98 lines
3.1 KiB
Go
98 lines
3.1 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 main
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import (
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"flag"
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"fmt"
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"os"
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"time"
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"github.com/golang/glog"
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"github.com/google/cadvisor/manager"
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"github.com/google/cadvisor/storage"
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"github.com/google/cadvisor/storage/bigquery"
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"github.com/google/cadvisor/storage/influxdb"
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"github.com/google/cadvisor/storage/memory"
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)
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var argDbUsername = flag.String("storage_driver_user", "root", "database username")
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var argDbPassword = flag.String("storage_driver_password", "root", "database password")
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var argDbHost = flag.String("storage_driver_host", "localhost:8086", "database host:port")
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var argDbName = flag.String("storage_driver_db", "cadvisor", "database name")
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var argDbTable = flag.String("storage_driver_table", "stats", "table name")
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var argDbIsSecure = flag.Bool("storage_driver_secure", false, "use secure connection with database")
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var argDbBufferDuration = flag.Duration("storage_driver_buffer_duration", 60*time.Second, "Writes in the storage driver will be buffered for this duration, and committed to the non memory backends as a single transaction")
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const statsRequestedByUI = 60
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// Creates a memory storage with an optional backend storage option.
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func NewMemoryStorage(backendStorageName string) (*memory.InMemoryStorage, error) {
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var storageDriver *memory.InMemoryStorage
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var backendStorage storage.StorageDriver
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var err error
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// TODO(vmarmol): We shouldn't need the housekeeping interval here and it shouldn't be public.
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statsToCache := int(*argDbBufferDuration / *manager.HousekeepingInterval)
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if statsToCache < statsRequestedByUI {
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// The UI requests the most recent 60 stats by default.
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statsToCache = statsRequestedByUI
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}
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switch backendStorageName {
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case "":
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backendStorage = nil
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case "influxdb":
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var hostname string
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hostname, err = os.Hostname()
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if err != nil {
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return nil, err
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}
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backendStorage, err = influxdb.New(
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hostname,
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*argDbTable,
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*argDbName,
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*argDbUsername,
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*argDbPassword,
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*argDbHost,
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*argDbIsSecure,
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*argDbBufferDuration,
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)
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case "bigquery":
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var hostname string
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hostname, err = os.Hostname()
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if err != nil {
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return nil, err
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}
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backendStorage, err = bigquery.New(
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hostname,
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*argDbTable,
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*argDbName,
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)
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default:
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err = fmt.Errorf("unknown backend storage driver: %v", *argDbDriver)
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}
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if err != nil {
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return nil, err
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}
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if backendStorageName != "" {
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glog.Infof("Using backend storage type %q", backendStorageName)
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} else {
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glog.Infof("No backend storage selected")
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}
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glog.Infof("Caching %d stats in memory", statsToCache)
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storageDriver = memory.New(statsToCache, backendStorage)
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return storageDriver, nil
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}
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