storage

package
v0.0.3 Latest Latest
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This package is not in the latest version of its module.

 Go to latest Published: Sep 9, 2022 License: GPL-3.0 Imports: 26 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	Silent = iota
	Error
	Warn
	Info
)
View Source 
const DBFileName = "0.db"
View Source 
const HeaderSize = 0x100
View Source 
const SyncInterval = time.Minute
View Source 
const WalFileName = "0.wal"

Variables

View Source 
var (
	ErrInvalidLengthProto        = fmt.Errorf("proto: negative length found during unmarshaling")
	ErrIntOverflowProto          = fmt.Errorf("proto: integer overflow")
	ErrUnexpectedEndOfGroupProto = fmt.Errorf("proto: unexpected end of group")
)
View Source 
var Op_name = map[int32]string{
	0: "None",
	1: "Modify",
	2: "Del",
	3: "Discard",
}
View Source 
var Op_value = map[string]int32{
	"None":    0,
	"Modify":  1,
	"Del":     2,
	"Discard": 3,
}

Functions

func GenUUID 

func GenUUID() (string, error)

func IsDir 

func IsDir(filename string) bool

func IsFile 

func IsFile(filename string) bool

func SetLogger 

func SetLogger(l Logger)

func ToAbs 

func ToAbs(p string) (string, error)

Types

type BinLog 

type BinLog struct {
}

func (*BinLog) AppendEntry 

func (l *BinLog) AppendEntry(f File, pos int64, entry *LogEntry) (int64, error)

写失败将破坏文件数据

func (*BinLog) IsValidFile 

func (l *BinLog) IsValidFile(f File) (bool, error)

TODO: 更多校验

func (*BinLog) ReadEntry 

func (l *BinLog) ReadEntry(f File, pos int64, entry *LogEntry) (int64, error)

func (*BinLog) ReadHeader 

func (l *BinLog) ReadHeader(f File) (*FileHeader, error)

func (*BinLog) WriteHeader 

func (l *BinLog) WriteHeader(f File, header *FileHeader) error

写失败将破坏文件数据

type ChangeCount 

type ChangeCount map[string]int32

func (*ChangeCount) Scan 

func (n *ChangeCount) Scan(value any) error

Scan implements the Scanner interface.

func (ChangeCount) Value 

func (n ChangeCount) Value() (driver.Value, error)

Value implements the driver Valuer interface.

type DBRecord 

type DBRecord struct {
	Key                string      `gorm:"index;column:key"`
	Value              string      `gorm:"column:value"`
	MachineID          string      `gorm:"column:machine_id"`
	Offset             int64       `gorm:"column:offset"`
	PrevMachineID      string      `gorm:"column:prev_machine_id"`
	Seq                uint64      `gorm:"column:seq"`
	CurrentLogGid      string      `gorm:"uniqueIndex;column:gid"`
	PrevLogGid         string      `gorm:"column:prev_log_gid"`
	IsDiscarded        bool        `gorm:"column:is_discarded"`
	IsDeleted          bool        `gorm:"column:is_deleted"`
	MachineChangeCount ChangeCount `gorm:"column:change_count"`
	Num                int64       `gorm:"num"`
	PrevNum            int64       `gorm:"prev_num"`
	CreatedAt          time.Time
	UpdatedAt          time.Time
	DeletedAt          sql.NullTime `gorm:"index"`
}

is_deleted || is_discarded can be removed from storage any time

func (*DBRecord) AddChange 

func (r *DBRecord) AddChange(machineID string, changes int32) map[string]int32

func (*DBRecord) Changes 

func (r *DBRecord) Changes(machineID string) int32

func (*DBRecord) Visible 

func (r *DBRecord) Visible() bool

type File 

type File interface {
	io.ReadWriteCloser
	io.Seeker
	Flush() error
	Path() string
}

