feat: refactor migration job structure to use SourceTableInfo and TargetTableInfo for improved configuration handling

cmd/go_migrate/loader.go

@@ -8,6 +8,7 @@ import (
 	"sync"
 	"time"
 
+	"git.ksdemosapps.com/kylesoda/go-migrate/internal/app/config"
 	"github.com/jackc/pgx/v5"
 	"github.com/jackc/pgx/v5/pgconn"
 	"github.com/jackc/pgx/v5/pgxpool"
@@ -18,14 +19,14 @@ import (
 func loadRowsPostgres(
 	ctx context.Context,
 	db *pgxpool.Pool,
-	job MigrationJob,
+	tableInfo config.TargetTableInfo,
 	columns []ColumnType,
 	chChunksIn <-chan Chunk,
 	chErrorsOut chan<- LoaderError,
 	chJobErrorsOut chan<- JobError,
 	wgActiveChunks *sync.WaitGroup,
 ) {
-	tableId := pgx.Identifier{job.Schema, job.Table}
+	tableId := pgx.Identifier{tableInfo.Schema, tableInfo.Table}
 	colNames := Map(columns, func(col ColumnType) string {
 		return col.name
 	})
@@ -102,7 +103,7 @@ func loadChunkPostgres(
 	return false
 }
 
-func loadRowsMssql(ctx context.Context, job MigrationJob, columns []ColumnType, db *sql.DB, in <-chan []UnknownRowValues) error {
+func loadRowsMssql(ctx context.Context, tableInfo config.TargetTableInfo, columns []ColumnType, db *sql.DB, in <-chan []UnknownRowValues) error {
 	chunkCount := 0
 	totalRowsLoaded := 0
 
@@ -114,7 +115,7 @@ func loadRowsMssql(ctx context.Context, job MigrationJob, columns []ColumnType,
 			return fmt.Errorf("error starting transaction: %w", err)
 		}
 
-		fullTableName := fmt.Sprintf("[%s].[%s]", job.Schema, job.Table)
+		fullTableName := fmt.Sprintf("[%s].[%s]", tableInfo.Schema, tableInfo.Table)
 		colNames := Map(columns, func(col ColumnType) string {
 			return col.name
 		})
@@ -177,14 +178,13 @@ func Map[T any, V any](input []T, mapper func(T) V) []V {
 	return result
 }
 
-func fakeLoader(job MigrationJob, columns []ColumnType, in <-chan [][]any) {
-
+func fakeLoader(tableInfo config.TargetTableInfo, columns []ColumnType, in <-chan [][]any) {
 	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))
+				logSampleRow(tableInfo.Schema, tableInfo.Table, columns, rowValues, fmt.Sprintf("row %d", i))
 			}
 		}
 	}