vitess.io/vitess@v0.16.2/go/vt/topo/topotests/srv_vschema_test.go

/*
Copyright 2019 The Vitess Authors.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

	http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package topotests

import (
	"context"
	"testing"

	"google.golang.org/protobuf/proto"

	"vitess.io/vitess/go/vt/topo/memorytopo"

	topodatapb "vitess.io/vitess/go/vt/proto/topodata"
	vschemapb "vitess.io/vitess/go/vt/proto/vschema"
)

func TestRebuildVSchema(t *testing.T) {
	ctx := context.Background()
	emptySrvVSchema := &vschemapb.SrvVSchema{
		RoutingRules:      &vschemapb.RoutingRules{},
		ShardRoutingRules: &vschemapb.ShardRoutingRules{},
	}

	// Set up topology.
	cells := []string{"cell1", "cell2"}
	ts := memorytopo.NewServer(cells...)

	// Rebuild with no keyspace / no vschema
	if err := ts.RebuildSrvVSchema(ctx, cells); err != nil {
		t.Errorf("RebuildVSchema failed: %v", err)
	}
	for _, cell := range cells {
		if v, err := ts.GetSrvVSchema(ctx, cell); err != nil || !proto.Equal(v, emptySrvVSchema) {
			t.Errorf("unexpected GetSrvVSchema(%v) result: %v %v", cell, v, err)
		}
	}

	// create a keyspace, rebuild, should see an empty entry
	emptyKs1SrvVSchema := &vschemapb.SrvVSchema{
		RoutingRules:      &vschemapb.RoutingRules{},
		ShardRoutingRules: &vschemapb.ShardRoutingRules{},
		Keyspaces: map[string]*vschemapb.Keyspace{
			"ks1": {},
		},
	}
	if err := ts.CreateKeyspace(ctx, "ks1", &topodatapb.Keyspace{}); err != nil {
		t.Fatalf("CreateKeyspace(ks1) failed: %v", err)
	}
	if err := ts.RebuildSrvVSchema(ctx, cells); err != nil {
		t.Errorf("RebuildVSchema failed: %v", err)
	}
	for _, cell := range cells {
		if v, err := ts.GetSrvVSchema(ctx, cell); err != nil || !proto.Equal(v, emptyKs1SrvVSchema) {
			t.Errorf("unexpected GetSrvVSchema(%v) result: %v %v", cell, v, err)
		}
	}

	// save a vschema for the keyspace, rebuild, should see it
	keyspace1 := &vschemapb.Keyspace{
		Sharded: true,
	}
	if err := ts.SaveVSchema(ctx, "ks1", keyspace1); err != nil {
		t.Fatalf("SaveVSchema(ks1) failed: %v", err)
	}
	if err := ts.RebuildSrvVSchema(ctx, cells); err != nil {
		t.Errorf("RebuildVSchema failed: %v", err)
	}
	wanted1 := &vschemapb.SrvVSchema{
		RoutingRules:      &vschemapb.RoutingRules{},
		ShardRoutingRules: &vschemapb.ShardRoutingRules{},
		Keyspaces: map[string]*vschemapb.Keyspace{
			"ks1": keyspace1,
		},
	}
	for _, cell := range cells {
		if v, err := ts.GetSrvVSchema(ctx, cell); err != nil || !proto.Equal(v, wanted1) {
			t.Errorf("unexpected GetSrvVSchema(%v) result: %v %v", cell, v, err)
		}
	}

	// save a vschema for a new keyspace, rebuild in one cell only
	if err := ts.CreateKeyspace(ctx, "ks2", &topodatapb.Keyspace{}); err != nil {
		t.Fatalf("CreateKeyspace(ks2) failed: %v", err)
	}
	keyspace2 := &vschemapb.Keyspace{
		Sharded: true,
		Vindexes: map[string]*vschemapb.Vindex{
			"name1": {
				Type: "hash",
			},
		},
		Tables: map[string]*vschemapb.Table{
			"table1": {
				ColumnVindexes: []*vschemapb.ColumnVindex{
					{
						Column: "column1",
						Name:   "name1",
					},
				},
			},
		},
	}
	if err := ts.SaveVSchema(ctx, "ks2", keyspace2); err != nil {
		t.Fatalf("SaveVSchema(ks1) failed: %v", err)
	}
	if err := ts.RebuildSrvVSchema(ctx, []string{"cell1"}); err != nil {
		t.Errorf("RebuildVSchema failed: %v", err)
	}
	wanted2 := &vschemapb.SrvVSchema{
		RoutingRules:      &vschemapb.RoutingRules{},
		ShardRoutingRules: &vschemapb.ShardRoutingRules{},
		Keyspaces: map[string]*vschemapb.Keyspace{
			"ks1": keyspace1,
			"ks2": keyspace2,
		},
	}
	if v, err := ts.GetSrvVSchema(ctx, "cell1"); err != nil || !proto.Equal(v, wanted2) {
		t.Errorf("unexpected GetSrvVSchema result: %v %v", v, err)
	}
	if v, err := ts.GetSrvVSchema(ctx, "cell2"); err != nil || !proto.Equal(v, wanted1) {
		t.Errorf("unexpected GetSrvVSchema result: %v %v", v, err)
	}

	// now rebuild everywhere
	if err := ts.RebuildSrvVSchema(ctx, nil); err != nil {
		t.Errorf("RebuildVSchema failed: %v", err)
	}
	for _, cell := range cells {
		if v, err := ts.GetSrvVSchema(ctx, cell); err != nil || !proto.Equal(v, wanted2) {
			t.Errorf("unexpected GetSrvVSchema(%v) result: %v %v", cell, v, err)
		}
	}

	rr := &vschemapb.RoutingRules{
		Rules: []*vschemapb.RoutingRule{{
			FromTable: "t1",
			ToTables:  []string{"t2", "t3"},
		}},
	}

	if err := ts.SaveRoutingRules(ctx, rr); err != nil {
		t.Fatalf("SaveRoutingRules() failed: %v", err)
	}
	if err := ts.RebuildSrvVSchema(ctx, nil); err != nil {
		t.Errorf("RebuildVSchema failed: %v", err)
	}
	wanted3 := &vschemapb.SrvVSchema{
		RoutingRules:      rr,
		ShardRoutingRules: &vschemapb.ShardRoutingRules{},
		Keyspaces: map[string]*vschemapb.Keyspace{
			"ks1": keyspace1,
			"ks2": keyspace2,
		},
	}
	for _, cell := range cells {
		if v, err := ts.GetSrvVSchema(ctx, cell); err != nil || !proto.Equal(v, wanted3) {
			t.Errorf("unexpected GetSrvVSchema(%v) result: %v %v", cell, v, err)
		}
	}

	wanted4 := wanted1
	wanted4.RoutingRules = rr

	// Delete a keyspace, checks vschema entry in map goes away.
	if err := ts.SaveVSchema(ctx, "ks2", &vschemapb.Keyspace{}); err != nil {
		t.Fatalf("SaveVSchema(ks1) failed: %v", err)
	}
	if err := ts.DeleteKeyspace(ctx, "ks2"); err != nil {
		t.Fatalf("DeleteKeyspace failed: %v", err)
	}
	if err := ts.RebuildSrvVSchema(ctx, nil); err != nil {
		t.Errorf("RebuildVSchema failed: %v", err)
	}
	for _, cell := range cells {
		if v, err := ts.GetSrvVSchema(ctx, cell); err != nil || !proto.Equal(v, wanted4) {
			t.Errorf("unexpected GetSrvVSchema(%v) result: %v != %v (err = %v)", cell, v, wanted4, err)
		}
	}
}