async Task Upgrade()
{
var versionFile = await Store.Info(VersionFile);
var md = versionFile == null ? new StoreMd {
Version = new SemVersion(0)
} : await Store.Get <StoreMd>(VersionFile);
var upgradeMethods = GetType().GetMethods()
.Select(m => (m, a: m.GetCustomAttribute <UpgradeAttribute>())).Where(m => m.a != null)
.Select(m => (m.m.Name, Upgrade: new Func <Task>(async() => {
Log.Information("Upgrade {Name} - started", m.m.Name);
var sw = Stopwatch.StartNew();
await(Task) m.m.Invoke(this, new object[] { });
Log.Information("Upgrade {Name} - completed in {Duration}", m.m.Name, sw.Elapsed.HumanizeShort());
}), Version: SemVersion.Parse(m.a.Version)));
var toRun = upgradeMethods
.Where(m => m.Version > md.Version || m.Version == md.Version && !md.Ran.Contains(m.Name))
.OrderBy(m => m.Version).ToArray();
foreach (var run in toRun)
{
await run.Upgrade();
md.Ran.Add(run.Name);
md.Version = run.Version;
await Save(md);
}
}