postgres

package
v0.0.0-rc2 Latest Latest
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This package is not in the latest version of its module.

 Go to latest Published: Sep 19, 2024 License: Apache-2.0 Imports: 81 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	PgSerializationFormatAuto   = PgSerializationFormat("")
	PgSerializationFormatText   = PgSerializationFormat("text")
	PgSerializationFormatBinary = PgSerializationFormat("binary")
)
View Source 
const (
	TableConsumerKeeper = abstract.TableConsumerKeeper // "__consumer_keeper"
	TableMoleFinder     = "__data_transfer_mole_finder"
	TableLSN            = abstract.TableLSN // "__data_transfer_lsn"
)
View Source 
const (
	PgDateFormat      = "2006-01-02"
	PgDatetimeFormat  = "2006-01-02 15:04:05Z07:00:00"
	PgTimestampFormat = "2006-01-02 15:04:05.999999Z07:00:00"
)
View Source 
const (
	SortAsc  SortOrder = "asc"
	SortDesc SortOrder = "desc"

	All DuplicatesPolicy = "all"

	PartitionsFilterPrefix = "__dt_resolved_hard:"
)
View Source 
const BufferLimit = 16 * humanize.MiByte
View Source 
const DatabaseTimeZone = abstract.PropertyKey("pg:database_timezone")
View Source 
const EnumAllValues = abstract.PropertyKey("pg:enum_all_values")
View Source 
const FakeParentPKeyStatusMessageCategory string = "fake_primary_key_parent"
View Source 
const PGDefaultQueryTimeout time.Duration = 30 * time.Minute
View Source 
const ProviderType = abstract.ProviderType("pg")
View Source 
const SelectCurrentLsnDelay = `select pg_wal_lsn_diff(pg_last_wal_replay_lsn(), $1);`
View Source 
const TimeZoneParameterStatusKey string = "TimeZone"

TimeZoneParameterStatusKey is the identifier of the PostgreSQL connection property containing time zone

Variables

View Source 
var (
	InitLSNSlotDDL = fmt.Sprintf(`
create table if not exists %%s.%s (
	slot_id   text primary key,
	iterator int,
	replicated_iterator int,
	last_iterator_update timestamp,
	last_replicated_update timestamp,
	committed_lsn text
);`, TableMoleFinder)

	MoveIteratorQuery = fmt.Sprintf(`
update %%s.%s set iterator = iterator + 1, last_iterator_update = now()
where slot_id = $1;`, TableMoleFinder)

	UpdateReplicatedQuery = fmt.Sprintf(`
update %%s.%s set replicated_iterator = $2, last_replicated_update = now()
where slot_id = $1 and replicated_iterator = $2 - 1;`, TableMoleFinder)

	SelectCommittedLSN = fmt.Sprintf(`
select committed_lsn from %%s.%s where slot_id = $1;`, TableMoleFinder)

	InsertIntoMoleFinder = fmt.Sprintf(`
insert into %%s.%s
	(slot_id, iterator, replicated_iterator, last_iterator_update, last_replicated_update, committed_lsn)
values
	($1, null, null, now(), now(), $2)
on conflict (slot_id) do update
	set
		replicated_iterator = null,
		iterator = null,
		last_iterator_update = now(),
		last_replicated_update = now(),
		committed_lsn = excluded.committed_lsn;`, TableMoleFinder)

	DeleteFromMoleFinder = fmt.Sprintf(`delete from %%s.%s where slot_id = $1`, TableMoleFinder)

	InsertIntoMoleFinder2 = fmt.Sprintf(`
insert into %%s.%s (slot_id, committed_lsn)
values ($1, $2)
on conflict (slot_id) do update set committed_lsn = excluded.committed_lsn;`, TableMoleFinder)

	SelectCommittedLSN2 = fmt.Sprintf(`
select committed_lsn, replicated_iterator from %%s.%s where slot_id = $1`, TableMoleFinder)

	SelectLsnForSlot = `select restart_lsn from pg_replication_slots where slot_name = $1;`
)
View Source 
var ErrBadPostgresHealth = errors.New("postgres health problem")
View Source 
var ErrConsumerLocked = errors.New("keeper: Consumer already locked")
View Source 
var (
	LSNTrackTableDDL = fmt.Sprintf(`
		create table if not exists %s(
			transfer_id text,
			schema_name text,
			table_name text,
			lsn bigint,
			primary key (transfer_id, schema_name, table_name)
		);`,
		TableLSN,
	)
)
View Source 
var (
	NoPrimaryKeyCode = coded.Register("postgres", "no_primary_key")
)
View Source 
var PGGlobalExclude = []abstract.TableID{
	{Namespace: "public", Name: "repl_mon"},
}

Functions

func ApplyCommands 

func ApplyCommands(commands []*pgDumpItem, transfer server.Transfer, registry metrics.Registry, types ...string) error

func ApplyPgDumpPostSteps 

func ApplyPgDumpPostSteps(pgdump []*pgDumpItem, transfer *server.Transfer, registry metrics.Registry) error

ApplyPgDumpPostSteps takes the given dump and applies post-steps defined in transfer source ONLY for homogenous PG-PG transfers. It also logs its actions

func ApplyPgDumpPreSteps 

func ApplyPgDumpPreSteps(pgdump []*pgDumpItem, transfer *server.Transfer, registry metrics.Registry) error

ApplyPgDumpPreSteps takes the given dump and applies pre-steps defined in transfer source ONLY for homogenous PG-PG transfers. It also logs its actions

func BeginTx 

func BeginTx(ctx context.Context, conn *pgx.Conn, options pgx.TxOptions, lgr log.Logger) (pgx.Tx, *util.Rollbacks, error)

BeginTx starts a transaction for the given pool with the given options and automatically composes sufficient rollback object.

func BeginTxWithSnapshot 

func BeginTxWithSnapshot(ctx context.Context, conn *pgx.Conn, options pgx.TxOptions, snapshot string, lgr log.Logger) (pgx.Tx, *util.Rollbacks, error)

BeginTxWithSnapshot starts a transaction at the given connection with the given snapshot and automatically composes a sufficient rollback object.

If the source database does not support SET TRANSACTION SNAPSHOT or the given snapshot identifier is an empty string, a transaction without snapshot is started automatically.

func BuildColSchemaArrayElement 

func BuildColSchemaArrayElement(colSchema abstract.ColSchema) abstract.ColSchema

func CalculatePartCount 

func CalculatePartCount(totalSize, desiredPartSize, partCountLimit uint64) uint64

func ClearOriginalType 

func ClearOriginalType(pgType string) string

func CreateReplicationSlot 

func CreateReplicationSlot(src *PgSource) error

func CreateSchemaQueryOptional 

func CreateSchemaQueryOptional(fullTableName string) string

CreateSchemaQueryOptional returns a query to create schema if it is absent. May return empty string, in which case schema must not be created. Full table name may contain quotes in schema name, which are removed.

func CreateTableQuery 

func CreateTableQuery(fullTableName string, schema []abstract.ColSchema) (string, error)

func CurrentTxStartTime 

func CurrentTxStartTime(ctx context.Context, conn *pgx.Conn) (time.Time, error)

CurrentTxStartTime returns the start time of the current transaction at the given connection. If there is no active transaction, current time of the database is returned.

func DaterangeToString 

func DaterangeToString(t []time.Time) string

func DropReplicationSlot 

func DropReplicationSlot(src *PgSource) error

func ExtractPgDumpSchema 

func ExtractPgDumpSchema(transfer *server.Transfer) ([]*pgDumpItem, error)

ExtractPgDumpSchema returns the dump ONLY for homogenous PG-PG transfers. It also logs its actions

func FallbackBitAsBytes 

func FallbackBitAsBytes(item *abstract.ChangeItem) (*abstract.ChangeItem, error)

