internal static void SeedElasticsearch(this IApplicationBuilder app)
{
if (app == null)
{
throw new ArgumentNullException(nameof(app));
}
IElasticClient client = app.ApplicationServices.GetService <IElasticClient>();
AppSettings settings = app.ApplicationServices.GetService <AppSettings>();
string index = settings != null &&
settings.ElasticConfig != null &&
string.IsNullOrWhiteSpace(settings.ElasticConfig.DefaultIndex) ?
settings.ElasticConfig.DefaultIndex :
"friends";
var observable = Observable.Create <bool> (async o => {
var elasticHealth = await client.CatHealthAsync();
if (elasticHealth.IsValid)
{
Console.WriteLine("Elasticsearch is UP!");
o.OnNext(true);
o.OnCompleted();
}
else
{
Console.WriteLine("Elasticsearch is down!");
o.OnError(new Exception("Elasticsearch is down"));
}
});
var observer = Observer.Create <bool> (isElasticsearchUp => {
// Remove then create the index
client.DeleteIndex(index);
client.CreateIndex(index, c => c.Mappings(ms => ms.Map <Friend> (m => m.AutoMap())));
// Bulk insert random friends; bulk for performance
client.Bulk((s) => {
return(s.IndexMany(Friend.BuildRandomFriends(10)));
});
});
observable.DelaySubscription(TimeSpan.FromSeconds(1)).Retry(60).Subscribe(observer);
}