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			123 lines
		
	
	
		
			3.4 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
			
		
		
	
	
			123 lines
		
	
	
		
			3.4 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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	licRenewURL    = "https://subnet.min.io/api/cluster/renew-license"
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	licRenewURLDev = "http://localhost:9000/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 atleast 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 := licRenewURL
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	if globalIsCICD {
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		url = licRenewURLDev
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	}
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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")
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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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