FallbackBitAsBytes implements backward compatibility for https://st.yandex-team.ru/TM-5445#640b22b5af0c626bd522d179

WARNING: this fallback violates type strictness!

func FallbackNotNullAsNull 

func FallbackNotNullAsNull(ci *abstract.ChangeItem) (*abstract.ChangeItem, error)

func FallbackTimestampToUTC 

func FallbackTimestampToUTC(item *abstract.ChangeItem) (*abstract.ChangeItem, error)

FallbackTimestampToUTC implements https://st.yandex-team.ru/TM-5092

func GetArrElemTypeDescr 

func GetArrElemTypeDescr(originalType string) string

func GetCurrentStateOfSequence 

func GetCurrentStateOfSequence(ctx context.Context, conn *pgx.Conn, sequenceID abstract.TableID) (lastValue int64, isCalled bool, err error)

func GetDeleteFromMoleFinder 

func GetDeleteFromMoleFinder(schema string) string

func GetInitLSNSlotDDL 

func GetInitLSNSlotDDL(schema string) string

func GetInsertIntoMoleFinder 

func GetInsertIntoMoleFinder(schema string) string

func GetInsertIntoMoleFinder2 

func GetInsertIntoMoleFinder2(schema string) string

func GetMoveIteratorQuery 

func GetMoveIteratorQuery(schema string) string

func GetPropertyEnumAllValues 

func GetPropertyEnumAllValues(in *abstract.ColSchema) []string

func GetSelectCommittedLSN 

func GetSelectCommittedLSN(schema string) string

func GetSelectCommittedLSN2 

func GetSelectCommittedLSN2(schema string) string

func GetUpdateReplicatedQuery 

func GetUpdateReplicatedQuery(schema string) string

func HstoreToJSON 

func HstoreToJSON(colVal string) (string, error)

func HstoreToMap 

func HstoreToMap(colVal string) (map[string]interface{}, error)

func IsKeyword 

func IsKeyword(name string) bool

Returns whether name is a keyword or not according to a well-known keywords list. See https://www.postgresql.org/docs/current/sql-keywords-appendix.html

func IsPKeyCheckError 

func IsPKeyCheckError(err error) bool

func IsPgError 

func IsPgError(err error, code PgErrorCode) bool

func IsPgTypeTimeWithTimeZone 

func IsPgTypeTimeWithTimeZone(originalType string) bool

func IsPgTypeTimeWithTimeZoneUnprefixed 

func IsPgTypeTimeWithTimeZoneUnprefixed(in string) bool

func IsPgTypeTimeWithoutTimeZone 

func IsPgTypeTimeWithoutTimeZone(originalType string) bool

func IsPgTypeTimeWithoutTimeZoneUnprefixed 

func IsPgTypeTimeWithoutTimeZoneUnprefixed(in string) bool

func IsPgTypeTimestampWithTimeZone 

func IsPgTypeTimestampWithTimeZone(originalType string) bool

func IsPgTypeTimestampWithTimeZoneUnprefixed 

func IsPgTypeTimestampWithTimeZoneUnprefixed(in string) bool

func IsPgTypeTimestampWithoutTimeZone 

func IsPgTypeTimestampWithoutTimeZone(originalType string) bool

func IsPgTypeTimestampWithoutTimeZoneUnprefixed 

func IsPgTypeTimestampWithoutTimeZoneUnprefixed(in string) bool

func IsUserDefinedType 

func IsUserDefinedType(col *abstract.ColSchema) bool

func JSONToHstore 

func JSONToHstore(in string) (string, error)

func KeeperDDL 

func KeeperDDL(schema string) string

func ListWithCommaSingleQuoted 

func ListWithCommaSingleQuoted(values []string) string

func LockQuery 

func LockQuery(t abstract.TableID, mode PGTableLockMode) string

func MakeConnConfigFromSink 

func MakeConnConfigFromSink(lgr log.Logger, params PgSinkParams) (*pgx.ConnConfig, error)

func MakeConnConfigFromSrc 

func MakeConnConfigFromSrc(lgr log.Logger, pgSrc *PgSource) (*pgx.ConnConfig, error)

func MakeConnConfigFromStorage 

func MakeConnConfigFromStorage(lgr log.Logger, storage *PgStorageParams) (*pgx.ConnConfig, error)

func MakeConnPoolFromDst 

func MakeConnPoolFromDst(pgDst *PgDestination, lgr log.Logger) (*pgxpool.Pool, error)

func MakeConnPoolFromSrc 

func MakeConnPoolFromSrc(pgSrc *PgSource, lgr log.Logger) (*pgxpool.Pool, error)

func MakeInitDataTypes 

func MakeInitDataTypes(options ...DataTypesOption) func(ctx context.Context, conn *pgx.Conn) error

func MakeSetSQL 

func MakeSetSQL(key string, value string) string

func MinusToBC 

func MinusToBC(v string) string

MinusToBC checks if the given string starts with a minus and if so, trims it and adds a "BC" suffix

func New 

func New(lgr log.Logger, registry metrics.Registry, cp coordinator.Coordinator, transfer *server.Transfer) providers.Provider

func NewPgConnPool 

func NewPgConnPool(connConfig *pgx.ConnConfig, lgr log.Logger, dataTypesOptions ...DataTypesOption) (*pgxpool.Pool, error)

func NewPgConnPoolConfig 

func NewPgConnPoolConfig(ctx context.Context, poolConfig *pgxpool.Config) (*pgxpool.Pool, error)

NewPgConnPoolConfig creates a connection pool. It provides built-in timeouts to limit the duration of connection attempts

func NewPollingPublisher 

func NewPollingPublisher(
	version PgVersion,
	conn *pgxpool.Pool,
	slot AbstractSlot,
	registry *stats.SourceStats,
	cfg *PgSource,
	objects *server.DataObjects,
	transferID string,
	lgr log.Logger,
	cp coordinator.Coordinator,
) (abstract.Source, error)

func NewReplicationPublisher 

func NewReplicationPublisher(version PgVersion, replConn *mutexedPgConn, connPool *pgxpool.Pool, slot AbstractSlot, stats *stats.SourceStats, source *PgSource, transferID string, lgr log.Logger, cp coordinator.Coordinator, objects *server.DataObjects) (abstract.Source, error)

func NewSink 

func NewSink(lgr log.Logger, transferID string, config PgSinkParams, mtrcs metrics.Registry) (abstract.Sinker, error)

func NewSinkWithPool 

func NewSinkWithPool(ctx context.Context, lgr log.Logger, transferID string, config PgSinkParams, mtrcs metrics.Registry, pool *pgxpool.Pool) (abstract.Sinker, error)

func NewSourceWrapper 

func NewSourceWrapper(src *PgSource, transferID string, objects *server.DataObjects, lgr log.Logger, registry *stats.SourceStats, cp coordinator.Coordinator) (abstract.Source, error)

func ParseLsn 

func ParseLsn(lsn string) uint64

func PgTypeToYTType 

func PgTypeToYTType(pgType string) schema.Type

func PostgresDumpConnString 

func PostgresDumpConnString(src *PgSource) (string, server.SecretString, error)

func ReadQuery 

func ReadQuery(t *abstract.TableDescription, columns string) string

func Represent 

func Represent(val interface{}, colSchema abstract.ColSchema) (string, error)

func RepresentWithCast 

func RepresentWithCast(v interface{}, colSchema abstract.ColSchema) (string, error)

func RollbackFuncForPgxTx 

func RollbackFuncForPgxTx(ctx context.Context, tx pgx.Tx, lgr log.Logger) func()

