foster/forgejo
1
0
Fork 0
mirror of https://codeberg.org/forgejo/forgejo.git synced 2024-12-25 13:19:37 -05:00
Code Issues Wiki Activity

chore: update github.com/couchbase/gomemcached and github.com/couchbase/go-couchbase (#9419)

Browse source
This commit is contained in:
Antoine GIRARD 2019-12-19 03:03:26 +01:00 committed by techknowlogick
parent 8873a80276
commit 559fb6ccf0
12 changed files with 1555 additions and 200 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
go.mod
View file

@ -24,6 +24,8 @@ require (
github.com/blevesearch/go-porterstemmer v1.0.2 // indirect
github.com/blevesearch/segment v0.0.0-20160915185041-762005e7a34f // indirect
github.com/boombuler/barcode v0.0.0-20161226211916-fe0f26ff6d26 // indirect
github.com/couchbase/gomemcached v0.0.0-20191004160342-7b5da2ec40b2 // indirect
github.com/couchbase/goutils v0.0.0-20191018232750-b49639060d85 // indirect
github.com/couchbase/vellum v0.0.0-20190829182332-ef2e028c01fd // indirect
github.com/cznic/b v0.0.0-20181122101859-a26611c4d92d // indirect
github.com/cznic/mathutil v0.0.0-20181122101859-297441e03548 // indirect

4
go.sum
View file

@ -97,8 +97,12 @@ github.com/coreos/go-systemd v0.0.0-20190321100706-95778dfbb74e/go.mod h1:F5haX7
github.com/coreos/pkg v0.0.0-20180928190104-399ea9e2e55f/go.mod h1:E3G3o1h8I7cfcXa63jLwjI0eiQQMgzzUDFVpN/nH/eA=
github.com/couchbase/gomemcached v0.0.0-20190515232915-c4b4ca0eb21d h1:XMf4E1U+b9E3ElF0mjvfXZdflBRZz4gLp16nQ/QSHQM=
github.com/couchbase/gomemcached v0.0.0-20190515232915-c4b4ca0eb21d/go.mod h1:srVSlQLB8iXBVXHgnqemxUXqN6FCvClgCMPCsjBDR7c=
github.com/couchbase/gomemcached v0.0.0-20191004160342-7b5da2ec40b2 h1:vZryARwW4PSFXd9arwegEywvMTvPuXL3/oa+4L5NTe8=
github.com/couchbase/gomemcached v0.0.0-20191004160342-7b5da2ec40b2/go.mod h1:srVSlQLB8iXBVXHgnqemxUXqN6FCvClgCMPCsjBDR7c=
github.com/couchbase/goutils v0.0.0-20190315194238-f9d42b11473b h1:bZ9rKU2/V8sY+NulSfxDOnXTWcs1rySqdF1sVepihvo=
github.com/couchbase/goutils v0.0.0-20190315194238-f9d42b11473b/go.mod h1:BQwMFlJzDjFDG3DJUdU0KORxn88UlsOULuxLExMh3Hs=
github.com/couchbase/goutils v0.0.0-20191018232750-b49639060d85 h1:0WMIDtuXCKEm4wtAJgAAXa/qtM5O9MariLwgHaRlYmk=
github.com/couchbase/goutils v0.0.0-20191018232750-b49639060d85/go.mod h1:BQwMFlJzDjFDG3DJUdU0KORxn88UlsOULuxLExMh3Hs=
github.com/couchbase/vellum v0.0.0-20190829182332-ef2e028c01fd h1:zeuJhcG3f8eePshH3KxkNE+Xtl53pVln9MOUPMyr/1w=
github.com/couchbase/vellum v0.0.0-20190829182332-ef2e028c01fd/go.mod h1:xbc8Ff/oG7h2ejd7AlwOpfd+6QZntc92ygpAOfGwcKY=
github.com/couchbaselabs/go-couchbase v0.0.0-20190708161019-23e7ca2ce2b7 h1:1XjEY/gnjQ+AfXef2U6dxCquhiRzkEpxZuWqs+QxTL8=

123
vendor/github.com/couchbase/gomemcached/client/collections_filter.go generated vendored Normal file
View file

@ -0,0 +1,123 @@
package memcached
import (
"encoding/json"
"fmt"
)
// Collection based filter
type CollectionsFilter struct {
ManifestUid uint64
UseManifestUid bool
StreamId uint16
UseStreamId bool
// Use either ScopeId OR CollectionsList, not both
CollectionsList []uint32
ScopeId uint32
}
type nonStreamIdNonResumeScopeMeta struct {
ScopeId string `json:"scope"`
}
type nonStreamIdResumeScopeMeta struct {
ManifestId string `json:"uid"`
}
type nonStreamIdNonResumeCollectionsMeta struct {
CollectionsList []string `json:"collections"`
}
type nonStreamIdResumeCollectionsMeta struct {
ManifestId string `json:"uid"`
CollectionsList []string `json:"collections"`
}
type streamIdNonResumeCollectionsMeta struct {
CollectionsList []string `json:"collections"`
StreamId uint16 `json:"sid"`
}
type streamIdNonResumeScopeMeta struct {
ScopeId string `json:"scope"`
StreamId uint16 `json:"sid"`
}
func (c *CollectionsFilter) IsValid() error {
if c.UseManifestUid {
return fmt.Errorf("Not implemented yet")
}
if len(c.CollectionsList) > 0 && c.ScopeId > 0 {
return fmt.Errorf("Collection list is specified but scope ID is also specified")
}
return nil
}
func (c *CollectionsFilter) outputCollectionsFilterColList() (outputList []string) {
for _, collectionUint := range c.CollectionsList {
outputList = append(outputList, fmt.Sprintf("%x", collectionUint))
}
return
}
func (c *CollectionsFilter) outputScopeId() string {
return fmt.Sprintf("%x", c.ScopeId)
}
func (c *CollectionsFilter) ToStreamReqBody() ([]byte, error) {
if err := c.IsValid(); err != nil {
return nil, err
}
var output interface{}
switch c.UseStreamId {
case true:
switch c.UseManifestUid {
case true:
// TODO
return nil, fmt.Errorf("NotImplemented0")
case false:
switch len(c.CollectionsList) > 0 {
case true:
filter := &streamIdNonResumeCollectionsMeta{
StreamId: c.StreamId,
CollectionsList: c.outputCollectionsFilterColList(),
}
output = *filter
case false:
filter := &streamIdNonResumeScopeMeta{
StreamId: c.StreamId,
ScopeId: c.outputScopeId(),
}
output = *filter
}
}
case false:
switch c.UseManifestUid {
case true:
// TODO
return nil, fmt.Errorf("NotImplemented1")
case false:
switch len(c.CollectionsList) > 0 {
case true:
filter := &nonStreamIdNonResumeCollectionsMeta{
CollectionsList: c.outputCollectionsFilterColList(),
}
output = *filter
case false:
output = nonStreamIdNonResumeScopeMeta{ScopeId: c.outputScopeId()}
}
}
}
data, err := json.Marshal(output)
if err != nil {
return nil, err
} else {
return data, nil
}
}

30
vendor/github.com/couchbase/gomemcached/client/mc.go generated vendored
View file

