feat: implement MSSQL row transformation and loading functions

cmd/go_migrate/process.go

@@ -3,9 +3,7 @@ package main
 import (
 	"context"
 	"database/sql"
-	"fmt"
 	"sync"
-	"time"
 
 	"github.com/jackc/pgx/v5/pgxpool"
 
@@ -69,48 +67,9 @@ func logColumnTypes(columnTypes []ColumnType, label string) {
 	}
 }
 
-func transformRowsMssql(columns []ColumnType, in <-chan []UnknownRowValues, out chan<- []UnknownRowValues) {
-	for rows := range in {
-		log.Debugf("Chunk received, transforming...")
-
-		for _, rowValues := range rows {
-			for i, col := range columns {
-				value := rowValues[i]
-				if col.SystemType() == "uniqueidentifier" {
-					if b, ok := value.([]byte); ok {
-						rowValues[i] = mssqlUuidToBigEndian(b)
-					}
-				} else if col.SystemType() == "geometry" || col.SystemType() == "geography" {
-					if b, ok := value.([]byte); ok {
-						rowValues[i] = wkbToEwkbWithSrid(b, 4326)
-					}
-				} else if col.SystemType() == "datetime" || col.SystemType() == "datetime2" {
-					if t, ok := value.(time.Time); ok {
-						rowValues[i] = ensureUTC(t)
-					}
-				}
-			}
-		}
-
-		out <- rows
-	}
-}
-
 func logSampleRow(job MigrationJob, columns []ColumnType, rowValues UnknownRowValues, tag string) {
 	log.Infof("[%s.%s] Sample row: (%s)", job.Schema, job.Table, tag)
 	for i, col := range columns {
 		log.Infof("%s (%T): %v", col.Name(), rowValues[i], rowValues[i])
 	}
 }
-
-func fakeLoader(job MigrationJob, columns []ColumnType, in <-chan []UnknownRowValues) {
-	for rows := range in {
-		log.Debugf("Chunk received, loading data into...")
-
-		for i, rowValues := range rows {
-			if i%100 == 0 {
-				logSampleRow(job, columns, rowValues, fmt.Sprintf("row %d", i))
-			}
-		}
-	}
-}