/// <summary>
/// Waits for write.lock to disappear for a configured time interval. Timeout: configured with IndexLockFileWaitForRemovedTimeout key.
/// If timeout is exceeded an error is logged and execution continues. For errors at OnStart an email is also sent to a configured address.
/// </summary>
/// <param name="waitType">A parameter that influences the logged error message and email template only.</param>
public static void WaitForWriterLockFileIsReleased(WaitForLockFileType waitType)
{
// check if writer.lock is still there -> if yes, wait for other appdomain to quit or lock to disappear - until a given timeout.
// after timeout is passed, Repository.Start will deliberately attempt to remove lock file on following startup
if (!WaitForWriterLockFileIsReleased())
{
// lock file was not removed by other or current appdomain for the given time interval (onstart: other appdomain might use it, onend: current appdomain did not release it yet)
// onstart -> notify operator and start repository anyway
// onend -> log error, and continue
var template = waitType == WaitForLockFileType.OnEnd ? WRITELOCKREMOVEERRORONENDTEMPLATESTR : WRITELOCKREMOVEERRORTEMPLATESTR;
SnLog.WriteError(string.Format(template, Indexing.IndexLockFileWaitForRemovedTimeout,
AppDomain.CurrentDomain.FriendlyName, AppDomain.CurrentDomain.BaseDirectory));
if (waitType == WaitForLockFileType.OnStart)
{
RepositoryInstance.SendWaitForLockErrorMail();
}
}
}
