Golang proto.QueryResult類代碼示例

// ExecuteEntityIds excutes a non-streaming query based on given KeyspaceId map.
func (vtg *VTGate) ExecuteEntityIds(context context.Context, query *proto.EntityIdsQuery, reply *proto.QueryResult) (err error) {
	defer handlePanic(&err)

	startTime := time.Now()
	statsKey := []string{"ExecuteEntityIds", query.Keyspace, string(query.TabletType)}
	defer vtg.timings.Record(statsKey, startTime)

	x := vtg.inFlight.Add(1)
	defer vtg.inFlight.Add(-1)
	if 0 < vtg.maxInFlight && vtg.maxInFlight < x {
		return ErrTooManyInFlight
	}

	qr, err := vtg.resolver.ExecuteEntityIds(context, query)
	if err == nil {
		reply.Result = qr
		vtg.rowsReturned.Add(statsKey, int64(len(qr.Rows)))
	} else {
		reply.Error = err.Error()
		if strings.Contains(reply.Error, errDupKey) {
			infoErrors.Add("DupKey", 1)
		} else {
			normalErrors.Add(statsKey, 1)
			vtg.logExecuteEntityIds.Errorf("%v, query: %+v", err, query)
		}
	}
	reply.Session = query.Session
	return nil
}

func TestVTGateExecuteShard(t *testing.T) {
	sandbox := createSandbox("TestVTGateExecuteShard")
	sbc := &sandboxConn{}
	sandbox.MapTestConn("0", sbc)
	q := proto.QueryShard{
		Sql:      "query",
		Keyspace: "TestVTGateExecuteShard",
		Shards:   []string{"0"},
	}
	qr := new(proto.QueryResult)
	err := RpcVTGate.ExecuteShard(&context.DummyContext{}, &q, qr)
	if err != nil {
		t.Errorf("want nil, got %v", err)
	}
	wantqr := new(proto.QueryResult)
	wantqr.Result = singleRowResult
	if !reflect.DeepEqual(wantqr, qr) {
		t.Errorf("want \n%+v, got \n%+v", singleRowResult, qr)
	}
	if qr.Session != nil {
		t.Errorf("want nil, got %+v\n", qr.Session)
	}

	q.Session = new(proto.Session)
	RpcVTGate.Begin(&context.DummyContext{}, q.Session)
	if !q.Session.InTransaction {
		t.Errorf("want true, got false")
	}
	RpcVTGate.ExecuteShard(&context.DummyContext{}, &q, qr)
	wantSession := &proto.Session{
		InTransaction: true,
		ShardSessions: []*proto.ShardSession{{
			Keyspace:      "TestVTGateExecuteShard",
			Shard:         "0",
			TransactionId: 1,
		}},
	}
	if !reflect.DeepEqual(wantSession, q.Session) {
		t.Errorf("want \n%+v, got \n%+v", wantSession, q.Session)
	}

	RpcVTGate.Commit(&context.DummyContext{}, q.Session)
	if sbc.CommitCount != 1 {
		t.Errorf("want 1, got %d", sbc.CommitCount)
	}

	q.Session = new(proto.Session)
	RpcVTGate.Begin(&context.DummyContext{}, q.Session)
	RpcVTGate.ExecuteShard(&context.DummyContext{}, &q, qr)
	RpcVTGate.Rollback(&context.DummyContext{}, q.Session)
	/*
		// Flaky: This test should be run manually.
		runtime.Gosched()
		if sbc.RollbackCount != 1 {
			t.Errorf("want 1, got %d", sbc.RollbackCount)
		}
	*/
}

func TestVTGateStreamExecuteShard(t *testing.T) {
	s := createSandbox("TestVTGateStreamExecuteShard")
	sbc := &sandboxConn{}
	s.MapTestConn("0", sbc)
	q := proto.QueryShard{
		Sql:        "query",
		Keyspace:   "TestVTGateStreamExecuteShard",
		Shards:     []string{"0"},
		TabletType: topo.TYPE_MASTER,
	}
	// Test for successful execution
	var qrs []*proto.QueryResult
	err := RpcVTGate.StreamExecuteShard(&context.DummyContext{}, &q, func(r *proto.QueryResult) error {
		qrs = append(qrs, r)
		return nil
	})
	if err != nil {
		t.Errorf("want nil, got %v", err)
	}
	row := new(proto.QueryResult)
	row.Result = singleRowResult
	want := []*proto.QueryResult{row}
	if !reflect.DeepEqual(want, qrs) {
		t.Errorf("want \n%+v, got \n%+v", want, qrs)
	}

