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store.go
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store.go
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// Copyright 2019 Samaritan 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.
package config
//go:generate mockgen -package $GOPACKAGE -destination store_mock_test.go -source $GOFILE
import (
"errors"
)
var (
ErrNotExist = errors.New("config not exist")
ErrExist = errors.New("config is exist")
)
// The store is a kv store.
type Store interface {
Get(namespace, typ, key string) ([]byte, error)
Add(namespace, typ, key string, value []byte) error
Update(namespace, typ, key string, value []byte) error
Del(namespace, typ, key string) error
Exist(namespace, typ, key string) bool
GetKeys(namespace, typ string) ([]string, error)
Start() error
Stop()
}
// SubscribableStore allows you to subscribe to the namespace you are interested in,
// and will send a notification when there is some change in the namespace.
type SubscribableStore interface {
Store
Subscribe(namespace string) error
UnSubscribe(namespace string) error
Event() <-chan struct{}
}