chore: update github.com/couchbase/gomemcached and github.com/couchbase/go-couchbase (#9419)
parent
8873a80276
commit
559fb6ccf0
@ -0,0 +1,123 @@
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package memcached
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import (
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"encoding/json"
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"fmt"
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)
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// Collection based filter
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type CollectionsFilter struct {
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ManifestUid uint64
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UseManifestUid bool
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StreamId uint16
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UseStreamId bool
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// Use either ScopeId OR CollectionsList, not both
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CollectionsList []uint32
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ScopeId uint32
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}
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type nonStreamIdNonResumeScopeMeta struct {
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ScopeId string `json:"scope"`
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}
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type nonStreamIdResumeScopeMeta struct {
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ManifestId string `json:"uid"`
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}
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type nonStreamIdNonResumeCollectionsMeta struct {
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CollectionsList []string `json:"collections"`
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}
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type nonStreamIdResumeCollectionsMeta struct {
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ManifestId string `json:"uid"`
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CollectionsList []string `json:"collections"`
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}
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type streamIdNonResumeCollectionsMeta struct {
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CollectionsList []string `json:"collections"`
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StreamId uint16 `json:"sid"`
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}
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type streamIdNonResumeScopeMeta struct {
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ScopeId string `json:"scope"`
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StreamId uint16 `json:"sid"`
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}
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func (c *CollectionsFilter) IsValid() error {
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if c.UseManifestUid {
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return fmt.Errorf("Not implemented yet")
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}
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if len(c.CollectionsList) > 0 && c.ScopeId > 0 {
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return fmt.Errorf("Collection list is specified but scope ID is also specified")
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}
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return nil
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}
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func (c *CollectionsFilter) outputCollectionsFilterColList() (outputList []string) {
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for _, collectionUint := range c.CollectionsList {
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outputList = append(outputList, fmt.Sprintf("%x", collectionUint))
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}
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return
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}
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func (c *CollectionsFilter) outputScopeId() string {
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return fmt.Sprintf("%x", c.ScopeId)
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}
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func (c *CollectionsFilter) ToStreamReqBody() ([]byte, error) {
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if err := c.IsValid(); err != nil {
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return nil, err
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}
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var output interface{}
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switch c.UseStreamId {
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case true:
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switch c.UseManifestUid {
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case true:
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// TODO
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return nil, fmt.Errorf("NotImplemented0")
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case false:
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switch len(c.CollectionsList) > 0 {
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case true:
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filter := &streamIdNonResumeCollectionsMeta{
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StreamId: c.StreamId,
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CollectionsList: c.outputCollectionsFilterColList(),
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}
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output = *filter
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case false:
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filter := &streamIdNonResumeScopeMeta{
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StreamId: c.StreamId,
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ScopeId: c.outputScopeId(),
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}
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output = *filter
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}
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}
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case false:
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switch c.UseManifestUid {
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case true:
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// TODO
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return nil, fmt.Errorf("NotImplemented1")
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case false:
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switch len(c.CollectionsList) > 0 {
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case true:
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filter := &nonStreamIdNonResumeCollectionsMeta{
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CollectionsList: c.outputCollectionsFilterColList(),
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}
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output = *filter
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case false:
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output = nonStreamIdNonResumeScopeMeta{ScopeId: c.outputScopeId()}
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}
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}
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}
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data, err := json.Marshal(output)
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if err != nil {
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return nil, err
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} else {
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return data, nil
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}
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}
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@ -0,0 +1,346 @@
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package memcached
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import (
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"encoding/binary"
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"fmt"
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"github.com/couchbase/gomemcached"
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"math"
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)
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type SystemEventType int
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const InvalidSysEvent SystemEventType = -1
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const (
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CollectionCreate SystemEventType = 0
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CollectionDrop SystemEventType = iota
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CollectionFlush SystemEventType = iota // KV did not implement
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ScopeCreate SystemEventType = iota
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ScopeDrop SystemEventType = iota
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CollectionChanged SystemEventType = iota
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)
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type ScopeCreateEvent interface {
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GetSystemEventName() (string, error)
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GetScopeId() (uint32, error)
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GetManifestId() (uint64, error)
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}
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type CollectionCreateEvent interface {
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GetSystemEventName() (string, error)
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GetScopeId() (uint32, error)
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GetCollectionId() (uint32, error)
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GetManifestId() (uint64, error)
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GetMaxTTL() (uint32, error)
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}
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type CollectionDropEvent interface {
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GetScopeId() (uint32, error)
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GetCollectionId() (uint32, error)
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GetManifestId() (uint64, error)
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}
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type ScopeDropEvent interface {
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GetScopeId() (uint32, error)
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GetManifestId() (uint64, error)
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}
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type CollectionChangedEvent interface {
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GetCollectionId() (uint32, error)
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GetManifestId() (uint64, error)
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GetMaxTTL() (uint32, error)
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}
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var ErrorInvalidOp error = fmt.Errorf("Invalid Operation")
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var ErrorInvalidVersion error = fmt.Errorf("Invalid version for parsing")
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var ErrorValueTooShort error = fmt.Errorf("Value length is too short")
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var ErrorNoMaxTTL error = fmt.Errorf("This event has no max TTL")
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// UprEvent memcached events for UPR streams.
