minio/cmd/license-update.go
2023-01-17 05:08:15 +05:30

123 lines
3.4 KiB
Go

// Copyright (c) 2015-2023 MinIO, Inc.
//
// This file is part of MinIO Object Storage stack
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package cmd
import (
"context"
"fmt"
"math/rand"
"time"
"github.com/minio/minio/internal/logger"
"github.com/tidwall/gjson"
)
const (
licUpdateCycle = 24 * time.Hour * 30
licRenewURL = "https://subnet.min.io/api/cluster/renew-license"
licRenewURLDev = "http://localhost:9000/api/cluster/renew-license"
)
// initlicenseUpdateJob start the periodic license update job in the background.
func initLicenseUpdateJob(ctx context.Context, objAPI ObjectLayer) {
go func() {
r := rand.New(rand.NewSource(time.Now().UnixNano()))
// Leader node (that successfully acquires the lock inside licenceUpdaterLoop)
// will keep performing the license update. If the leader goes down for some
// reason, the lock will be released and another node will acquire it and
// take over because of this loop.
for {
licenceUpdaterLoop(ctx, objAPI)
// license update stopped for some reason.
// sleep for some time and try again.
duration := time.Duration(r.Float64() * float64(time.Hour))
if duration < time.Second {
// Make sure to sleep atleast a second to avoid high CPU ticks.
duration = time.Second
}
time.Sleep(duration)
}
}()
}
func licenceUpdaterLoop(ctx context.Context, objAPI ObjectLayer) {
ctx, cancel := globalLeaderLock.GetLock(ctx)
defer cancel()
licenseUpdateTimer := time.NewTimer(licUpdateCycle)
defer licenseUpdateTimer.Stop()
for {
select {
case <-ctx.Done():
return
case <-licenseUpdateTimer.C:
if globalSubnetConfig.Registered() {
performLicenseUpdate(ctx, objAPI)
}
// Reset the timer for next cycle.
licenseUpdateTimer.Reset(licUpdateCycle)
}
}
}
func performLicenseUpdate(ctx context.Context, objectAPI ObjectLayer) {
// the subnet license renewal api renews the license only
// if required e.g. when it is expiring soon
url := licRenewURL
if globalIsCICD {
url = licRenewURLDev
}
resp, err := globalSubnetConfig.Post(url, nil)
if err != nil {
logger.LogIf(ctx, fmt.Errorf("error from %s: %w", url, err))
return
}
r := gjson.Parse(resp).Get("license")
if r.Index == 0 {
logger.LogIf(ctx, fmt.Errorf("license not found in response from %s", url))
return
}
lic := r.String()
if lic == globalSubnetConfig.License {
// license hasn't changed.
return
}
kv := "subnet license=" + lic
result, err := setConfigKV(ctx, objectAPI, []byte(kv))
if err != nil {
logger.LogIf(ctx, fmt.Errorf("error setting subnet license config: %w", err))
return
}
if result.Dynamic {
if err := applyDynamicConfigForSubSys(GlobalContext, objectAPI, result.Cfg, result.SubSys); err != nil {
logger.LogIf(ctx, fmt.Errorf("error applying subnet dynamic config: %w", err))
return
}
globalNotificationSys.SignalConfigReload(result.SubSys)
}
}