Move PG/SF simple schema changes to generic test

BQ would need to implement GetTableSchema interface

flow/connectors/core.go

@@ -27,11 +27,16 @@ type Connector interface {
 	ConnectionActive(context.Context) error
 }
 
-type CDCPullConnector interface {
+type GetTableSchemaConnector interface {
 	Connector
 
 	// GetTableSchema returns the schema of a table.
 	GetTableSchema(ctx context.Context, req *protos.GetTableSchemaBatchInput) (*protos.GetTableSchemaBatchOutput, error)
+}
+
+type CDCPullConnector interface {
+	Connector
+	GetTableSchemaConnector
 
 	// EnsurePullability ensures that the connector is pullable.
 	EnsurePullability(ctx context.Context, req *protos.EnsurePullabilityBatchInput) (
@@ -252,6 +257,9 @@ var (
 	_ CDCNormalizeConnector = &connsnowflake.SnowflakeConnector{}
 	_ CDCNormalizeConnector = &connclickhouse.ClickhouseConnector{}
 
+	_ GetTableSchemaConnector = &connpostgres.PostgresConnector{}
+	_ GetTableSchemaConnector = &connsnowflake.SnowflakeConnector{}
+
 	_ NormalizedTablesConnector = &connpostgres.PostgresConnector{}
 	_ NormalizedTablesConnector = &connbigquery.BigQueryConnector{}
 	_ NormalizedTablesConnector = &connsnowflake.SnowflakeConnector{}

flow/e2e/bigquery/bigquery.go

@@ -8,6 +8,7 @@ import (
 
 	"github.com/jackc/pgx/v5"
 
+	"github.com/PeerDB-io/peer-flow/connectors"
 	connpostgres "github.com/PeerDB-io/peer-flow/connectors/postgres"
 	"github.com/PeerDB-io/peer-flow/e2e"
 	"github.com/PeerDB-io/peer-flow/generated/protos"
@@ -35,6 +36,11 @@ func (s PeerFlowE2ETestSuiteBQ) Connector() *connpostgres.PostgresConnector {
 	return s.conn
 }
 
+func (s PeerFlowE2ETestSuiteBQ) DestinationConnector() connectors.Connector {
+	// TODO have BQ connector
+	return nil
+}
+
 func (s PeerFlowE2ETestSuiteBQ) Suffix() string {
 	return s.bqSuffix
 }

flow/e2e/bigquery/peer_flow_bq_test.go

@@ -643,7 +643,8 @@ func (s PeerFlowE2ETestSuiteBQ) Test_Multi_Table_BQ() {
 	e2e.RequireEnvCanceled(s.t, env)
 }
 
-// TODO: not checking schema exactly, add later
+// TODO: not checking schema exactly
+// write a GetTableSchemaConnector for BQ to enable generic_test
 func (s PeerFlowE2ETestSuiteBQ) Test_Simple_Schema_Changes_BQ() {
 	tc := e2e.NewTemporalClient(s.t)
 

