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arrow.go
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arrow.go
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package schema
import (
"fmt"
"strings"
"github.com/goccy/go-json"
"github.com/apache/arrow/go/v12/arrow"
"github.com/apache/arrow/go/v12/arrow/array"
"github.com/apache/arrow/go/v12/arrow/memory"
"github.com/cloudquery/plugin-sdk/v2/types"
)
const (
MetadataUnique = "cq:extension:unique"
MetadataPrimaryKey = "cq:extension:primary_key"
MetadataConstraintName = "cq:extension:constraint_name"
MetadataIncremental = "cq:extension:incremental"
MetadataTrue = "true"
MetadataFalse = "false"
MetadataTableName = "cq:table_name"
)
type FieldChange struct {
Type TableColumnChangeType
ColumnName string
Current arrow.Field
Previous arrow.Field
}
type MetadataFieldOptions struct {
PrimaryKey bool
Unique bool
}
type MetadataSchemaOptions struct {
TableName string
}
func NewSchemaMetadataFromOptions(opts MetadataSchemaOptions) arrow.Metadata {
keys := make([]string, 0)
values := make([]string, 0)
if opts.TableName != "" {
keys = append(keys, MetadataTableName)
values = append(values, opts.TableName)
}
return arrow.NewMetadata(keys, values)
}
func NewFieldMetadataFromOptions(opts MetadataFieldOptions) arrow.Metadata {
keys := make([]string, 0)
values := make([]string, 0)
if opts.PrimaryKey {
keys = append(keys, MetadataPrimaryKey)
values = append(values, MetadataTrue)
}
if opts.Unique {
keys = append(keys, MetadataUnique)
values = append(values, MetadataTrue)
}
return arrow.NewMetadata(keys, values)
}
func UnsetPk(f *arrow.Field) {
pkExist := false
keys := f.Metadata.Keys()
values := f.Metadata.Values()
for i, k := range keys {
if k == MetadataPrimaryKey {
values[i] = MetadataFalse
pkExist = true
break
}
}
if !pkExist {
keys = append(keys, MetadataPrimaryKey)
values = append(values, MetadataTrue)
}
f.Metadata = arrow.NewMetadata(keys, values)
}
func SetPk(f *arrow.Field) {
pkExist := false
keys := f.Metadata.Keys()
values := f.Metadata.Values()
for i, k := range keys {
if k == MetadataPrimaryKey {
values[i] = MetadataTrue
pkExist = true
break
}
}
if !pkExist {
keys = append(keys, MetadataPrimaryKey)
values = append(values, MetadataTrue)
}
f.Metadata = arrow.NewMetadata(keys, values)
}
func IsPk(f arrow.Field) bool {
pk, ok := f.Metadata.GetValue(MetadataPrimaryKey)
return ok && pk == MetadataTrue
}
func IsIncremental(s *arrow.Schema) bool {
val, ok := s.Metadata().GetValue(MetadataIncremental)
return ok && val == MetadataTrue
}
func IsUnique(f arrow.Field) bool {
pk, ok := f.Metadata.GetValue(MetadataUnique)
return ok && pk == MetadataTrue
}
func PrimaryKeyIndices(sc *arrow.Schema) []int {
var indices []int
for i, f := range sc.Fields() {
if IsPk(f) {
indices = append(indices, i)
}
}
return indices
}
func TableName(sc *arrow.Schema) string {
name, ok := sc.Metadata().GetValue(MetadataTableName)
if !ok {
return ""
}
return name
}
// Get changes return changes between two schemas
func GetSchemaChanges(target *arrow.Schema, source *arrow.Schema) []FieldChange {
var changes []FieldChange
for _, t := range target.Fields() {
sourceField, ok := source.FieldsByName(t.Name)
if !ok {
changes = append(changes, FieldChange{
Type: TableColumnChangeTypeAdd,
ColumnName: t.Name,
Current: t,
})
continue
}
if !t.Equal(sourceField[0]) {
changes = append(changes, FieldChange{
Type: TableColumnChangeTypeUpdate,
