github.com/treeverse/lakefs@v1.24.1-0.20240520134607-95648127bfb0/pkg/metastore/metastore.go

package metastore

import (
	"context"
	"strings"
	"time"

	"github.com/aws/aws-sdk-go-v2/service/glue/types"
	"github.com/davecgh/go-spew/spew"
	"github.com/treeverse/lakefs/pkg/logging"
)

const (
	// sparkSQLWorkaroundSuffix is a suffix added as a hack in Spark SQL, locations with this suffix are not used and should not be changed, Please refer to https://issues.apache.org/jira/browse/SPARK-15269 for more details.
	sparkSQLWorkaroundSuffix = "-__PLACEHOLDER__"
	// sparkSQLTableProviderKey  specifies the table is a Spark SQL data source table
	sparkSQLTableProviderKey    = "spark.sql.sources.provider"
	sparkSQLProviderLocationKey = "path"
)

func (m *Table) Update(ctx context.Context, db, table, serde string, setSymlink bool, transformLocation func(location string) (string, error), isSparkSQLTable, fixSparkPlaceHolder bool) error {
	log := logging.FromContext(ctx).WithFields(logging.Fields{
		"db":         db,
		"table":      table,
		"serde":      serde,
		"setSymlink": setSymlink,
	})
	if m.Sd == nil {
		m.Sd = &StorageDescriptor{}
	}
	m.DBName = db
	m.TableName = table
	err := m.Sd.Update(db, table, serde, setSymlink, transformLocation, isSparkSQLTable, fixSparkPlaceHolder)
	if err != nil {
		log.WithError(err).WithField("table", spew.Sdump(*m)).Error("Update table")
		return err
	}
	log.WithField("table", spew.Sdump(*m)).Debug("Update table")
	return nil
}

func (m *Table) isSparkSQLTable() (res bool) {
	_, res = m.Parameters[sparkSQLTableProviderKey]
	return
}

func (m *Partition) Update(ctx context.Context, db, table, serde string, setSymlink bool, transformLocation func(location string) (string, error), isSparkSQLTable, fixSparkPlaceHolder bool) error {
	log := logging.FromContext(ctx).WithFields(logging.Fields{
		"db":         db,
		"table":      table,
		"serde":      serde,
		"setSymlink": setSymlink,
	})
	if m.Sd == nil {
		m.Sd = &StorageDescriptor{}
	}
	if m.Sd.SerdeInfo == nil {
		m.Sd.SerdeInfo = &SerDeInfo{}
	}
	m.DBName = db
	m.TableName = table
	m.Sd.SerdeInfo.Name = serde
	if setSymlink {
		m.Sd.InputFormat = symlinkInputFormat
	}

	err := m.Sd.Update(db, table, serde, setSymlink, transformLocation, isSparkSQLTable, fixSparkPlaceHolder)
	if err != nil {
		log.WithError(err).WithField("table", spew.Sdump(*m)).Error("Update table")
		return err
	}
	log.WithField("table", spew.Sdump(*m)).Debug("Update table")
	return nil
}

func (m *StorageDescriptor) Update(db, table, serde string, setSymlink bool, transformLocation func(location string) (string, error), isSparkSQLTable, fixSparkPlaceHolder bool) error {
	if m.SerdeInfo == nil {
		m.SerdeInfo = &SerDeInfo{}
	}

	m.SerdeInfo.Name = serde

	if setSymlink {
		m.InputFormat = symlinkInputFormat
	}
	var err error
	if m.Location != "" && !(isSparkSQLTable && strings.HasSuffix(m.Location, sparkSQLWorkaroundSuffix)) {
		m.Location, err = transformLocation(m.Location)
	}
	if err != nil {
		return err
	}

	if isSparkSQLTable {
		// Table was created by Spark SQL, we should change the internal stored Spark SQL location
		if l, ok := m.SerdeInfo.Parameters[sparkSQLProviderLocationKey]; ok {
			updatedLocation, err := transformLocation(l)
			if err != nil {
				return err
			}
			m.SerdeInfo.Parameters[sparkSQLProviderLocationKey] = updatedLocation
			if fixSparkPlaceHolder && strings.HasSuffix(m.Location, sparkSQLWorkaroundSuffix) {
				m.Location = updatedLocation
			}
		}
	}
	return err
}

type Database struct {
	Name              string
	Description       string
	LocationURI       string
	Parameters        map[string]string
	HivePrivileges    interface{}
	OwnerName         *string
	HiveOwnerType     interface{}
	AWSTargetDatabase *types.DatabaseIdentifier
}

type Table struct {
	TableName                        string
	DBName                           string
	Owner                            string
	CreateTime                       int64
	LastAccessTime                   int64
	Retention                        int
	Sd                               *StorageDescriptor
	PartitionKeys                    []*FieldSchema
	Parameters                       map[string]string
	ViewOriginalText                 string
	ViewExpandedText                 string
	TableType                        string
	Temporary                        bool
	RewriteEnabled                   *bool
	AWSCreatedBy                     *string
	AWSDescription                   *string
	AWSIsRegisteredWithLakeFormation *bool
	AWSLastAnalyzedTime              *time.Time
	AWSTargetTable                   interface{}
	AWSUpdateTime                    *time.Time
	Privileges                       interface{}
}

type Partition struct {
	Values              []string
	DBName              string
	TableName           string
	CreateTime          int
	LastAccessTime      int
	Sd                  *StorageDescriptor
	Parameters          map[string]string
	AWSLastAnalyzedTime *time.Time
	Privileges          interface{}
}

type StorageDescriptor struct {
	Cols                   []*FieldSchema
	Location               string
	InputFormat            string
	OutputFormat           string
	Compressed             bool
	NumBuckets             int
	SerdeInfo              *SerDeInfo
	BucketCols             []string
	SortCols               []*Order
	Parameters             map[string]string
	SkewedInfo             *SkewedInfo
	StoredAsSubDirectories *bool
	AWSSchemaReference     interface{}
}

type SerDeInfo struct {
	Name             string
	SerializationLib string
	Parameters       map[string]string
}

type FieldSchema struct {
	Name    string
	Type    string
	Comment string
}

type Order struct {
	Col   string
	Order int
}

type SkewedInfo struct {
	SkewedColNames             []string
	SkewedColValues            [][]string
	AWSSkewedColValues         []string //
	SkewedColValueLocationMaps map[string]string
}

func (m Partition) Name() string {
	return strings.Join(m.Values, "-")
}