RollbackFuncForPgxTx returns a function which ROLLBACKs the given `pgx.Tx` and if an error happens, logs it with the given logger at WARNING level

func RowCount 

func RowCount(ctx context.Context, conn *pgx.Conn, table *abstract.TableDescription) (uint64, error)

RowCount queries the storage and returns the exact number of rows in the given table

func RunSlotMonitor 

func RunSlotMonitor(ctx context.Context, pgSrc *PgSource, registry metrics.Registry) (abstract.SlotKiller, <-chan error, error)

func Sanitize 

func Sanitize(identifier string) string

Sanitize sanitizes the given identifier so that it can be used safely in queries to PostgreSQL. Note that the input cannot contain multiple identifiers (e.g., `schema.table` is not a valid input).

func SetInitialState 

func SetInitialState(tables []abstract.TableDescription, incrementalTables []abstract.IncrementalTable)

func TableName 

func TableName(t *abstract.TableDescription) string

func TimeWithTimeZoneToTime 

func TimeWithTimeZoneToTime(val string) (time.Time, error)

TimeWithTimeZoneToTime converts the given (valid) PostgreSQL TIME WITH TIME ZONE into a time.Time whose time zone and time are set to valid values All resulting time.Times are guaranteed to be properly comparable among themselves. This implies they are all based on the same date.

func UnwrapArrayElement 

func UnwrapArrayElement(in string) string

func VerifyPostgresTables 

func VerifyPostgresTables(src *PgSource, transfer *server.Transfer, lgr log.Logger) error

func VerifyPostgresTablesNames 

func VerifyPostgresTablesNames(tables []string) error

func WhereClause 

func WhereClause(filter abstract.WhereStatement) string

func WithLogger 

func WithLogger(connConfig *pgx.ConnConfig, lgr log.Logger) *pgx.ConnConfig

Types

type AbstractSlot 

type AbstractSlot interface {
	Init(sinker abstract.AsyncSink) error
	Exist() (bool, error)
	Close()
	Create() error
	Suicide() error
}

func NewLsnTrackedSlot 

func NewLsnTrackedSlot(pool *pgxpool.Pool, logger log.Logger, src *PgSource) AbstractSlot

func NewNotTrackedSlot 

func NewNotTrackedSlot(pool *pgxpool.Pool, logger log.Logger, src *PgSource) AbstractSlot

func NewSlot 

func NewSlot(pool *pgxpool.Pool, logger log.Logger, src *PgSource) (AbstractSlot, error)

type ChangeItemsFetcher 

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

ChangeItemsFetcher consolidates multiple objects (of which most important is pgx.Rows) into a single one, providing bufferized fetching and parsing of rows from a postgres source

func NewChangeItemsFetcher 

func NewChangeItemsFetcher(rows pgx.Rows, conn *pgx.Conn, template abstract.ChangeItem, sourceStats *stats.SourceStats) *ChangeItemsFetcher

NewChangeItemsFetcher constructs minimal working fetcher. ChangeItems fetched are shallow copies of the template except for ColumnValues - these are filled by the fetcher. The sequence of ColumnValues, ColSchemas (in TableSchema) and rows.FieldDescriptions() MUST BE THE SAME.

func (*ChangeItemsFetcher) Fetch 

func (f *ChangeItemsFetcher) Fetch() (items []abstract.ChangeItem, err error)

func (*ChangeItemsFetcher) MaybeHasMore 

func (f *ChangeItemsFetcher) MaybeHasMore() bool

func (*ChangeItemsFetcher) Sniffer 

func (f *ChangeItemsFetcher) Sniffer() (items []abstract.ChangeItem, err error)

Sniffer you may replace Fetch with Sniffer to get raw data.

func (*ChangeItemsFetcher) WithLimitBytes 

func (f *ChangeItemsFetcher) WithLimitBytes(limitBytes server.BytesSize) *ChangeItemsFetcher

WithLimitBytes accepts 0 to disable limit

func (*ChangeItemsFetcher) WithLimitCount 

func (f *ChangeItemsFetcher) WithLimitCount(limitCount int) *ChangeItemsFetcher

func (*ChangeItemsFetcher) WithLogger 

func (f *ChangeItemsFetcher) WithLogger(logger log.Logger) *ChangeItemsFetcher

func (*ChangeItemsFetcher) WithUnmarshallerData 

func (f *ChangeItemsFetcher) WithUnmarshallerData(data UnmarshallerData) *ChangeItemsFetcher

type Config 

type Config struct {
	config.DBConfig
}

type ConnectionParams 

type ConnectionParams struct {
	Host           string
	Port           uint16
	Database       string
	User           string
	Password       model.SecretString
	HasTLS         bool
	CACertificates string
	ClusterID      string
}

func GetConnParamsFromSrc 

func GetConnParamsFromSrc(lgr log.Logger, src *PgSource) (*ConnectionParams, error)

type DBFlavour 

type DBFlavour interface {
	PgClassFilter() string
	PgClassRelsOnlyFilter() string
	// ListSchemaQuery returns a query with TWO placeholders if withSpecificTable is true; with ZERO placeholders otherwise
	ListSchemaQuery(excludeViews bool, withSpecificTable bool, forbiddenSchemas []string, forbiddenTables []string) string
	// ListTablesQuery returns a query with zero placeholders
	ListTablesQuery(excludeViews bool, forbiddenSchemas []string, forbiddenTables []string) string
}

type DataTypesOption 

type DataTypesOption interface {
	// contains filtered or unexported methods
}

go-sumtype:decl DataTypesOption

type Date 

type Date struct {
	pgtype.Date
}

func NewDate 

func NewDate() *Date

NewDate constructs a DATE representation which supports BC years

TODO: remove this when https://st.yandex-team.ru/TM-5127 is done

func (*Date) DecodeText 

func (t *Date) DecodeText(ci *pgtype.ConnInfo, src []byte) error

func (*Date) HomoValue 

func (t *Date) HomoValue() any

func (*Date) Value 

func (t *Date) Value() (driver.Value, error)

type DefaultDataType 

type DefaultDataType struct{ pgtype.Value }

The Go type for PostgreSQL types of which pgx driver is unaware. Default is *pgx.GenericText. The implementation type must be a pointer (this is required by pgx). May be nil pointer.

type DuplicatesPolicy 

type DuplicatesPolicy string

type FieldDescription 

type FieldDescription struct {
	Name                 string
	TableOID             uint32
	TableAttributeNumber uint16
	DataTypeOID          uint32
	DataTypeSize         int16
	TypeModifier         int32
	Format               int16
}

type GenericArray 

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

GenericArray is based on ArrayType https://github.com/doublecloud/transfer/arc_vcs/vendor/github.com/jackc/pgtype/array_type.go?rev=r8263453#L15

func NewGenericArray 

func NewGenericArray(logger log.Logger, typeName string, elementOID pgtype.OID, newElement func() (pgtype.Value, error)) (*GenericArray, error)

func (*GenericArray) AssignTo 

func (ga *GenericArray) AssignTo(_ interface{}) error

func (*GenericArray) DecodeBinary 

func (ga *GenericArray) DecodeBinary(ci *pgtype.ConnInfo, src []byte) error

func (*GenericArray) DecodeText 

func (ga *GenericArray) DecodeText(ci *pgtype.ConnInfo, src []byte) error

func (*GenericArray) EncodeBinary 

func (ga *GenericArray) EncodeBinary(ci *pgtype.ConnInfo, buf []byte) ([]byte, error)

func (*GenericArray) EncodeText 

func (ga *GenericArray) EncodeText(ci *pgtype.ConnInfo, buf []byte) ([]byte, error)