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type UprEvent struct {
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Opcode gomemcached.CommandCode // Type of event
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Status gomemcached.Status // Response status
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VBucket uint16 // VBucket this event applies to
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DataType uint8 // data type
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Opaque uint16 // 16 MSB of opaque
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VBuuid uint64 // This field is set by downstream
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Flags uint32 // Item flags
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Expiry uint32 // Item expiration time
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Key, Value []byte // Item key/value
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OldValue []byte // TODO: TBD: old document value
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Cas uint64 // CAS value of the item
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Seqno uint64 // sequence number of the mutation
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RevSeqno uint64 // rev sequence number : deletions
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LockTime uint32 // Lock time
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MetadataSize uint16 // Metadata size
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SnapstartSeq uint64 // start sequence number of this snapshot
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SnapendSeq uint64 // End sequence number of the snapshot
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SnapshotType uint32 // 0: disk 1: memory
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FailoverLog *FailoverLog // Failover log containing vvuid and sequnce number
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Error error // Error value in case of a failure
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ExtMeta []byte // Extended Metadata
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AckSize uint32 // The number of bytes that can be Acked to DCP
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SystemEvent SystemEventType // Only valid if IsSystemEvent() is true
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SysEventVersion uint8 // Based on the version, the way Extra bytes is parsed is different
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ValueLen int // Cache it to avoid len() calls for performance
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CollectionId uint64 // Valid if Collection is in use
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}
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// FailoverLog containing vvuid and sequnce number
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type FailoverLog [][2]uint64
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func makeUprEvent(rq gomemcached.MCRequest, stream *UprStream, bytesReceivedFromDCP int) *UprEvent {
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event := &UprEvent{
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Opcode: rq.Opcode,
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VBucket: stream.Vbucket,
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VBuuid: stream.Vbuuid,
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Value: rq.Body,
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Cas: rq.Cas,
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ExtMeta: rq.ExtMeta,
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DataType: rq.DataType,
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ValueLen: len(rq.Body),
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SystemEvent: InvalidSysEvent,
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CollectionId: math.MaxUint64,
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}
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event.PopulateFieldsBasedOnStreamType(rq, stream.StreamType)
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// set AckSize for events that need to be acked to DCP,
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// i.e., events with CommandCodes that need to be buffered in DCP
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if _, ok := gomemcached.BufferedCommandCodeMap[rq.Opcode]; ok {
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event.AckSize = uint32(bytesReceivedFromDCP)
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}
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// 16 LSBits are used by client library to encode vbucket number.
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// 16 MSBits are left for application to multiplex on opaque value.
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event.Opaque = appOpaque(rq.Opaque)
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if len(rq.Extras) >= uprMutationExtraLen &&
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event.Opcode == gomemcached.UPR_MUTATION {
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event.Seqno = binary.BigEndian.Uint64(rq.Extras[:8])
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event.RevSeqno = binary.BigEndian.Uint64(rq.Extras[8:16])
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event.Flags = binary.BigEndian.Uint32(rq.Extras[16:20])
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event.Expiry = binary.BigEndian.Uint32(rq.Extras[20:24])
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event.LockTime = binary.BigEndian.Uint32(rq.Extras[24:28])
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event.MetadataSize = binary.BigEndian.Uint16(rq.Extras[28:30])
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} else if len(rq.Extras) >= uprDeletetionWithDeletionTimeExtraLen &&
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event.Opcode == gomemcached.UPR_DELETION {
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event.Seqno = binary.BigEndian.Uint64(rq.Extras[:8])
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event.RevSeqno = binary.BigEndian.Uint64(rq.Extras[8:16])
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event.Expiry = binary.BigEndian.Uint32(rq.Extras[16:20])
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} else if len(rq.Extras) >= uprDeletetionExtraLen &&
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event.Opcode == gomemcached.UPR_DELETION ||
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event.Opcode == gomemcached.UPR_EXPIRATION {
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event.Seqno = binary.BigEndian.Uint64(rq.Extras[:8])
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event.RevSeqno = binary.BigEndian.Uint64(rq.Extras[8:16])
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event.MetadataSize = binary.BigEndian.Uint16(rq.Extras[16:18])
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} else if len(rq.Extras) >= uprSnapshotExtraLen &&
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event.Opcode == gomemcached.UPR_SNAPSHOT {
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event.SnapstartSeq = binary.BigEndian.Uint64(rq.Extras[:8])
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event.SnapendSeq = binary.BigEndian.Uint64(rq.Extras[8:16])
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event.SnapshotType = binary.BigEndian.Uint32(rq.Extras[16:20])
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} else if event.IsSystemEvent() {
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event.PopulateEvent(rq.Extras)
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}
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return event
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}
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func (event *UprEvent) PopulateFieldsBasedOnStreamType(rq gomemcached.MCRequest, streamType DcpStreamType) {
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switch streamType {
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case CollectionsNonStreamId:
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switch rq.Opcode {
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// Only these will have CID encoded within the key
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case gomemcached.UPR_MUTATION,
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gomemcached.UPR_DELETION,
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gomemcached.UPR_EXPIRATION:
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uleb128 := Uleb128(rq.Key)
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result, bytesShifted := uleb128.ToUint64(rq.Keylen)
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event.CollectionId = result
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event.Key = rq.Key[bytesShifted:]