ColumnName: t.Name,
Current: t,
Previous: sourceField[0],
})
}
}
for _, s := range source.Fields() {
_, ok := target.FieldsByName(s.Name)
if !ok {
changes = append(changes, FieldChange{
Type: TableColumnChangeTypeRemove,
ColumnName: s.Name,
Previous: s,
})
}
}
return changes
}
func CQColumnToArrowField(col *Column) arrow.Field {
var typ arrow.DataType
metadata := make(map[string]string)
switch col.Type {
case TypeBool:
typ = arrow.FixedWidthTypes.Boolean
case TypeInt:
typ = arrow.PrimitiveTypes.Int64
case TypeFloat:
typ = arrow.PrimitiveTypes.Float64
case TypeUUID:
typ = types.ExtensionTypes.UUID
case TypeString:
typ = arrow.BinaryTypes.String
case TypeByteArray:
typ = arrow.BinaryTypes.Binary
case TypeStringArray:
typ = arrow.ListOf(arrow.BinaryTypes.String)
case TypeIntArray:
typ = arrow.ListOf(arrow.PrimitiveTypes.Int64)
case TypeTimestamp:
typ = arrow.FixedWidthTypes.Timestamp_us
case TypeJSON:
typ = types.ExtensionTypes.JSON
case TypeUUIDArray:
typ = arrow.ListOf(types.ExtensionTypes.UUID)
case TypeInet:
typ = types.ExtensionTypes.Inet
case TypeInetArray:
typ = arrow.ListOf(types.ExtensionTypes.Inet)
case TypeCIDR:
typ = types.ExtensionTypes.Inet
case TypeCIDRArray:
typ = arrow.ListOf(types.ExtensionTypes.Inet)
case TypeMacAddr:
typ = types.ExtensionTypes.Mac
case TypeMacAddrArray:
typ = arrow.ListOf(types.ExtensionTypes.Mac)
default:
panic("unknown type " + typ.Name())
}
if col.CreationOptions.PrimaryKey {
metadata[MetadataPrimaryKey] = MetadataTrue
}
if col.CreationOptions.Unique {
metadata[MetadataUnique] = MetadataTrue
}
return arrow.Field{
Name: col.Name,
Type: typ,
Nullable: !col.CreationOptions.NotNull,
Metadata: arrow.MetadataFrom(metadata),
}
}
func TableNameFromSchema(schema *arrow.Schema) (string, error) {
k := schema.Metadata().FindKey(MetadataTableName)
if k == -1 {
return "", fmt.Errorf("schema has no table name metadata")
}
return schema.Metadata().Values()[k], nil
}
func CQSchemaToArrow(table *Table) *arrow.Schema {
fields := make([]arrow.Field, 0, len(table.Columns))
for _, col := range table.Columns {
fields = append(fields, CQColumnToArrowField(&col))
}
metadata := arrow.NewMetadata([]string{MetadataTableName}, []string{table.Name})
return arrow.NewSchema(fields, &metadata)
}
func CQTypesOneToRecord(mem memory.Allocator, c CQTypes, arrowSchema *arrow.Schema) arrow.Record {
return CQTypesToRecord(mem, []CQTypes{c}, arrowSchema)
}
func CQTypesToRecord(mem memory.Allocator, c []CQTypes, arrowSchema *arrow.Schema) arrow.Record {
bldr := array.NewRecordBuilder(mem, arrowSchema)
fields := bldr.Fields()
for i := range fields {
for j := range c {
switch c[j][i].Type() {
case TypeBool:
if c[j][i].(*Bool).Status == Present {
bldr.Field(i).(*array.BooleanBuilder).Append(c[j][i].(*Bool).Bool)
} else {
bldr.Field(i).(*array.BooleanBuilder).AppendNull()
}
case TypeInt:
if c[j][i].(*Int8).Status == Present {
bldr.Field(i).(*array.Int64Builder).Append(c[j][i].(*Int8).Int)
} else {
bldr.Field(i).(*array.Int64Builder).AppendNull()
}
case TypeFloat:
if c[j][i].(*Float8).Status == Present {
bldr.Field(i).(*array.Float64Builder).Append(c[j][i].(*Float8).Float)
} else {
bldr.Field(i).(*array.Float64Builder).AppendNull()
}
case TypeString:
if c[j][i].(*Text).Status == Present {
// In the new type system we wont allow null string as they are not valid utf-8
// https://github.com/apache/arrow/pull/35161#discussion_r1170516104