func (*GenericArray) ExtractValue 

func (ga *GenericArray) ExtractValue(connInfo *pgtype.ConnInfo) (interface{}, error)

func (*GenericArray) Get 

func (ga *GenericArray) Get() interface{}

func (*GenericArray) GetValue 

func (ga *GenericArray) GetValue(connInfo *pgtype.ConnInfo) (interface{}, error)

func (*GenericArray) NewTypeValue 

func (ga *GenericArray) NewTypeValue() pgtype.Value

func (*GenericArray) NewTypeValueImpl 

func (ga *GenericArray) NewTypeValueImpl() *GenericArray

func (*GenericArray) Scan 

func (ga *GenericArray) Scan(_ interface{}) error

func (*GenericArray) Set 

func (ga *GenericArray) Set(interface{}) error

func (*GenericArray) TypeName 

func (ga *GenericArray) TypeName() string

func (*GenericArray) Unpack 

func (ga *GenericArray) Unpack(connInfo *pgtype.ConnInfo) (*util.XDArray, error)

func (*GenericArray) Value 

func (ga *GenericArray) Value() (driver.Value, error)

type Keeper 

type Keeper struct {
	CloseSign chan bool
	// contains filtered or unexported fields
}

func NewKeeper 

func NewKeeper(conn *pgxpool.Pool, logger log.Logger, schema string) (*Keeper, error)

func (*Keeper) Init 

func (k *Keeper) Init(sink abstract.AsyncSink) error

func (*Keeper) Lock 

func (k *Keeper) Lock(consumer string) (chan bool, error)

func (*Keeper) Stop 

func (k *Keeper) Stop()

type LsnTrackedSlot 

type LsnTrackedSlot struct {
	Conn *pgxpool.Pool
	// contains filtered or unexported fields
}

func (*LsnTrackedSlot) CheckMonotonic 

func (l *LsnTrackedSlot) CheckMonotonic(ci abstract.ChangeItem) (bool, error)

func (*LsnTrackedSlot) Close 

func (l *LsnTrackedSlot) Close()

func (*LsnTrackedSlot) Create 

func (l *LsnTrackedSlot) Create() error

func (*LsnTrackedSlot) Exist 

func (l *LsnTrackedSlot) Exist() (bool, error)

func (*LsnTrackedSlot) Init 

func (l *LsnTrackedSlot) Init(sink abstract.AsyncSink) error

func (*LsnTrackedSlot) Move 

func (l *LsnTrackedSlot) Move(lsn string) error

func (*LsnTrackedSlot) Run 

func (l *LsnTrackedSlot) Run()

func (*LsnTrackedSlot) Suicide 

func (l *LsnTrackedSlot) Suicide() error

func (*LsnTrackedSlot) UpdateReplicated 

func (l *LsnTrackedSlot) UpdateReplicated(iter int, lsn uint64) error

type Metrics 

type Metrics struct{ metrics.Registry }

type OldKeysType 

type OldKeysType struct {
	abstract.OldKeysType
	KeyTypeOids []pgtype.OID `json:"keytypeoids"`
}

type PGTableLockMode 

type PGTableLockMode string
const (
	AccessShareLockMode          PGTableLockMode = "ACCESS SHARE"
	RowShareLockMode             PGTableLockMode = "ROW SHARE"
	RowExclusiveLockMode         PGTableLockMode = "ROW EXCLUSIVE"
	ShareUpdateExclusiveLockMode PGTableLockMode = "SHARE UPDATE EXCLUSIVE"
	ShareLockMode                PGTableLockMode = "SHARE"
	ShareRowExclusiveLockMode    PGTableLockMode = "SHARE ROW EXCLUSIVE"
	ExclusiveLockMode            PGTableLockMode = "EXCLUSIVE"
	AccessExclusiveLockMode      PGTableLockMode = "ACCESS EXCLUSIVE"
)

type PgDestination 

type PgDestination struct {
	// oneof
	ClusterID string `json:"Cluster"`
	Host      string // legacy field for back compatibility; for now, we are using only 'Hosts' field
	Hosts     []string

	Database               string `json:"Name"`
	User                   string
	Password               server.SecretString
	Port                   int
	TLSFile                string
	MaintainTables         bool
	AllowDuplicates        bool
	LoozeMode              bool
	IgnoreUniqueConstraint bool
	Tables                 map[string]string
	TransformerConfig      map[string]string
	SubNetworkID           string
	SecurityGroupIDs       []string
	CopyUpload             bool // THIS IS NOT PARAMETER. If you set it on endpoint into true/false - nothing happened. It's workaround, this flag is set by common code (Activate/UploadTable) automatically. You have not options to turn-off CopyUpload behaviour.
	PerTransactionPush     bool
	Cleanup                server.CleanupType
	BatchSize              int // deprecated: use BufferTriggingSize instead
	BufferTriggingSize     uint64
	BufferTriggingInterval time.Duration
	QueryTimeout           time.Duration
	DisableSQLFallback     bool
	ConnectionID           string
}

func (*PgDestination) AllHosts 

func (d *PgDestination) AllHosts() []string

AllHosts - function to move from legacy 'Host' into modern 'Hosts'

func (*PgDestination) BuffererConfig 

func (d *PgDestination) BuffererConfig() bufferer.BuffererConfig

func (*PgDestination) CleanupMode 

func (d *PgDestination) CleanupMode() server.CleanupType

func (*PgDestination) FillDependentFields 

func (d *PgDestination) FillDependentFields(transfer *server.Transfer)

func (*PgDestination) GetConnectionID 

func (d *PgDestination) GetConnectionID() string

func (*PgDestination) GetProviderType 

func (d *PgDestination) GetProviderType() abstract.ProviderType

func (*PgDestination) HasTLS 

func (d *PgDestination) HasTLS() bool

func (PgDestination) IsDestination 

func (PgDestination) IsDestination()

func (*PgDestination) MDBClusterID 

func (d *PgDestination) MDBClusterID() string

func (*PgDestination) ReliesOnSystemTablesTransferring 

func (d *PgDestination) ReliesOnSystemTablesTransferring() bool

func (*PgDestination) ToSinkParams 

func (d *PgDestination) ToSinkParams() PgDestinationWrapper

func (*PgDestination) ToStorageParams 

func (d *PgDestination) ToStorageParams() *PgStorageParams

func (*PgDestination) Transformer 

func (d *PgDestination) Transformer() map[string]string

func (*PgDestination) Validate 

func (d *PgDestination) Validate() error

func (*PgDestination) WithDefaults 

func (d *PgDestination) WithDefaults()