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default:
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event.Key = rq.Key
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}
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case CollectionsStreamId:
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// TODO - not implemented
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fallthrough
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case NonCollectionStream:
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// Let default behavior be legacy stream type
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fallthrough
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default:
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event.Key = rq.Key
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}
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}
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func (event *UprEvent) String() string {
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name := gomemcached.CommandNames[event.Opcode]
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if name == "" {
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name = fmt.Sprintf("#%d", event.Opcode)
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}
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return name
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}
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func (event *UprEvent) IsSnappyDataType() bool {
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return event.Opcode == gomemcached.UPR_MUTATION && (event.DataType&SnappyDataType > 0)
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}
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func (event *UprEvent) IsCollectionType() bool {
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return event.IsSystemEvent() || event.CollectionId <= math.MaxUint32
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}
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func (event *UprEvent) IsSystemEvent() bool {
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return event.Opcode == gomemcached.DCP_SYSTEM_EVENT
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}
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func (event *UprEvent) PopulateEvent(extras []byte) {
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if len(extras) < dcpSystemEventExtraLen {
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// Wrong length, don't parse
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return
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}
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event.Seqno = binary.BigEndian.Uint64(extras[:8])
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event.SystemEvent = SystemEventType(binary.BigEndian.Uint32(extras[8:12]))
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var versionTemp uint16 = binary.BigEndian.Uint16(extras[12:14])
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event.SysEventVersion = uint8(versionTemp >> 8)
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}
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func (event *UprEvent) GetSystemEventName() (string, error) {
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switch event.SystemEvent {
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case CollectionCreate:
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fallthrough
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case ScopeCreate:
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return string(event.Key), nil
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default:
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return "", ErrorInvalidOp
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}
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}
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func (event *UprEvent) GetManifestId() (uint64, error) {
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switch event.SystemEvent {
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// Version 0 only checks
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case CollectionChanged:
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fallthrough
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case ScopeDrop:
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fallthrough
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case ScopeCreate:
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fallthrough
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case CollectionDrop:
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if event.SysEventVersion > 0 {
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return 0, ErrorInvalidVersion
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}
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fallthrough
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case CollectionCreate:
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// CollectionCreate supports version 1
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if event.SysEventVersion > 1 {
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return 0, ErrorInvalidVersion
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}
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if event.ValueLen < 8 {
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return 0, ErrorValueTooShort
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}
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return binary.BigEndian.Uint64(event.Value[0:8]), nil
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default:
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return 0, ErrorInvalidOp
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}
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}
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func (event *UprEvent) GetCollectionId() (uint32, error) {
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switch event.SystemEvent {
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case CollectionDrop:
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if event.SysEventVersion > 0 {
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return 0, ErrorInvalidVersion
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}
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fallthrough
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case CollectionCreate:
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if event.SysEventVersion > 1 {
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return 0, ErrorInvalidVersion
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}
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if event.ValueLen < 16 {
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return 0, ErrorValueTooShort
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}
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return binary.BigEndian.Uint32(event.Value[12:16]), nil
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case CollectionChanged:
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if event.SysEventVersion > 0 {
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return 0, ErrorInvalidVersion
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}
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if event.ValueLen < 12 {
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return 0, ErrorValueTooShort
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}
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return binary.BigEndian.Uint32(event.Value[8:12]), nil
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default:
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return 0, ErrorInvalidOp
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}
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}
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func (event *UprEvent) GetScopeId() (uint32, error) {
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switch event.SystemEvent {
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// version 0 checks
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case ScopeCreate:
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fallthrough
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case ScopeDrop:
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fallthrough
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case CollectionDrop:
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if event.SysEventVersion > 0 {
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return 0, ErrorInvalidVersion
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}
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fallthrough
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case CollectionCreate:
