Fix: Repair randomized timer for first-time intranet updates

* When switching from public network to intranet, force-refresh the timer with a randomized value.
* Use a randomized value for the initial timer upon each restart, then switch to fixed values for subsequent timer initiations

Bug: https://pms.uniontech.com/bug-view-355587.html

Author: xml

docs/lastoreAutoCheck定时器策略.md

@@ -0,0 +1,10 @@
+lastoreAutocheck.timer定时器跟两个设定值有关系：CheckInterval和StartCheckRange有密切关系
+- CheckInterval是一个固定值
+- 是一个范围值，用来在这个返回生成一个随机值
+
+公网行为：
+系统第一次开机(装完机后第一次触发检查更新前都算，主要依据就是lastCheckTime的值，如果是一个空值，则认为是第一次启动)，则直接使用随机值来设定定时器，之后都使用固定值+随机值的组合来设置定时器，关机不影响时间计算。意思就是说，下次启动后，会与上次检查的时间进行比较，不足时间则补足剩余时间+随机值作为这次定时器，>=7天则直接使用随机值作为定时器。
+
+私网行为：
+- 每次系统启动的时候第一次定时器是一个StartCheckRange中的随机值，后面按照固定值CheckInterval轮询。
+- 当从公网切换到私网的时候，需要当成第一次启动来处理，因此需要设置一个标志来表明当前是第一次启动。

src/internal/config/config.go

@@ -221,7 +221,7 @@ const (
 	dSettingsKeySecurityRepoType                     = "security-repo-type"
 	dSettingsKeyPlatformRepoComponents               = "platform-repo-components"
 	DSettingsKeyIncrementalUpdate                    = "incremental-update"
-	dSettingsKeyIntranetUpdate                       = "intranet-update"
+	DSettingsKeyIntranetUpdate                       = "intranet-update"
 	dSettingsKeyGetHardwareIdByHelper                = "hardware-id-from-helper"
 	dSettingsKeyDeliveryRemoteDownloadGlobalLimit    = "delivery-remote-download-global-limit"
 	dSettingsKeyDeliveryRemoteUploadGlobalLimit      = "delivery-remote-upload-global-limit"
@@ -309,7 +309,7 @@ func getConfigFromDSettings() *Config {
 		c.IncrementalUpdate = v.Value().(bool)
 	}
 
-	v, err = c.dsLastoreManager.Value(0, dSettingsKeyIntranetUpdate)
+	v, err = c.dsLastoreManager.Value(0, DSettingsKeyIntranetUpdate)
 	if err != nil {
 		logger.Warning(err)
 	} else {
@@ -793,12 +793,20 @@ func getConfigFromDSettings() *Config {
 	_, err = c.dsLastoreManager.ConnectValueChanged(func(key string) {
 		logger.Infof("config update: key=%s", key)
 		switch key {
-		case dSettingsKeyIntranetUpdate:
-			v, err = c.dsLastoreManager.Value(0, dSettingsKeyIntranetUpdate)
+		case DSettingsKeyIntranetUpdate:
+			v, err = c.dsLastoreManager.Value(0, DSettingsKeyIntranetUpdate)
 			if err != nil {
 				logger.Warning(err)
 			} else {
-				c.IntranetUpdate = v.Value().(bool)
+				oldValue := c.PlatformUpdate
+				newValue := v.Value().(bool)
+				c.IntranetUpdate = newValue
+				c.dsettingsChangedCbMapMu.Lock()
+				cb := c.dsettingsChangedCbMap[key]
+				if cb != nil {
+					go cb(oldValue, newValue)
+				}
+				c.dsettingsChangedCbMapMu.Unlock()
 			}
 		case DSettingsKeyPlatformUpdate:
 			v, err = c.dsLastoreManager.Value(0, DSettingsKeyPlatformUpdate)
@@ -1073,6 +1081,11 @@ func (c *Config) SetAllowInstallRemovePkgExecPaths(paths []string) error {
 //	return c.save(dSettingsKeyNeedDownloadSize, size)
 // }
 
+func (c *Config) SetLastCheckTime(lastCheckTime time.Time) error {
+	c.LastCheckTime = lastCheckTime
+	return c.save(dSettingsKeyLastCheckTime, c.LastCheckTime.Format(configTimeLayout))
+}
+
 func (c *Config) SetDownloadSpeedLimitConfig(config string) error {
 	c.DownloadSpeedLimitConfig = config
 	return c.save(dSettingsKeyDownloadSpeedLimit, config)

src/lastore-daemon/manager.go

@@ -111,6 +111,8 @@ type Manager struct {
 	logFds     []*os.File
 	logFdsMu   sync.Mutex
 	logTmpFile *os.File
+
+	isAutoCheckTimerFirstRun bool
 }
 
