/* This file is part of VoltDB.
* Copyright (C) 2008-2017 VoltDB Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
package jsonsessions;
import org.voltdb.ProcInfo;
import org.voltdb.SQLStmt;
import org.voltdb.VoltProcedure;
import org.voltdb.VoltTable;
public class Login extends VoltProcedure {
// potential return codes (must be synced with client code)
public static final long LOGIN_SUCCESSFUL = 0;
public static final long LOGIN_FAIL = 1;
public static final long LOGIN_TIMEOUT = 2;
// Checks if the vote is for a valid user
public final SQLStmt findUserStmt = new SQLStmt(
"SELECT username FROM user_session_table WHERE username = ?;");
// Update the last accessed time for a user
public final SQLStmt updateUserStmt = new SQLStmt(
"UPDATE user_session_table SET last_accessed = ? WHERE username = ?;");
// Add a logged in user
public final SQLStmt insertUserStmt = new SQLStmt(
"INSERT INTO user_session_table (username, password, global_session_id, last_accessed, json_data) VALUES (?, ?, ?, ?, ?);");
public long run(String username, String password, String json) {
// See if the user is already logged in.
voltQueueSQL(findUserStmt, username);
VoltTable[] selectResults = voltExecuteSQL();
if (selectResults[0].advanceRow() == true) {
// Update the last time this account was accessed (for timeout purposes)
voltQueueSQL(updateUserStmt, this.getTransactionTime(), username);
} else {
// Do the login, create an entry in the session table. Use VoltDB's getUniqueID() api to create a deterministic unique ID for the login.
voltQueueSQL(insertUserStmt, username, password, Long.toString(getUniqueId()), this.getTransactionTime(), json);
}
voltExecuteSQL();
return LOGIN_SUCCESSFUL;
}
}