зеркало из https://github.com/github/vitess-gh.git
71 строка
2.2 KiB
Go
71 строка
2.2 KiB
Go
/*
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Copyright 2019 The Vitess Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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// Package dtids contains dtid convenience functions.
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package dtids
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import (
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"fmt"
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"strconv"
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"strings"
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"vitess.io/vitess/go/vt/vterrors"
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querypb "vitess.io/vitess/go/vt/proto/query"
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topodatapb "vitess.io/vitess/go/vt/proto/topodata"
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vtgatepb "vitess.io/vitess/go/vt/proto/vtgate"
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vtrpcpb "vitess.io/vitess/go/vt/proto/vtrpc"
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)
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// New generates a dtid based on Session_ShardSession.
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func New(mmShard *vtgatepb.Session_ShardSession) string {
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return fmt.Sprintf("%s:%s:%d", mmShard.Target.Keyspace, mmShard.Target.Shard, mmShard.TransactionId)
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}
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// ShardSession builds a Session_ShardSession from a dtid.
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func ShardSession(dtid string) (*vtgatepb.Session_ShardSession, error) {
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splits := strings.Split(dtid, ":")
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if len(splits) != 3 {
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return nil, vterrors.Errorf(vtrpcpb.Code_INVALID_ARGUMENT, "invalid parts in dtid: %s", dtid)
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}
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target := &querypb.Target{
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Keyspace: splits[0],
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Shard: splits[1],
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TabletType: topodatapb.TabletType_PRIMARY,
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}
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txid, err := strconv.ParseInt(splits[2], 10, 0)
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if err != nil {
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return nil, vterrors.Errorf(vtrpcpb.Code_INVALID_ARGUMENT, "invalid transaction id in dtid: %s", dtid)
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}
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return &vtgatepb.Session_ShardSession{
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Target: target,
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TransactionId: txid,
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}, nil
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}
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// TransactionID extracts the original transaction ID from the dtid.
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func TransactionID(dtid string) (int64, error) {
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splits := strings.Split(dtid, ":")
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if len(splits) != 3 {
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return 0, vterrors.Errorf(vtrpcpb.Code_INVALID_ARGUMENT, "invalid parts in dtid: %s", dtid)
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}
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txid, err := strconv.ParseInt(splits[2], 10, 0)
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if err != nil {
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return 0, vterrors.Errorf(vtrpcpb.Code_INVALID_ARGUMENT, "invalid transaction id in dtid: %s", dtid)
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}
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return txid, nil
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}
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