public static IServiceCollection AddElasticSearchClient(this IServiceCollection services, Configuration configuration)
{
var pool = new StaticConnectionPool(configuration.NodesUri);
var settings = new ConnectionSettings(pool);
settings.DefaultIndex(configuration.DefaultIndex);
_client = new ElasticClient(settings);
EnsureIndex(_client, _client.ConnectionSettings.DefaultIndex);
services.AddSingleton(_client);
services.AddScoped <IIndexService, IndexService>();
services.AddScoped <ITriggerService, TriggerService>();
IHookFunction hookFunction = new HookFunction();
services.AddSingleton(hookFunction);
services.AddSingleton <IExecuteTrigger, ExecuteTrigger>();
services.BuildServiceProvider().GetService <IExecuteTrigger>();
_client.Mapping <Group, GroupDTO>(s => s.SetType("group")
.SetKeyProperty(item => item.ID)
.SetMethodDelete(DeleteGroupIndex)
.SetMakeMethod(MakeMethod.Delete, MakeMethod.Insert)
.SetQuery(QueryExpression.BuildQuery <Group>()
.Include(item => item.GroupRoles)
.ThenInclude(item => item.Role)
.Include(item => item.GroupUsers)
.ThenInclude(item => item.User)));
return(services);
}