storj/storagenode/storagenodedb/bandwidthdb.go

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// Copyright (C) 2019 Storj Labs, Inc.
// See LICENSE for copying information.
package storagenodedb
import (
"context"
"database/sql"
"sync"
"time"
"github.com/zeebo/errs"
"storj.io/storj/pkg/pb"
"storj.io/storj/pkg/storj"
"storj.io/storj/storagenode/bandwidth"
)
type bandwidthdb struct {
*InfoDB
bandwidth bandwidthUsed
}
type bandwidthUsed struct {
mu sync.RWMutex
usedSince time.Time
used int64
}
// Bandwidth returns table for storing bandwidth usage.
func (db *DB) Bandwidth() bandwidth.DB { return db.info.Bandwidth() }
// Bandwidth returns table for storing bandwidth usage.
func (db *InfoDB) Bandwidth() bandwidth.DB { return &db.bandwidthdb }
// Add adds bandwidth usage to the table
func (db *bandwidthdb) Add(ctx context.Context, satelliteID storj.NodeID, action pb.PieceAction, amount int64, created time.Time) (err error) {
defer mon.Task()(&ctx)(&err)
_, err = db.db.Exec(`
INSERT INTO
bandwidth_usage(satellite_id, action, amount, created_at)
VALUES(?, ?, ?, ?)`, satelliteID, action, amount, created)
if err == nil {
db.bandwidth.mu.Lock()
defer db.bandwidth.mu.Unlock()
beginningOfMonth := getBeginningOfMonth(created.UTC())
if beginningOfMonth.Equal(db.bandwidth.usedSince) {
db.bandwidth.used += amount
} else if beginningOfMonth.After(db.bandwidth.usedSince) {
usage, err := db.Summary(ctx, beginningOfMonth, time.Now().UTC())
if err != nil {
return err
}
db.bandwidth.usedSince = beginningOfMonth
db.bandwidth.used = usage.Total()
}
}
return ErrInfo.Wrap(err)
}
// MonthSummary returns summary of the current months bandwidth usages
func (db *bandwidthdb) MonthSummary(ctx context.Context) (_ int64, err error) {
defer mon.Task()(&ctx)(&err)
db.bandwidth.mu.RLock()
beginningOfMonth := getBeginningOfMonth(time.Now().UTC())
if beginningOfMonth.Equal(db.bandwidth.usedSince) {
defer db.bandwidth.mu.RUnlock()
return db.bandwidth.used, nil
}
db.bandwidth.mu.RUnlock()
usage, err := db.Summary(ctx, beginningOfMonth, time.Now())
if err != nil {
return 0, err
}
// Just return the usage, don't update the cache. Let add handle updates
return usage.Total(), nil
}
// Summary returns summary of bandwidth usages
func (db *bandwidthdb) Summary(ctx context.Context, from, to time.Time) (_ *bandwidth.Usage, err error) {
defer mon.Task()(&ctx)(&err)
usage := &bandwidth.Usage{}
rows, err := db.db.Query(`
SELECT action, sum(amount)
FROM bandwidth_usage
WHERE ? <= created_at AND created_at <= ?
GROUP BY action`, from, to)
if err != nil {
if err == sql.ErrNoRows {
return usage, nil
}
return nil, ErrInfo.Wrap(err)
}
defer func() { err = errs.Combine(err, rows.Close()) }()
for rows.Next() {
var action pb.PieceAction
var amount int64
err := rows.Scan(&action, &amount)
if err != nil {
return nil, ErrInfo.Wrap(err)
}
usage.Include(action, amount)
}
return usage, ErrInfo.Wrap(rows.Err())
}
// SummaryBySatellite returns summary of bandwidth usage grouping by satellite.
func (db *bandwidthdb) SummaryBySatellite(ctx context.Context, from, to time.Time) (_ map[storj.NodeID]*bandwidth.Usage, err error) {
defer mon.Task()(&ctx)(&err)
entries := map[storj.NodeID]*bandwidth.Usage{}
rows, err := db.db.Query(`
SELECT satellite_id, action, sum(amount)
FROM bandwidth_usage
WHERE ? <= created_at AND created_at <= ?
GROUP BY satellite_id, action`, from, to)
if err != nil {
if err == sql.ErrNoRows {
return entries, nil
}
return nil, ErrInfo.Wrap(err)
}
defer func() { err = errs.Combine(err, rows.Close()) }()
for rows.Next() {
var satelliteID storj.NodeID
var action pb.PieceAction
var amount int64
err := rows.Scan(&satelliteID, &action, &amount)
if err != nil {
return nil, ErrInfo.Wrap(err)
}
entry, ok := entries[satelliteID]
if !ok {
entry = &bandwidth.Usage{}
entries[satelliteID] = entry
}
entry.Include(action, amount)
}
return entries, ErrInfo.Wrap(rows.Err())
}
func getBeginningOfMonth(now time.Time) time.Time {
y, m, _ := now.Date()
return time.Date(y, m, 1, 0, 0, 0, 0, time.Now().UTC().Location())
}