public MongoPersistProvider(string server, MongoDataBaseName dbName)
{
this.server = server;
this.dbName = dbName;
}
async Task <IPersist> IPeristProvider.CreatePersistAsync(IConfigure Configure, CancellationToken token)
{
string collectionBase = string.Empty;
MongoPersist toReturn = null;
string collectionName = string.Empty;
bool CreateDatabase = this.dbName.DB == MongoDataBaseName.CREATE;
//if database provided, our collection names must be unique, so we factor in applicationname
if (!CreateDatabase)
{
collectionName = string.Format("{0}_{1}", Configure.ApplicationName, "messages");
}
else //if we are creating database, our collectionname can be generic
{
this.dbName = Configure.ApplicationName;
collectionName = "messages";
}
// TODO: test if database exists and that it is not configured for another collection
this.mongoProvider = new MongoProvider(server);
////if not createdatabase, then the one passed in must exist
//if (!CreateDatabase) {
// if (!this.DBExists()) {
// throw new Exception(string.Format("{0} does not exists", this.dbName.DB));
// }
//}
bool exists = await this.CollectionExistsAsync(collectionName, token);
if (exists)
{
toReturn = new MongoPersist(new MongoSettings()
{
ServerName = this.server, DataBaseName = this.dbName.DB, CollectionName = collectionName
});
EndpointConfigPersist <EndPointConfigBase> configReader = new EndpointConfigPersist <EndPointConfigBase>(toReturn);
//get config and ensure its the same
EndPointConfigBase config = await configReader.GetConfigAsync(token);
if (config.ApplicationGUID != Configure.ApplicationGUID)
{
throw new Exception("Collection exists but has already been configured for another process");
}
}
else //if not, we must create
//create collection
{
IMongoDatabase db = this.mongoProvider.GetClient().GetDatabase(dbName.DB);
await db.CreateCollectionAsync(collectionName, null, token);
IMongoCollection <PersistedMessage> collection = db.GetCollection <PersistedMessage>(collectionName);
collection = await this.CreateIndexesAsync(collection, token);
toReturn = new MongoPersist(new MongoSettings()
{
ServerName = this.server, DataBaseName = this.dbName.DB, CollectionName = collectionName
});
EndpointConfigPersist <EndPointConfigBase> configReader = new EndpointConfigPersist <EndPointConfigBase>(toReturn);
EndPointConfigBase config = new EndPointConfigBase()
{
ApplicationGUID = Configure.ApplicationGUID, ApplicationName = Configure.ApplicationName, Version = "1.0"
};
await configReader.UpdateConfigAsync(config, token);
}
return(toReturn);
}