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// CollectionCreate could be either 0 or 1
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if event.SysEventVersion > 1 {
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return 0, ErrorInvalidVersion
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}
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if event.ValueLen < 12 {
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return 0, ErrorValueTooShort
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}
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return binary.BigEndian.Uint32(event.Value[8:12]), nil
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default:
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return 0, ErrorInvalidOp
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}
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}
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func (event *UprEvent) GetMaxTTL() (uint32, error) {
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switch event.SystemEvent {
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case CollectionCreate:
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if event.SysEventVersion < 1 {
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return 0, ErrorNoMaxTTL
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}
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if event.ValueLen < 20 {
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return 0, ErrorValueTooShort
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}
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return binary.BigEndian.Uint32(event.Value[16:20]), nil
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case CollectionChanged:
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if event.SysEventVersion > 0 {
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return 0, ErrorInvalidVersion
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}
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if event.ValueLen < 16 {
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return 0, ErrorValueTooShort
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}
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return binary.BigEndian.Uint32(event.Value[12:16]), nil
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default:
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return 0, ErrorInvalidOp
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}
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}
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type Uleb128 []byte
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func (u Uleb128) ToUint64(cachedLen int) (result uint64, bytesShifted int) {
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var shift uint = 0
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for curByte := 0; curByte < cachedLen; curByte++ {
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oneByte := u[curByte]
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last7Bits := 0x7f & oneByte
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result |= uint64(last7Bits) << shift
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bytesShifted++
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if oneByte&0x80 == 0 {
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break
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}
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shift += 7
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}
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return
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}
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@ -0,0 +1,381 @@
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package gomemcached
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import (
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"encoding/binary"
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"fmt"
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)
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type FrameObjType int
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const (
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FrameBarrier FrameObjType = iota
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FrameDurability FrameObjType = iota
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FrameDcpStreamId FrameObjType = iota
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FrameOpenTracing FrameObjType = iota
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)
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type FrameInfo struct {
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ObjId FrameObjType
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ObjLen int
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ObjData []byte
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}
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var ErrorInvalidOp error = fmt.Errorf("Specified method is not applicable")
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var ErrorObjLenNotMatch error = fmt.Errorf("Object length does not match data")
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func (f *FrameInfo) Validate() error {
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switch f.ObjId {
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case FrameBarrier:
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if f.ObjLen != 0 {
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return fmt.Errorf("Invalid FrameBarrier - length is %v\n", f.ObjLen)
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} else if f.ObjLen != len(f.ObjData) {
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return ErrorObjLenNotMatch
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}
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case FrameDurability:
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if f.ObjLen != 1 && f.ObjLen != 3 {
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return fmt.Errorf("Invalid FrameDurability - length is %v\n", f.ObjLen)
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||||
} else if f.ObjLen != len(f.ObjData) {
|
||||
return ErrorObjLenNotMatch
|
||||
}
|
||||
case FrameDcpStreamId:
|
||||
if f.ObjLen != 2 {
|
||||
return fmt.Errorf("Invalid FrameDcpStreamId - length is %v\n", f.ObjLen)
|
||||
} else if f.ObjLen != len(f.ObjData) {
|
||||
return ErrorObjLenNotMatch
|
||||
}
|
||||
case FrameOpenTracing:
|
||||
if f.ObjLen == 0 {
|
||||
return fmt.Errorf("Invalid FrameOpenTracing - length must be > 0")
|
||||
} else if f.ObjLen != len(f.ObjData) {
|
||||
return ErrorObjLenNotMatch
|
||||
}
|
||||
default:
|
||||
return fmt.Errorf("Unknown FrameInfo type")
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (f *FrameInfo) GetStreamId() (uint16, error) {
|
||||
if f.ObjId != FrameDcpStreamId {
|
||||
return 0, ErrorInvalidOp
|
||||
}
|
||||
|
||||
var output uint16
|
||||
output = uint16(f.ObjData[0])
|
||||
output = output << 8
|
||||
output |= uint16(f.ObjData[1])
|
||||
return output, nil
|
||||
}
|
||||
|
||||
type DurabilityLvl uint8
|
||||
|
||||
const (
|
||||
DuraInvalid DurabilityLvl = iota // Not used (0x0)
|
||||
DuraMajority DurabilityLvl = iota // (0x01)
|
||||
DuraMajorityAndPersistOnMaster DurabilityLvl = iota // (0x02)
|
||||
DuraPersistToMajority DurabilityLvl = iota // (0x03)
|
||||
)
|
||||
|
||||
func (f *FrameInfo) GetDurabilityRequirements() (lvl DurabilityLvl, timeoutProvided bool, timeoutMs uint16, err error) {
|
||||
if f.ObjId != FrameDurability {
|
||||
err = ErrorInvalidOp
|
||||
return
|
||||
}
|
||||
if f.ObjLen != 1 && f.ObjLen != 3 {
|
||||
err = ErrorObjLenNotMatch
|
||||
return
|
||||
}
|
||||
|
||||
lvl = DurabilityLvl(uint8(f.ObjData[0]))
|
||||
|
||||
if f.ObjLen == 3 {
|
||||
timeoutProvided = true
|
||||
timeoutMs = binary.BigEndian.Uint16(f.ObjData[1:2])
|
||||
}
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
func incrementMarker(bitsToBeIncremented, byteIncrementCnt *int, framingElen, curObjIdx int) (int, error) {
|
||||
for *bitsToBeIncremented >= 8 {
|
||||
*byteIncrementCnt++
|
||||
*bitsToBeIncremented -= 8
|
||||
}
|
||||
marker := curObjIdx + *byteIncrementCnt
|
||||
if marker > framingElen {
|
||||
return -1, fmt.Errorf("Out of bounds")
|
||||
}
|
||||
return marker, nil
|
||||
}
|
||||
|
||||
// Right now, halfByteRemaining will always be false, because ObjID and Len haven't gotten that large yet
|
||||
func (f *FrameInfo) Bytes() (output []byte, halfByteRemaining bool) {
|
||||
// ObjIdentifier - 4 bits + ObjLength - 4 bits
|
||||
var idAndLen uint8
|
||||
idAndLen |= uint8(f.ObjId) << 4
|
||||
idAndLen |= uint8(f.ObjLen)
|
||||
output = append(output, byte(idAndLen))
|
||||
|
||||
// Rest is Data
|
||||
output = append(output, f.ObjData...)