@ -28,10 +28,12 @@ type ClientIface interface {
CASNext(vb uint16, k string, exp int, state *CASState) bool
CAS(vb uint16, k string, f CasFunc, initexp int) (*gomemcached.MCResponse, error)
CollectionsGetCID(scope string, collection string) (*gomemcached.MCResponse, error)
CollectionEnabled() bool
Close() error
Decr(vb uint16, key string, amt, def uint64, exp int) (uint64, error)
Del(vb uint16, key string) (*gomemcached.MCResponse, error)
EnableMutationToken() (*gomemcached.MCResponse, error)
EnableFeatures(features Features) (*gomemcached.MCResponse, error)
Get(vb uint16, key string) (*gomemcached.MCResponse, error)
GetCollectionsManifest() (*gomemcached.MCResponse, error)
GetFromCollection(vb uint16, cid uint32, key string) (*gomemcached.MCResponse, error)
@ -76,9 +78,12 @@ var Healthy uint32 = 1
type Features []Feature
type Feature uint16
const FeatureMutationToken = Feature(0x04)
const FeatureTcpNoDelay = Feature(0x03)
const FeatureMutationToken = Feature(0x04) // XATTR bit in data type field with dcp mutations
const FeatureXattr = Feature(0x06)
const FeatureXerror = Feature(0x07)
const FeatureCollections = Feature(0x12)
const FeatureSnappyCompression = Feature(0x0a)
const FeatureDataType = Feature(0x0b)
type memcachedConnection interface {
@ -96,6 +101,9 @@ type Client struct {
opaque uint32
hdrBuf []byte
featureMtx sync.RWMutex
sentHeloFeatures Features
}
var (
@ -285,6 +293,10 @@ func (c *Client) EnableFeatures(features Features) (*gomemcached.MCResponse, err
binary.BigEndian.PutUint16(payload[len(payload)-2:], uint16(feature))
}
c.featureMtx.Lock()
c.sentHeloFeatures = features
c.featureMtx.Unlock()
return c.Send(&gomemcached.MCRequest{
Opcode: gomemcached.HELLO,
Key: []byte("GoMemcached"),
@ -363,6 +375,18 @@ func (c *Client) CollectionsGetCID(scope string, collection string) (*gomemcache
return res, nil
}
func (c *Client) CollectionEnabled() bool {
c.featureMtx.RLock()
defer c.featureMtx.RUnlock()
for _, feature := range c.sentHeloFeatures {
if feature == FeatureCollections {
return true
}
}
return false
}
// Get the value for a key, and update expiry
func (c *Client) GetAndTouch(vb uint16, key string, exp int) (*gomemcached.MCResponse, error) {
extraBuf := make([]byte, 4)
@ -1138,3 +1162,7 @@ func IfResStatusError(response *gomemcached.MCResponse) bool {
response.Status != gomemcached.SUBDOC_PATH_NOT_FOUND &&
response.Status != gomemcached.SUBDOC_MULTI_PATH_FAILURE_DELETED)
}
func (c *Client) Conn() io.ReadWriteCloser {
return c.conn
}

346
vendor/github.com/couchbase/gomemcached/client/upr_event.go generated vendored Normal file
View file

