checkpoints

type CheckpointStatus uint8

type CheckpointsDB interface {
	Initialize(ctx context.Context, cfg *config.Config, dbInfo map[string]*TidbDBInfo) error
	TaskCheckpoint(ctx context.Context) (*TaskCheckpoint, error)
	Get(ctx context.Context, tableName string) (*TableCheckpoint, error)
	Close() error
	// InsertEngineCheckpoints initializes the checkpoints related to a table.
	// It assumes the entire table has not been imported before and will fill in
	// default values for the column permutations and checksums.
	InsertEngineCheckpoints(ctx context.Context, tableName string, checkpoints map[int32]*EngineCheckpoint) error
	Update(checkpointDiffs map[string]*TableCheckpointDiff)

	RemoveCheckpoint(ctx context.Context, tableName string) error
	// MoveCheckpoints renames the checkpoint schema to include a suffix
	// including the taskID (e.g. `tidb_lightning_checkpoints.1234567890.bak`).
	MoveCheckpoints(ctx context.Context, taskID int64) error
	IgnoreErrorCheckpoint(ctx context.Context, tableName string) error
	DestroyErrorCheckpoint(ctx context.Context, tableName string) ([]DestroyedTableCheckpoint, error)
	DumpTables(ctx context.Context, csv io.Writer) error
	DumpEngines(ctx context.Context, csv io.Writer) error
	DumpChunks(ctx context.Context, csv io.Writer) error
}

type CheckpointsModel struct {
	// key is table_name
	Checkpoints    map[string]*TableCheckpointModel `` /* 163-byte string literal not displayed */
	TaskCheckpoint *TaskCheckpointModel             `protobuf:"bytes,2,opt,name=task_checkpoint,json=taskCheckpoint,proto3" json:"task_checkpoint,omitempty"`
}

type ChunkCheckpoint struct {
	Key               ChunkCheckpointKey
	FileMeta          mydump.SourceFileMeta
	ColumnPermutation []int
	Chunk             mydump.Chunk
	Checksum          verify.KVChecksum
	Timestamp         int64
}

type ChunkCheckpointKey struct {
	Path   string
	Offset int64
}

type ChunkCheckpointMerger struct {
	EngineID          int32
	Key               ChunkCheckpointKey
	Checksum          verify.KVChecksum
	Pos               int64
	RowID             int64
	ColumnPermutation []int
}

type ChunkCheckpointModel struct {
	Path              string  `protobuf:"bytes,1,opt,name=path,proto3" json:"path,omitempty"`
	Offset            int64   `protobuf:"varint,2,opt,name=offset,proto3" json:"offset,omitempty"`
	ColumnPermutation []int32 `protobuf:"varint,12,rep,packed,name=column_permutation,json=columnPermutation,proto3" json:"column_permutation,omitempty"`
	EndOffset         int64   `protobuf:"varint,5,opt,name=end_offset,json=endOffset,proto3" json:"end_offset,omitempty"`
	Pos               int64   `protobuf:"varint,6,opt,name=pos,proto3" json:"pos,omitempty"`
	PrevRowidMax      int64   `protobuf:"varint,7,opt,name=prev_rowid_max,json=prevRowidMax,proto3" json:"prev_rowid_max,omitempty"`
	RowidMax          int64   `protobuf:"varint,8,opt,name=rowid_max,json=rowidMax,proto3" json:"rowid_max,omitempty"`
	KvcBytes          uint64  `protobuf:"varint,9,opt,name=kvc_bytes,json=kvcBytes,proto3" json:"kvc_bytes,omitempty"`
	KvcKvs            uint64  `protobuf:"varint,10,opt,name=kvc_kvs,json=kvcKvs,proto3" json:"kvc_kvs,omitempty"`
	KvcChecksum       uint64  `protobuf:"fixed64,11,opt,name=kvc_checksum,json=kvcChecksum,proto3" json:"kvc_checksum,omitempty"`
	Timestamp         int64   `protobuf:"fixed64,13,opt,name=timestamp,proto3" json:"timestamp,omitempty"`
	Type              int32   `protobuf:"varint,14,opt,name=type,proto3" json:"type,omitempty"`
	Compression       int32   `protobuf:"varint,15,opt,name=compression,proto3" json:"compression,omitempty"`
	SortKey           string  `protobuf:"bytes,16,opt,name=sort_key,json=sortKey,proto3" json:"sort_key,omitempty"`
	FileSize          int64   `protobuf:"varint,17,opt,name=file_size,json=fileSize,proto3" json:"file_size,omitempty"`
}

type DestroyedTableCheckpoint struct {
	TableName   string
	MinEngineID int32
	MaxEngineID int32
}

type EngineCheckpoint struct {
	Status CheckpointStatus
	Chunks []*ChunkCheckpoint // a sorted array
}

type EngineCheckpointModel struct {
	Status uint32 `protobuf:"varint,1,opt,name=status,proto3" json:"status,omitempty"`
	// key is "$path:$offset"
	Chunks map[string]*ChunkCheckpointModel `` /* 153-byte string literal not displayed */
}