 /*
@@ -243,6 +245,20 @@ func (m *Manager) initDSettingsChangedHandle() {
 			logger.Info("AutoDownloadUpdates changed to:", autoDownloadUpdates)
 		}
 	})
+	m.config.ConnectConfigChanged(config.DSettingsKeyIntranetUpdate, func(oldValue, newValue interface{}) {
+		intranetUpdate := newValue.(bool)
+		if intranetUpdate {
+			// 当开启内网更新时，将上次检查时间设置为0，并重新触发lastoreAutoCheck定时器
+			if err := m.config.SetLastCheckTime(time.Unix(0, 0)); err != nil {
+				logger.Warningf("SetLastCheckTime failed: %v", err)
+			}
+			m.isAutoCheckTimerFirstRun = true
+			if err := m.updateAutoCheckSystemUnit(); err != nil {
+				logger.Warningf("updateAutoCheckSystemUnit failed: %v", err)
+			}
+			m.isAutoCheckTimerFirstRun = false
+		}
+	})
 }
 
 // recreateSystem 重新创建system对象，用于incremental-update热更新
@@ -308,7 +324,11 @@ func (m *Manager) TryToStartAutoCheck() {
 	if isTimerUnitFileExists(lastoreAutoCheck) {
 		return
 	}
-	m.updateAutoCheckSystemUnit()
+	m.isAutoCheckTimerFirstRun = true
+	if err := m.updateAutoCheckSystemUnit(); err != nil {
+		logger.Warning(err)
+	}
+	m.isAutoCheckTimerFirstRun = false
 }
 
 func (m *Manager) delUpdatePackage(sender dbus.Sender, jobName string, packages string) (*Job, error) {

src/lastore-daemon/manager_unit.go

@@ -320,29 +320,30 @@ func (m *Manager) handleAbortAutoDownload() {
 func (m *Manager) getNextUpdateDelay() time.Duration {
 	elapsed := time.Since(m.config.LastCheckTime)
 	remained := m.config.CheckInterval - elapsed
-	if remained < 0 {
+	if remained < _minDelayTime {
+		// ensure delay at least have 10 seconds
 		return _minDelayTime
 	}
-	// ensure delay at least have 10 seconds
-	return remained + _minDelayTime
+
+	return remained
 }
 
 func (m *Manager) getNextAutoCheckDelay() int {
-	checkInterval := m.config.CheckInterval
-	if checkInterval < 0 {
-		checkInterval = 0
-	}
-
-	elapsed := time.Since(m.config.LastCheckTime)
-	remained := int((checkInterval - elapsed) / time.Second)
-	if remained < 0 {
-		remained = 0
+	if m.config.IntranetUpdate {
+		if m.isAutoCheckTimerFirstRun {
+			randomDelay := rand.New(rand.NewSource(time.Now().UnixNano())).Intn(m.config.StartCheckRange[1]-m.config.StartCheckRange[0]) + m.config.StartCheckRange[0]
+			return randomDelay
+		} else {
+			checkInterval := m.config.CheckInterval
+			if checkInterval < 0 {
+				checkInterval = 0
+			}
+			return int((checkInterval) / time.Second)
+		}
+	} else {
+		randomDelay := rand.New(rand.NewSource(time.Now().UnixNano())).Intn(m.config.StartCheckRange[1]-m.config.StartCheckRange[0]) + m.config.StartCheckRange[0]
+		return int(m.getNextUpdateDelay()/time.Second) + randomDelay
 	}
-
-	randomDelay := rand.New(rand.NewSource(time.Now().UnixNano())).Intn(m.config.StartCheckRange[1]-m.config.StartCheckRange[0]) + m.config.StartCheckRange[0]
-	autoCheckDelay := remained + randomDelay
-	logger.Infof("get next auto check delay, StartCheckRange=%v, randomDelay=%d, autoCheckDelay=%d", m.config.StartCheckRange, randomDelay, autoCheckDelay)
-	return autoCheckDelay
 }
 
 // isAllowedToTriggerSystemEvent checks if the uid is allowed to trigger system events