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verify.go
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verify.go
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// Copyright 2015 The Cockroach 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.
//
// Author: Tamir Duberstein (tamird@gmail.com)
package sql
import (
"github.com/gogo/protobuf/proto"
"github.com/cockroachdb/cockroach/pkg/config"
"github.com/cockroachdb/cockroach/pkg/roachpb"
"github.com/cockroachdb/cockroach/pkg/sql/sqlbase"
)
func expectDescriptorID(systemConfig config.SystemConfig, idKey roachpb.Key, id sqlbase.ID) error {
idValue := systemConfig.GetValue(idKey)
if idValue == nil {
return errStaleMetadata
}
cachedID, err := idValue.GetInt()
if err != nil {
return err
}
if sqlbase.ID(cachedID) != id {
return errStaleMetadata
}
return nil
}
func expectDescriptor(
systemConfig config.SystemConfig, idKey roachpb.Key, desc *sqlbase.Descriptor,
) error {
descValue := systemConfig.GetValue(idKey)
if descValue == nil {
return errStaleMetadata
}
var cachedDesc sqlbase.Descriptor
if err := descValue.GetProto(&cachedDesc); err != nil {
return err
}
if !proto.Equal(&cachedDesc, desc) {
return errStaleMetadata
}
return nil
}
func expectDeleted(systemConfig config.SystemConfig, key roachpb.Key) error {
if systemConfig.GetValue(key) != nil {
return errStaleMetadata
}
return nil
}