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storage.go
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storage.go
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// Copyright 2015 Comcast Cable Communications Management, LLC
//
// 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.
//
// End Copyright
package core
import (
"fmt"
)
// ToDo: Use this less
type Pair struct {
K []byte
V []byte
}
func (d *Pair) String() string {
return fmt.Sprintf(`Pair{"%s","%s"}`, d.K, d.V)
}
type StorageStats struct {
NumRecords int
DateOfLastRecord string
}
type Storage interface {
// ListLocations(ctx *Context) ([]string, error)
Load(ctx *Context, loc string) ([]Pair, error)
Add(ctx *Context, loc string, data *Pair) error
Remove(ctx *Context, loc string, k []byte) (int64, error)
Clear(ctx *Context, loc string) (int64, error)
Delete(ctx *Context, loc string) error
GetStats(ctx *Context, loc string) (StorageStats, error)
Close(ctx *Context) error
Health(ctx *Context) error
}