@ -0,0 +1,346 @@
package memcached
import (
"encoding/binary"
"fmt"
"github.com/couchbase/gomemcached"
"math"
)
type SystemEventType int
const InvalidSysEvent SystemEventType = -1
const (
CollectionCreate SystemEventType = 0
CollectionDrop SystemEventType = iota
CollectionFlush SystemEventType = iota // KV did not implement
ScopeCreate SystemEventType = iota
ScopeDrop SystemEventType = iota
CollectionChanged SystemEventType = iota
)
type ScopeCreateEvent interface {
GetSystemEventName() (string, error)
GetScopeId() (uint32, error)
GetManifestId() (uint64, error)
}
type CollectionCreateEvent interface {
GetSystemEventName() (string, error)
GetScopeId() (uint32, error)
GetCollectionId() (uint32, error)
GetManifestId() (uint64, error)
GetMaxTTL() (uint32, error)
}
type CollectionDropEvent interface {
GetScopeId() (uint32, error)
GetCollectionId() (uint32, error)
GetManifestId() (uint64, error)
}
type ScopeDropEvent interface {
GetScopeId() (uint32, error)
GetManifestId() (uint64, error)
}
type CollectionChangedEvent interface {
GetCollectionId() (uint32, error)
GetManifestId() (uint64, error)
GetMaxTTL() (uint32, error)
}
var ErrorInvalidOp error = fmt.Errorf("Invalid Operation")
var ErrorInvalidVersion error = fmt.Errorf("Invalid version for parsing")
var ErrorValueTooShort error = fmt.Errorf("Value length is too short")
var ErrorNoMaxTTL error = fmt.Errorf("This event has no max TTL")
// UprEvent memcached events for UPR streams.
type UprEvent struct {
Opcode gomemcached.CommandCode // Type of event
Status gomemcached.Status // Response status
VBucket uint16 // VBucket this event applies to
DataType uint8 // data type
Opaque uint16 // 16 MSB of opaque
VBuuid uint64 // This field is set by downstream
Flags uint32 // Item flags
Expiry uint32 // Item expiration time
Key, Value []byte // Item key/value
OldValue []byte // TODO: TBD: old document value
Cas uint64 // CAS value of the item
Seqno uint64 // sequence number of the mutation
RevSeqno uint64 // rev sequence number : deletions
LockTime uint32 // Lock time
MetadataSize uint16 // Metadata size
SnapstartSeq uint64 // start sequence number of this snapshot
SnapendSeq uint64 // End sequence number of the snapshot
SnapshotType uint32 // 0: disk 1: memory
FailoverLog *FailoverLog // Failover log containing vvuid and sequnce number
Error error // Error value in case of a failure
ExtMeta []byte // Extended Metadata
AckSize uint32 // The number of bytes that can be Acked to DCP
SystemEvent SystemEventType // Only valid if IsSystemEvent() is true
SysEventVersion uint8 // Based on the version, the way Extra bytes is parsed is different
ValueLen int // Cache it to avoid len() calls for performance
CollectionId uint64 // Valid if Collection is in use
}
// FailoverLog containing vvuid and sequnce number
type FailoverLog [][2]uint64
func makeUprEvent(rq gomemcached.MCRequest, stream *UprStream, bytesReceivedFromDCP int) *UprEvent {
event := &UprEvent{
Opcode: rq.Opcode,
VBucket: stream.Vbucket,
VBuuid: stream.Vbuuid,
Value: rq.Body,
Cas: rq.Cas,
ExtMeta: rq.ExtMeta,
DataType: rq.DataType,
ValueLen: len(rq.Body),
SystemEvent: InvalidSysEvent,
CollectionId: math.MaxUint64,
}
event.PopulateFieldsBasedOnStreamType(rq, stream.StreamType)
// set AckSize for events that need to be acked to DCP,
// i.e., events with CommandCodes that need to be buffered in DCP
if _, ok := gomemcached.BufferedCommandCodeMap[rq.Opcode]; ok {
event.AckSize = uint32(bytesReceivedFromDCP)
}
// 16 LSBits are used by client library to encode vbucket number.
// 16 MSBits are left for application to multiplex on opaque value.
event.Opaque = appOpaque(rq.Opaque)
if len(rq.Extras) >= uprMutationExtraLen &&
event.Opcode == gomemcached.UPR_MUTATION {
event.Seqno = binary.BigEndian.Uint64(rq.Extras[:8])
event.RevSeqno = binary.BigEndian.Uint64(rq.Extras[8:16])
event.Flags = binary.BigEndian.Uint32(rq.Extras[16:20])
event.Expiry = binary.BigEndian.Uint32(rq.Extras[20:24])
event.LockTime = binary.BigEndian.Uint32(rq.Extras[24:28])
event.MetadataSize = binary.BigEndian.Uint16(rq.Extras[28:30])
} else if len(rq.Extras) >= uprDeletetionWithDeletionTimeExtraLen &&
event.Opcode == gomemcached.UPR_DELETION {
event.Seqno = binary.BigEndian.Uint64(rq.Extras[:8])
event.RevSeqno = binary.BigEndian.Uint64(rq.Extras[8:16])
event.Expiry = binary.BigEndian.Uint32(rq.Extras[16:20])
} else if len(rq.Extras) >= uprDeletetionExtraLen &&
event.Opcode == gomemcached.UPR_DELETION ||
event.Opcode == gomemcached.UPR_EXPIRATION {
event.Seqno = binary.BigEndian.Uint64(rq.Extras[:8])
event.RevSeqno = binary.BigEndian.Uint64(rq.Extras[8:16])
event.MetadataSize = binary.BigEndian.Uint16(rq.Extras[16:18])
} else if len(rq.Extras) >= uprSnapshotExtraLen &&
event.Opcode == gomemcached.UPR_SNAPSHOT {
event.SnapstartSeq = binary.BigEndian.Uint64(rq.Extras[:8])
event.SnapendSeq = binary.BigEndian.Uint64(rq.Extras[8:16])
event.SnapshotType = binary.BigEndian.Uint32(rq.Extras[16:20])
} else if event.IsSystemEvent() {
event.PopulateEvent(rq.Extras)
}
return event
}
func (event *UprEvent) PopulateFieldsBasedOnStreamType(rq gomemcached.MCRequest, streamType DcpStreamType) {
switch streamType {
case CollectionsNonStreamId:
switch rq.Opcode {
// Only these will have CID encoded within the key
case gomemcached.UPR_MUTATION,
gomemcached.UPR_DELETION,
gomemcached.UPR_EXPIRATION:
uleb128 := Uleb128(rq.Key)
result, bytesShifted := uleb128.ToUint64(rq.Keylen)
event.CollectionId = result
event.Key = rq.Key[bytesShifted:]
default:
event.Key = rq.Key
}
case CollectionsStreamId:
// TODO - not implemented
fallthrough
case NonCollectionStream:
// Let default behavior be legacy stream type
fallthrough
default:
event.Key = rq.Key
}
}
func (event *UprEvent) String() string {
name := gomemcached.CommandNames[event.Opcode]
if name == "" {
name = fmt.Sprintf("#%d", event.Opcode)
}
return name
}
func (event *UprEvent) IsSnappyDataType() bool {
return event.Opcode == gomemcached.UPR_MUTATION && (event.DataType&SnappyDataType > 0)
}
func (event *UprEvent) IsCollectionType() bool {
return event.IsSystemEvent() || event.CollectionId <= math.MaxUint32
}
func (event *UprEvent) IsSystemEvent() bool {
return event.Opcode == gomemcached.DCP_SYSTEM_EVENT
}
func (event *UprEvent) PopulateEvent(extras []byte) {
if len(extras) < dcpSystemEventExtraLen {
// Wrong length, don't parse
return
}
event.Seqno = binary.BigEndian.Uint64(extras[:8])
event.SystemEvent = SystemEventType(binary.BigEndian.Uint32(extras[8:12]))
var versionTemp uint16 = binary.BigEndian.Uint16(extras[12:14])
event.SysEventVersion = uint8(versionTemp >> 8)
}
func (event *UprEvent) GetSystemEventName() (string, error) {
switch event.SystemEvent {
case CollectionCreate:
fallthrough
case ScopeCreate:
return string(event.Key), nil
default:
return "", ErrorInvalidOp
}
}
func (event *UprEvent) GetManifestId() (uint64, error) {
switch event.SystemEvent {
// Version 0 only checks
case CollectionChanged:
fallthrough
case ScopeDrop:
fallthrough
case ScopeCreate:
fallthrough
case CollectionDrop:
if event.SysEventVersion > 0 {
return 0, ErrorInvalidVersion
}
fallthrough
case CollectionCreate:
// CollectionCreate supports version 1
if event.SysEventVersion > 1 {
return 0, ErrorInvalidVersion
}
if event.ValueLen < 8 {
return 0, ErrorValueTooShort
}
return binary.BigEndian.Uint64(event.Value[0:8]), nil
default:
return 0, ErrorInvalidOp
}
}
func (event *UprEvent) GetCollectionId() (uint32, error) {
switch event.SystemEvent {
case CollectionDrop:
if event.SysEventVersion > 0 {
return 0, ErrorInvalidVersion
}
fallthrough
case CollectionCreate:
if event.SysEventVersion > 1 {
return 0, ErrorInvalidVersion
}
if event.ValueLen < 16 {
return 0, ErrorValueTooShort
}
return binary.BigEndian.Uint32(event.Value[12:16]), nil
case CollectionChanged:
if event.SysEventVersion > 0 {
return 0, ErrorInvalidVersion
}
if event.ValueLen < 12 {
return 0, ErrorValueTooShort
}
return binary.BigEndian.Uint32(event.Value[8:12]), nil
default:
return 0, ErrorInvalidOp
}
}
func (event *UprEvent) GetScopeId() (uint32, error) {
switch event.SystemEvent {
// version 0 checks
case ScopeCreate:
fallthrough
case ScopeDrop:
fallthrough
case CollectionDrop:
if event.SysEventVersion > 0 {
return 0, ErrorInvalidVersion
}
fallthrough
case CollectionCreate:
// CollectionCreate could be either 0 or 1
if event.SysEventVersion > 1 {
return 0, ErrorInvalidVersion
}
if event.ValueLen < 12 {
return 0, ErrorValueTooShort
}
return binary.BigEndian.Uint32(event.Value[8:12]), nil
default:
return 0, ErrorInvalidOp
}
}
func (event *UprEvent) GetMaxTTL() (uint32, error) {
switch event.SystemEvent {
case CollectionCreate:
if event.SysEventVersion < 1 {
return 0, ErrorNoMaxTTL
}
if event.ValueLen < 20 {
return 0, ErrorValueTooShort
}
return binary.BigEndian.Uint32(event.Value[16:20]), nil
case CollectionChanged:
if event.SysEventVersion > 0 {
return 0, ErrorInvalidVersion
}
if event.ValueLen < 16 {
return 0, ErrorValueTooShort
}
return binary.BigEndian.Uint32(event.Value[12:16]), nil
default:
return 0, ErrorInvalidOp
}
}
type Uleb128 []byte
func (u Uleb128) ToUint64(cachedLen int) (result uint64, bytesShifted int) {
var shift uint = 0
for curByte := 0; curByte < cachedLen; curByte++ {
oneByte := u[curByte]
last7Bits := 0x7f & oneByte
result |= uint64(last7Bits) << shift
bytesShifted++
if oneByte&0x80 == 0 {
break
}
shift += 7
}
return
}

248
vendor/github.com/couchbase/gomemcached/client/upr_feed.go generated vendored
View file