|
||||
return
|
||||
}
|
||||
|
||||
func parseFrameInfoObjects(buf []byte, framingElen int) (objs []FrameInfo, err error, halfByteRemaining bool) {
|
||||
var curObjIdx int
|
||||
var byteIncrementCnt int
|
||||
var bitsToBeIncremented int
|
||||
var marker int
|
||||
|
||||
// Parse frameInfo objects
|
||||
for curObjIdx = 0; curObjIdx < framingElen; curObjIdx += byteIncrementCnt {
|
||||
byteIncrementCnt = 0
|
||||
var oneFrameObj FrameInfo
|
||||
|
||||
// First get the objId
|
||||
// -------------------------
|
||||
var objId int
|
||||
var objHeader uint8 = buf[curObjIdx]
|
||||
var objIdentifierRaw uint8
|
||||
if bitsToBeIncremented == 0 {
|
||||
// ObjHeader
|
||||
// 0 1 2 3 4 5 6 7
|
||||
// ^-----^
|
||||
// ObjIdentifierRaw
|
||||
objIdentifierRaw = (objHeader & 0xf0) >> 4
|
||||
} else {
|
||||
// ObjHeader
|
||||
// 0 1 2 3 4 5 6 7
|
||||
// ^-----^
|
||||
// ObjIdentifierRaw
|
||||
objIdentifierRaw = (objHeader & 0x0f)
|
||||
}
|
||||
bitsToBeIncremented += 4
|
||||
|
||||
marker, err = incrementMarker(&bitsToBeIncremented, &byteIncrementCnt, framingElen, curObjIdx)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
// Value is 0-14
|
||||
objId = int(objIdentifierRaw & 0xe)
|
||||
// If bit 15 is set, ID is 15 + value of next byte
|
||||
if objIdentifierRaw&0x1 > 0 {
|
||||
if bitsToBeIncremented > 0 {
|
||||
// ObjHeader
|
||||
// 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
|
||||
// ^-----^ ^---------------^
|
||||
// ObjId1 Extension
|
||||
// ^ marker
|
||||
buffer := uint16(buf[marker])
|
||||
buffer = buffer << 8
|
||||
buffer |= uint16(buf[marker+1])
|
||||
var extension uint8 = uint8(buffer & 0xff0 >> 4)
|
||||
objId += int(extension)
|
||||
} else {
|
||||
// ObjHeader
|
||||
// 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
|
||||
// ^-----^ ^-------------------^
|
||||
// ObjId1 extension
|
||||
// ^ marker
|
||||
var extension uint8 = uint8(buf[marker])
|
||||
objId += int(extension)
|
||||
}
|
||||
bitsToBeIncremented += 8
|
||||
}
|
||||
|
||||
marker, err = incrementMarker(&bitsToBeIncremented, &byteIncrementCnt, framingElen, curObjIdx)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
oneFrameObj.ObjId = FrameObjType(objId)
|
||||
|
||||
// Then get the obj length
|
||||
// -------------------------
|
||||
var objLenRaw uint8
|
||||
var objLen int
|
||||
if bitsToBeIncremented > 0 {
|
||||
// ObjHeader
|
||||
// 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
|
||||
// ^ ^---------^
|
||||
// marker objLen
|
||||
objLenRaw = uint8(buf[marker]) & 0x0f
|
||||
} else {
|
||||
// ObjHeader
|
||||
// 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
|
||||
// ^--------^
|
||||
// objLen
|
||||
// ^ marker
|
||||
objLenRaw = uint8(buf[marker]) & 0xf0 >> 4
|
||||
}
|
||||
bitsToBeIncremented += 4
|
||||
|
||||
marker, err = incrementMarker(&bitsToBeIncremented, &byteIncrementCnt, framingElen, curObjIdx)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
// Length is 0-14
|
||||
objLen = int(objLenRaw & 0xe)
|
||||
// If bit 15 is set, lenghth is 15 + value of next byte
|
||||
if objLenRaw&0x1 > 0 {
|
||||
if bitsToBeIncremented == 0 {
|
||||
// ObjHeader
|
||||
// 12 13 14 15 16 17 18 19 20 21 22 23
|
||||
// ^---------^ ^--------------------^
|
||||
// objLen extension
|
||||
// ^ marker
|
||||
var extension uint8 = uint8(buf[marker])
|
||||
objLen += int(extension)
|
||||
} else {
|
||||
// ObjHeader
|
||||
// 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
|
||||
// ^--------^ ^---------------------^
|
||||
// objLen extension
|
||||
// ^ marker var buffer uint16
|
||||
buffer := uint16(buf[marker])
|
||||
buffer = buffer << 8
|
||||
buffer |= uint16(buf[marker+1])
|
||||
var extension uint8 = uint8(buffer & 0xff0 >> 4)
|
||||
objLen += int(extension)
|
||||
}
|
||||
bitsToBeIncremented += 8
|
||||
}
|
||||
|
||||
marker, err = incrementMarker(&bitsToBeIncremented, &byteIncrementCnt, framingElen, curObjIdx)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
oneFrameObj.ObjLen = objLen
|
||||
|
||||
// The rest is N-bytes of data based on the length
|
||||
if bitsToBeIncremented == 0 {
|
||||
// No weird alignment needed
|
||||
oneFrameObj.ObjData = buf[marker : marker+objLen]
|
||||
} else {
|
||||
// 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
|
||||
// ^--------^ ^---------------------^ ^--------->
|
||||
// objLen extension data
|
||||
// ^ marker
|
||||
oneFrameObj.ObjData = ShiftByteSliceLeft4Bits(buf[marker : marker+objLen+1])
|
||||
}
|
||||
err = oneFrameObj.Validate()
