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class_definition_context.go
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/
class_definition_context.go
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/*
* Copyright (c) 2008-2023, Hazelcast, Inc. All Rights Reserved.
*
* 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.
*/
package serialization
import (
"fmt"
"reflect"
"strconv"
"sync"
ihzerrors "github.com/hazelcast/hazelcast-go-client/internal/hzerrors"
"github.com/hazelcast/hazelcast-go-client/serialization"
)
type ClassDefinitionContext struct {
classDefs map[string]*serialization.ClassDefinition
mu *sync.RWMutex
factoryID int32
}
func NewClassDefinitionContext(factoryID int32) *ClassDefinitionContext {
return &ClassDefinitionContext{
factoryID: factoryID,
classDefs: make(map[string]*serialization.ClassDefinition),
mu: &sync.RWMutex{},
}
}
func (c *ClassDefinitionContext) LookUp(classID int32, version int32) *serialization.ClassDefinition {
c.mu.RLock()
cd := c.classDefs[encodeVersionedClassID(classID, version)]
c.mu.RUnlock()
return cd
}
func (c *ClassDefinitionContext) register(classDefinition *serialization.ClassDefinition) error {
if classDefinition == nil {
return nil
}
if classDefinition.FactoryID != c.factoryID {
text := fmt.Sprintf("this factory's id is %d, intended factory id is %d.", c.factoryID, classDefinition.FactoryID)
return ihzerrors.NewSerializationError(text, nil)
}
k := encodeVersionedClassID(classDefinition.ClassID, classDefinition.Version)
c.mu.Lock()
defer c.mu.Unlock()
current := c.classDefs[k]
if current == nil {
c.classDefs[k] = classDefinition
return nil
}
if !reflect.DeepEqual(current, classDefinition) {
return ihzerrors.NewSerializationError(fmt.Sprintf("incompatible class definition with same class id: %d",
classDefinition.ClassID), nil)
}
return nil
}
func encodeVersionedClassID(classID int32, version int32) string {
return strconv.Itoa(int(classID)) + "v" + strconv.Itoa(int(version))
}