@ -19,6 +19,7 @@ const uprMutationExtraLen = 30
const uprDeletetionExtraLen = 18
const uprDeletetionWithDeletionTimeExtraLen = 21
const uprSnapshotExtraLen = 20
const dcpSystemEventExtraLen = 13
const bufferAckThreshold = 0.2
const opaqueOpen = 0xBEAF0001
const opaqueFailover = 0xDEADBEEF
@ -27,32 +28,6 @@ const uprDefaultNoopInterval = 120
// Counter on top of opaqueOpen that others can draw from for open and control msgs
var opaqueOpenCtrlWell uint32 = opaqueOpen
// UprEvent memcached events for UPR streams.
type UprEvent struct {
Opcode gomemcached.CommandCode // Type of event
Status gomemcached.Status // Response status
VBucket uint16 // VBucket this event applies to
DataType uint8 // data type
Opaque uint16 // 16 MSB of opaque
VBuuid uint64 // This field is set by downstream
Flags uint32 // Item flags
Expiry uint32 // Item expiration time
Key, Value []byte // Item key/value
OldValue []byte // TODO: TBD: old document value
Cas uint64 // CAS value of the item
Seqno uint64 // sequence number of the mutation
RevSeqno uint64 // rev sequence number : deletions
LockTime uint32 // Lock time
MetadataSize uint16 // Metadata size
SnapstartSeq uint64 // start sequence number of this snapshot
SnapendSeq uint64 // End sequence number of the snapshot
SnapshotType uint32 // 0: disk 1: memory
FailoverLog *FailoverLog // Failover log containing vvuid and sequnce number
Error error // Error value in case of a failure
ExtMeta []byte
AckSize uint32 // The number of bytes that can be Acked to DCP
}
type PriorityType string
// high > medium > disabled > low
@ -63,13 +38,39 @@ const (
PriorityHigh PriorityType = "high"
)
type DcpStreamType int32
var UninitializedStream DcpStreamType = -1
const (
NonCollectionStream DcpStreamType = 0
CollectionsNonStreamId DcpStreamType = iota
CollectionsStreamId DcpStreamType = iota
)
func (t DcpStreamType) String() string {
switch t {
case UninitializedStream:
return "Un-Initialized Stream"
case NonCollectionStream:
return "Traditional Non-Collection Stream"
case CollectionsNonStreamId:
return "Collections Stream without StreamID"
case CollectionsStreamId:
return "Collection Stream with StreamID"
default:
return "Unknown Stream Type"
}
}
// UprStream is per stream data structure over an UPR Connection.
type UprStream struct {
Vbucket uint16 // Vbucket id
Vbuuid uint64 // vbucket uuid
StartSeq uint64 // start sequence number
EndSeq uint64 // end sequence number
connected bool
Vbucket uint16 // Vbucket id
Vbuuid uint64 // vbucket uuid
StartSeq uint64 // start sequence number
EndSeq uint64 // end sequence number
connected bool
StreamType DcpStreamType
}
type FeedState int
@ -113,6 +114,7 @@ type UprFeatures struct {
IncludeDeletionTime bool
DcpPriority PriorityType
EnableExpiry bool
EnableStreamId bool
}
/**
@ -274,9 +276,15 @@ type UprFeed struct {
// if flag is true, upr feed will use ack from client to determine whether/when to send ack to DCP
// if flag is false, upr feed will track how many bytes it has sent to client
// and use that to determine whether/when to send ack to DCP
ackByClient bool
feedState FeedState
muFeedState sync.RWMutex
ackByClient bool
feedState FeedState
muFeedState sync.RWMutex
activatedFeatures UprFeatures
collectionEnabled bool // This is needed separately because parsing depends on this
// DCP StreamID allows multiple filtered collection streams to share a single DCP Stream
// It is not allowed once a regular/legacy stream was started originally
streamsType DcpStreamType
initStreamTypeOnce sync.Once
}
// Exported interface - to allow for mocking
@ -296,6 +304,9 @@ type UprFeedIface interface {
UprRequestStream(vbno, opaqueMSB uint16, flags uint32, vuuid, startSequence, endSequence, snapStart, snapEnd uint64) error
// Set DCP priority on an existing DCP connection. The command is sent asynchronously without waiting for a response
SetPriorityAsync(p PriorityType) error
// Various Collection-Type RequestStreams
UprRequestCollectionsStream(vbno, opaqueMSB uint16, flags uint32, vbuuid, startSeq, endSeq, snapStart, snapEnd uint64, filter *CollectionsFilter) error
}
type UprStats struct {
@ -305,9 +316,6 @@ type UprStats struct {
TotalSnapShot uint64
}
// FailoverLog containing vvuid and sequnce number
type FailoverLog [][2]uint64
// error codes
var ErrorInvalidLog = errors.New("couchbase.errorInvalidLog")
@ -320,76 +328,6 @@ func (flogp *FailoverLog) Latest() (vbuuid, seqno uint64, err error) {
return vbuuid, seqno, ErrorInvalidLog
}
func makeUprEvent(rq gomemcached.MCRequest, stream *UprStream, bytesReceivedFromDCP int) *UprEvent {
event := &UprEvent{
Opcode: rq.Opcode,
VBucket: stream.Vbucket,
VBuuid: stream.Vbuuid,
Key: rq.Key,
Value: rq.Body,
Cas: rq.Cas,
ExtMeta: rq.ExtMeta,
DataType: rq.DataType,
}
// set AckSize for events that need to be acked to DCP,
// i.e., events with CommandCodes that need to be buffered in DCP
if _, ok := gomemcached.BufferedCommandCodeMap[rq.Opcode]; ok {
event.AckSize = uint32(bytesReceivedFromDCP)
}
// 16 LSBits are used by client library to encode vbucket number.
// 16 MSBits are left for application to multiplex on opaque value.
event.Opaque = appOpaque(rq.Opaque)
if len(rq.Extras) >= uprMutationExtraLen &&
event.Opcode == gomemcached.UPR_MUTATION {
event.Seqno = binary.BigEndian.Uint64(rq.Extras[:8])
event.RevSeqno = binary.BigEndian.Uint64(rq.Extras[8:16])
event.Flags = binary.BigEndian.Uint32(rq.Extras[16:20])
event.Expiry = binary.BigEndian.Uint32(rq.Extras[20:24])
event.LockTime = binary.BigEndian.Uint32(rq.Extras[24:28])
event.MetadataSize = binary.BigEndian.Uint16(rq.Extras[28:30])
} else if len(rq.Extras) >= uprDeletetionWithDeletionTimeExtraLen &&
event.Opcode == gomemcached.UPR_DELETION {
event.Seqno = binary.BigEndian.Uint64(rq.Extras[:8])
event.RevSeqno = binary.BigEndian.Uint64(rq.Extras[8:16])
event.Expiry = binary.BigEndian.Uint32(rq.Extras[16:20])
} else if len(rq.Extras) >= uprDeletetionExtraLen &&
event.Opcode == gomemcached.UPR_DELETION ||
event.Opcode == gomemcached.UPR_EXPIRATION {
event.Seqno = binary.BigEndian.Uint64(rq.Extras[:8])
event.RevSeqno = binary.BigEndian.Uint64(rq.Extras[8:16])
event.MetadataSize = binary.BigEndian.Uint16(rq.Extras[16:18])
} else if len(rq.Extras) >= uprSnapshotExtraLen &&
event.Opcode == gomemcached.UPR_SNAPSHOT {
event.SnapstartSeq = binary.BigEndian.Uint64(rq.Extras[:8])
event.SnapendSeq = binary.BigEndian.Uint64(rq.Extras[8:16])
event.SnapshotType = binary.BigEndian.Uint32(rq.Extras[16:20])
}
return event
}
func (event *UprEvent) String() string {
name := gomemcached.CommandNames[event.Opcode]
if name == "" {
name = fmt.Sprintf("#%d", event.Opcode)
}
return name
}
func (event *UprEvent) IsSnappyDataType() bool {
return event.Opcode == gomemcached.UPR_MUTATION && (event.DataType&SnappyDataType > 0)
}
func (feed *UprFeed) sendCommands(mc *Client) {
transmitCh := feed.transmitCh
transmitCl := feed.transmitCl
@ -420,6 +358,10 @@ func (feed *UprFeed) activateStream(vbno, opaque uint16, stream *UprStream) erro
feed.muVbstreams.Lock()
defer feed.muVbstreams.Unlock()
if feed.collectionEnabled {
stream.StreamType = feed.streamsType
}
// Set this stream as the officially connected stream for this vb
stream.connected = true
feed.vbstreams[vbno] = stream
@ -440,14 +382,15 @@ func (mc *Client) NewUprFeed() (*UprFeed, error) {
}
func (mc *Client) NewUprFeedWithConfig(ackByClient bool) (*UprFeed, error) {
feed := &UprFeed{
conn: mc,
closer: make(chan bool, 1),
vbstreams: make(map[uint16]*UprStream),
transmitCh: make(chan *gomemcached.MCRequest),
transmitCl: make(chan bool),
ackByClient: ackByClient,
conn: mc,
closer: make(chan bool, 1),
vbstreams: make(map[uint16]*UprStream),
transmitCh: make(chan *gomemcached.MCRequest),
transmitCl: make(chan bool),
ackByClient: ackByClient,
collectionEnabled: mc.CollectionEnabled(),
streamsType: UninitializedStream,
}
feed.negotiator.initialize()
@ -642,7 +585,22 @@ func (feed *UprFeed) uprOpen(name string, sequence uint32, bufSize uint32, featu
activatedFeatures.EnableExpiry = true
}
if features.EnableStreamId {
rq := &gomemcached.MCRequest{
Opcode: gomemcached.UPR_CONTROL,
Key: []byte("enable_stream_id"),
Body: []byte("true"),
Opaque: getUprOpenCtrlOpaque(),
}
err = sendMcRequestSync(feed.conn, rq)
if err != nil {
return
}
activatedFeatures.EnableStreamId = true
}
// everything is ok so far, set upr feed to open state
feed.activatedFeatures = activatedFeatures
feed.setOpen()
return
}
@ -689,10 +647,60 @@ func (mc *Client) UprGetFailoverLog(
func (feed *UprFeed) UprRequestStream(vbno, opaqueMSB uint16, flags uint32,
vuuid, startSequence, endSequence, snapStart, snapEnd uint64) error {
return feed.UprRequestCollectionsStream(vbno, opaqueMSB, flags, vuuid, startSequence, endSequence, snapStart, snapEnd, nil)
}
func (feed *UprFeed) initStreamType(filter *CollectionsFilter) (err error) {
if filter != nil && filter.UseStreamId && !feed.activatedFeatures.EnableStreamId {
err = fmt.Errorf("Cannot use streamID based filter if the feed was not started with the streamID feature")
return
}
streamInitFunc := func() {
if feed.streamsType != UninitializedStream {
// Shouldn't happen
err = fmt.Errorf("The current feed has already been started in %v mode", feed.streamsType.String())
} else {
if !feed.collectionEnabled {
feed.streamsType = NonCollectionStream
} else {
if filter != nil && filter.UseStreamId {
feed.streamsType = CollectionsStreamId
} else {
feed.streamsType = CollectionsNonStreamId
}
}
}
}
feed.initStreamTypeOnce.Do(streamInitFunc)
return
}
func (feed *UprFeed) UprRequestCollectionsStream(vbno, opaqueMSB uint16, flags uint32,
vbuuid, startSequence, endSequence, snapStart, snapEnd uint64, filter *CollectionsFilter) error {
err := feed.initStreamType(filter)
if err != nil {
return err
}
var mcRequestBody []byte
if filter != nil {
err = filter.IsValid()
if err != nil {
return err
}
mcRequestBody, err = filter.ToStreamReqBody()
if err != nil {
return err
}
}
rq := &gomemcached.MCRequest{
Opcode: gomemcached.UPR_STREAMREQ,
VBucket: vbno,
Opaque: composeOpaque(vbno, opaqueMSB),
Body: mcRequestBody,
}
rq.Extras = make([]byte, 48) // #Extras
@ -700,15 +708,15 @@ func (feed *UprFeed) UprRequestStream(vbno, opaqueMSB uint16, flags uint32,
binary.BigEndian.PutUint32(rq.Extras[4:8], uint32(0))
binary.BigEndian.PutUint64(rq.Extras[8:16], startSequence)
binary.BigEndian.PutUint64(rq.Extras[16:24], endSequence)
binary.BigEndian.PutUint64(rq.Extras[24:32], vuuid)
binary.BigEndian.PutUint64(rq.Extras[24:32], vbuuid)
binary.BigEndian.PutUint64(rq.Extras[32:40], snapStart)
binary.BigEndian.PutUint64(rq.Extras[40:48], snapEnd)
feed.negotiator.registerRequest(vbno, opaqueMSB, vuuid, startSequence, endSequence)
feed.negotiator.registerRequest(vbno, opaqueMSB, vbuuid, startSequence, endSequence)
// Any client that has ever called this method, regardless of return code,
// should expect a potential UPR_CLOSESTREAM message due to this new map entry prior to Transmit.
if err := feed.conn.Transmit(rq); err != nil {
if err = feed.conn.Transmit(rq); err != nil {
logging.Errorf("Error in StreamRequest %s", err.Error())
// If an error occurs during transmit, then the UPRFeed will keep the stream
// in the vbstreams map. This is to prevent nil lookup from any previously
@ -973,6 +981,12 @@ loop:
if err := feed.conn.TransmitResponse(noop); err != nil {
logging.Warnf("failed to transmit command %s. Error %s", noop.Opcode.String(), err.Error())
}
case gomemcached.DCP_SYSTEM_EVENT:
if stream == nil {
logging.Infof("Stream not found for vb %d: %#v", vb, pkt)
break loop
}
event = makeUprEvent(pkt, stream, bytes)
default:
logging.Infof("Recived an unknown response for vbucket %d", vb)
}