不要依赖文件内部维护的position

func OpenFile added in v0.0.3 

func OpenFile(filename string, readonly bool) (File, error)

type FileHeader added in v0.0.2 

type FileHeader struct {
	Id                   string   `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
	FileEnd              int64    `protobuf:"varint,2,opt,name=file_end,json=fileEnd,proto3" json:"file_end,omitempty"`
	LastEntryId          string   `protobuf:"bytes,3,opt,name=last_entry_id,json=lastEntryId,proto3" json:"last_entry_id,omitempty"`
	EntryNum             int64    `protobuf:"varint,4,opt,name=entry_num,json=entryNum,proto3" json:"entry_num,omitempty"`
	XXX_NoUnkeyedLiteral struct{} `json:"-"`
	XXX_unrecognized     []byte   `json:"-"`
	XXX_sizecache        int32    `json:"-"`
}

func (*FileHeader) Descriptor added in v0.0.2 

func (*FileHeader) Descriptor() ([]byte, []int)

func (*FileHeader) GetEntryNum added in v0.0.2 

func (m *FileHeader) GetEntryNum() int64

func (*FileHeader) GetFileEnd added in v0.0.2 

func (m *FileHeader) GetFileEnd() int64

func (*FileHeader) GetId added in v0.0.2 

func (m *FileHeader) GetId() string

func (*FileHeader) GetLastEntryId added in v0.0.2 

func (m *FileHeader) GetLastEntryId() string

func (*FileHeader) Marshal added in v0.0.2 

func (m *FileHeader) Marshal() (dAtA []byte, err error)

func (*FileHeader) MarshalTo added in v0.0.2 

func (m *FileHeader) MarshalTo(dAtA []byte) (int, error)

func (*FileHeader) MarshalToSizedBuffer added in v0.0.2 

func (m *FileHeader) MarshalToSizedBuffer(dAtA []byte) (int, error)

func (*FileHeader) ProtoMessage added in v0.0.2 

func (*FileHeader) ProtoMessage()

func (*FileHeader) Reset added in v0.0.2 

func (m *FileHeader) Reset()

func (*FileHeader) Size added in v0.0.2 

func (m *FileHeader) Size() (n int)

func (*FileHeader) String added in v0.0.2 

func (m *FileHeader) String() string

func (*FileHeader) Unmarshal added in v0.0.2 

func (m *FileHeader) Unmarshal(dAtA []byte) error

func (*FileHeader) XXX_DiscardUnknown added in v0.0.2 

func (m *FileHeader) XXX_DiscardUnknown()

func (*FileHeader) XXX_Marshal added in v0.0.2 

func (m *FileHeader) XXX_Marshal(b []byte, deterministic bool) ([]byte, error)

func (*FileHeader) XXX_Merge added in v0.0.2 

func (m *FileHeader) XXX_Merge(src proto.Message)

func (*FileHeader) XXX_Size added in v0.0.2 

func (m *FileHeader) XXX_Size() int

func (*FileHeader) XXX_Unmarshal added in v0.0.2 

func (m *FileHeader) XXX_Unmarshal(b []byte) error

type Iterator 

type Iterator interface {
	Next() bool
}

type JsonLog 

type JsonLog struct {
}

func (*JsonLog) AppendEntry 

func (l *JsonLog) AppendEntry(f File, pos int64, entry *LogEntry) (int64, error)

写失败将破坏文件数据

func (*JsonLog) IsValidFile 

func (l *JsonLog) IsValidFile(f File) (bool, error)

TODO: 更多校验

func (*JsonLog) ReadEntry 

func (l *JsonLog) ReadEntry(f File, pos int64, entry *LogEntry) (int64, error)

func (*JsonLog) ReadHeader 

func (l *JsonLog) ReadHeader(f File) (*FileHeader, error)

func (*JsonLog) WriteHeader 

func (l *JsonLog) WriteHeader(f File, header *FileHeader) error

写失败将破坏文件数据

type LogEntry added in v0.0.2 

type LogEntry struct {
	Ops                  []*LogOperation `protobuf:"bytes,1,rep,name=ops,proto3" json:"ops,omitempty"`
	XXX_NoUnkeyedLiteral struct{}        `json:"-"`
	XXX_unrecognized     []byte          `json:"-"`
	XXX_sizecache        int32           `json:"-"`
}

func (*LogEntry) Descriptor added in v0.0.2 

func (*LogEntry) Descriptor() ([]byte, []int)

func (*LogEntry) GetOps added in v0.0.2 

func (m *LogEntry) GetOps() []*LogOperation

func (*LogEntry) Marshal added in v0.0.2 

func (m *LogEntry) Marshal() (dAtA []byte, err error)

