80 lines
2.3 KiB
Go
80 lines
2.3 KiB
Go
// Copyright 2014 Google Inc. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package storage
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import (
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"fmt"
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"sync"
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"github.com/google/cadvisor/info"
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)
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type StorageDriver interface {
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WriteStats(ref info.ContainerReference, stats *info.ContainerStats) error
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}
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// Database config which should contain all information used to connect to
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// all/most databases
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type Config struct {
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Engine string `json:"engine,omitempty"`
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Host string `json:"host,omitempty"`
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Port int `json:"port,omitempty"`
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Username string `json:"username,omitempty"`
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Password string `json:"password,omitempty"`
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Database string `json:"database,omitempty"`
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Params map[string]string `json:"parameters,omitempty"`
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}
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type StorageFactory interface {
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String() string
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New(config *Config) (StorageDriver, error)
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}
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type containerStatsWriterFactoryManager struct {
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lock sync.RWMutex
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factories map[string]StorageFactory
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}
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func (self *containerStatsWriterFactoryManager) Register(factory StorageFactory) {
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self.lock.Lock()
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defer self.lock.Unlock()
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if self.factories == nil {
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self.factories = make(map[string]StorageFactory, 8)
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}
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self.factories[factory.String()] = factory
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}
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func (self *containerStatsWriterFactoryManager) New(config *Config) (StorageDriver, error) {
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self.lock.RLock()
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defer self.lock.RUnlock()
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if factory, ok := self.factories[config.Engine]; ok {
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return factory.New(config)
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}
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return nil, fmt.Errorf("unknown database %v", config.Engine)
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}
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var globalContainerStatsWriterFactoryManager containerStatsWriterFactoryManager
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func RegisterStorage(factory StorageFactory) {
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globalContainerStatsWriterFactoryManager.Register(factory)
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}
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func NewStorage(config *Config) (StorageDriver, error) {
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return globalContainerStatsWriterFactoryManager.New(config)
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}
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