381
vendor/github.com/couchbase/gomemcached/flexibleFraming.go generated vendored Normal file
View file

@ -0,0 +1,381 @@
package gomemcached
import (
"encoding/binary"
"fmt"
)
type FrameObjType int
const (
FrameBarrier FrameObjType = iota
FrameDurability FrameObjType = iota
FrameDcpStreamId FrameObjType = iota
FrameOpenTracing FrameObjType = iota
)
type FrameInfo struct {
ObjId FrameObjType
ObjLen int
ObjData []byte
}
var ErrorInvalidOp error = fmt.Errorf("Specified method is not applicable")
var ErrorObjLenNotMatch error = fmt.Errorf("Object length does not match data")
func (f *FrameInfo) Validate() error {
switch f.ObjId {
case FrameBarrier:
if f.ObjLen != 0 {
return fmt.Errorf("Invalid FrameBarrier - length is %v\n", f.ObjLen)
} else if f.ObjLen != len(f.ObjData) {
return ErrorObjLenNotMatch
}
case FrameDurability:
if f.ObjLen != 1 && f.ObjLen != 3 {
return fmt.Errorf("Invalid FrameDurability - length is %v\n", f.ObjLen)
} 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
}

8
vendor/github.com/couchbase/gomemcached/mc_constants.go generated vendored
View file

@ -6,8 +6,10 @@ import (
)
const (
REQ_MAGIC = 0x80
RES_MAGIC = 0x81
REQ_MAGIC = 0x80
RES_MAGIC = 0x81
FLEX_MAGIC = 0x08
FLEX_RES_MAGIC = 0x18
)
// CommandCode for memcached packets.
@ -99,6 +101,8 @@ const (
SUBDOC_GET = CommandCode(0xc5) // Get subdoc. Returns with xattrs
SUBDOC_MULTI_LOOKUP = CommandCode(0xd0) // Multi lookup. Doc xattrs and meta.
DCP_SYSTEM_EVENT = CommandCode(0x5f) // A system event has occurred
)
// command codes that are counted toward DCP control buffer