func (*LogEntry) MarshalTo added in v0.0.2 

func (m *LogEntry) MarshalTo(dAtA []byte) (int, error)

func (*LogEntry) MarshalToSizedBuffer added in v0.0.2 

func (m *LogEntry) MarshalToSizedBuffer(dAtA []byte) (int, error)

func (*LogEntry) ProtoMessage added in v0.0.2 

func (*LogEntry) ProtoMessage()

func (*LogEntry) Reset added in v0.0.2 

func (m *LogEntry) Reset()

func (*LogEntry) Size added in v0.0.2 

func (m *LogEntry) Size() (n int)

func (*LogEntry) String added in v0.0.2 

func (m *LogEntry) String() string

func (*LogEntry) Unmarshal added in v0.0.2 

func (m *LogEntry) Unmarshal(dAtA []byte) error

func (*LogEntry) XXX_DiscardUnknown added in v0.0.2 

func (m *LogEntry) XXX_DiscardUnknown()

func (*LogEntry) XXX_Marshal added in v0.0.2 

func (m *LogEntry) XXX_Marshal(b []byte, deterministic bool) ([]byte, error)

func (*LogEntry) XXX_Merge added in v0.0.2 

func (m *LogEntry) XXX_Merge(src proto.Message)

func (*LogEntry) XXX_Size added in v0.0.2 

func (m *LogEntry) XXX_Size() int

func (*LogEntry) XXX_Unmarshal added in v0.0.2 

func (m *LogEntry) XXX_Unmarshal(b []byte) error

type LogFormat 

type LogFormat interface {
	WriteHeader(f File, header *FileHeader) error
	IsValidFile(f File) (bool, error)
	ReadHeader(f File) (*FileHeader, error)
	AppendEntry(f File, pos int64, entry *LogEntry) (int64, error)
	ReadEntry(f File, pos int64, entry *LogEntry) (int64, error)
}

type LogInput 

type LogInput struct {
	// contains filtered or unexported fields
}

type LogOperation added in v0.0.2 

type LogOperation struct {
	Op                   int32            `protobuf:"varint,1,opt,name=op,proto3" json:"op,omitempty"`
	Key                  string           `protobuf:"bytes,2,opt,name=key,proto3" json:"key,omitempty"`
	Value                string           `protobuf:"bytes,3,opt,name=value,proto3" json:"value,omitempty"`
	Gid                  string           `protobuf:"bytes,4,opt,name=gid,proto3" json:"gid,omitempty"`
	PrevGid              string           `protobuf:"bytes,5,opt,name=prev_gid,json=prevGid,proto3" json:"prev_gid,omitempty"`
	PrevValue            string           `protobuf:"bytes,6,opt,name=prev_value,json=prevValue,proto3" json:"prev_value,omitempty"`
	Seq                  uint64           `protobuf:"varint,7,opt,name=seq,proto3" json:"seq,omitempty"`
	MachineId            string           `protobuf:"bytes,8,opt,name=machine_id,json=machineId,proto3" json:"machine_id,omitempty"`
	PrevMachineId        string           `protobuf:"bytes,9,opt,name=prev_machine_id,json=prevMachineId,proto3" json:"prev_machine_id,omitempty"`
	Changes              map[string]int32 `` /* 157-byte string literal not displayed */
	Num                  int64            `protobuf:"varint,11,opt,name=num,proto3" json:"num,omitempty"`
	PrevNum              int64            `protobuf:"varint,12,opt,name=prev_num,json=prevNum,proto3" json:"prev_num,omitempty"`
	XXX_NoUnkeyedLiteral struct{}         `json:"-"`
	XXX_unrecognized     []byte           `json:"-"`
	XXX_sizecache        int32            `json:"-"`
}

func (*LogOperation) Descriptor added in v0.0.2 

func (*LogOperation) Descriptor() ([]byte, []int)

