示例#1
0
文件: conn.go 项目: littleyang/vitess
// SplitQuery is the stub for TabletServer.SplitQuery RPC
func (conn *gRPCQueryClient) SplitQuery(ctx context.Context, query querytypes.BoundQuery, splitColumn string, splitCount int64) (queries []querytypes.QuerySplit, err error) {
	conn.mu.RLock()
	defer conn.mu.RUnlock()
	if conn.cc == nil {
		err = tabletconn.ConnClosed
		return
	}

	q, err := querytypes.BoundQueryToProto3(query.Sql, query.BindVariables)
	if err != nil {
		return nil, tabletconn.TabletErrorFromGRPC(err)
	}
	req := &querypb.SplitQueryRequest{
		Target:            conn.target,
		EffectiveCallerId: callerid.EffectiveCallerIDFromContext(ctx),
		ImmediateCallerId: callerid.ImmediateCallerIDFromContext(ctx),
		Query:             q,
		SplitColumn:       splitColumn,
		SplitCount:        splitCount,
		SessionId:         conn.sessionID,
	}
	sqr, err := conn.c.SplitQuery(ctx, req)
	if err != nil {
		return nil, tabletconn.TabletErrorFromGRPC(err)
	}
	split, err := querytypes.Proto3ToQuerySplits(sqr.Queries)
	if err != nil {
		return nil, tabletconn.TabletErrorFromGRPC(err)
	}
	return split, nil
}
示例#2
0
文件: conn.go 项目: dumbunny/vitess
// SplitQuery is the stub for TabletServer.SplitQuery RPC
// TODO(erez): Remove this method and rename SplitQueryV2 to SplitQuery once
// the migration to SplitQuery V2 is done.
func (conn *gRPCQueryClient) SplitQuery(ctx context.Context, target *querypb.Target, query querytypes.BoundQuery, splitColumn string, splitCount int64) (queries []querytypes.QuerySplit, err error) {
	conn.mu.RLock()
	defer conn.mu.RUnlock()
	if conn.cc == nil {
		err = tabletconn.ConnClosed
		return
	}

	q, err := querytypes.BoundQueryToProto3(query.Sql, query.BindVariables)
	if err != nil {
		return nil, tabletconn.TabletErrorFromGRPC(err)
	}
	req := &querypb.SplitQueryRequest{
		Target:              target,
		EffectiveCallerId:   callerid.EffectiveCallerIDFromContext(ctx),
		ImmediateCallerId:   callerid.ImmediateCallerIDFromContext(ctx),
		Query:               q,
		SplitColumn:         []string{splitColumn},
		SplitCount:          splitCount,
		NumRowsPerQueryPart: 0,
		Algorithm:           querypb.SplitQueryRequest_EQUAL_SPLITS,
		UseSplitQueryV2:     false,
	}
	sqr, err := conn.c.SplitQuery(ctx, req)
	if err != nil {
		return nil, tabletconn.TabletErrorFromGRPC(err)
	}
	split, err := querytypes.Proto3ToQuerySplits(sqr.Queries)
	if err != nil {
		return nil, tabletconn.TabletErrorFromGRPC(err)
	}
	return split, nil
}