	q.Session = new(proto.Session)
	qrs = nil
	RpcVTGate.Begin(&context.DummyContext{}, q.Session)
	err = RpcVTGate.StreamExecuteShard(&context.DummyContext{}, &q, func(r *proto.QueryResult) error {
		qrs = append(qrs, r)
		return nil
	})
	want = []*proto.QueryResult{
		row,
		&proto.QueryResult{
			Session: &proto.Session{
				InTransaction: true,
				ShardSessions: []*proto.ShardSession{{
					Keyspace:      "TestVTGateStreamExecuteShard",
					Shard:         "0",
					TransactionId: 1,
					TabletType:    topo.TYPE_MASTER,
				}},
			},
		},
	}
	if !reflect.DeepEqual(want, qrs) {
		t.Errorf("want \n%+v, got \n%+v", want, qrs)
	}
}

// StreamExecuteShard executes a streaming query on the specified shards.
func (vtg *VTGate) StreamExecuteShard(context context.Context, query *proto.QueryShard, sendReply func(*proto.QueryResult) error) (err error) {
	defer handlePanic(&err)

	startTime := time.Now()
	statsKey := []string{"StreamExecuteShard", query.Keyspace, string(query.TabletType)}
	defer vtg.timings.Record(statsKey, startTime)

	x := vtg.inFlight.Add(1)
	defer vtg.inFlight.Add(-1)
	if 0 < vtg.maxInFlight && vtg.maxInFlight < x {
		return ErrTooManyInFlight
	}

	var rowCount int64
	err = vtg.resolver.StreamExecute(
		context,
		query.Sql,
		query.BindVariables,
		query.Keyspace,
		query.TabletType,
		query.Session,
		func(keyspace string) (string, []string, error) {
			return query.Keyspace, query.Shards, nil
		},
		func(mreply *mproto.QueryResult) error {
			reply := new(proto.QueryResult)
			reply.Result = mreply
			rowCount += int64(len(mreply.Rows))
			// Note we don't populate reply.Session here,
			// as it may change incrementaly as responses are sent.
			return sendReply(reply)
		})
	vtg.rowsReturned.Add(statsKey, rowCount)

	if err != nil {
		normalErrors.Add(statsKey, 1)
		vtg.logStreamExecuteShard.Errorf("%v, query: %+v", err, query)
	}
	// Now we can send the final Sessoin info.
	if query.Session != nil {
		sendReply(&proto.QueryResult{Session: query.Session})
	}
	return err
}

