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proto3.go
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proto3.go
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// Copyright 2015 Google Inc. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package proto
import (
"fmt"
"github.com/youtube/vitess/go/vt/key"
tproto "github.com/youtube/vitess/go/vt/tabletserver/proto"
"github.com/youtube/vitess/go/vt/topo"
pbq "github.com/youtube/vitess/go/vt/proto/query"
pb "github.com/youtube/vitess/go/vt/proto/vtgate"
)
// SessionToProto transforms a Session into proto3
func SessionToProto(s *Session) *pb.Session {
if s == nil {
return nil
}
result := &pb.Session{
InTransaction: s.InTransaction,
}
result.ShardSessions = make([]*pb.Session_ShardSession, len(s.ShardSessions))
for i, ss := range s.ShardSessions {
result.ShardSessions[i] = &pb.Session_ShardSession{
Target: &pbq.Target{
Keyspace: ss.Keyspace,
Shard: ss.Shard,
TabletType: topo.TabletTypeToProto(ss.TabletType),
},
TransactionId: ss.TransactionId,
}
}
return result
}
// ProtoToSession transforms a proto3 Session into native types
func ProtoToSession(s *pb.Session) *Session {
if s == nil {
return nil
}
result := &Session{
InTransaction: s.InTransaction,
}
result.ShardSessions = make([]*ShardSession, len(s.ShardSessions))
for i, ss := range s.ShardSessions {
result.ShardSessions[i] = &ShardSession{
Keyspace: ss.Target.Keyspace,
Shard: ss.Target.Shard,
TabletType: topo.ProtoToTabletType(ss.Target.TabletType),
TransactionId: ss.TransactionId,
}
}
return result
}
// EntityIdsToProto converts an array of EntityId to proto3
func EntityIdsToProto(l []EntityId) []*pb.ExecuteEntityIdsRequest_EntityId {
if len(l) == 0 {
return nil
}
result := make([]*pb.ExecuteEntityIdsRequest_EntityId, len(l))
for i, e := range l {
result[i] = &pb.ExecuteEntityIdsRequest_EntityId{
KeyspaceId: []byte(e.KeyspaceID),
}
switch v := e.ExternalID.(type) {
case string:
result[i].XidType = pb.ExecuteEntityIdsRequest_EntityId_TYPE_BYTES
result[i].XidBytes = []byte(v)
case []byte:
result[i].XidType = pb.ExecuteEntityIdsRequest_EntityId_TYPE_BYTES
result[i].XidBytes = v
case int:
result[i].XidType = pb.ExecuteEntityIdsRequest_EntityId_TYPE_INT
result[i].XidInt = int64(v)
case int16:
result[i].XidType = pb.ExecuteEntityIdsRequest_EntityId_TYPE_INT
result[i].XidInt = int64(v)
case int32:
result[i].XidType = pb.ExecuteEntityIdsRequest_EntityId_TYPE_INT
result[i].XidInt = int64(v)
case int64:
result[i].XidType = pb.ExecuteEntityIdsRequest_EntityId_TYPE_INT
result[i].XidInt = v
case uint:
result[i].XidType = pb.ExecuteEntityIdsRequest_EntityId_TYPE_UINT
result[i].XidUint = uint64(v)
case uint16:
result[i].XidType = pb.ExecuteEntityIdsRequest_EntityId_TYPE_UINT
result[i].XidUint = uint64(v)
case uint32:
result[i].XidType = pb.ExecuteEntityIdsRequest_EntityId_TYPE_UINT
result[i].XidUint = uint64(v)
case uint64:
result[i].XidType = pb.ExecuteEntityIdsRequest_EntityId_TYPE_UINT
result[i].XidUint = v
case float32:
result[i].XidType = pb.ExecuteEntityIdsRequest_EntityId_TYPE_FLOAT
result[i].XidFloat = float64(v)
case float64:
result[i].XidType = pb.ExecuteEntityIdsRequest_EntityId_TYPE_FLOAT
result[i].XidFloat = v
default:
panic(fmt.Errorf("Unsupported value %v", v))
}
}
return result
}
// ProtoToEntityIds converts an array of EntityId from proto3
func ProtoToEntityIds(l []*pb.ExecuteEntityIdsRequest_EntityId) []EntityId {
if len(l) == 0 {
return nil
}
result := make([]EntityId, len(l))
for i, e := range l {
result[i].KeyspaceID = key.KeyspaceId(e.KeyspaceId)
switch e.XidType {
case pb.ExecuteEntityIdsRequest_EntityId_TYPE_BYTES:
result[i].ExternalID = e.XidBytes
case pb.ExecuteEntityIdsRequest_EntityId_TYPE_INT:
result[i].ExternalID = e.XidInt
case pb.ExecuteEntityIdsRequest_EntityId_TYPE_UINT:
result[i].ExternalID = e.XidUint
case pb.ExecuteEntityIdsRequest_EntityId_TYPE_FLOAT:
result[i].ExternalID = e.XidFloat
default:
panic(fmt.Errorf("Unsupported XidType %v", e.XidType))
}
}
return result
}
// BoundShardQueriesToProto transforms a list of BoundShardQuery to proto3
func BoundShardQueriesToProto(bsq []BoundShardQuery) []*pb.BoundShardQuery {
if len(bsq) == 0 {
return nil
}
result := make([]*pb.BoundShardQuery, len(bsq))
for i, q := range bsq {
result[i] = &pb.BoundShardQuery{
Query: tproto.BoundQueryToProto3(q.Sql, q.BindVariables),
Keyspace: q.Keyspace,
Shards: q.Shards,
}
}
return result
}
// ProtoToBoundShardQueries transforms a list of BoundShardQuery from proto3
func ProtoToBoundShardQueries(bsq []*pb.BoundShardQuery) []BoundShardQuery {
if len(bsq) == 0 {
return nil
}
result := make([]BoundShardQuery, len(bsq))
for i, q := range bsq {
result[i].Sql = string(q.Query.Sql)
result[i].BindVariables = tproto.Proto3ToBindVariables(q.Query.BindVariables)
result[i].Keyspace = q.Keyspace
result[i].Shards = q.Shards
}
return result
}
// BoundKeyspaceIdQueriesToProto transforms a list of BoundKeyspaceIdQuery to proto3
func BoundKeyspaceIdQueriesToProto(bsq []BoundKeyspaceIdQuery) []*pb.BoundKeyspaceIdQuery {
if len(bsq) == 0 {
return nil
}
result := make([]*pb.BoundKeyspaceIdQuery, len(bsq))
for i, q := range bsq {
result[i] = &pb.BoundKeyspaceIdQuery{
Query: tproto.BoundQueryToProto3(q.Sql, q.BindVariables),
Keyspace: q.Keyspace,
KeyspaceIds: key.KeyspaceIdsToProto(q.KeyspaceIds),
}
}
return result
}
// ProtoToBoundKeyspaceIdQueries transforms a list of BoundKeyspaceIdQuery from proto3
func ProtoToBoundKeyspaceIdQueries(bsq []*pb.BoundKeyspaceIdQuery) []BoundKeyspaceIdQuery {
if len(bsq) == 0 {
return nil
}
result := make([]BoundKeyspaceIdQuery, len(bsq))
for i, q := range bsq {
result[i].Sql = string(q.Query.Sql)
result[i].BindVariables = tproto.Proto3ToBindVariables(q.Query.BindVariables)
result[i].Keyspace = q.Keyspace
result[i].KeyspaceIds = key.ProtoToKeyspaceIds(q.KeyspaceIds)
}
return result
}