/** Servlet initialization method. */
public void init(ServletConfig config) throws ServletException {
super.init(config);
java.util.Enumeration en = config.getInitParameterNames();
while (en.hasMoreElements()) {
String parm = (String) en.nextElement();
String value = config.getInitParameter(parm);
TradeConfig.setConfigParam(parm, value);
}
}
/**
* Main service method for TradeScenarioServlet
*
* @param request Object that encapsulates the request to the servlet
* @param response Object that encapsulates the response from the servlet
*/
public void performTask(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
// Scenario generator for Trade2
char action = ' ';
String userID = null;
// String to create full dispatch path to TradeAppServlet w/ request Parameters
String dispPath = null; // Dispatch Path to TradeAppServlet
String scenarioAction = (String) req.getParameter("action");
if ((scenarioAction != null) && (scenarioAction.length() >= 1)) {
action = scenarioAction.charAt(0);
if (action == 'n') { // null;
try {
resp.setContentType("text/html");
PrintWriter out = new PrintWriter(resp.getOutputStream());
out.println("<HTML><HEAD>TradeScenarioServlet</HEAD><BODY>Hello</BODY></HTML>");
out.close();
return;
} catch (Exception e) {
Log.error(
"trade_client.TradeScenarioServlet.service(...)"
+ "error creating printwriter from responce.getOutputStream",
e);
resp.sendError(
500,
"trade_client.TradeScenarioServlet.service(...): erorr creating and writing to PrintStream created from response.getOutputStream()");
} // end of catch
} // end of action=='n'
}
ServletContext ctx = null;
HttpSession session = null;
try {
ctx = getServletConfig().getServletContext();
// These operations require the user to be logged in. Verify the user and if not logged in
// change the operation to a login
session = req.getSession(true);
userID = (String) session.getAttribute("uidBean");
} catch (Exception e) {
Log.error(
"trade_client.TradeScenarioServlet.service(...): performing "
+ scenarioAction
+ "error getting ServletContext,HttpSession, or UserID from session"
+ "will make scenarioAction a login and try to recover from there",
e);
userID = null;
action = 'l';
}
if (userID == null) {
action = 'l'; // change to login
TradeConfig.incrementScenarioCount();
} else if (action == ' ') {
// action is not specified perform a random operation according to current mix
// Tell getScenarioAction if we are an original user or a registered user
// -- sellDeficits should only be compensated for with original users.
action = TradeConfig.getScenarioAction(userID.startsWith(TradeConfig.newUserPrefix));
}
switch (action) {
case 'q': // quote
dispPath = tasPathPrefix + "quotes&symbols=" + TradeConfig.rndSymbols();
ctx.getRequestDispatcher(dispPath).include(req, resp);
break;
case 'a': // account
dispPath = tasPathPrefix + "account";
ctx.getRequestDispatcher(dispPath).include(req, resp);
break;
case 'u': // update account profile
dispPath = tasPathPrefix + "account";
ctx.getRequestDispatcher(dispPath).include(req, resp);
String fullName = "rnd" + System.currentTimeMillis();
String address = "rndAddress";
String password = "******";
String email = "rndEmail";
String creditcard = "rndCC";
dispPath =
tasPathPrefix
+ "update_profile&fullname="
+ fullName
+ "&password="******"&cpassword="******"&address="
+ address
+ "&email="
+ email
+ "&creditcard="
+ creditcard;
ctx.getRequestDispatcher(dispPath).include(req, resp);
break;
case 'h': // home
dispPath = tasPathPrefix + "home";
ctx.getRequestDispatcher(dispPath).include(req, resp);
break;
case 'l': // login
userID = TradeConfig.getUserID();
String password2 = "xxx";
dispPath = tasPathPrefix + "login&inScenario=true&uid=" + userID + "&passwd=" + password2;
ctx.getRequestDispatcher(dispPath).include(req, resp);
// login is successful if the userID is written to the HTTP session
if (session.getAttribute("uidBean") == null) {
System.out.println("TradeScenario login failed. Reset DB between runs");
}
break;
case 'o': // logout
dispPath = tasPathPrefix + "logout";
ctx.getRequestDispatcher(dispPath).include(req, resp);
break;
case 'p': // portfolio
dispPath = tasPathPrefix + "portfolio";
ctx.getRequestDispatcher(dispPath).include(req, resp);
break;
case 'r': // register
// Logout the current user to become a new user
// see note in TradeServletAction
req.setAttribute("TSS-RecreateSessionInLogout", Boolean.TRUE);
dispPath = tasPathPrefix + "logout";
ctx.getRequestDispatcher(dispPath).include(req, resp);
userID = TradeConfig.rndNewUserID();
String passwd = "yyy";
fullName = TradeConfig.rndFullName();
creditcard = TradeConfig.rndCreditCard();
String money = TradeConfig.rndBalance();
email = TradeConfig.rndEmail(userID);
String smail = TradeConfig.rndAddress();
dispPath =
tasPathPrefix
+ "register&Full Name="
+ fullName
+ "&snail mail="
+ smail
+ "&email="
+ email
+ "&user id="
+ userID
+ "&passwd="
+ passwd
+ "&confirm passwd="
+ passwd
+ "&money="
+ money
+ "&Credit Card Number="
+ creditcard;
ctx.getRequestDispatcher(dispPath).include(req, resp);
break;
case 's': // sell
dispPath = tasPathPrefix + "portfolioNoEdge";
ctx.getRequestDispatcher(dispPath).include(req, resp);
Collection holdings = (Collection) req.getAttribute("holdingDataBeans");
int numHoldings = holdings.size();
if (numHoldings > 0) {
// sell first available security out of holding
Iterator it = holdings.iterator();
boolean foundHoldingToSell = false;
while (it.hasNext()) {
HoldingDataBean holdingData = (HoldingDataBean) it.next();
if (!(holdingData.getPurchaseDate().equals(new java.util.Date(0)))) {
Integer holdingID = holdingData.getHoldingID();
dispPath = tasPathPrefix + "sell&holdingID=" + holdingID;
ctx.getRequestDispatcher(dispPath).include(req, resp);
foundHoldingToSell = true;
break;
}
}
if (foundHoldingToSell) break;
if (Log.doTrace())
Log.trace(
"TradeScenario: No holding to sell -switch to buy -- userID = "
+ userID
+ " Collection count = "
+ numHoldings);
}
// At this point: A TradeScenario Sell was requested with No Stocks in Portfolio
// This can happen when a new registered user happens to request a sell before a buy
// In this case, fall through and perform a buy instead
/* Trade 2.037: Added sell_deficit counter to maintain correct buy/sell mix.
* When a users portfolio is reduced to 0 holdings, a buy is requested instead of a sell.
* This throws off the buy/sell mix by 1. This results in unwanted holding table growth
* To fix this we increment a sell deficit counter to maintain the correct ratio in getScenarioAction
* The 'z' action from getScenario denotes that this is a sell action that was switched from a buy
* to reduce a sellDeficit
*/
if (userID.startsWith(TradeConfig.newUserPrefix) == false) {
TradeConfig.incrementSellDeficit();
}
case 'b': // buy
String symbol = TradeConfig.rndSymbol();
String amount = TradeConfig.rndQuantity() + "";
dispPath = tasPathPrefix + "quotes&symbols=" + symbol;
ctx.getRequestDispatcher(dispPath).include(req, resp);
dispPath = tasPathPrefix + "buy&quantity=" + amount + "&symbol=" + symbol;
ctx.getRequestDispatcher(dispPath).include(req, resp);
break;
} // end of switch statement
}