bldr.Field(i).(*array.StringBuilder).Append(strings.ReplaceAll(c[j][i].(*Text).Str, "\x00", ""))
} else {
bldr.Field(i).(*array.StringBuilder).AppendNull()
}
case TypeByteArray:
if c[j][i].(*Bytea).Status == Present {
bldr.Field(i).(*array.BinaryBuilder).Append(c[j][i].(*Bytea).Bytes)
} else {
bldr.Field(i).(*array.BinaryBuilder).AppendNull()
}
case TypeStringArray:
if c[j][i].(*TextArray).Status == Present {
listBldr := bldr.Field(i).(*array.ListBuilder)
listBldr.Append(true)
for _, str := range c[j][i].(*TextArray).Elements {
listBldr.ValueBuilder().(*array.StringBuilder).Append(strings.ReplaceAll(str.Str, "\x00", ""))
}
} else {
bldr.Field(i).(*array.ListBuilder).AppendNull()
}
case TypeIntArray:
if c[j][i].(*Int8Array).Status == Present {
listBldr := bldr.Field(i).(*array.ListBuilder)
listBldr.Append(true)
for _, e := range c[j][i].(*Int8Array).Elements {
listBldr.ValueBuilder().(*array.Int64Builder).Append(e.Int)
}
} else {
bldr.Field(i).(*array.ListBuilder).AppendNull()
}
case TypeTimestamp:
if c[j][i].(*Timestamptz).Status == Present {
bldr.Field(i).(*array.TimestampBuilder).Append(arrow.Timestamp(c[j][i].(*Timestamptz).Time.UnixMicro()))
} else {
bldr.Field(i).(*array.TimestampBuilder).AppendNull()
}
case TypeJSON:
if c[j][i].(*JSON).Status == Present {
var d any
if err := json.Unmarshal(c[j][i].(*JSON).Bytes, &d); err != nil {
panic(err)
}
bldr.Field(i).(*types.JSONBuilder).Append(d)
} else {
bldr.Field(i).(*types.JSONBuilder).AppendNull()
}
case TypeUUID:
if c[j][i].(*UUID).Status == Present {
bldr.Field(i).(*types.UUIDBuilder).Append(c[j][i].(*UUID).Bytes)
} else {
bldr.Field(i).(*types.UUIDBuilder).AppendNull()
}
case TypeUUIDArray:
if c[j][i].(*UUIDArray).Status == Present {
listBldr := bldr.Field(i).(*array.ListBuilder)
listBldr.Append(true)
for _, e := range c[j][i].(*UUIDArray).Elements {
listBldr.ValueBuilder().(*types.UUIDBuilder).Append(e.Bytes)
}
} else {
bldr.Field(i).(*array.ListBuilder).AppendNull()
}
case TypeInet:
if c[j][i].(*Inet).Status == Present {
bldr.Field(i).(*types.InetBuilder).Append(*c[j][i].(*Inet).IPNet)
} else {
bldr.Field(i).(*types.InetBuilder).AppendNull()
}
case TypeInetArray:
if c[j][i].(*InetArray).Status == Present {
listBldr := bldr.Field(i).(*array.ListBuilder)
listBldr.Append(true)
for _, e := range c[j][i].(*InetArray).Elements {
listBldr.ValueBuilder().(*types.InetBuilder).Append(*e.IPNet)
}
} else {
bldr.Field(i).(*array.ListBuilder).AppendNull()
}
case TypeCIDR:
if c[j][i].(*CIDR).Status == Present {
bldr.Field(i).(*types.InetBuilder).Append(*c[j][i].(*CIDR).IPNet)
} else {
bldr.Field(i).(*types.InetBuilder).AppendNull()
}
case TypeCIDRArray:
if c[j][i].(*CIDRArray).Status == Present {
listBldr := bldr.Field(i).(*array.ListBuilder)
listBldr.Append(true)
for _, e := range c[j][i].(*CIDRArray).Elements {
listBldr.ValueBuilder().(*types.InetBuilder).Append(*e.IPNet)
}
} else {
bldr.Field(i).(*array.ListBuilder).AppendNull()
}
case TypeMacAddr:
if c[j][i].(*Macaddr).Status == Present {
bldr.Field(i).(*types.MacBuilder).Append(c[j][i].(*Macaddr).Addr)
} else {
bldr.Field(i).(*types.MacBuilder).AppendNull()
}
case TypeMacAddrArray:
if c[j][i].(*MacaddrArray).Status == Present {
listBldr := bldr.Field(i).(*array.ListBuilder)
listBldr.Append(true)
for _, e := range c[j][i].(*MacaddrArray).Elements {
listBldr.ValueBuilder().(*types.MacBuilder).Append(e.Addr)
}
} else {
bldr.Field(i).(*array.ListBuilder).AppendNull()
}
}
}
}
return bldr.NewRecord()
}