refac: deprecate vitess/go/maps2 for golang.org/x/exp/maps (#14960)

Signed-off-by: Eshaan Aggarwal <96648934+EshaanAgg@users.noreply.github.com>

Author: EshaanAgg

go/maps2/maps.go

@@ -24,7 +24,8 @@ import (
 	"strings"
 	"time"
 
-	"vitess.io/vitess/go/maps2"
+	"golang.org/x/exp/maps"
+
 	"vitess.io/vitess/go/mysql/replication"
 
 	binlogdatapb "vitess.io/vitess/go/vt/proto/binlogdata"
@@ -380,7 +381,7 @@ func (dr *switcherDryRun) resetSequences(ctx context.Context) error {
 }
 
 func (dr *switcherDryRun) initializeTargetSequences(ctx context.Context, sequencesByBackingTable map[string]*sequenceMetadata) error {
-	sortedBackingTableNames := maps2.Keys(sequencesByBackingTable)
+	sortedBackingTableNames := maps.Keys(sequencesByBackingTable)
 	slices.Sort(sortedBackingTableNames)
 	dr.drLog.Log(fmt.Sprintf("The following sequence backing tables used by tables being moved will be initialized: %s",
 		strings.Join(sortedBackingTableNames, ",")))

go/vt/vtctl/workflow/switcher_dry_run.go

@@ -25,10 +25,10 @@ import (
 	"sync"
 	"time"
 
+	"golang.org/x/exp/maps"
 	"golang.org/x/sync/errgroup"
 
 	"vitess.io/vitess/go/json2"
-	"vitess.io/vitess/go/maps2"
 	"vitess.io/vitess/go/sqlescape"
 	"vitess.io/vitess/go/sqltypes"
 	"vitess.io/vitess/go/vt/binlog/binlogplayer"
@@ -1347,7 +1347,7 @@ func (ts *trafficSwitcher) getTargetSequenceMetadata(ctx context.Context) (map[s
 // error if any is seen.
 func (ts *trafficSwitcher) findSequenceUsageInKeyspace(vschema *vschemapb.Keyspace) (map[string]*sequenceMetadata, bool, error) {
 	allFullyQualified := true
-	targets := maps2.Values(ts.Targets())
+	targets := maps.Values(ts.Targets())
 	if len(targets) == 0 || targets[0].GetPrimary() == nil { // This should never happen
 		return nil, false, vterrors.Errorf(vtrpcpb.Code_INTERNAL, "no primary tablet found for target keyspace %s", ts.targetKeyspace)
 	}

go/vt/vtctl/workflow/traffic_switcher.go

@@ -23,9 +23,9 @@ import (
 	"testing"
 
 	"github.com/stretchr/testify/require"
+	"golang.org/x/exp/maps"
 
 	"vitess.io/vitess/go/constants/sidecar"
-	"vitess.io/vitess/go/maps2"
 	"vitess.io/vitess/go/mysql/collations"
 	"vitess.io/vitess/go/mysql/config"
 	"vitess.io/vitess/go/mysql/fakesqldb"
@@ -150,7 +150,7 @@ func TestGetChangedViewNames(t *testing.T) {
 	got, err := getChangedViewNames(context.Background(), conn, true)
 	require.NoError(t, err)
 	require.Len(t, got, 3)
-	require.ElementsMatch(t, maps2.Keys(got), []string{"v1", "v2", "lead"})
+	require.ElementsMatch(t, maps.Keys(got), []string{"v1", "v2", "lead"})
 	require.NoError(t, db.LastError())
 
