mirror of
https://github.com/minio/minio
synced 2024-07-22 02:44:15 +00:00
95bf4a57b6
Create new code paths for multiple subsystems in the code. This will make maintaing this easier later. Also introduce bugLogIf() for errors that should not happen in the first place.
118 lines
3.3 KiB
Go
118 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/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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subnetLogIf(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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internalLogIf(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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internalLogIf(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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subnetLogIf(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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