type PgDestinationWrapper 

type PgDestinationWrapper struct {
	Model *PgDestination
}

func (PgDestinationWrapper) AllHosts 

func (d PgDestinationWrapper) AllHosts() []string

func (PgDestinationWrapper) CleanupMode 

func (d PgDestinationWrapper) CleanupMode() server.CleanupType

func (PgDestinationWrapper) ClusterID 

func (d PgDestinationWrapper) ClusterID() string

func (PgDestinationWrapper) ConnectionID 

func (d PgDestinationWrapper) ConnectionID() string

func (PgDestinationWrapper) CopyUpload 

func (d PgDestinationWrapper) CopyUpload() bool

func (PgDestinationWrapper) Database 

func (d PgDestinationWrapper) Database() string

func (PgDestinationWrapper) DisableSQLFallback 

func (d PgDestinationWrapper) DisableSQLFallback() bool

func (PgDestinationWrapper) HasTLS 

func (d PgDestinationWrapper) HasTLS() bool

func (PgDestinationWrapper) IgnoreUniqueConstraint 

func (d PgDestinationWrapper) IgnoreUniqueConstraint() bool

func (PgDestinationWrapper) LoozeMode 

func (d PgDestinationWrapper) LoozeMode() bool

func (PgDestinationWrapper) MaintainTables 

func (d PgDestinationWrapper) MaintainTables() bool

func (PgDestinationWrapper) Password 

func (d PgDestinationWrapper) Password() string

func (PgDestinationWrapper) PerTransactionPush 

func (d PgDestinationWrapper) PerTransactionPush() bool

func (PgDestinationWrapper) Port 

func (d PgDestinationWrapper) Port() int

func (PgDestinationWrapper) QueryTimeout 

func (d PgDestinationWrapper) QueryTimeout() time.Duration

func (PgDestinationWrapper) TLSFile 

func (d PgDestinationWrapper) TLSFile() string

func (PgDestinationWrapper) Tables 

func (d PgDestinationWrapper) Tables() map[string]string

func (PgDestinationWrapper) User 

func (d PgDestinationWrapper) User() string

type PgDumpSteps 

type PgDumpSteps struct {
	Table, PrimaryKey, View, Sequence         bool
	SequenceOwnedBy, Rule, Type               bool
	Constraint, FkConstraint, Index, Function bool
	Collation, Trigger, Policy, Cast          bool
	Default                                   bool
	MaterializedView                          bool
	SequenceSet                               *bool
	TableAttach                               bool
	IndexAttach                               bool
}

func DefaultPgDumpPostSteps 

func DefaultPgDumpPostSteps() *PgDumpSteps

func DefaultPgDumpPreSteps 

func DefaultPgDumpPreSteps() *PgDumpSteps

func (*PgDumpSteps) AnyStepIsTrue 

func (p *PgDumpSteps) AnyStepIsTrue() bool

func (*PgDumpSteps) List 

func (p *PgDumpSteps) List() []string

type PgErrorCode 

type PgErrorCode string
const (
	ErrcUniqueViolation              PgErrorCode = "23505"
	ErrcWrongObjectType              PgErrorCode = "42809"
	ErrcRelationDoesNotExists        PgErrorCode = "42P01"
	ErrcSchemaDoesNotExists          PgErrorCode = "3F000"
	ErrcObjectNotInPrerequisiteState PgErrorCode = "55000"
	ErrcInvalidPassword              PgErrorCode = "28P01"
	ErrcInvalidAuthSpec              PgErrorCode = "28000"
)

PostgreSQL error codes from https://www.postgresql.org/docs/12/errcodes-appendix.html

type PgObjectType 

type PgObjectType string
const (
	Table            PgObjectType = "TABLE"
	TableAttach      PgObjectType = "TABLE_ATTACH"
	PrimaryKey       PgObjectType = "PRIMARY_KEY"
	View             PgObjectType = "VIEW"
	Sequence         PgObjectType = "SEQUENCE"
	SequenceSet      PgObjectType = "SEQUENCE_SET"
	SequenceOwnedBy  PgObjectType = "SEQUENCE_OWNED_BY"
	Rule             PgObjectType = "RULE"
	Type             PgObjectType = "TYPE"
	Constraint       PgObjectType = "CONSTRAINT"
	FkConstraint     PgObjectType = "FK_CONSTRAINT"
	Index            PgObjectType = "INDEX"
	IndexAttach      PgObjectType = "INDEX_ATTACH"
	Function         PgObjectType = "FUNCTION"
	Collation        PgObjectType = "COLLATION"
	Trigger          PgObjectType = "TRIGGER"
	Policy           PgObjectType = "POLICY"
	Cast             PgObjectType = "CAST"
	MaterializedView PgObjectType = "MATERIALIZED_VIEW"
)

func (PgObjectType) IsValid 

func (pot PgObjectType) IsValid() error

type PgSerializationFormat 

type PgSerializationFormat string

type PgSinkParams 

type PgSinkParams interface {
	ClusterID() string
	AllHosts() []string
	Port() int
	Database() string
	User() string
	Password() string
	HasTLS() bool
	TLSFile() string

	// MaintainTables
	// If true - on every batchInsert calls 'create schema...' + 'create table ...'
	// For now, it's not true on every running-transfer
	// It's for lb->pg delivery. Can be auto-derived
	// It's like legacy
	// private option
	MaintainTables() bool
	// PerTransactionPush
	// It's 'SaveTxBoundaries' from proto-spec
	PerTransactionPush() bool
	// LoozeMode
	// If 'true' - when error occurs, we are logging error, and return nil. So it's 'lose data if error'
	// private option
	LoozeMode() bool
	CleanupMode() server.CleanupType
	// Tables
	// It's altnames source->destination
	// private option
	Tables() map[string]string
	// CopyUpload
	// use mechanism 'CopyUpload' for inserts
	CopyUpload() bool
	// IgnoreUniqueConstraint
	// Ignore 'uniqueViolation' error - just go further
	// private option
	IgnoreUniqueConstraint() bool
	// QueryTimeout returns the timeout for query execution by this sink
	QueryTimeout() time.Duration
	// DisableSQLFallback returns true if the sink should never use SQL when copying snapshot and should always use "COPY FROM"
	DisableSQLFallback() bool
	ConnectionID() string
}

type PgSource 

type PgSource struct {
	// oneof
	ClusterID string `json:"Cluster"`
	Host      string // legacy field for back compatibility; for now, we are using only 'Hosts' field
	Hosts     []string

	Database                    string
	User                        string
	Password                    server.SecretString
	Port                        int
	DBTables                    []string
	BatchSize                   uint32 // BatchSize is a limit on the number of rows in the replication (not snapshot) source internal buffer
	SlotID                      string
	SlotByteLagLimit            int64
	TLSFile                     string
	KeeperSchema                string
	SubNetworkID                string
	SecurityGroupIDs            []string
	CollapseInheritTables       bool
	UsePolling                  bool
	ExcludedTables              []string
	IsHomo                      bool
	NoHomo                      bool // force hetero relations instead of homo-haram-stuff
	AutoActivate                bool
	PreSteps                    *PgDumpSteps
	PostSteps                   *PgDumpSteps
	UseFakePrimaryKey           bool
	IgnoreUserTypes             bool
	IgnoreUnknownTables         bool             // see: if table schema unknown - ignore it TM-3104 and TM-2934
	MaxBufferSize               server.BytesSize // Deprecated: is not used anymore
	ExcludeDescendants          bool             // Deprecated: is not used more, use CollapseInheritTables instead
	DesiredTableSize            uint64           // desired table part size for snapshot sharding
	SnapshotDegreeOfParallelism int              // desired table parts count for snapshot sharding
	EmitTimeTypes               bool             // Deprecated: is not used anymore

	DBLogEnabled bool   // force DBLog snapshot instead of common
	ChunkSize    uint64 // number of rows in chunk, this field needed for DBLog snapshot, if it is 0, it will be calculated automatically