 	// Not serving primary
@@ -187,7 +187,7 @@ func TestGetViewDefinition(t *testing.T) {
 	got, err := collectGetViewDefinitions(conn, bv)
 	require.NoError(t, err)
 	require.Len(t, got, 2)
-	require.ElementsMatch(t, maps2.Keys(got), []string{"v1", "lead"})
+	require.ElementsMatch(t, maps.Keys(got), []string{"v1", "lead"})
 	require.Equal(t, "create_view_v1", got["v1"])
 	require.Equal(t, "create_view_lead", got["lead"])
 	require.NoError(t, db.LastError())
@@ -358,7 +358,7 @@ func TestGetMismatchedTableNames(t *testing.T) {
 			if tc.expectedError != "" {
 				require.ErrorContains(t, err, tc.expectedError)
 			} else {
-				require.ElementsMatch(t, maps2.Keys(mismatchedTableNames), tc.expectedTableNames)
+				require.ElementsMatch(t, maps.Keys(mismatchedTableNames), tc.expectedTableNames)
 				require.NoError(t, db.LastError())
 			}
 		})

go/vt/vttablet/tabletserver/schema/db_test.go

@@ -21,14 +21,14 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
-	"maps"
 	"net/http"
 	"strings"
 	"sync"
 	"time"
 
+	"golang.org/x/exp/maps"
+
 	"vitess.io/vitess/go/constants/sidecar"
-	"vitess.io/vitess/go/maps2"
 	"vitess.io/vitess/go/mysql/collations"
 	"vitess.io/vitess/go/mysql/config"
 	"vitess.io/vitess/go/mysql/replication"
@@ -589,7 +589,7 @@ func (se *Engine) getDroppedTables(curTables map[string]bool, changedViews map[s
 		}
 	}
 
-	return maps2.Values(dropped)
+	return maps.Values(dropped)
 }
 
 func getTableData(ctx context.Context, conn *connpool.Conn, includeStats bool) (*sqltypes.Result, error) {

go/vt/vttablet/tabletserver/schema/engine.go

@@ -24,7 +24,8 @@ import (
 	"strings"
 	"time"
 
-	"vitess.io/vitess/go/maps2"
+	"golang.org/x/exp/maps"
+
 	"vitess.io/vitess/go/mysql/replication"
 	"vitess.io/vitess/go/vt/vtctl/workflow"
 
@@ -399,7 +400,7 @@ func (dr *switcherDryRun) resetSequences(ctx context.Context) error {
 }
 
 func (dr *switcherDryRun) initializeTargetSequences(ctx context.Context, sequencesByBackingTable map[string]*sequenceMetadata) error {
-	sortedBackingTableNames := maps2.Keys(sequencesByBackingTable)
+	sortedBackingTableNames := maps.Keys(sequencesByBackingTable)
 	slices.Sort(sortedBackingTableNames)
 	dr.drLog.Log(fmt.Sprintf("The following sequence backing tables used by tables being moved will be initialized: %s",
 		strings.Join(sortedBackingTableNames, ",")))

go/vt/wrangler/switcher_dry_run.go

@@ -26,12 +26,12 @@ import (
 	"sync"
 	"time"
 
+	"golang.org/x/exp/maps"
 	"golang.org/x/sync/errgroup"
 
 	"vitess.io/vitess/go/mysql/collations"
 
 	"vitess.io/vitess/go/json2"
-	"vitess.io/vitess/go/maps2"
 	"vitess.io/vitess/go/sqlescape"
 	"vitess.io/vitess/go/sqltypes"
 	"vitess.io/vitess/go/vt/binlog/binlogplayer"
@@ -2108,7 +2108,7 @@ func (ts *trafficSwitcher) getTargetSequenceMetadata(ctx context.Context) (map[s
 // error if any is seen.
 func (ts *trafficSwitcher) findSequenceUsageInKeyspace(vschema *vschemapb.Keyspace) (map[string]*sequenceMetadata, bool, error) {
 	allFullyQualified := true
-	targets := maps2.Values(ts.Targets())
+	targets := maps.Values(ts.Targets())
 	if len(targets) == 0 || targets[0].GetPrimary() == nil { // This should never happen
 		return nil, false, vterrors.Errorf(vtrpcpb.Code_INTERNAL, "no primary tablet found for target keyspace %s", ts.targetKeyspace)
 	}