// 1. I need to have all shards that are configured for this app
// 2. I need to know how to decode the uuid and understand a shard id out of it
// 3. I need to know a shard resolution strategy
/// <summary>
///
/// </summary>
/// <param name="appName"></param>
public AppContext(string appName)
{
_app = new App();
_app.ApplicationName = appName;
var dataReader = new DataFactory().GetdataReader(FetchMode.Sql);
var shards = dataReader.GetAllShardByAppname(_app.ApplicationName);
_app.Shards = shards;
}
/// <summary>
/// this method will set up schema for new user, will return unique id to application
/// </summary>
/// <returns></returns>
public long SetupSchema(ShardStartegyData dto)
{
// call ShardStrategy with app name
// Strategy will return me shardid.
// call cedar data method which would execute schema def statements in above shard id
var dataReader = new DataFactory().GetdataReader(FetchMode.Sql);
dto.App = _app;
var shardId = ShardStrategy.ShardSelectionStrategy.SelectShardIdForExistingObject(dto);
var worker = new IdWorker(shardId);
var uniqueId = worker.GetUniqueId();
//_currentShard = uniqueId;
var appSchema = dataReader.GetAppSchema(shardId);
var cedarSession = new CedarSession(uniqueId) { EnableTrasaction = true };
cedarSession.SetupSchema(appSchema);
cedarSession.Close();
new DataFactory().GetdataReader(FetchMode.Sql).UpdateShard(shardId);
_app.Shards = new DataFactory().GetdataReader(FetchMode.Sql).GetAllShardByAppname(_app.ApplicationName);
return uniqueId;
}
public void GetShardStrategyById()
{
IDataReader dataReader = new DataFactory().GetdataReader(FetchMode.Sql);
IList<ShardWile> shardWileList = dataReader.GetShardStrategyById(0);
Assert.IsTrue(shardWileList != null);
}
public void GetShardById()
{
IDataReader dataReader = new DataFactory().GetdataReader(FetchMode.Sql);
Shard shard = dataReader.GetShardById(0);
Assert.IsTrue(shard != null );
}
public void GetAllShardByAppname()
{
IDataReader dataReader = new DataFactory().GetdataReader(FetchMode.Sql);
List<Shard> shardList = dataReader.GetAllShardByAppname("CxC");
Assert.IsTrue(shardList.Count > 0);
}
public void GetAllShard()
{
IDataReader dataReader = new DataFactory().GetdataReader(FetchMode.Xml);
List<Shard> shardList = dataReader.GetAllShard();
Assert.IsTrue(shardList.Count > 0 );
}