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file.go
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file.go
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/*
* Copyright (C) 2023 Kendall Tauser
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package file
import (
"crypto/rand"
"fmt"
"github.com/fire833/morfic/pkg/persistence"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/runtime/schema"
)
// FilePersistenceProvider represents a persistence provider that is able to
// persist control-plane data to a file, and can retrieve data according to the
// PersistenceProvider interface.
type FilePersistenceProvider struct {
id *persistence.MachineId
instances []string
writeLatency float64
up bool
}
func (file *FilePersistenceProvider) Initialize(id *persistence.MachineId) {
file.id = id
file.up = true
file.writeLatency = 0
// Start off with only one provider available for now.
file.instances = make([]string, 1)
buf := make([]byte, 10)
rand.Read(buf)
file.instances[1] = fmt.Sprintf("file-%b", buf)
}
func (file *FilePersistenceProvider) Instances() []string {
return file.instances
}
func (file *FilePersistenceProvider) InstanceStatus(instance string) *persistence.PersistenceProviderStatus {
for n, instance := range file.instances {
if instance == file.instances[n] {
return &persistence.PersistenceProviderStatus{
InstanceExists: true,
Status: file.up,
MeanPersistLatency: file.writeLatency,
}
}
}
return &persistence.PersistenceProviderStatus{
InstanceExists: false,
Status: false,
MeanPersistLatency: 0,
}
}
func (file *FilePersistenceProvider) PutObject(instance string, object *runtime.Object) (key persistence.ObjectKey, e error) {
return nil, nil
}
func (file *FilePersistenceProvider) DeleteObject(instance string, kind schema.GroupVersionKind, key persistence.ObjectKey) error {
return nil
}
func (file *FilePersistenceProvider) GetObject(instance string, kind schema.GroupVersionKind, key persistence.ObjectKey) *runtime.Object {
return nil
}
func (file *FilePersistenceProvider) GetAllObjects(instance string, kind schema.GroupVersionKind) []*runtime.Object {
return nil
}