359
vendor/github.com/couchbase/gomemcached/mc_req.go generated vendored
View file

@ -25,11 +25,17 @@ type MCRequest struct {
Extras, Key, Body, ExtMeta []byte
// Datatype identifier
DataType uint8
// len() calls are expensive - cache this in case for collection
Keylen int
// Flexible Framing Extras
FramingExtras []FrameInfo
// Stored length of incoming framing extras
FramingElen int
}
// Size gives the number of bytes this request requires.
func (req *MCRequest) Size() int {
return HDR_LEN + len(req.Extras) + len(req.Key) + len(req.Body) + len(req.ExtMeta)
return HDR_LEN + len(req.Extras) + len(req.Key) + len(req.Body) + len(req.ExtMeta) + req.FramingElen
}
// A debugging string representation of this request
@ -38,7 +44,23 @@ func (req MCRequest) String() string {
req.Opcode, len(req.Body), req.Key)
}
func (req *MCRequest) fillHeaderBytes(data []byte) int {
func (req *MCRequest) fillRegularHeaderBytes(data []byte) int {
// Byte/ 0 | 1 | 2 | 3 |
// / | | | |
// |0 1 2 3 4 5 6 7|0 1 2 3 4 5 6 7|0 1 2 3 4 5 6 7|0 1 2 3 4 5 6 7|
// +---------------+---------------+---------------+---------------+
// 0| Magic | Opcode | Key length |
// +---------------+---------------+---------------+---------------+
// 4| Extras length | Data type | vbucket id |
// +---------------+---------------+---------------+---------------+
// 8| Total body length |
// +---------------+---------------+---------------+---------------+
// 12| Opaque |
// +---------------+---------------+---------------+---------------+
// 16| CAS |
// | |
// +---------------+---------------+---------------+---------------+
// Total 24 bytes
pos := 0
data[pos] = REQ_MAGIC
@ -84,16 +106,130 @@ func (req *MCRequest) fillHeaderBytes(data []byte) int {
copy(data[pos:pos+len(req.Key)], req.Key)
pos += len(req.Key)
}
return pos
}
// Returns pos and if trailing by half byte
func (req *MCRequest) fillFlexHeaderBytes(data []byte) (int, bool) {
// Byte/ 0 | 1 | 2 | 3 |
// / | | | |
// |0 1 2 3 4 5 6 7|0 1 2 3 4 5 6 7|0 1 2 3 4 5 6 7|0 1 2 3 4 5 6 7|
// +---------------+---------------+---------------+---------------+
// 0| Magic (0x08) | Opcode | Framing extras| Key Length |
// +---------------+---------------+---------------+---------------+
// 4| Extras length | Data type | vbucket id |
// +---------------+---------------+---------------+---------------+
// 8| Total body length |
// +---------------+---------------+---------------+---------------+
// 12| Opaque |
// +---------------+---------------+---------------+---------------+
// 16| CAS |
// | |
// +---------------+---------------+---------------+---------------+
// Total 24 bytes
data[0] = FLEX_MAGIC
data[1] = byte(req.Opcode)
data[2] = byte(req.FramingElen)
data[3] = byte(req.Keylen)
elen := len(req.Extras)
data[4] = byte(elen)
if req.DataType != 0 {
data[5] = byte(req.DataType)
}
binary.BigEndian.PutUint16(data[6:8], req.VBucket)
binary.BigEndian.PutUint32(data[8:12],
uint32(len(req.Body)+req.Keylen+elen+len(req.ExtMeta)+req.FramingElen))
binary.BigEndian.PutUint32(data[12:16], req.Opaque)
if req.Cas != 0 {
binary.BigEndian.PutUint64(data[16:24], req.Cas)
}
pos := HDR_LEN
// Add framing infos
var framingExtras []byte
var outputBytes []byte
var mergeModeSrc []byte
var frameBytes int
var halfByteMode bool
var mergeMode bool
for _, frameInfo := range req.FramingExtras {
if !mergeMode {
outputBytes, halfByteMode = frameInfo.Bytes()
if !halfByteMode {
framingExtras = append(framingExtras, outputBytes...)
frameBytes += len(outputBytes)
} else {
mergeMode = true
mergeModeSrc = outputBytes
}
} else {
outputBytes, halfByteMode = frameInfo.Bytes()
outputBytes := ShiftByteSliceRight4Bits(outputBytes)
if halfByteMode {
// Previous halfbyte merge with this halfbyte will result in a complete byte
mergeMode = false
outputBytes = Merge2HalfByteSlices(mergeModeSrc, outputBytes)
framingExtras = append(framingExtras, outputBytes...)
frameBytes += len(outputBytes)
} else {
// Merge half byte with a non-half byte will result in a combined half-byte that will
// become the source for the next iteration
mergeModeSrc = Merge2HalfByteSlices(mergeModeSrc, outputBytes)
}
}
}
if mergeMode {
// Commit the temporary merge area into framingExtras
framingExtras = append(framingExtras, mergeModeSrc...)
frameBytes += len(mergeModeSrc)
}
copy(data[pos:pos+frameBytes], framingExtras)
pos += frameBytes
// Add Extras
if len(req.Extras) > 0 {
if mergeMode {
outputBytes = ShiftByteSliceRight4Bits(req.Extras)
data = Merge2HalfByteSlices(data, outputBytes)
} else {
copy(data[pos:pos+elen], req.Extras)
}
pos += elen
}
// Add keys
if req.Keylen > 0 {
if mergeMode {
outputBytes = ShiftByteSliceRight4Bits(req.Key)
data = Merge2HalfByteSlices(data, outputBytes)
} else {
copy(data[pos:pos+req.Keylen], req.Key)
}
pos += req.Keylen
}
return pos, mergeMode
}
func (req *MCRequest) FillHeaderBytes(data []byte) (int, bool) {
if req.FramingElen == 0 {
return req.fillRegularHeaderBytes(data), false
} else {
return req.fillFlexHeaderBytes(data)
}
}
// HeaderBytes will return the wire representation of the request header
// (with the extras and key).
func (req *MCRequest) HeaderBytes() []byte {
data := make([]byte, HDR_LEN+len(req.Extras)+len(req.Key))
data := make([]byte, HDR_LEN+len(req.Extras)+len(req.Key)+req.FramingElen)
req.fillHeaderBytes(data)
req.FillHeaderBytes(data)
return data
}
@ -102,16 +238,27 @@ func (req *MCRequest) HeaderBytes() []byte {
func (req *MCRequest) Bytes() []byte {
data := make([]byte, req.Size())
pos := req.fillHeaderBytes(data)
pos, halfByteMode := req.FillHeaderBytes(data)
// TODO - the halfByteMode should be revisited for a more efficient
// way of doing things
if len(req.Body) > 0 {
copy(data[pos:pos+len(req.Body)], req.Body)
if halfByteMode {
shifted := ShiftByteSliceRight4Bits(req.Body)
data = Merge2HalfByteSlices(data, shifted)
} else {
copy(data[pos:pos+len(req.Body)], req.Body)
}
}
if len(req.ExtMeta) > 0 {
copy(data[pos+len(req.Body):pos+len(req.Body)+len(req.ExtMeta)], req.ExtMeta)
if halfByteMode {
shifted := ShiftByteSliceRight4Bits(req.ExtMeta)
data = Merge2HalfByteSlices(data, shifted)
} else {
copy(data[pos+len(req.Body):pos+len(req.Body)+len(req.ExtMeta)], req.ExtMeta)
}
}
return data
}
@ -130,40 +277,44 @@ func (req *MCRequest) Transmit(w io.Writer) (n int, err error) {