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
objs = append(objs, oneFrameObj)
|
||||
|
||||
bitsToBeIncremented += 8 * objLen
|
||||
marker, err = incrementMarker(&bitsToBeIncremented, &byteIncrementCnt, framingElen, curObjIdx)
|
||||
}
|
||||
|
||||
if bitsToBeIncremented > 0 {
|
||||
halfByteRemaining = true
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func ShiftByteSliceLeft4Bits(slice []byte) (replacement []byte) {
|
||||
var buffer uint16
|
||||
var i int
|
||||
sliceLen := len(slice)
|
||||
|
||||
if sliceLen < 2 {
|
||||
// Let's not shift less than 16 bits
|
||||
return
|
||||
}
|
||||
|
||||
replacement = make([]byte, sliceLen, cap(slice))
|
||||
|
||||
for i = 0; i < sliceLen-1; i++ {
|
||||
// 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
|
||||
// ^-----^ ^---------------^ ^-----------
|
||||
// garbage data byte 0 data byte 1
|
||||
buffer = uint16(slice[i])
|
||||
buffer = buffer << 8
|
||||
buffer |= uint16(slice[i+1])
|
||||
replacement[i] = uint8(buffer & 0xff0 >> 4)
|
||||
}
|
||||
|
||||
if i < sliceLen {
|
||||
lastByte := slice[sliceLen-1]
|
||||
lastByte = lastByte << 4
|
||||
replacement[i] = lastByte
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// The following is used to theoretically support frameInfo ObjID extensions
|
||||
// for completeness, but they are not very efficient though
|
||||
func ShiftByteSliceRight4Bits(slice []byte) (replacement []byte) {
|
||||
var buffer uint16
|
||||
var i int
|
||||
var leftovers uint8 // 4 bits only
|
||||
var replacementUnit uint16
|
||||
var first bool = true
|
||||
var firstLeftovers uint8
|
||||
var lastLeftovers uint8
|
||||
sliceLen := len(slice)
|
||||
|
||||
if sliceLen < 2 {
|
||||
// Let's not shift less than 16 bits
|
||||
return
|
||||
}
|
||||
|
||||
if slice[sliceLen-1]&0xf == 0 {
|
||||
replacement = make([]byte, sliceLen, cap(slice))
|
||||
} else {
|
||||
replacement = make([]byte, sliceLen+1, cap(slice)+1)
|
||||
}
|
||||
|
||||
for i = 0; i < sliceLen-1; i++ {
|
||||
buffer = binary.BigEndian.Uint16(slice[i : i+2])
|
||||
// (buffer)
|
||||
// 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
|
||||
// ^-------------^ ^-------------------^
|
||||
// data byte 0 data byte 1
|
||||
//
|
||||
// into
|
||||
//
|
||||
// 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
|
||||
// ^-----^ ^---------------^ ^--------------------^ ^----------^
|
||||
// zeroes data byte 0 data byte 1 zeroes
|
||||
|
||||
if first {
|
||||
// The leftover OR'ing will overwrite the first 4 bits of data byte 0. Save them
|
||||
firstLeftovers = uint8(buffer & 0xf000 >> 12)
|
||||
first = false
|
||||
}
|
||||
replacementUnit = 0
|
||||
replacementUnit |= uint16(leftovers) << 12
|
||||
replacementUnit |= (buffer & 0xff00) >> 4 // data byte 0
|
||||
replacementUnit |= buffer & 0xff >> 4 // data byte 1 first 4 bits
|
||||
lastLeftovers = uint8(buffer&0xf) << 4
|
||||
|
||||
replacement[i+1] = byte(replacementUnit)
|
||||
|
||||
leftovers = uint8((buffer & 0x000f) << 4)
|
||||
}
|
||||
|
||||
replacement[0] = byte(uint8(replacement[0]) | firstLeftovers)
|
||||
if lastLeftovers > 0 {
|
||||
replacement[sliceLen] = byte(lastLeftovers)
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func Merge2HalfByteSlices(src1, src2 []byte) (output []byte) {
|
||||
src1Len := len(src1)
|
||||
src2Len := len(src2)
|
||||
output = make([]byte, src1Len+src2Len-1)
|
||||
|
||||
var mergeByte uint8 = src1[src1Len-1]
|
||||
mergeByte |= uint8(src2[0])
|
||||
|
||||
copy(output, src1)
|
||||
copy(output[src1Len:], src2[1:])
|
||||
|
||||
output[src1Len-1] = byte(mergeByte)
|
||||
|
||||
return
|
||||
}
|
@ -1,47 +1,202 @@
|
||||
COUCHBASE INC. COMMUNITY EDITION LICENSE AGREEMENT
|
||||
|
||||
IMPORTANT-READ CAREFULLY: BY CLICKING THE "I ACCEPT" BOX OR INSTALLING,
|
||||
DOWNLOADING OR OTHERWISE USING THIS SOFTWARE AND ANY ASSOCIATED
|
||||
DOCUMENTATION, YOU, ON BEHALF OF YOURSELF OR AS AN AUTHORIZED
|
||||
REPRESENTATIVE ON BEHALF OF AN ENTITY ("LICENSEE") AGREE TO ALL THE
|
||||
TERMS OF THIS COMMUNITY EDITION LICENSE AGREEMENT (THE "AGREEMENT")
|
||||
REGARDING YOUR USE OF THE SOFTWARE. YOU REPRESENT AND WARRANT THAT YOU
|
||||
HAVE FULL LEGAL AUTHORITY TO BIND THE LICENSEE TO THIS AGREEMENT. IF YOU
|
||||
DO NOT AGREE WITH ALL OF THESE TERMS, DO NOT SELECT THE "I ACCEPT" BOX
|
||||
AND DO NOT INSTALL, DOWNLOAD OR OTHERWISE USE THE SOFTWARE. THE
|
||||
EFFECTIVE DATE OF THIS AGREEMENT IS THE DATE ON WHICH YOU CLICK "I
|
||||
ACCEPT" OR OTHERWISE INSTALL, DOWNLOAD OR USE THE SOFTWARE.
