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// Copyright 2014 Google 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 storage
import (
"fmt"
"sort"
info "github.com/google/cadvisor/info/v1"
)
type StorageDriver interface {
AddStats(cInfo *info.ContainerInfo, stats *info.ContainerStats) error
// Close will clear the state of the storage driver. The elements
// stored in the underlying storage may or may not be deleted depending
// on the implementation of the storage driver.
Close() error
}
type StorageDriverFunc func() (StorageDriver, error)
var registeredPlugins = map[string](StorageDriverFunc){}
func RegisterStorageDriver(name string, f StorageDriverFunc) {
registeredPlugins[name] = f
}
func New(name string) (StorageDriver, error) {
if name == "" {
return nil, nil
}
f, ok := registeredPlugins[name]
if !ok {
return nil, fmt.Errorf("unknown backend storage driver: %s", name)
}
return f()
}
func ListDrivers() []string {
drivers := make([]string, 0, len(registeredPlugins))
for name := range registeredPlugins {
drivers = append(drivers, name)
}
sort.Strings(drivers)
return drivers
}
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