flow/e2e/generic/generic_test.go

@@ -0,0 +1,304 @@
+package e2e_generic
+
+import (
+	"context"
+	"fmt"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+
+	"github.com/PeerDB-io/peer-flow/connectors"
+	"github.com/PeerDB-io/peer-flow/e2e"
+	"github.com/PeerDB-io/peer-flow/e2e/bigquery"
+	"github.com/PeerDB-io/peer-flow/e2e/postgres"
+	"github.com/PeerDB-io/peer-flow/e2e/snowflake"
+	"github.com/PeerDB-io/peer-flow/e2eshared"
+	"github.com/PeerDB-io/peer-flow/generated/protos"
+	"github.com/PeerDB-io/peer-flow/model/qvalue"
+	peerflow "github.com/PeerDB-io/peer-flow/workflows"
+)
+
+func TestGenericPG(t *testing.T) {
+	e2eshared.RunSuite(t, SetupGenericSuite(e2e_postgres.SetupSuite))
+}
+
+func TestGenericSF(t *testing.T) {
+	e2eshared.RunSuite(t, SetupGenericSuite(e2e_snowflake.SetupSuite))
+}
+
+func TestGenericBQ(t *testing.T) {
+	e2eshared.RunSuite(t, SetupGenericSuite(e2e_bigquery.SetupSuite))
+}
+
+type Generic struct {
+	e2e.GenericSuite
+}
+
+func SetupGenericSuite[T e2e.GenericSuite](f func(t *testing.T) T) func(t *testing.T) Generic {
+	return func(t *testing.T) Generic {
+		t.Helper()
+		return Generic{f(t)}
+	}
+}
+
+func (s Generic) Test_Simple_Flow() {
+	t := s.T()
+	srcTable := "test_simple"
+	dstTable := "test_simple_dst"
+	srcSchemaTable := e2e.AttachSchema(s, srcTable)
+
+	_, err := s.Connector().Conn().Exec(context.Background(), fmt.Sprintf(`
+		CREATE TABLE IF NOT EXISTS %s (
+			id SERIAL PRIMARY KEY,
+			key TEXT NOT NULL,
+			value TEXT NOT NULL,
+			myh HSTORE NOT NULL
+		);
+	`, srcSchemaTable))
+	require.NoError(t, err)
+
+	connectionGen := e2e.FlowConnectionGenerationConfig{
+		FlowJobName:   e2e.AddSuffix(s, "test_simple"),
+		TableMappings: e2e.TableMappings(s, srcTable, dstTable),
+		Destination:   s.Peer(),
+	}
+	flowConnConfig := connectionGen.GenerateFlowConnectionConfigs()
+
+	tc := e2e.NewTemporalClient(t)
+	env := e2e.ExecutePeerflow(tc, peerflow.CDCFlowWorkflow, flowConnConfig, nil)
+
+	e2e.SetupCDCFlowStatusQuery(t, env, connectionGen)
+	// insert 10 rows into the source table
+	for i := range 10 {
+		testKey := fmt.Sprintf("test_key_%d", i)
+		testValue := fmt.Sprintf("test_value_%d", i)
+		_, err = s.Connector().Conn().Exec(context.Background(), fmt.Sprintf(`
+		INSERT INTO %s(key, value, myh) VALUES ($1, $2, '"a"=>"b"')
+		`, srcSchemaTable), testKey, testValue)
+		e2e.EnvNoError(t, env, err)
+	}
+	t.Log("Inserted 10 rows into the source table")
+
+	e2e.EnvWaitForEqualTablesWithNames(env, s, "normalizing 10 rows", srcTable, dstTable, `id,key,value,myh`)
+	env.Cancel()
+	e2e.RequireEnvCanceled(t, env)
+}
+
+func (s Generic) Test_Simple_Schema_Changes() {
+	t := s.T()
+
+	destinationSchemaConnector, ok := s.DestinationConnector().(connectors.GetTableSchemaConnector)
+	if !ok {
+		t.SkipNow()
+	}
+
+	srcTable := "test_simple_schema_changes"
+	dstTable := "test_simple_schema_changes_dst"
+	srcTableName := e2e.AttachSchema(s, srcTable)
+	dstTableName := s.DestinationTable(dstTable)
+
+	_, err := s.Connector().Conn().Exec(context.Background(), fmt.Sprintf(`
+		CREATE TABLE IF NOT EXISTS %s (
+			id BIGINT PRIMARY KEY GENERATED ALWAYS AS IDENTITY,
+			c1 BIGINT
+		);
+	`, srcTableName))
+	require.NoError(t, err)
+
+	connectionGen := e2e.FlowConnectionGenerationConfig{
+		FlowJobName:   e2e.AddSuffix(s, srcTable),
+		TableMappings: e2e.TableMappings(s, srcTable, dstTable),
+		Destination:   s.Peer(),
+	}
+
+	flowConnConfig := connectionGen.GenerateFlowConnectionConfigs()
+
+	// wait for PeerFlowStatusQuery to finish setup
+	// and then insert and mutate schema repeatedly.
+	tc := e2e.NewTemporalClient(t)
