/** @param session */
public void readMataData(Session session, ObjectNode matadataNode) {
for (int retry = 0; ; retry++) {
try {
Connection conn = null;
String shardName = matadataNode.getShardName();
String tableName = matadataNode.getQualifiedObjectName();
String catalog = matadataNode.getCatalog();
String schema = matadataNode.getSchema();
try {
JdbcRepository dsRepository = (JdbcRepository) database.getRepository();
DataSource dataSource = dsRepository.getDataSourceByShardName(shardName);
conn = dataSource.getConnection();
tableName = database.identifier(tableName);
if (catalog != null) {
catalog = database.identifier(catalog);
}
if (schema != null) {
schema = database.identifier(schema);
}
tryReadMetaData(conn, catalog, schema, tableName);
return;
} catch (Exception e) {
throw DbException.convert(e);
} finally {
JdbcUtils.closeSilently(conn);
}
} catch (DbException e) {
if (retry >= MAX_RETRY) {
throw e;
}
}
}
}
public ConnectionHolder(Session session) {
Database database = session.getDatabase();
JdbcRepository repository = (JdbcRepository) database.getRepository();
this.session = session;
this.trace = database.getTrace(Trace.TRANSACTION);
this.target = repository.getConnectionProvider();
String mode = database.getSettings().transactionMode;
this.holderStrategy = transactionMode(mode);
}
protected Connection applyConnection(boolean readOnly, String username, String password)
throws SQLException {
List<DataSourceMarker> tryList = New.arrayList();
DataSourceMarker selected = dataSource.doRoute(readOnly);
while (selected != null) {
try {
tryList.add(selected);
return (username != null)
? database.haGet(selected, username, password)
: database.haGet(selected);
} catch (SQLException e) {
selected = dataSource.doRoute(readOnly, tryList);
}
}
throw new SQLException("No avaliable datasource in shard " + dataSource);
}
/**
* @param database
* @param dataSource
* @param connection
* @param trace
* @throws SQLException
*/
protected SmartSupport(JdbcRepository database, SmartDataSource dataSource) {
this.database = database;
this.dataSource = dataSource;
this.trace = database.getTrace();
}