|
||||
|
||||
1. License Grant. Couchbase Inc. hereby grants Licensee, free of charge,
|
||||
the non-exclusive right to use, copy, merge, publish, distribute,
|
||||
sublicense, and/or sell copies of the Software, and to permit persons to
|
||||
whom the Software is furnished to do so, subject to Licensee including
|
||||
the following copyright notice in all copies or substantial portions of
|
||||
the Software:
|
||||
|
||||
Couchbase (r) http://www.Couchbase.com Copyright 2016 Couchbase, Inc.
|
||||
|
||||
As used in this Agreement, "Software" means the object code version of
|
||||
the applicable elastic data management server software provided by
|
||||
Couchbase Inc.
|
||||
|
||||
2. Restrictions. Licensee will not reverse engineer, disassemble, or
|
||||
decompile the Software (except to the extent such restrictions are
|
||||
prohibited by law).
|
||||
|
||||
3. Support. Couchbase, Inc. will provide Licensee with access to, and
|
||||
use of, the Couchbase, Inc. support forum available at the following
|
||||
URL: http://www.couchbase.org/forums/. Couchbase, Inc. may, at its
|
||||
discretion, modify, suspend or terminate support at any time upon notice
|
||||
to Licensee.
|
||||
|
||||
4. Warranty Disclaimer and Limitation of Liability. THE SOFTWARE IS
|
||||
PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
|
||||
INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
|
||||
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
||||
COUCHBASE INC. OR THE AUTHORS OR COPYRIGHT HOLDERS IN THE SOFTWARE BE
|
||||
LIABLE FOR ANY CLAIM, DAMAGES (IINCLUDING, WITHOUT LIMITATION, DIRECT,
|
||||
INDIRECT OR CONSEQUENTIAL DAMAGES) OR OTHER LIABILITY, WHETHER IN AN
|
||||
ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
SOFTWARE.
|
||||
Apache License
|
||||
Version 2.0, January 2004
|
||||
http://www.apache.org/licenses/
|
||||
|
||||
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
|
||||
|
||||
1. Definitions.
|
||||
|
||||
"License" shall mean the terms and conditions for use, reproduction,
|
||||
and distribution as defined by Sections 1 through 9 of this document.
|
||||
|
||||
"Licensor" shall mean the copyright owner or entity authorized by
|
||||
the copyright owner that is granting the License.
|
||||
|
||||
"Legal Entity" shall mean the union of the acting entity and all
|
||||
other entities that control, are controlled by, or are under common
|
||||
control with that entity. For the purposes of this definition,
|
||||
"control" means (i) the power, direct or indirect, to cause the
|
||||
direction or management of such entity, whether by contract or
|
||||
otherwise, or (ii) ownership of fifty percent (50%) or more of the
|
||||
outstanding shares, or (iii) beneficial ownership of such entity.
|
||||
|
||||
"You" (or "Your") shall mean an individual or Legal Entity
|
||||
exercising permissions granted by this License.
|
||||
|
||||
"Source" form shall mean the preferred form for making modifications,
|
||||
including but not limited to software source code, documentation
|
||||
source, and configuration files.
|
||||
|
||||
"Object" form shall mean any form resulting from mechanical
|
||||
transformation or translation of a Source form, including but
|
||||
not limited to compiled object code, generated documentation,
|
||||
and conversions to other media types.
|
||||
|
||||
"Work" shall mean the work of authorship, whether in Source or
|
||||
Object form, made available under the License, as indicated by a
|
||||
copyright notice that is included in or attached to the work
|
||||
(an example is provided in the Appendix below).