	// Whether text or binary serialization format should be used when readeing
	// snapshot from PostgreSQL storage snapshot (see
	// https://www.postgresql.org/docs/current/protocol-overview.html#PROTOCOL-FORMAT-CODES).
	// If not specified (i.e. equal to PgSerializationFormatAuto), defaults to
	// "binary" for homogeneous pg->pg transfer, and to "text" in all other
	// cases. Binary is preferred for pg->pg transfers since we use CopyFrom
	// function from pgx driver and it requires all values to be binary
	// serializable.
	SnapshotSerializationFormat PgSerializationFormat
	ShardingKeyFields           map[string][]string
	PgDumpCommand               []string
	ConnectionID                string
}

func (*PgSource) AllHosts 

func (s *PgSource) AllHosts() []string

AllHosts - function to move from legacy 'Host' into modern 'Hosts'

func (*PgSource) AllIncludes 

func (s *PgSource) AllIncludes() []string

func (*PgSource) AuxTables 

func (s *PgSource) AuxTables() []string

func (*PgSource) ExcludeWithGlobals 

func (s *PgSource) ExcludeWithGlobals() []string

func (*PgSource) ExtraTransformers 

func (s *PgSource) ExtraTransformers(ctx context.Context, transfer *server.Transfer, registry metrics.Registry) ([]abstract.Transformer, error)

func (*PgSource) FillDependentFields 

func (s *PgSource) FillDependentFields(transfer *server.Transfer)

func (*PgSource) FulfilledIncludes 

func (s *PgSource) FulfilledIncludes(tID abstract.TableID) (result []string)

func (*PgSource) GetConnectionID 

func (s *PgSource) GetConnectionID() string

func (*PgSource) GetProviderType 

func (s *PgSource) GetProviderType() abstract.ProviderType

func (*PgSource) HasTLS 

func (s *PgSource) HasTLS() bool

func (*PgSource) Include 

func (s *PgSource) Include(tID abstract.TableID) bool

func (*PgSource) IsIncremental 

func (*PgSource) IsIncremental()

func (*PgSource) IsSource 

func (*PgSource) IsSource()

func (*PgSource) IsStrictSource 

func (*PgSource) IsStrictSource()

func (*PgSource) MDBClusterID 

func (s *PgSource) MDBClusterID() string

func (*PgSource) SupportsStartCursorValue 

func (*PgSource) SupportsStartCursorValue() bool

func (*PgSource) ToSinkParams 

func (s *PgSource) ToSinkParams() PgSourceWrapper

func (*PgSource) ToStorageParams 

func (s *PgSource) ToStorageParams(transfer *server.Transfer) *PgStorageParams

func (*PgSource) Validate 

func (s *PgSource) Validate() error

func (*PgSource) WithDefaults 

func (s *PgSource) WithDefaults()

type PgSourceWrapper 

type PgSourceWrapper struct {
	Model *PgSource
	// contains filtered or unexported fields
}

func (PgSourceWrapper) AllHosts 

func (d PgSourceWrapper) AllHosts() []string

func (PgSourceWrapper) CleanupMode 

func (d PgSourceWrapper) CleanupMode() server.CleanupType

func (PgSourceWrapper) ClusterID 

func (d PgSourceWrapper) ClusterID() string

func (PgSourceWrapper) ConnectionID 

func (d PgSourceWrapper) ConnectionID() string

func (PgSourceWrapper) CopyUpload 

func (d PgSourceWrapper) CopyUpload() bool

func (PgSourceWrapper) Database 

func (d PgSourceWrapper) Database() string

func (PgSourceWrapper) DisableSQLFallback 

func (d PgSourceWrapper) DisableSQLFallback() bool

func (PgSourceWrapper) HasTLS 

func (d PgSourceWrapper) HasTLS() bool

func (PgSourceWrapper) IgnoreUniqueConstraint 

func (d PgSourceWrapper) IgnoreUniqueConstraint() bool

func (PgSourceWrapper) LoozeMode 

func (d PgSourceWrapper) LoozeMode() bool

func (PgSourceWrapper) MaintainTables 

func (d PgSourceWrapper) MaintainTables() bool

func (PgSourceWrapper) Password 

func (d PgSourceWrapper) Password() string

func (PgSourceWrapper) PerTransactionPush 

func (d PgSourceWrapper) PerTransactionPush() bool

func (PgSourceWrapper) Port 

func (d PgSourceWrapper) Port() int

func (PgSourceWrapper) QueryTimeout 

func (d PgSourceWrapper) QueryTimeout() time.Duration

func (*PgSourceWrapper) SetMaintainTables 

func (d *PgSourceWrapper) SetMaintainTables(maintainTables bool)

func (PgSourceWrapper) TLSFile 

func (d PgSourceWrapper) TLSFile() string

func (PgSourceWrapper) Tables 

func (d PgSourceWrapper) Tables() map[string]string

func (PgSourceWrapper) User 

func (d PgSourceWrapper) User() string

type PgStorageParams 

type PgStorageParams struct {
	AllHosts                    []string // should be non-empty only one field: Hosts/ClusterID
	Port                        int
	User                        string
	Password                    string
	Database                    string
	ClusterID                   string // should be non-empty only one field: Hosts/ClusterID
	TLSFile                     string
	UseFakePrimaryKey           bool
	DBFilter                    []string
	IgnoreUserTypes             bool
	PreferReplica               bool // has the meaning only if ClusterID not empty. Choosing replica is implemented via mdb api. If set as 'true' - it expects you initialized dbaas.Initialize*Cloud
	ExcludeDescendants          bool
	DesiredTableSize            uint64
	SnapshotDegreeOfParallelism int
	ConnString                  string // used in greenplum
	TableFilter                 abstract.Includeable
	TryHostCACertificates       bool // will force SSL connection with host-provided SSL certificates
	UseBinarySerialization      bool // Whether binary serialization format should be used. Defaults to true in homogeneous pg->pg transfers.
	SlotID                      string
	ShardingKeyFields           map[string][]string
	ConnectionID                string
}

func (*PgStorageParams) HasTLS 

func (p *PgStorageParams) HasTLS() bool

func (*PgStorageParams) String 

func (p *PgStorageParams) String() string

func (*PgStorageParams) TLSConfigTemplate 

func (p *PgStorageParams) TLSConfigTemplate() (*tls.Config, error)

TLSConfigTemplate returns a TLS configuration template without ServerName set. It returns nil when a no-TLS connection is requested by the configuration.

type PgVersion 

type PgVersion struct {
	Is9x, Is10x, Is11x, Is12x, Is13x, Is14x bool
	Version                                 string
}

func NewPgVersion 

func NewPgVersion(version string) PgVersion

func ResolveVersion 

func ResolveVersion(pool *pgxpool.Pool) PgVersion

type Plugin 

type Plugin string

type PostgreSQLFlavour 

type PostgreSQLFlavour struct{}

func NewPostgreSQLFlavour 

func NewPostgreSQLFlavour() *PostgreSQLFlavour

func (*PostgreSQLFlavour) ListSchemaQuery 

func (f *PostgreSQLFlavour) ListSchemaQuery(excludeViews bool, withSpecificTable bool, forbiddenSchemas []string, forbiddenTables []string) string

func (*PostgreSQLFlavour) ListTablesQuery 

func (f *PostgreSQLFlavour) ListTablesQuery(excludeViews bool, forbiddenSchemas []string, forbiddenTables []string) string

func (*PostgreSQLFlavour) PgClassFilter 

func (f *PostgreSQLFlavour) PgClassFilter() string

func (*PostgreSQLFlavour) PgClassRelsOnlyFilter 

func (f *PostgreSQLFlavour) PgClassRelsOnlyFilter() string

type PostgresSlotKiller 

type PostgresSlotKiller struct {
	Slot AbstractSlot
}

func (*PostgresSlotKiller) KillSlot 

func (k *PostgresSlotKiller) KillSlot() error

type Provider 

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

func (*Provider) Activate 

func (p *Provider) Activate(ctx context.Context, task *server.TransferOperation, tables abstract.TableMap, callbacks providers.ActivateCallbacks) error

func (*Provider) Cleanup 

func (p *Provider) Cleanup(ctx context.Context, task *server.TransferOperation) error

func (*Provider) DBLogUpload 

func (p *Provider) DBLogUpload(src *PgSource, tables abstract.TableMap) error

func (*Provider) Deactivate 

func (p *Provider) Deactivate(ctx context.Context, task *server.TransferOperation) error

func (*Provider) DestinationSampleableStorage 

func (p *Provider) DestinationSampleableStorage() (abstract.SampleableStorage, error)

