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launch properly if previous session crashed and left lock file in place

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This commit is contained in:
Drew Weymouth
2023-06-24 09:31:53 -07:00
parent bc10e7f3d2
commit 4d88e3c0f6
1 changed files with 10 additions and 3 deletions
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backend/app.go
+10 -3
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@@ -53,11 +53,18 @@ func (a *App) VersionTag() string {
func StartupApp(appName, appVersionTag, configFile, latestReleaseURL string) (*App, error) {
sessionPath := configdir.LocalConfig(appName, sessionDir)
if _, err := os.Stat(path.Join(sessionPath, sessionLockFile)); err == nil {
log.Println("Another instance is running. Reactivating it and exiting...")
if f, err := os.Create(path.Join(sessionPath, sessionActivateFile)); err == nil {
log.Println("Another instance is running. Reactivating it...")
reactivateFile := path.Join(sessionPath, sessionActivateFile)
if f, err := os.Create(reactivateFile); err == nil {
f.Close()
}
return nil, ErrAnotherInstance
time.Sleep(750 * time.Millisecond)
if _, err := os.Stat(reactivateFile); err == nil {
log.Println("No other instance responded. Starting as normal...")
os.RemoveAll(sessionPath)
} else {
return nil, ErrAnotherInstance
}
}
log.Printf("Starting %s...", appName)