|
||||
|
||||
"Derivative Works" shall mean any work, whether in Source or Object
|
||||
form, that is based on (or derived from) the Work and for which the
|
||||
editorial revisions, annotations, elaborations, or other modifications
|
||||
represent, as a whole, an original work of authorship. For the purposes
|
||||
of this License, Derivative Works shall not include works that remain
|
||||
separable from, or merely link (or bind by name) to the interfaces of,
|
||||
the Work and Derivative Works thereof.
|
||||
|
||||
"Contribution" shall mean any work of authorship, including
|
||||
the original version of the Work and any modifications or additions
|
||||
to that Work or Derivative Works thereof, that is intentionally
|
||||
submitted to Licensor for inclusion in the Work by the copyright owner
|
||||
or by an individual or Legal Entity authorized to submit on behalf of
|
||||
the copyright owner. For the purposes of this definition, "submitted"
|
||||
means any form of electronic, verbal, or written communication sent
|
||||
to the Licensor or its representatives, including but not limited to
|
||||
communication on electronic mailing lists, source code control systems,
|
||||
and issue tracking systems that are managed by, or on behalf of, the
|
||||
Licensor for the purpose of discussing and improving the Work, but
|
||||
excluding communication that is conspicuously marked or otherwise
|
||||
designated in writing by the copyright owner as "Not a Contribution."
|
||||
|
||||
"Contributor" shall mean Licensor and any individual or Legal Entity
|
||||
on behalf of whom a Contribution has been received by Licensor and
|
||||
subsequently incorporated within the Work.
|
||||
|
||||
2. Grant of Copyright License. Subject to the terms and conditions of
|
||||
this License, each Contributor hereby grants to You a perpetual,
|
||||
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
|
||||
copyright license to reproduce, prepare Derivative Works of,
|
||||
publicly display, publicly perform, sublicense, and distribute the
|
||||
Work and such Derivative Works in Source or Object form.
|
||||
|
||||
3. Grant of Patent License. Subject to the terms and conditions of
|
||||
this License, each Contributor hereby grants to You a perpetual,
|
||||
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
|
||||
(except as stated in this section) patent license to make, have made,
|
||||
use, offer to sell, sell, import, and otherwise transfer the Work,
|
||||
where such license applies only to those patent claims licensable
|
||||
by such Contributor that are necessarily infringed by their
|
||||
Contribution(s) alone or by combination of their Contribution(s)
|
||||
with the Work to which such Contribution(s) was submitted. If You
|
||||
institute patent litigation against any entity (including a
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|
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or a Contribution incorporated within the Work constitutes direct
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or contributory patent infringement, then any patent licenses
|
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granted to You under this License for that Work shall terminate
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||||
as of the date such litigation is filed.
|
||||
|
||||
4. Redistribution. You may reproduce and distribute copies of the
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meet the following conditions:
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||||
|
||||
(a) You must give any other recipients of the Work or
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||||
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||||
|
||||
(b) You must cause any modified files to carry prominent notices
|
||||
stating that You changed the files; and
|
||||
|
||||
(c) You must retain, in the Source form of any Derivative Works
|
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that You distribute, all copyright, patent, trademark, and
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|
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excluding those notices that do not pertain to any part of
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|
||||
(d) If the Work includes a "NOTICE" text file as part of its
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||||
distribution, then any Derivative Works that You distribute must
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include a readable copy of the attribution notices contained
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||||
within such NOTICE file, excluding those notices that do not
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pertain to any part of the Derivative Works, in at least one
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within a display generated by the Derivative Works, if and
|
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|
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do not modify the License. You may add Your own attribution
|
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notices within Derivative Works that You distribute, alongside
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or as an addendum to the NOTICE text from the Work, provided
|
||||
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|
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as modifying the License.
|
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|
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You may add Your own copyright statement to Your modifications and
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for use, reproduction, or distribution of Your modifications, or
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||||
for any such Derivative Works as a whole, provided Your use,
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||||
reproduction, and distribution of the Work otherwise complies with
|
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the conditions stated in this License.
|
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|
||||
5. Submission of Contributions. Unless You explicitly state otherwise,
|
||||
any Contribution intentionally submitted for inclusion in the Work
|
||||
by You to the Licensor shall be under the terms and conditions of
|
||||
this License, without any additional terms or conditions.
|
||||
Notwithstanding the above, nothing herein shall supersede or modify
|
||||
the terms of any separate license agreement you may have executed
|
||||
with Licensor regarding such Contributions.
|
||||
|
||||
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|
||||
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|
||||
except as required for reasonable and customary use in describing the
|
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|
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|
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|
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whether in tort (including negligence), contract, or otherwise,
|
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unless required by applicable law (such as deliberate and grossly
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|
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work stoppage, computer failure or malfunction, or any and all
|
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other commercial damages or losses), even if such Contributor
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|
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|
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defend, and hold each Contributor harmless for any liability
|
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incurred by, or claims asserted against, such Contributor by reason
|
||||
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|
||||
|
||||
END OF TERMS AND CONDITIONS
|
||||
|
||||
APPENDIX: How to apply the Apache License to your work.
|
||||
|
||||
To apply the Apache License to your work, attach the following
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||||
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|
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||||
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||||
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|
||||
|
||||
Copyright {yyyy} {name of copyright owner}
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
|
||||
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