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119 lines
3.3 KiB
Go
119 lines
3.3 KiB
Go
// Copyright (c) 2015-2023 MinIO, Inc.
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//
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// This file is part of MinIO Object Storage stack
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package cmd
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import (
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"context"
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"fmt"
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"math/rand"
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"time"
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"github.com/minio/minio/internal/logger"
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"github.com/tidwall/gjson"
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)
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const (
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licUpdateCycle = 24 * time.Hour * 30
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licRenewPath = "/api/cluster/renew-license"
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)
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// initlicenseUpdateJob start the periodic license update job in the background.
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func initLicenseUpdateJob(ctx context.Context, objAPI ObjectLayer) {
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go func() {
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r := rand.New(rand.NewSource(time.Now().UnixNano()))
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// Leader node (that successfully acquires the lock inside licenceUpdaterLoop)
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// will keep performing the license update. If the leader goes down for some
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// reason, the lock will be released and another node will acquire it and
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// take over because of this loop.
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for {
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licenceUpdaterLoop(ctx, objAPI)
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// license update stopped for some reason.
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// sleep for some time and try again.
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duration := time.Duration(r.Float64() * float64(time.Hour))
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if duration < time.Second {
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// Make sure to sleep at least a second to avoid high CPU ticks.
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duration = time.Second
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}
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time.Sleep(duration)
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}
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}()
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}
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func licenceUpdaterLoop(ctx context.Context, objAPI ObjectLayer) {
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ctx, cancel := globalLeaderLock.GetLock(ctx)
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defer cancel()
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licenseUpdateTimer := time.NewTimer(licUpdateCycle)
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defer licenseUpdateTimer.Stop()
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for {
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select {
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case <-ctx.Done():
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return
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case <-licenseUpdateTimer.C:
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if globalSubnetConfig.Registered() {
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performLicenseUpdate(ctx, objAPI)
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}
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// Reset the timer for next cycle.
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licenseUpdateTimer.Reset(licUpdateCycle)
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}
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}
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}
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func performLicenseUpdate(ctx context.Context, objectAPI ObjectLayer) {
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// the subnet license renewal api renews the license only
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// if required e.g. when it is expiring soon
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url := globalSubnetConfig.BaseURL + licRenewPath
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resp, err := globalSubnetConfig.Post(url, nil)
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if err != nil {
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logger.LogIf(ctx, fmt.Errorf("error from %s: %w", url, err))
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return
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}
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r := gjson.Parse(resp).Get("license_v2")
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if r.Index == 0 {
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logger.LogIf(ctx, fmt.Errorf("license not found in response from %s", url))
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return
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}
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lic := r.String()
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if lic == globalSubnetConfig.License {
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// license hasn't changed.
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return
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}
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kv := "subnet license=" + lic
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result, err := setConfigKV(ctx, objectAPI, []byte(kv))
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if err != nil {
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logger.LogIf(ctx, fmt.Errorf("error setting subnet license config: %w", err))
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return
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}
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if result.Dynamic {
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if err := applyDynamicConfigForSubSys(GlobalContext, objectAPI, result.Cfg, result.SubSys); err != nil {
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logger.LogIf(ctx, fmt.Errorf("error applying subnet dynamic config: %w", err))
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return
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}
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globalNotificationSys.SignalConfigReload(result.SubSys)
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}
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}
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