func TestVTGateExecuteKeyspaceIds(t *testing.T) {
	s := createSandbox("TestVTGateExecuteKeyspaceIds")
	sbc1 := &sandboxConn{}
	sbc2 := &sandboxConn{}
	s.MapTestConn("-20", sbc1)
	s.MapTestConn("20-40", sbc2)
	kid10, err := key.HexKeyspaceId("10").Unhex()
	if err != nil {
		t.Errorf("want nil, got %+v", err)
	}
	q := proto.KeyspaceIdQuery{
		Sql:         "query",
		Keyspace:    "TestVTGateExecuteKeyspaceIds",
		KeyspaceIds: []key.KeyspaceId{kid10},
		TabletType:  topo.TYPE_MASTER,
	}
	// Test for successful execution
	qr := new(proto.QueryResult)
	err = RpcVTGate.ExecuteKeyspaceIds(&context.DummyContext{}, &q, qr)
	if err != nil {
		t.Errorf("want nil, got %v", err)
	}
	wantqr := new(proto.QueryResult)
	wantqr.Result = singleRowResult
	if !reflect.DeepEqual(wantqr, qr) {
		t.Errorf("want \n%+v, got \n%+v", singleRowResult, qr)
	}
	if qr.Session != nil {
		t.Errorf("want nil, got %+v\n", qr.Session)
	}
	if sbc1.ExecCount != 1 {
		t.Errorf("want 1, got %v\n", sbc1.ExecCount)
	}
	// Test for successful execution in transaction
	q.Session = new(proto.Session)
	RpcVTGate.Begin(&context.DummyContext{}, q.Session)
	if !q.Session.InTransaction {
		t.Errorf("want true, got false")
	}
	RpcVTGate.ExecuteKeyspaceIds(&context.DummyContext{}, &q, qr)
	wantSession := &proto.Session{
		InTransaction: true,
		ShardSessions: []*proto.ShardSession{{
			Keyspace:      "TestVTGateExecuteKeyspaceIds",
			Shard:         "-20",
			TransactionId: 1,
			TabletType:    topo.TYPE_MASTER,
		}},
	}
	if !reflect.DeepEqual(wantSession, q.Session) {
		t.Errorf("want \n%+v, got \n%+v", wantSession, q.Session)
	}
	RpcVTGate.Commit(&context.DummyContext{}, q.Session)
	if sbc1.CommitCount.Get() != 1 {
		t.Errorf("want 1, got %d", sbc1.CommitCount.Get())
	}
	// Test for multiple shards
	kid30, err := key.HexKeyspaceId("30").Unhex()
	if err != nil {
		t.Errorf("want nil, got %+v", err)
	}
	q.KeyspaceIds = []key.KeyspaceId{kid10, kid30}
	RpcVTGate.ExecuteKeyspaceIds(&context.DummyContext{}, &q, qr)
	if qr.Result.RowsAffected != 2 {
		t.Errorf("want 2, got %v", qr.Result.RowsAffected)
	}
}

func TestVTGateStreamExecuteKeyRanges(t *testing.T) {
	s := createSandbox("TestVTGateStreamExecuteKeyRanges")
	sbc := &sandboxConn{}
	s.MapTestConn("-20", sbc)
	sbc1 := &sandboxConn{}
	s.MapTestConn("20-40", sbc1)
	kr, err := key.ParseKeyRangeParts("", "20")
	sq := proto.KeyRangeQuery{
		Sql:        "query",
		Keyspace:   "TestVTGateStreamExecuteKeyRanges",
		KeyRanges:  []key.KeyRange{kr},
		TabletType: topo.TYPE_MASTER,
	}
	// Test for successful execution
	var qrs []*proto.QueryResult
	err = RpcVTGate.StreamExecuteKeyRanges(&context.DummyContext{}, &sq, func(r *proto.QueryResult) error {
		qrs = append(qrs, r)
		return nil
	})
	if err != nil {
		t.Errorf("want nil, got %v", err)
	}
	row := new(proto.QueryResult)
	row.Result = singleRowResult
	want := []*proto.QueryResult{row}
	if !reflect.DeepEqual(want, qrs) {
		t.Errorf("want \n%+v, got \n%+v", want, qrs)
	}

	sq.Session = new(proto.Session)
	qrs = nil
	RpcVTGate.Begin(&context.DummyContext{}, sq.Session)
	err = RpcVTGate.StreamExecuteKeyRanges(&context.DummyContext{}, &sq, func(r *proto.QueryResult) error {
		qrs = append(qrs, r)
		return nil
	})
	want = []*proto.QueryResult{
		row,
		&proto.QueryResult{
			Session: &proto.Session{
				InTransaction: true,
				ShardSessions: []*proto.ShardSession{{
					Keyspace:      "TestVTGateStreamExecuteKeyRanges",
					Shard:         "-20",
					TransactionId: 1,
					TabletType:    topo.TYPE_MASTER,
				}},
			},
		},
	}
	if !reflect.DeepEqual(want, qrs) {
		t.Errorf("want \n%+v, got \n%+v", want, qrs)
	}