return
}
// Receive will fill this MCRequest with the data from a reader.
func (req *MCRequest) Receive(r io.Reader, hdrBytes []byte) (int, error) {
if len(hdrBytes) < HDR_LEN {
hdrBytes = []byte{
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0}
}
n, err := io.ReadFull(r, hdrBytes)
if err != nil {
return n, err
}
if hdrBytes[0] != RES_MAGIC && hdrBytes[0] != REQ_MAGIC {
return n, fmt.Errorf("bad magic: 0x%02x", hdrBytes[0])
}
klen := int(binary.BigEndian.Uint16(hdrBytes[2:]))
elen := int(hdrBytes[4])
func (req *MCRequest) receiveHeaderCommon(hdrBytes []byte) (elen, totalBodyLen int) {
elen = int(hdrBytes[4])
// Data type at 5
req.DataType = uint8(hdrBytes[5])
req.Opcode = CommandCode(hdrBytes[1])
// Vbucket at 6:7
req.VBucket = binary.BigEndian.Uint16(hdrBytes[6:])
totalBodyLen := int(binary.BigEndian.Uint32(hdrBytes[8:]))
totalBodyLen = int(binary.BigEndian.Uint32(hdrBytes[8:]))
req.Opaque = binary.BigEndian.Uint32(hdrBytes[12:])
req.Cas = binary.BigEndian.Uint64(hdrBytes[16:])
return
}
func (req *MCRequest) receiveRegHeader(hdrBytes []byte) (elen, totalBodyLen int) {
elen, totalBodyLen = req.receiveHeaderCommon(hdrBytes)
req.Keylen = int(binary.BigEndian.Uint16(hdrBytes[2:]))
return
}
func (req *MCRequest) receiveFlexibleFramingHeader(hdrBytes []byte) (elen, totalBodyLen, framingElen int) {
elen, totalBodyLen = req.receiveHeaderCommon(hdrBytes)
// For flexible framing header, key length is a single byte at byte index 3
req.Keylen = int(binary.BigEndian.Uint16(hdrBytes[2:]) & 0x0ff)
// Flexible framing lengh is a single byte at index 2
framingElen = int(binary.BigEndian.Uint16(hdrBytes[2:]) >> 8)
req.FramingElen = framingElen
return
}
func (req *MCRequest) populateRegularBody(r io.Reader, totalBodyLen, elen int) (int, error) {
var m int
var err error
if totalBodyLen > 0 {
buf := make([]byte, totalBodyLen)
m, err := io.ReadFull(r, buf)
n += m
m, err = io.ReadFull(r, buf)
if err == nil {
if req.Opcode >= TAP_MUTATION &&
req.Opcode <= TAP_CHECKPOINT_END &&
@ -175,7 +326,7 @@ func (req *MCRequest) Receive(r io.Reader, hdrBytes []byte) (int, error) {
}
req.Extras = buf[0:elen]
req.Key = buf[elen : klen+elen]
req.Key = buf[elen : req.Keylen+elen]
// get the length of extended metadata
extMetaLen := 0
@ -183,15 +334,149 @@ func (req *MCRequest) Receive(r io.Reader, hdrBytes []byte) (int, error) {
extMetaLen = int(binary.BigEndian.Uint16(req.Extras[28:30]))
}
bodyLen := totalBodyLen - klen - elen - extMetaLen
bodyLen := totalBodyLen - req.Keylen - elen - extMetaLen
if bodyLen > MaxBodyLen {
return n, fmt.Errorf("%d is too big (max %d)",
return m, fmt.Errorf("%d is too big (max %d)",
bodyLen, MaxBodyLen)
}
req.Body = buf[klen+elen : klen+elen+bodyLen]
req.ExtMeta = buf[klen+elen+bodyLen:]
req.Body = buf[req.Keylen+elen : req.Keylen+elen+bodyLen]
req.ExtMeta = buf[req.Keylen+elen+bodyLen:]
}
}
return n, err
return m, err
}
func (req *MCRequest) populateFlexBody(r io.Reader, totalBodyLen, elen, framingElen int) (int, error) {
var m int
var err error
if totalBodyLen > 0 {
buf := make([]byte, totalBodyLen)
m, err = io.ReadFull(r, buf)
if err != nil {
return m, err
}
err = req.populateFlexBodyInternal(buf, totalBodyLen, elen, framingElen)
}
return m, err
}
func (req *MCRequest) populateFlexBodyInternal(buf []byte, totalBodyLen, elen, framingElen int) error {
var halfByteOffset bool
var err error
if framingElen > 0 {
var objs []FrameInfo
objs, err, halfByteOffset = parseFrameInfoObjects(buf, framingElen)
if err != nil {
return err
}
req.FramingExtras = objs
}
err = req.populateFlexBodyAfterFrames(buf, totalBodyLen, elen, framingElen, halfByteOffset)
if err != nil {
return err
}
return nil
}
func (req *MCRequest) populateFlexBodyAfterFrames(buf []byte, totalBodyLen, elen, framingElen int, halfByteOffset bool) error {
var idxCursor int = framingElen
if req.Opcode >= TAP_MUTATION && req.Opcode <= TAP_CHECKPOINT_END && len(buf[idxCursor:]) > 1 {
// In these commands there is "engine private"
// data at the end of the extras. The first 2
// bytes of extra data give its length.
if !halfByteOffset {
elen += int(binary.BigEndian.Uint16(buf[idxCursor:]))
} else {
// 0 1 2 3 4 .... 19 20 21 22 ... 32
// ^-----^ ^-------^ ^------------^
// offset data do not care
var buffer uint32 = binary.BigEndian.Uint32(buf[idxCursor:])
buffer &= 0xffff000
elen += int(buffer >> 12)
}
}
// Get the extras
if !halfByteOffset {
req.Extras = buf[idxCursor : idxCursor+elen]
} else {
preShift := buf[idxCursor : idxCursor+elen+1]
req.Extras = ShiftByteSliceLeft4Bits(preShift)
}
idxCursor += elen
// Get the Key
if !halfByteOffset {
req.Key = buf[idxCursor : idxCursor+req.Keylen]
} else {
preShift := buf[idxCursor : idxCursor+req.Keylen+1]
req.Key = ShiftByteSliceLeft4Bits(preShift)
}
idxCursor += req.Keylen
// get the length of extended metadata
extMetaLen := 0
if elen > 29 {
extMetaLen = int(binary.BigEndian.Uint16(req.Extras[28:30]))
}
idxCursor += extMetaLen
bodyLen := totalBodyLen - req.Keylen - elen - extMetaLen - framingElen
if bodyLen > MaxBodyLen {
return fmt.Errorf("%d is too big (max %d)",
bodyLen, MaxBodyLen)
}
if !halfByteOffset {
req.Body = buf[idxCursor : idxCursor+bodyLen]
idxCursor += bodyLen
} else {
preShift := buf[idxCursor : idxCursor+bodyLen+1]
req.Body = ShiftByteSliceLeft4Bits(preShift)
idxCursor += bodyLen
}
if extMetaLen > 0 {
if !halfByteOffset {
req.ExtMeta = buf[idxCursor:]
} else {
preShift := buf[idxCursor:]
req.ExtMeta = ShiftByteSliceLeft4Bits(preShift)
}
}
return nil
}
// Receive will fill this MCRequest with the data from a reader.
func (req *MCRequest) Receive(r io.Reader, hdrBytes []byte) (int, error) {
if len(hdrBytes) < HDR_LEN {
hdrBytes = []byte{
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0}
}
n, err := io.ReadFull(r, hdrBytes)
if err != nil {
fmt.Printf("Err %v\n", err)
return n, err
}
switch hdrBytes[0] {
case RES_MAGIC:
fallthrough
case REQ_MAGIC:
elen, totalBodyLen := req.receiveRegHeader(hdrBytes)
bodyRead, err := req.populateRegularBody(r, totalBodyLen, elen)
return n + bodyRead, err
case FLEX_MAGIC:
elen, totalBodyLen, framingElen := req.receiveFlexibleFramingHeader(hdrBytes)
bodyRead, err := req.populateFlexBody(r, totalBodyLen, elen, framingElen)
return n + bodyRead, err
default:
return n, fmt.Errorf("bad magic: 0x%02x", hdrBytes[0])
}
}