func (*LogOperation) GetChanges added in v0.0.2 

func (m *LogOperation) GetChanges() map[string]int32

func (*LogOperation) GetGid added in v0.0.2 

func (m *LogOperation) GetGid() string

func (*LogOperation) GetKey added in v0.0.2 

func (m *LogOperation) GetKey() string

func (*LogOperation) GetMachineId added in v0.0.2 

func (m *LogOperation) GetMachineId() string

func (*LogOperation) GetNum added in v0.0.2 

func (m *LogOperation) GetNum() int64

func (*LogOperation) GetOp added in v0.0.2 

func (m *LogOperation) GetOp() int32

func (*LogOperation) GetPrevGid added in v0.0.2 

func (m *LogOperation) GetPrevGid() string

func (*LogOperation) GetPrevMachineId added in v0.0.2 

func (m *LogOperation) GetPrevMachineId() string

func (*LogOperation) GetPrevNum added in v0.0.2 

func (m *LogOperation) GetPrevNum() int64

func (*LogOperation) GetPrevValue added in v0.0.2 

func (m *LogOperation) GetPrevValue() string

func (*LogOperation) GetSeq added in v0.0.2 

func (m *LogOperation) GetSeq() uint64

func (*LogOperation) GetValue added in v0.0.2 

func (m *LogOperation) GetValue() string

func (*LogOperation) Marshal added in v0.0.2 

func (m *LogOperation) Marshal() (dAtA []byte, err error)

func (*LogOperation) MarshalTo added in v0.0.2 

func (m *LogOperation) MarshalTo(dAtA []byte) (int, error)

func (*LogOperation) MarshalToSizedBuffer added in v0.0.2 

func (m *LogOperation) MarshalToSizedBuffer(dAtA []byte) (int, error)

func (*LogOperation) ProtoMessage added in v0.0.2 

func (*LogOperation) ProtoMessage()

func (*LogOperation) Reset added in v0.0.2 

func (m *LogOperation) Reset()

func (*LogOperation) Size added in v0.0.2 

func (m *LogOperation) Size() (n int)

func (*LogOperation) String added in v0.0.2 

func (m *LogOperation) String() string

func (*LogOperation) Unmarshal added in v0.0.2 

func (m *LogOperation) Unmarshal(dAtA []byte) error

func (*LogOperation) XXX_DiscardUnknown added in v0.0.2 

func (m *LogOperation) XXX_DiscardUnknown()

func (*LogOperation) XXX_Marshal added in v0.0.2 

func (m *LogOperation) XXX_Marshal(b []byte, deterministic bool) ([]byte, error)

func (*LogOperation) XXX_Merge added in v0.0.2 

func (m *LogOperation) XXX_Merge(src proto.Message)

func (*LogOperation) XXX_Size added in v0.0.2 

func (m *LogOperation) XXX_Size() int

func (*LogOperation) XXX_Unmarshal added in v0.0.2 

func (m *LogOperation) XXX_Unmarshal(b []byte) error

type LogProgress 

type LogProgress struct {
	Offset    int64  `gorm:"column:offset"` // HeaderSize should be used as initial value
	Num       int64  `gorm:"column:num"`
	Gid       string `gorm:"column:gid"`
	MachineID string `gorm:"uniqueIndex;column:machine_id"`
	CreatedAt time.Time
	UpdatedAt time.Time
	DeletedAt sql.NullTime `gorm:"index"`
}

call newLogProgress to make instance

type LogProgressMgr 

type LogProgressMgr struct {
	// contains filtered or unexported fields
}

func (*LogProgressMgr) Get 

func (m *LogProgressMgr) Get(machineID string) *LogProgress

func (*LogProgressMgr) Init 

func (m *LogProgressMgr) Init(progress ...*LogProgress)

func (*LogProgressMgr) Set 

func (m *LogProgressMgr) Set(machineID string, progress *LogProgress)

type LogRunner 

type LogRunner struct {
	// contains filtered or unexported fields
}

func (*LogRunner) Init 

func (r *LogRunner) Init(machineID string, s NodeStorage) error

func (*LogRunner) Run 

func (r *LogRunner) Run(i ...*LogInput) (*RunLogResult, error)

type Logger 

type Logger interface {
	SetLevel(level int) Logger
	Category(catetory string) Logger
	AddSkip(skip int) Logger
	Warn(format string, args ...interface{})
	Error(format string, args ...interface{})
	Info(format string, args ...interface{})
}

