b RangeIDPrefixBuf) RangeLastGCKey() roachpb.Key

RangeLastGCKey returns a system-local key for the last GC.

func (RangeIDPrefixBuf) RangeLastReplicaGCTimestampKey 

func (b RangeIDPrefixBuf) RangeLastReplicaGCTimestampKey() roachpb.Key

RangeLastReplicaGCTimestampKey returns a range-local key for the range's last replica GC timestamp.

func (RangeIDPrefixBuf) RangeLastVerificationTimestampKeyDeprecated 

func (b RangeIDPrefixBuf) RangeLastVerificationTimestampKeyDeprecated() roachpb.Key

RangeLastVerificationTimestampKeyDeprecated returns a range-local key for the range's last verification timestamp.

func (RangeIDPrefixBuf) RangeLeaseKey 

func (b RangeIDPrefixBuf) RangeLeaseKey() roachpb.Key

RangeLeaseKey returns a system-local key for a range lease.

func (RangeIDPrefixBuf) RangeReplicaDestroyedErrorKey 

func (b RangeIDPrefixBuf) RangeReplicaDestroyedErrorKey() roachpb.Key

RangeReplicaDestroyedErrorKey returns a range-local key for the range's replica destroyed error.

func (RangeIDPrefixBuf) RangeStatsKey 

func (b RangeIDPrefixBuf) RangeStatsKey() roachpb.Key

RangeStatsKey returns the key for accessing the MVCCStats struct for the specified Range ID.

func (RangeIDPrefixBuf) RangeTxnSpanGCThresholdKey 

func (b RangeIDPrefixBuf) RangeTxnSpanGCThresholdKey() roachpb.Key

RangeTxnSpanGCThresholdKey returns a system-local key for last used GC threshold on the txn span.

Source Files

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