func (*Provider) Sink 

func (p *Provider) Sink(config middlewares.Config) (abstract.Sinker, error)

func (*Provider) Source 

func (p *Provider) Source() (abstract.Source, error)

func (*Provider) SourceSampleableStorage 

func (p *Provider) SourceSampleableStorage() (abstract.SampleableStorage, []abstract.TableDescription, error)

func (*Provider) Storage 

func (p *Provider) Storage() (abstract.Storage, error)

func (*Provider) Type 

func (p *Provider) Type() abstract.ProviderType

func (*Provider) Verify 

func (p *Provider) Verify(ctx context.Context) error

type SchemaExtractor 

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

func NewSchemaExtractor 

func NewSchemaExtractor() *SchemaExtractor

func (*SchemaExtractor) FindDependentViews 

func (e *SchemaExtractor) FindDependentViews(ctx context.Context, conn *pgx.Conn, tables abstract.TableMap) (map[abstract.TableID][]abstract.TableID, error)

func (*SchemaExtractor) LoadSchema 

func (e *SchemaExtractor) LoadSchema(ctx context.Context, conn *pgx.Conn, specificTable *abstract.TableID) (abstract.DBSchema, error)

LoadSchema returns a settings-customized schema(s) of table(s) in PostgreSQL

func (*SchemaExtractor) TablesList 

func (e *SchemaExtractor) TablesList(ctx context.Context, conn *pgx.Conn) ([]tableIDWithInfo, time.Time, error)

TablesList returns a list of basic information pieces about all tables in the given schema

func (*SchemaExtractor) WithExcludeViews 

func (e *SchemaExtractor) WithExcludeViews(excludeViews bool) *SchemaExtractor

func (*SchemaExtractor) WithFlavour 

func (e *SchemaExtractor) WithFlavour(flavour DBFlavour) *SchemaExtractor

func (*SchemaExtractor) WithForbiddenSchemas 

func (e *SchemaExtractor) WithForbiddenSchemas(forbiddenSchemas []string) *SchemaExtractor

func (*SchemaExtractor) WithForbiddenTables 

func (e *SchemaExtractor) WithForbiddenTables(forbiddenTables []string) *SchemaExtractor

func (*SchemaExtractor) WithLogger 

func (e *SchemaExtractor) WithLogger(logger log.Logger) *SchemaExtractor

func (*SchemaExtractor) WithUseFakePrimaryKey 

func (e *SchemaExtractor) WithUseFakePrimaryKey(useFakePrimaryKey bool) *SchemaExtractor

type SequenceInfo 

type SequenceInfo struct {
	SequenceID      abstract.TableID
	DependentTables []abstract.TableID
}

SequenceInfo is a description of a PostgreSQL sequence

type SequenceMap 

type SequenceMap map[abstract.TableID]*SequenceInfo

SequenceMap is a mapping of sequence identifiers to their descriptions

func ListSequencesWithDependants 

func ListSequencesWithDependants(ctx context.Context, conn *pgx.Conn, serviceSchema string) (SequenceMap, error)

ListSequencesWithDependants returns a mapping with sequence information.

This method executes CREATE FUNCTION and DROP FUNCTION statements.

type Slot 

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

func (*Slot) Close 

func (slot *Slot) Close()

func (*Slot) Create 

func (slot *Slot) Create() error

func (*Slot) Exist 

func (slot *Slot) Exist() (bool, error)

func (*Slot) Init 

func (slot *Slot) Init(sink abstract.AsyncSink) error

func (*Slot) Suicide 

func (slot *Slot) Suicide() error

func (*Slot) SuicideImpl 

func (slot *Slot) SuicideImpl() error

type SlotMonitor 

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

func NewSlotMonitor 

func NewSlotMonitor(conn *pgxpool.Pool, slotName string, slotDatabaseName string, metrics *stats.SourceStats, logger log.Logger) *SlotMonitor

NewSlotMonitor constructs a slot monitor, but does NOT start it.

The provided pool is NOT closed by the monitor. It is the caller's responsibility to manage the pool.

func (*SlotMonitor) Close 

func (m *SlotMonitor) Close()

func (*SlotMonitor) StartSlotMonitoring 

func (m *SlotMonitor) StartSlotMonitoring(maxSlotByteLag int64) <-chan error

type SnapshotKey 

type SnapshotKey string

func (SnapshotKey) String 

func (c SnapshotKey) String() string

type SnapshotState 

type SnapshotState struct {
	SnapshotLSN string
	SnapshotTS  int64
}

type SortOrder 

type SortOrder string

type Storage 

type Storage struct {
	Config *PgStorageParams
	Conn   *pgxpool.Pool

	IsHomo bool

	ForbiddenSchemas []string
	ForbiddenTables  []string
	Flavour          DBFlavour

	ShardedStateLSN string
	ShardedStateTS  time.Time
	// contains filtered or unexported fields
}

func NewStorage 

func NewStorage(config *PgStorageParams, opts ...StorageOpt) (*Storage, error)

func (*Storage) BeginPGSnapshot 

func (s *Storage) BeginPGSnapshot(ctx context.Context) error

Named BeginPGSnapshot to NOT match abstract.SnapshotableStorage

func (*Storage) BuildTypeMapping 

func (s *Storage) BuildTypeMapping(ctx context.Context) (TypeNameToOIDMap, error)

func (*Storage) Close 

func (s *Storage) Close()

func (*Storage) EndPGSnapshot 

func (s *Storage) EndPGSnapshot(ctx context.Context) error

Named EndPGSnapshot to NOT match abstract.SnapshotableStorage

func (*Storage) EstimateTableRowsCount 

func (s *Storage) EstimateTableRowsCount(table abstract.TableID) (uint64, error)

func (*Storage) ExactTableDescriptionRowsCount 

func (s *Storage) ExactTableDescriptionRowsCount(ctx context.Context, table abstract.TableDescription, timeout time.Duration) (uint64, error)

func (*Storage) ExactTableRowsCount 

func (s *Storage) ExactTableRowsCount(table abstract.TableID) (uint64, error)

func (*Storage) GetIncrementalState 

func (s *Storage) GetIncrementalState(ctx context.Context, incremental []abstract.IncrementalTable) ([]abstract.TableDescription, error)

func (*Storage) GetInheritedTables 

func (s *Storage) GetInheritedTables(ctx context.Context) (map[abstract.TableID]abstract.TableID, error)

func (*Storage) LoadQueryTable 

func (s *Storage) LoadQueryTable(ctx context.Context, tableQuery tablequery.TableQuery, pusher abstract.Pusher) error

func (*Storage) LoadRandomSample 

func (s *Storage) LoadRandomSample(table abstract.TableDescription, pusher abstract.Pusher) error

func (*Storage) LoadSampleBySet 

func (s *Storage) LoadSampleBySet(table abstract.TableDescription, keySet []map[string]interface{}, pusher abstract.Pusher) error

func (*Storage) LoadSchema 

func (s *Storage) LoadSchema() (abstract.DBSchema, error)

func (*Storage) LoadSchemaForTable 

func (s *Storage) LoadSchemaForTable(ctx context.Context, conn *pgx.Conn, table abstract.TableDescription) (*abstract.TableSchema, error)

func (*Storage) LoadTable 

func (s *Storage) LoadTable(ctx context.Context, table abstract.TableDescription, pusher abstract.Pusher) error

func (*Storage) LoadTopBottomSample 

func (s *Storage) LoadTopBottomSample(table abstract.TableDescription, pusher abstract.Pusher) error

func (*Storage) OrderedRead 

func (s *Storage) OrderedRead(
	t *abstract.TableDescription,
	schemas []abstract.ColSchema,
	sortOrder SortOrder,
	filter abstract.WhereStatement,
	duplicatesPolicy DuplicatesPolicy,
	excludeDescendants bool,
) string

func (*Storage) Ping 

func (s *Storage) Ping() error

func (*Storage) RunSlotMonitor 

func (s *Storage) RunSlotMonitor(ctx context.Context, serverSource interface{}, registry metrics.Registry) (abstract.SlotKiller, <-chan error, error)

func (*Storage) SetInitialState 

func (s *Storage) SetInitialState(tables []abstract.TableDescription, incrementalTables []abstract.IncrementalTable)

func (*Storage) SetLoadDescending 

func (s *Storage) SetLoadDescending(loadDescending bool)

func (*Storage) SetShardingContext 

func (s *Storage) SetShardingContext(shardedState []byte) error

func (*Storage) ShardTable 

func (s *Storage) ShardTable(ctx context.Context, table abstract.TableDescription) ([]abstract.TableDescription, error)

function 'ShardTable' tries to shard one table/view into parts (split task for snapshotting one table/view into parts): 