type NetworkInfo 

type NetworkInfo struct {
	// contains filtered or unexported fields
}

func (*NetworkInfo) Add 

func (n *NetworkInfo) Add(name string) *ParticipantInfo

func (*NetworkInfo) Init 

func (n *NetworkInfo) Init(wd string) error

type NodeStorage 

type NodeStorage interface {
	ReadOnlyNodeStorage
	Add(record *DBRecord) error
	Replace(old string, new *DBRecord) error
	Merge(other ReadOnlyNodeStorage) error
}

type NodeStorageImpl 

type NodeStorageImpl struct {
	// contains filtered or unexported fields
}

func (*NodeStorageImpl) Add 

func (n *NodeStorageImpl) Add(record *DBRecord) error

func (*NodeStorageImpl) AllNodes 

func (n *NodeStorageImpl) AllNodes() ([]*DBRecord, error)

func (*NodeStorageImpl) GetByGid 

func (n *NodeStorageImpl) GetByGid(gid string) (*DBRecord, error)

func (*NodeStorageImpl) GetByKey 

func (n *NodeStorageImpl) GetByKey(key string) ([]*DBRecord, error)

func (*NodeStorageImpl) Init 

func (n *NodeStorageImpl) Init()

func (*NodeStorageImpl) Merge 

func (n *NodeStorageImpl) Merge(other ReadOnlyNodeStorage) error

func (*NodeStorageImpl) Replace 

func (n *NodeStorageImpl) Replace(old string, new *DBRecord) error

type Op added in v0.0.2 

type Op int32
const (
	Op_None    Op = 0
	Op_Modify  Op = 1
	Op_Del     Op = 2
	Op_Discard Op = 3
)

func (Op) EnumDescriptor added in v0.0.2 

func (Op) EnumDescriptor() ([]byte, []int)

func (Op) String added in v0.0.2 

func (x Op) String() string

type Participant 

type Participant struct {
	// contains filtered or unexported fields
}

Participant ...

func (*Participant) Accept 

func (p *Participant) Accept(v *Value, seq int) error

func (*Participant) All 

func (p *Participant) All() ([]*Value, error)

func (*Participant) AllConflicts 

func (p *Participant) AllConflicts() ([]*Value, error)

func (*Participant) Close 

func (p *Participant) Close()

func (*Participant) Del 

func (p *Participant) Del(key string) error

func (*Participant) Has 

func (p *Participant) Has(key string) (bool, error)

func (*Participant) Init 

func (p *Participant) Init(wd string, machineID string) (err error)

func (*Participant) Load 

func (p *Participant) Load(key string) (*Value, error)

func (*Participant) Save 

func (p *Participant) Save(key string, value string) error

type ParticipantInfo 

type ParticipantInfo struct {
	// contains filtered or unexported fields
}

func (*ParticipantInfo) Init 

func (p *ParticipantInfo) Init(wd string, name string, n *NetworkInfo)

type ReadOnlyNodeStorage 

type ReadOnlyNodeStorage interface {
	GetByKey(key string) ([]*DBRecord, error)
	GetByGid(gid string) (*DBRecord, error)
	AllNodes() ([]*DBRecord, error)
}

type RunLogContext 

type RunLogContext struct {
	// contains filtered or unexported fields
}

func (*RunLogContext) Init 

func (c *RunLogContext) Init(i ...*LogInput)

func (*RunLogContext) Progress 

func (c *RunLogContext) Progress(machineID string) *LogProgress

type RunLogError 

type RunLogError struct {
	// contains filtered or unexported fields
}

func (*RunLogError) Error 

func (e *RunLogError) Error() string

type RunLogResult 

type RunLogResult struct {
	// contains filtered or unexported fields
}

func (*RunLogResult) Error 

func (r *RunLogResult) Error() error

func (*RunLogResult) Init 

func (r *RunLogResult) Init(s map[string]*LogProgress, e *RunLogError)

func (*RunLogResult) Process 

func (r *RunLogResult) Process(machineID string) *LogProgress

type RunLogWorker 

type RunLogWorker struct {
	// contains filtered or unexported fields
}

type SqliteAdapter 

type SqliteAdapter struct {
	// contains filtered or unexported fields
}

SqliteAdapter ...

