private static void OnRestore(object?sender, RestoreEventArgs e)
{
using var db = new BloggingContext();
var articlesElement = e.Root.GetProperty("article");
foreach (var article in articlesElement.EnumerateArray())
{
var author = article.GetProperty("author").GetString();
var user = db.Users.FirstOrDefault(u => u.Username == author);
if (user == null)
{
user = new User
{
Username = author
};
db.Users.Add(user);
db.SaveChanges();
}
var createdArticle = new Article
{
Title = article.GetProperty("title").GetString(),
Body = article.GetProperty("body").GetString(),
Timestamp = DateTimeOffset.FromUnixTimeSeconds(article.GetProperty("timestamp").GetInt64())
.UtcDateTime,
Author = user
};
db.Articles.Add(createdArticle);
}
db.SaveChanges();
}
protected override async Task <bool> OnDataLossAsync(RestoreContext restoreCtx, CancellationToken cancellationToken)
{
Log.WriteLine("{0}", $"Partition {GraphEngineStatefulServiceRuntime.Instance.PartitionId} received OnDataLossAsync. Triggering data restore.");
RestoreEventArgs rstArgs = new RestoreEventArgs(restoreCtx, cancellationToken);
RequestRestore(this, rstArgs);
await rstArgs.Wait();
return(true);
}
private void OnServiceFabricRequestRestore(object sender, RestoreEventArgs e)
{
RequestPartitionRestore(sender, e);
}