TableDescription -> []TableDescription

who can be sharded & who can't be sharded:

  • tables with non-empty 'Offset' - not sharded
  • tables with non-empty 'Filter' (dolivochki or ad-hoc upload_table) - sharded
  • views where filled explicitKeys - sharded

func (*Storage) ShardingContext 

func (s *Storage) ShardingContext() ([]byte, error)

func (*Storage) SnapshotLSN 

func (s *Storage) SnapshotLSN() string

func (*Storage) TableAccessible 

func (s *Storage) TableAccessible(table abstract.TableDescription) bool

func (*Storage) TableExists 

func (s *Storage) TableExists(table abstract.TableID) (bool, error)

func (*Storage) TableList 

func (s *Storage) TableList(filter abstract.IncludeTableList) (abstract.TableMap, error)

TableList in PostgreSQL returns a table map with schema

func (*Storage) TableSchema 

func (s *Storage) TableSchema(ctx context.Context, table abstract.TableID) (*abstract.TableSchema, error)

func (*Storage) TableSizeInBytes 

func (s *Storage) TableSizeInBytes(table abstract.TableID) (uint64, error)

func (*Storage) WorkersSnapshotState 

func (s *Storage) WorkersSnapshotState() *SnapshotState

type StorageOpt 

type StorageOpt interface {
	// contains filtered or unexported methods
}

go-sumtype:decl StorageOpt

func WithMetrics 

func WithMetrics(registry metrics.Registry) StorageOpt

func WithTypeMapping 

func WithTypeMapping(typeMapping TypeNameToOIDMap) StorageOpt

type TextDecoderAndValuerWithHomo 

type TextDecoderAndValuerWithHomo interface {
	pgtype.TextDecoder
	driver.Valuer
	abstract.HomoValuer
}

type Timestamp 

type Timestamp struct {
	pgtype.Timestamp
	// contains filtered or unexported fields
}

func NewTimestamp 

func NewTimestamp(tz *time.Location) *Timestamp

NewTimestamp constructs a TIMESTAMP WITHOUT TIME ZONE representation which supports BC years

TODO: this type must become significantly simpler after https://st.yandex-team.ru/TM-5127 is done

func (*Timestamp) DecodeText 

func (t *Timestamp) DecodeText(ci *pgtype.ConnInfo, src []byte) error

func (*Timestamp) HomoValue 

func (t *Timestamp) HomoValue() any

func (*Timestamp) Value 

func (t *Timestamp) Value() (driver.Value, error)

type Timestamptz 

type Timestamptz struct {
	pgtype.Timestamptz
}

func NewTimestamptz 

func NewTimestamptz() *Timestamptz

NewTimestamptz constructs a TIMESTAMP WITH TIME ZONE representation which supports BC years

TODO: remove this when https://st.yandex-team.ru/TM-5127 is done

func (*Timestamptz) DecodeText 

func (t *Timestamptz) DecodeText(ci *pgtype.ConnInfo, src []byte) error

func (*Timestamptz) HomoValue 

func (t *Timestamptz) HomoValue() any

func (*Timestamptz) Value 

func (t *Timestamptz) Value() (driver.Value, error)

type TypeFullName 

type TypeFullName struct {
	Namespace string // typnamespace from pg_type
	Name      string // typname from pg_type
}

Text representation of PostgreSQL type from pg_type catalog, opposed to OID: https://www.postgresql.org/docs/current/catalog-pg-type.html

type TypeMapping 

type TypeMapping struct{ TypeNameToOIDMap }

type TypeNameToOIDMap 

type TypeNameToOIDMap map[TypeFullName]pgtype.OID

type Unmarshaller 

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

Unmarshaller converts data from the PostgreSQL format to the Data Transfer format. The format differs for homogenous and heterogenous transfers, but the same unmarshaller is used in both cases.

func NewUnmarshaller 

func NewUnmarshaller(castData *UnmarshallerData, connInfo *pgtype.ConnInfo, schema *abstract.ColSchema, fieldDesc *pgproto3.FieldDescription) (*Unmarshaller, error)

func (*Unmarshaller) Cast 

func (c *Unmarshaller) Cast(input []byte) (any, error)

Cast consumes raw SELECT output and produces a valid ChangeItem.Value

type UnmarshallerData 

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

func MakeUnmarshallerData 

func MakeUnmarshallerData(isHomo bool, conn *pgx.Conn) UnmarshallerData

type Wal2JSONItem 

type Wal2JSONItem struct {
	ID             uint32               `json:"id" yson:"id"`
	LSN            uint64               `json:"nextlsn" yson:"nextlsn"`
	CommitTime     uint64               `json:"commitTime" yson:"commitTime"`
	Counter        int                  `json:"txPosition" yson:"txPosition"`
	Kind           abstract.Kind        `json:"kind" yson:"kind"`
	Schema         string               `json:"schema" yson:"schema"`
	Table          string               `json:"table" yson:"table"`
	PartID         string               `json:"part" yson:"-"`
	ColumnNames    []string             `json:"columnnames" yson:"columnnames"`
	ColumnValues   []interface{}        `json:"columnvalues,omitempty" yson:"columnvalues"`
	TableSchema    []abstract.ColSchema `json:"table_schema,omitempty" yson:"table_schema"`
	OldKeys        OldKeysType          `json:"oldkeys" yson:"oldkeys"`
	TxID           string               `json:"tx_id" yson:"-"`
	Query          string               `json:"query" yson:"-"`
	Size           abstract.EventSize   `json:"-" yson:"-"`
	ColumnTypeOIDs []pgtype.OID         `json:"columntypeoids"`
}

This is basically an abstract.ChangeItem, but with two additional fields: * columntypeoids * oldkeys.keytypeoids Note that historically abstract.ChangeItem's structure was exactly the same as the structure of objects we received from wal2json, since PostgreSQL was one of the first endpoints implemented in DataTransfer. Later ChangeItem had to encompass other databases and become "abstract". There is no point in adding any more PostgreSQL specifics into it, so we use Wal2JSONItem for parsing PostgreSQL changes from wal2json now.

type Wal2JsonParser 

type Wal2JsonParser struct {
	// contains filtered or unexported fields
}

func NewWal2JsonParser 

func NewWal2JsonParser() *Wal2JsonParser

func (*Wal2JsonParser) Close 

func (p *Wal2JsonParser) Close()

func (*Wal2JsonParser) Parse 

func (p *Wal2JsonParser) Parse(data []byte) (result []*Wal2JSONItem, err error)

type Worker 

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

func (*Worker) Run 

func (w *Worker) Run(sink abstract.AsyncSink) error

func (*Worker) Stop 

func (w *Worker) Stop()

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