func (*SqliteAdapter) Add 

func (s *SqliteAdapter) Add(record *DBRecord) error

func (*SqliteAdapter) AllNodes 

func (s *SqliteAdapter) AllNodes() ([]*DBRecord, error)

func (*SqliteAdapter) Close 

func (s *SqliteAdapter) Close() error

func (*SqliteAdapter) GetByGid 

func (s *SqliteAdapter) GetByGid(gid string) (*DBRecord, error)

func (*SqliteAdapter) GetByKey 

func (s *SqliteAdapter) GetByKey(key string) ([]*DBRecord, error)

func (*SqliteAdapter) Has 

func (s *SqliteAdapter) Has(gid string) (bool, error)

func (*SqliteAdapter) Init 

func (s *SqliteAdapter) Init(dbFile string) error

func (*SqliteAdapter) Merge 

func (s *SqliteAdapter) Merge(other ReadOnlyNodeStorage) error

func (*SqliteAdapter) Processes 

func (s *SqliteAdapter) Processes() ([]*LogProgress, error)

func (*SqliteAdapter) Replace 

func (s *SqliteAdapter) Replace(old string, new *DBRecord) error

func (*SqliteAdapter) Transaction 

func (s *SqliteAdapter) Transaction(f func(s *SqliteAdapter) error) error

type Storage 

type Storage interface {
	Save(key string, value string) error
	Del(key string) error
	Has(key string) (bool, error)
	Load(key string) (val *Value, err error)
	All() ([]*Value, error)
	Accept(v *Value, seq int) error
}

Storage ...

type Value 

type Value struct {
	// contains filtered or unexported fields
}

func (*Value) Branches 

func (v *Value) Branches() []*ValueVersion

func (*Value) Main 

func (v *Value) Main() *ValueVersion

func (*Value) String 

func (v *Value) String() string

func (*Value) ValidSeq 

func (v *Value) ValidSeq(seq int) bool

func (*Value) Versions 

func (v *Value) Versions() []*ValueVersion

type ValueVersion 

type ValueVersion struct {
	// contains filtered or unexported fields
}

func (*ValueVersion) String 

func (v *ValueVersion) String() string

type Wal 

type Wal struct {
	// contains filtered or unexported fields
}

func (*Wal) Append 

func (w *Wal) Append(logOp ...*LogOperation) (string, int64, error)

Append multiple operations will be appended as a single log entry returns the gid of the last operation generate and populate .Num, .Gid for each operation

func (*Wal) AppendRaw 

func (w *Wal) AppendRaw(logOp ...*LogOperation) error

func (*Wal) Close 

func (w *Wal) Close() error

func (*Wal) Flush 

func (w *Wal) Flush() error

func (*Wal) Init 

func (w *Wal) Init(filename string, l LogFormat, readonly bool) (err error)

func (*Wal) Iterator 

func (w *Wal) Iterator() *WalIterator

func (*Wal) IteratorFrom 

func (w *Wal) IteratorFrom(start string, inclusive bool) (*WalIterator, error)

func (*Wal) IteratorOffset 

func (w *Wal) IteratorOffset(offset int64) *WalIterator

func (*Wal) Offset 

func (w *Wal) Offset() int64

func (*Wal) RangeIterator 

func (w *Wal) RangeIterator(start string, end string, includeStart bool, includeEnd bool) (*WalIterator, error)

type WalHelper 

type WalHelper struct {
	// contains filtered or unexported fields
}

func (*WalHelper) Append 

func (w *WalHelper) Append(logOp ...*LogOperation) (string, int64, error)

func (*WalHelper) Close 

func (w *WalHelper) Close()

func (*WalHelper) Init 

func (w *WalHelper) Init(filename string, l LogFormat, writeCount int)

func (*WalHelper) Offset 

func (w *WalHelper) Offset() (int64, error)

type WalIterator 

type WalIterator struct {
	// contains filtered or unexported fields
}

func (*WalIterator) Init 

func (i *WalIterator) Init(w *Wal)

func (*WalIterator) InitWithOffset 

func (i *WalIterator) InitWithOffset(w *Wal, offset int64)

func (*WalIterator) LogOp 

func (i *WalIterator) LogOp() *LogOperation

func (*WalIterator) Next 

func (i *WalIterator) Next() (hasNext bool)

func (*WalIterator) Offset 

func (i *WalIterator) Offset() int64

Source Files

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