private void readDataBase() {
try {
logger.traceINFO("Initializing database...");
Class.forName("com.mysql.jdbc.Driver");
connect =
DriverManager.getConnection("jdbc:mysql://localhost/marketdata?" + "user=root&password=");
} catch (Exception e) {
logger.traceERROR(e);
System.exit(0);
}
}
public RealtimeTimer(int timerInterval, int hourStart, int minStart, int hourStop, int minStop) {
this.timerInterval = timerInterval;
Calendar startDateCal = Calendar.getInstance();
startDateCal.set(Calendar.HOUR_OF_DAY, hourStart);
startDateCal.set(Calendar.MINUTE, minStart);
startDateCal.set(Calendar.SECOND, 0);
Calendar endDateCal = Calendar.getInstance();
endDateCal.set(Calendar.HOUR_OF_DAY, hourStop);
endDateCal.set(Calendar.MINUTE, minStop);
endDateCal.set(Calendar.SECOND, 0);
this.startDate = startDateCal;
this.endDate = endDateCal;
logger.traceINFO("start time = " + startDate.getTime().toString());
logger.traceINFO("end time = " + endDate.getTime().toString());
}
public void insertMarketData(String symbol, String price) {
String query =
"INSERT INTO `marketdata`.`market_data` (`ID`, `SYMBOL`, `PRICE`, `TIMESTAMP`) VALUES (NULL, '"
+ symbol
+ "', '"
+ price
+ "', CURRENT_TIMESTAMP);";
logger.traceINFO("Inserting ( " + symbol + ", " + price + " )");
try {
connect.createStatement().execute(query);
} catch (CommunicationsException e) {
readDataBase();
insertMarketData(symbol, price);
} catch (Exception e) {
logger.traceERROR(e);
}
}
public class DatabaseAccess {
private Logger logger = Logger.getInstance();
private Connection connect = null;
private Statement statement = null;
private ResultSet resultSet = null;
public DatabaseAccess() {
readDataBase();
}
public void insertMarketData(String symbol, String price) {
String query =
"INSERT INTO `marketdata`.`market_data` (`ID`, `SYMBOL`, `PRICE`, `TIMESTAMP`) VALUES (NULL, '"
+ symbol
+ "', '"
+ price
+ "', CURRENT_TIMESTAMP);";
logger.traceINFO("Inserting ( " + symbol + ", " + price + " )");
try {
connect.createStatement().execute(query);
} catch (CommunicationsException e) {
readDataBase();
insertMarketData(symbol, price);
} catch (Exception e) {
logger.traceERROR(e);
}
}
private void readDataBase() {
try {
logger.traceINFO("Initializing database...");
Class.forName("com.mysql.jdbc.Driver");
connect =
DriverManager.getConnection("jdbc:mysql://localhost/marketdata?" + "user=root&password=");
} catch (Exception e) {
logger.traceERROR(e);
System.exit(0);
}
}
public void close() {
try {
if (resultSet != null) {
resultSet.close();
}
if (statement != null) {
statement.close();
}
if (connect != null) {
connect.close();
}
} catch (Exception e) {
logger.traceERROR(e);
}
}
}
public void flush() {
String formatString = "| %55s | %9s | %18s |";
// Mind that all rows have the same sizes.
for (int i = 0; i < rows.size(); i++) {
Row row = rows.get(i);
String strOut = String.format(formatString, row.adTitle, row.adPrice, row.status);
// First or last row
if (i == 0) {
Logger.traceINFO(org.apache.commons.lang3.StringUtils.repeat("_", strOut.length()));
}
Logger.traceINFO(strOut);
if (i == rows.size() - 1) {
Logger.traceINFO(org.apache.commons.lang3.StringUtils.repeat("_", strOut.length()));
}
}
}
private boolean checkBounds() {
Calendar nowDate = Calendar.getInstance();
if (startDate.get(Calendar.DATE) < nowDate.get(Calendar.DATE)) {
// Increment day by one.
startDate.add(Calendar.DATE, 1);
endDate.add(Calendar.DATE, 1);
logger.traceINFO("start time = " + startDate.getTime().toString());
logger.traceINFO("end time = " + endDate.getTime().toString());
}
if (nowDate.getTime().after(startDate.getTime())
&& nowDate.getTime().before(endDate.getTime())) {
return true;
} else {
long currentMs = nowDate.getTime().getTime();
if (currentMs - lastCheckBoundsMessageMs > 5000) {
lastCheckBoundsMessageMs = currentMs;
logger.traceINFO("Out of dates bounds");
}
return false;
}
}
public void close() {
try {
if (resultSet != null) {
resultSet.close();
}
if (statement != null) {
statement.close();
}
if (connect != null) {
connect.close();
}
} catch (Exception e) {
logger.traceERROR(e);
}
}
public class RealtimeTimer {
private Logger logger = Logger.getInstance();
private int timerInterval = 1000;
private TimerListener listener = null;
private boolean condition = true;
private Thread timerThread = new Thread(new TimerTask(this));
private Calendar startDate;
private Calendar endDate;
private class TimerTask implements Runnable {
private RealtimeTimer timer;
public TimerTask(RealtimeTimer timer) {
this.timer = timer;
}
@Override
public void run() {
while (condition) {
if (checkBounds() && listener != null) {
listener.onTimerTick(timer);
}
if (timerInterval > 0) {
try {
Thread.sleep(timerInterval);
} catch (InterruptedException e) {
logger.traceERROR(e);
condition = false;
}
}
}
}
}
public void start() {
timerThread.start();
}
public void stop() {
condition = false;
}
public RealtimeTimer(int timerInterval, int hourStart, int minStart, int hourStop, int minStop) {
this.timerInterval = timerInterval;
Calendar startDateCal = Calendar.getInstance();
startDateCal.set(Calendar.HOUR_OF_DAY, hourStart);
startDateCal.set(Calendar.MINUTE, minStart);
startDateCal.set(Calendar.SECOND, 0);
Calendar endDateCal = Calendar.getInstance();
endDateCal.set(Calendar.HOUR_OF_DAY, hourStop);
endDateCal.set(Calendar.MINUTE, minStop);
endDateCal.set(Calendar.SECOND, 0);
this.startDate = startDateCal;
this.endDate = endDateCal;
logger.traceINFO("start time = " + startDate.getTime().toString());
logger.traceINFO("end time = " + endDate.getTime().toString());
}
public void setListener(TimerListener listener) {
this.listener = listener;
}
long lastCheckBoundsMessageMs = System.currentTimeMillis();
private boolean checkBounds() {
Calendar nowDate = Calendar.getInstance();
if (startDate.get(Calendar.DATE) < nowDate.get(Calendar.DATE)) {
// Increment day by one.
startDate.add(Calendar.DATE, 1);
endDate.add(Calendar.DATE, 1);
logger.traceINFO("start time = " + startDate.getTime().toString());
logger.traceINFO("end time = " + endDate.getTime().toString());
}
if (nowDate.getTime().after(startDate.getTime())
&& nowDate.getTime().before(endDate.getTime())) {
return true;
} else {
long currentMs = nowDate.getTime().getTime();
if (currentMs - lastCheckBoundsMessageMs > 5000) {
lastCheckBoundsMessageMs = currentMs;
logger.traceINFO("Out of dates bounds");
}
return false;
}
}
}