15
vendor/github.com/couchbase/gomemcached/mc_res.go generated vendored
View file

@ -153,6 +153,13 @@ func (res *MCResponse) Transmit(w io.Writer) (n int, err error) {
// Receive will fill this MCResponse with the data from this reader.
func (res *MCResponse) Receive(r io.Reader, hdrBytes []byte) (n int, err error) {
return res.ReceiveWithBuf(r, hdrBytes, nil)
}
// ReceiveWithBuf takes an optional pre-allocated []byte buf which
// will be used if its capacity is large enough, otherwise a new
// []byte slice is allocated.
func (res *MCResponse) ReceiveWithBuf(r io.Reader, hdrBytes, buf []byte) (n int, err error) {
if len(hdrBytes) < HDR_LEN {
hdrBytes = []byte{
0, 0, 0, 0, 0, 0, 0, 0,
@ -187,7 +194,13 @@ func (res *MCResponse) Receive(r io.Reader, hdrBytes []byte) (n int, err error)
}
}()
buf := make([]byte, klen+elen+bodyLen)
bufNeed := klen + elen + bodyLen
if buf != nil && cap(buf) >= bufNeed {
buf = buf[0:bufNeed]
} else {
buf = make([]byte, bufNeed)
}
m, err := io.ReadFull(r, buf)
if err == nil {
res.Extras = buf[0:elen]

235
vendor/github.com/couchbase/goutils/LICENSE.md generated vendored
View file

@ -1,47 +1,202 @@
COUCHBASE INC. COMMUNITY EDITION LICENSE AGREEMENT
Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
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.
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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:
1. Definitions.
Couchbase (r) http://www.Couchbase.com Copyright 2016 Couchbase, Inc.
"License" shall mean the terms and conditions for use, reproduction,
and distribution as defined by Sections 1 through 9 of this document.
As used in this Agreement, "Software" means the object code version of
the applicable elastic data management server software provided by
Couchbase Inc.
"Licensor" shall mean the copyright owner or entity authorized by
the copyright owner that is granting the License.
2. Restrictions. Licensee will not reverse engineer, disassemble, or
decompile the Software (except to the extent such restrictions are
prohibited by law).
"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.
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.
"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
cross-claim or counterclaim in a lawsuit) alleging that the Work
or a Contribution incorporated within the Work constitutes direct
or contributory patent infringement, then any patent licenses
granted to You under this License for that Work shall terminate
as of the date such litigation is filed.
4. Redistribution. You may reproduce and distribute copies of the
Work or Derivative Works thereof in any medium, with or without
modifications, and in Source or Object form, provided that You
meet the following conditions:
(a) You must give any other recipients of the Work or
Derivative Works a copy of this License; and
(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
that You distribute, all copyright, patent, trademark, and
attribution notices from the Source form of the Work,
excluding those notices that do not pertain to any part of
the Derivative Works; and
(d) If the Work includes a "NOTICE" text file as part of its
distribution, then any Derivative Works that You distribute must
include a readable copy of the attribution notices contained
within such NOTICE file, excluding those notices that do not
pertain to any part of the Derivative Works, in at least one
of the following places: within a NOTICE text file distributed
as part of the Derivative Works; within the Source form or
documentation, if provided along with the Derivative Works; or,
within a display generated by the Derivative Works, if and
wherever such third-party notices normally appear. The contents
of the NOTICE file are for informational purposes only and
do not modify the License. You may add Your own attribution
notices within Derivative Works that You distribute, alongside
or as an addendum to the NOTICE text from the Work, provided
that such additional attribution notices cannot be construed
as modifying the License.
You may add Your own copyright statement to Your modifications and
may provide additional or different license terms and conditions
for use, reproduction, or distribution of Your modifications, or
for any such Derivative Works as a whole, provided Your use,
reproduction, and distribution of the Work otherwise complies with
the conditions stated in this License.
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.
6. Trademarks. This License does not grant permission to use the trade
names, trademarks, service marks, or product names of the Licensor,
except as required for reasonable and customary use in describing the
origin of the Work and reproducing the content of the NOTICE file.
7. Disclaimer of Warranty. Unless required by applicable law or
agreed to in writing, Licensor provides the Work (and each
Contributor provides its Contributions) on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
implied, including, without limitation, any warranties or conditions
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
PARTICULAR PURPOSE. You are solely responsible for determining the
appropriateness of using or redistributing the Work and assume any
risks associated with Your exercise of permissions under this License.
8. Limitation of Liability. In no event and under no legal theory,
whether in tort (including negligence), contract, or otherwise,
unless required by applicable law (such as deliberate and grossly
negligent acts) or agreed to in writing, shall any Contributor be
liable to You for damages, including any direct, indirect, special,
incidental, or consequential damages of any character arising as a
result of this License or out of the use or inability to use the
Work (including but not limited to damages for loss of goodwill,
work stoppage, computer failure or malfunction, or any and all
other commercial damages or losses), even if such Contributor
has been advised of the possibility of such damages.
9. Accepting Warranty or Additional Liability. While redistributing
the Work or Derivative Works thereof, You may choose to offer,
and charge a fee for, acceptance of support, warranty, indemnity,
or other liability obligations and/or rights consistent with this
License. However, in accepting such obligations, You may act only
on Your own behalf and on Your sole responsibility, not on behalf
of any other Contributor, and only if You agree to indemnify,
defend, and hold each Contributor harmless for any liability
incurred by, or claims asserted against, such Contributor by reason
of your accepting any such warranty or additional liability.
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
boilerplate notice, with the fields enclosed by brackets "{}"
replaced with your own identifying information. (Don't include
the brackets!) The text should be enclosed in the appropriate
comment syntax for the file format. We also recommend that a
file or class name and description of purpose be included on the
same "printed page" as the copyright notice for easier
identification within third-party archives.
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.
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.

4
vendor/modules.txt vendored
View file

@ -99,10 +99,10 @@ github.com/boombuler/barcode/qr
github.com/boombuler/barcode/utils
# github.com/bradfitz/gomemcache v0.0.0-20190329173943-551aad21a668
github.com/bradfitz/gomemcache/memcache
# github.com/couchbase/gomemcached v0.0.0-20190515232915-c4b4ca0eb21d
# github.com/couchbase/gomemcached v0.0.0-20191004160342-7b5da2ec40b2
github.com/couchbase/gomemcached
github.com/couchbase/gomemcached/client
# github.com/couchbase/goutils v0.0.0-20190315194238-f9d42b11473b
# github.com/couchbase/goutils v0.0.0-20191018232750-b49639060d85
github.com/couchbase/goutils/logging
github.com/couchbase/goutils/scramsha
# github.com/couchbase/vellum v0.0.0-20190829182332-ef2e028c01fd