	// Test for successful execution - multiple shards
	kr, err = key.ParseKeyRangeParts("10", "40")
	sq.KeyRanges = []key.KeyRange{kr}
	err = RpcVTGate.StreamExecuteKeyRanges(&context.DummyContext{}, &sq, func(r *proto.QueryResult) error {
		qrs = append(qrs, r)
		return nil
	})
	if err != nil {
		t.Errorf("want nil, got %v", err)
	}
}

func TestVTGateStreamExecuteKeyspaceIds(t *testing.T) {
	s := createSandbox("TestVTGateStreamExecuteKeyspaceIds")
	sbc := &sandboxConn{}
	s.MapTestConn("-20", sbc)
	sbc1 := &sandboxConn{}
	s.MapTestConn("20-40", sbc1)
	kid10, err := key.HexKeyspaceId("10").Unhex()
	if err != nil {
		t.Errorf("want nil, got %+v", err)
	}
	sq := proto.KeyspaceIdQuery{
		Sql:         "query",
		Keyspace:    "TestVTGateStreamExecuteKeyspaceIds",
		KeyspaceIds: []key.KeyspaceId{kid10},
		TabletType:  topo.TYPE_MASTER,
	}
	// Test for successful execution
	var qrs []*proto.QueryResult
	err = RpcVTGate.StreamExecuteKeyspaceIds(&context.DummyContext{}, &sq, func(r *proto.QueryResult) error {
		qrs = append(qrs, r)
		return nil
	})
	if err != nil {
		t.Errorf("want nil, got %v", err)
	}
	row := new(proto.QueryResult)
	row.Result = singleRowResult
	want := []*proto.QueryResult{row}
	if !reflect.DeepEqual(want, qrs) {
		t.Errorf("want \n%+v, got \n%+v", want, qrs)
	}

	// Test for successful execution in transaction
	sq.Session = new(proto.Session)
	qrs = nil
	RpcVTGate.Begin(&context.DummyContext{}, sq.Session)
	err = RpcVTGate.StreamExecuteKeyspaceIds(&context.DummyContext{}, &sq, func(r *proto.QueryResult) error {
		qrs = append(qrs, r)
		return nil
	})
	want = []*proto.QueryResult{
		row,
		&proto.QueryResult{
			Session: &proto.Session{
				InTransaction: true,
				ShardSessions: []*proto.ShardSession{{
					Keyspace:      "TestVTGateStreamExecuteKeyspaceIds",
					Shard:         "-20",
					TransactionId: 1,
					TabletType:    topo.TYPE_MASTER,
				}},
			},
		},
	}
	if !reflect.DeepEqual(want, qrs) {
		t.Errorf("want\n%#v\ngot\n%#v", want, qrs)
	}
	RpcVTGate.Commit(&context.DummyContext{}, sq.Session)
	if sbc.CommitCount.Get() != 1 {
		t.Errorf("want 1, got %d", sbc.CommitCount.Get())
	}
	// Test for successful execution - multiple keyspaceids in single shard
	sq.Session = nil
	qrs = nil
	kid15, err := key.HexKeyspaceId("15").Unhex()
	if err != nil {
		t.Errorf("want nil, got %+v", err)
	}
	sq.KeyspaceIds = []key.KeyspaceId{kid10, kid15}
	err = RpcVTGate.StreamExecuteKeyspaceIds(&context.DummyContext{}, &sq, func(r *proto.QueryResult) error {
		qrs = append(qrs, r)
		return nil
	})
	if err != nil {
		t.Errorf("want nil, got %v", err)
	}
	row = new(proto.QueryResult)
	row.Result = singleRowResult
	want = []*proto.QueryResult{row}
	if !reflect.DeepEqual(want, qrs) {
		t.Errorf("want \n%+v, got \n%+v", want, qrs)
	}
	// Test for successful execution - multiple keyspaceids in multiple shards
	kid30, err := key.HexKeyspaceId("30").Unhex()
	if err != nil {
		t.Errorf("want nil, got %+v", err)
	}
	sq.KeyspaceIds = []key.KeyspaceId{kid10, kid30}
	err = RpcVTGate.StreamExecuteKeyspaceIds(&context.DummyContext{}, &sq, func(r *proto.QueryResult) error {
		qrs = append(qrs, r)
		return nil
	})
	if err != nil {
		t.Errorf("want nil, got %v", err)
	}
}