+	env := e2e.ExecutePeerflow(tc, peerflow.CDCFlowWorkflow, flowConnConfig, nil)
+	e2e.SetupCDCFlowStatusQuery(t, env, connectionGen)
+	_, err = s.Connector().Conn().Exec(context.Background(), fmt.Sprintf(`
+		INSERT INTO %s(c1) VALUES ($1)`, srcTableName), 1)
+	e2e.EnvNoError(t, env, err)
+	t.Log("Inserted initial row in the source table")
+
+	e2e.EnvWaitForEqualTables(env, s, "normalize reinsert", "test_simple_schema_changes", "id,c1")
+
+	expectedTableSchema := &protos.TableSchema{
+		TableIdentifier: e2e.ExpectedDestinationTableName(s, dstTable),
+		Columns: []*protos.FieldDescription{
+			{
+				Name:         e2e.ExpectedDestinationIdentifier(s, "id"),
+				Type:         string(qvalue.QValueKindNumeric),
+				TypeModifier: -1,
+			},
+			{
+				Name:         e2e.ExpectedDestinationIdentifier(s, "c1"),
+				Type:         string(qvalue.QValueKindNumeric),
+				TypeModifier: -1,
+			},
+			{
+				Name:         "_PEERDB_IS_DELETED",
+				Type:         string(qvalue.QValueKindBoolean),
+				TypeModifier: -1,
+			},
+			{
+				Name:         "_PEERDB_SYNCED_AT",
+				Type:         string(qvalue.QValueKindTimestamp),
+				TypeModifier: -1,
+			},
+		},
+	}
+	output, err := destinationSchemaConnector.GetTableSchema(context.Background(), &protos.GetTableSchemaBatchInput{
+		TableIdentifiers: []string{dstTableName},
+	})
+	e2e.EnvNoError(t, env, err)
+	e2e.EnvTrue(t, env, e2e.CompareTableSchemas(expectedTableSchema, output.TableNameSchemaMapping[dstTableName]))
+
+	// alter source table, add column c2 and insert another row.
+	_, err = s.Connector().Conn().Exec(context.Background(), fmt.Sprintf(`
+		ALTER TABLE %s ADD COLUMN c2 BIGINT`, srcTableName))
+	e2e.EnvNoError(t, env, err)
+	t.Log("Altered source table, added column c2")
+	_, err = s.Connector().Conn().Exec(context.Background(), fmt.Sprintf(`
+		INSERT INTO %s(c1,c2) VALUES ($1,$2)`, srcTableName), 2, 2)
+	e2e.EnvNoError(t, env, err)
+	t.Log("Inserted row with added c2 in the source table")
+
+	// verify we got our two rows, if schema did not match up it will error.
+	e2e.EnvWaitForEqualTables(env, s, "normalize altered row", "test_simple_schema_changes", "id,c1,c2")
+	expectedTableSchema = &protos.TableSchema{
+		TableIdentifier: e2e.ExpectedDestinationTableName(s, dstTable),
+		Columns: []*protos.FieldDescription{
+			{
+				Name:         e2e.ExpectedDestinationIdentifier(s, "id"),
+				Type:         string(qvalue.QValueKindNumeric),
+				TypeModifier: -1,
+			},
+			{
+				Name:         e2e.ExpectedDestinationIdentifier(s, "c1"),
+				Type:         string(qvalue.QValueKindNumeric),
+				TypeModifier: -1,
+			},
+			{
+				Name:         "_PEERDB_SYNCED_AT",
+				Type:         string(qvalue.QValueKindTimestamp),
+				TypeModifier: -1,
+			},
+			{
+				Name:         e2e.ExpectedDestinationIdentifier(s, "c2"),
+				Type:         string(qvalue.QValueKindNumeric),
+				TypeModifier: -1,
+			},
+		},
+	}
+	output, err = destinationSchemaConnector.GetTableSchema(context.Background(), &protos.GetTableSchemaBatchInput{
+		TableIdentifiers: []string{dstTableName},
+	})
+	e2e.EnvNoError(t, env, err)
+	e2e.EnvTrue(t, env, e2e.CompareTableSchemas(expectedTableSchema, output.TableNameSchemaMapping[dstTableName]))
+	e2e.EnvEqualTables(env, s, "test_simple_schema_changes", "id,c1,c2")
+
+	// alter source table, add column c3, drop column c2 and insert another row.
+	_, err = s.Connector().Conn().Exec(context.Background(), fmt.Sprintf(`
+		ALTER TABLE %s DROP COLUMN c2, ADD COLUMN c3 BIGINT`, srcTableName))
+	e2e.EnvNoError(t, env, err)
+	t.Log("Altered source table, dropped column c2 and added column c3")
+	_, err = s.Connector().Conn().Exec(context.Background(), fmt.Sprintf(`