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

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

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

type NullCheckpointsDB struct{}

type RebaseCheckpointMerger struct {
	AllocBase int64
}

type Session interface {
	Close()
	Execute(context.Context, string) ([]sqlexec.RecordSet, error)
	CommitTxn(context.Context) error
	RollbackTxn(context.Context)
	PrepareStmt(sql string) (stmtID uint32, paramCount int, fields []*ast.ResultField, err error)
	ExecutePreparedStmt(ctx context.Context, stmtID uint32, param []types.Datum) (sqlexec.RecordSet, error)
	DropPreparedStmt(stmtID uint32) error
}

type StatusCheckpointMerger struct {
	EngineID int32 // WholeTableEngineID == apply to whole table.
	Status   CheckpointStatus
}

type TableCheckpoint struct {
	Status    CheckpointStatus
	AllocBase int64
	Engines   map[int32]*EngineCheckpoint
	TableID   int64
}

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

type TableCheckpointMerger interface {
	// MergeInto the table checkpoint diff from a status update or chunk update.
	// If there are multiple updates to the same table, only the last one will
	// take effect. Therefore, the caller must ensure events for the same table
	// are properly ordered by the global time (an old event must be merged
	// before the new one).
	MergeInto(cpd *TableCheckpointDiff)
}

type TableCheckpointModel struct {
	Hash      []byte                           `protobuf:"bytes,1,opt,name=hash,proto3" json:"hash,omitempty"`
	Status    uint32                           `protobuf:"varint,3,opt,name=status,proto3" json:"status,omitempty"`
	AllocBase int64                            `protobuf:"varint,4,opt,name=alloc_base,json=allocBase,proto3" json:"alloc_base,omitempty"`
	Engines   map[int32]*EngineCheckpointModel `` /* 158-byte string literal not displayed */
	TableID   int64                            `protobuf:"varint,9,opt,name=tableID,proto3" json:"tableID,omitempty"`
}

type TaskCheckpoint struct {
	TaskId       int64
	SourceDir    string
	Backend      string
	ImporterAddr string
	TiDBHost     string
	TiDBPort     int
	PdAddr       string
	SortedKVDir  string
	LightningVer string
}

type TaskCheckpointModel struct {
	TaskId       int64  `protobuf:"varint,1,opt,name=task_id,json=taskId,proto3" json:"task_id,omitempty"`
	SourceDir    string `protobuf:"bytes,2,opt,name=source_dir,json=sourceDir,proto3" json:"source_dir,omitempty"`
	Backend      string `protobuf:"bytes,3,opt,name=backend,proto3" json:"backend,omitempty"`
	ImporterAddr string `protobuf:"bytes,4,opt,name=importer_addr,json=importerAddr,proto3" json:"importer_addr,omitempty"`
	TidbHost     string `protobuf:"bytes,5,opt,name=tidb_host,json=tidbHost,proto3" json:"tidb_host,omitempty"`
	TidbPort     int32  `protobuf:"varint,6,opt,name=tidb_port,json=tidbPort,proto3" json:"tidb_port,omitempty"`
	PdAddr       string `protobuf:"bytes,7,opt,name=pd_addr,json=pdAddr,proto3" json:"pd_addr,omitempty"`
	SortedKvDir  string `protobuf:"bytes,8,opt,name=sorted_kv_dir,json=sortedKvDir,proto3" json:"sorted_kv_dir,omitempty"`
	LightningVer string `protobuf:"bytes,9,opt,name=lightning_ver,json=lightningVer,proto3" json:"lightning_ver,omitempty"`
}

type TidbDBInfo struct {
	Name   string
	Tables map[string]*TidbTableInfo
}

type TidbTableInfo struct {
	ID   int64
	DB   string
	Name string
	Core *model.TableInfo
}