+		INSERT INTO %s(c1,c3) VALUES ($1,$2)`, srcTableName), 3, 3)
+	e2e.EnvNoError(t, env, err)
+	t.Log("Inserted row with added c3 in the source table")
+
+	// verify we got our two rows, if schema did not match up it will error.
+	e2e.EnvWaitForEqualTables(env, s, "normalize dropped c2 column", "test_simple_schema_changes", "id,c1,c3")
+	expectedTableSchema = &protos.TableSchema{
+		TableIdentifier: e2e.ExpectedDestinationTableName(s, dstTable),
+		Columns: []*protos.FieldDescription{
+			{
+				Name:         e2e.ExpectedDestinationIdentifier(s, "id"),
+				Type:         string(qvalue.QValueKindNumeric),
+				TypeModifier: -1,
+			},
+			{
+				Name:         e2e.ExpectedDestinationIdentifier(s, "c1"),
+				Type:         string(qvalue.QValueKindNumeric),
+				TypeModifier: -1,
+			},
+			{
+				Name:         "_PEERDB_SYNCED_AT",
+				Type:         string(qvalue.QValueKindTimestamp),
+				TypeModifier: -1,
+			},
+			{
+				Name:         e2e.ExpectedDestinationIdentifier(s, "c2"),
+				Type:         string(qvalue.QValueKindNumeric),
+				TypeModifier: -1,
+			},
+			{
+				Name:         e2e.ExpectedDestinationIdentifier(s, "c3"),
+				Type:         string(qvalue.QValueKindNumeric),
+				TypeModifier: -1,
+			},
+		},
+	}
+	output, err = destinationSchemaConnector.GetTableSchema(context.Background(), &protos.GetTableSchemaBatchInput{
+		TableIdentifiers: []string{dstTableName},
+	})
+	e2e.EnvNoError(t, env, err)
+	e2e.EnvTrue(t, env, e2e.CompareTableSchemas(expectedTableSchema, output.TableNameSchemaMapping[dstTableName]))
+	e2e.EnvEqualTables(env, s, "test_simple_schema_changes", "id,c1,c3")
+
+	// alter source table, drop column c3 and insert another row.
+	_, err = s.Connector().Conn().Exec(context.Background(), fmt.Sprintf(`
+		ALTER TABLE %s DROP COLUMN c3`, srcTableName))
+	e2e.EnvNoError(t, env, err)
+	t.Log("Altered source table, dropped column c3")
+	_, err = s.Connector().Conn().Exec(context.Background(), fmt.Sprintf(`
+		INSERT INTO %s(c1) VALUES ($1)`, srcTableName), 4)
+	e2e.EnvNoError(t, env, err)
+	t.Log("Inserted row after dropping all columns in the source table")
+
+	// verify we got our two rows, if schema did not match up it will error.
+	e2e.EnvWaitForEqualTables(env, s, "normalize dropped c3 column", "test_simple_schema_changes", "id,c1")
+	expectedTableSchema = &protos.TableSchema{
+		TableIdentifier: e2e.ExpectedDestinationTableName(s, dstTable),
+		Columns: []*protos.FieldDescription{
+			{
+				Name:         e2e.ExpectedDestinationIdentifier(s, "id"),
+				Type:         string(qvalue.QValueKindNumeric),
+				TypeModifier: -1,
+			},
+			{
+				Name:         e2e.ExpectedDestinationIdentifier(s, "c1"),
+				Type:         string(qvalue.QValueKindNumeric),
+				TypeModifier: -1,
+			},
+			{
+				Name:         "_PEERDB_SYNCED_AT",
+				Type:         string(qvalue.QValueKindTimestamp),
+				TypeModifier: -1,
+			},
+			{
+				Name:         e2e.ExpectedDestinationIdentifier(s, "c2"),
+				Type:         string(qvalue.QValueKindNumeric),
+				TypeModifier: -1,
+			},
+			{
+				Name:         e2e.ExpectedDestinationIdentifier(s, "c3"),
+				Type:         string(qvalue.QValueKindNumeric),
+				TypeModifier: -1,
+			},
+		},
+	}
+	output, err = destinationSchemaConnector.GetTableSchema(context.Background(), &protos.GetTableSchemaBatchInput{
+		TableIdentifiers: []string{dstTableName},
+	})
+	e2e.EnvNoError(t, env, err)
+	e2e.EnvTrue(t, env, e2e.CompareTableSchemas(expectedTableSchema, output.TableNameSchemaMapping[dstTableName]))
+	e2e.EnvEqualTables(env, s, "test_simple_schema_changes", "id,c1")
+
+	env.Cancel()
+
+	e2e.RequireEnvCanceled(t, env)
+}