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Client.java
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Client.java
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import java.util.Scanner;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.util.InputMismatchException;
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
/** Client class
*
* @author Kerly Titus
*/
public class Client extends Thread {
private static int numberOfTransactions; /* Number of transactions to process */
private static int maxNbTransactions; /* Maximum number of transactions */
private static Transactions [] transaction; /* Transactions to be processed */
private String clientOperation; /* sending or receiving */
/** Constructor method of Client class
*
* @return
* @param
*/
Client(String operation)
{
if (operation.equals("sending"))
{
System.out.println("\n Initializing client sending application ...");
numberOfTransactions = 0;
maxNbTransactions = 100;
transaction = new Transactions[maxNbTransactions];
clientOperation = operation;
System.out.println("\n Initializing the transactions ... ");
readTransactions();
System.out.println("\n Connecting client to network ...");
String cip = Network.getClientIP();
if (!(Network.connect(cip)))
{ System.out.println("\n Terminating client application, network unavailable");
System.exit(0);
}
}
else
if (operation.equals("receiving"))
{
System.out.println("\n Initializing client receiving application ...");
clientOperation = operation;
}
}
/**
* Accessor method of Client class
*
* @return numberOfTransactions
* @param
*/
public int getNumberOfTransactions()
{
return numberOfTransactions;
}
/**
* Mutator method of Client class
*
* @return
* @param nbOfTrans
*/
public void setNumberOfTransactions(int nbOfTrans)
{
numberOfTransactions = nbOfTrans;
}
/**
* Accessor method of Client class
*
* @return clientOperation
* @param
*/
public String getClientOperation()
{
return clientOperation;
}
/**
* Mutator method of Client class
*
* @return
* @param operation
*/
public void setClientOperation(String operation)
{
clientOperation = operation;
}
/**
* Reading of the transactions from an input file
*
* @return
* @param
*/
public void readTransactions()
{
Scanner inputStream = null; /* Transactions input file stream */
int i = 0; /* Index of transactions array */
try
{
inputStream = new Scanner(new FileInputStream("transaction2.txt"));
}
catch(FileNotFoundException e)
{
System.out.println("File transaction.txt was not found");
System.out.println("or could not be opened.");
System.exit(0);
}
while (inputStream.hasNextLine( ))
{
try
{ transaction[i] = new Transactions();
transaction[i].setAccountNumber(inputStream.next()); /* Read account number */
transaction[i].setOperationType(inputStream.next()); /* Read transaction type */
transaction[i].setTransactionAmount(inputStream.nextDouble()); /* Read transaction amount */
transaction[i].setTransactionStatus("pending"); /* Set current transaction status */
i++;
}
catch(InputMismatchException e)
{
System.out.println("Line " + i + "file transactions.txt invalid input");
System.exit(0);
}
}
setNumberOfTransactions(i); /* Record the number of transactions processed */
System.out.println("\n DEBUG : Client.readTransactions() - " + getNumberOfTransactions() + " transactions processed");
inputStream.close( );
}
/**
* Sending the transactions to the server
*
* @return
* @param
*/
public void sendTransactions() throws InterruptedException
{
int i = 0; /* index of transaction array */
while (i < getNumberOfTransactions())
{
while(Network.getInBufferStatus().equals("full")){
//Thread.yield();
}
transaction[i].setTransactionStatus("sent"); /* Set current transaction status */
System.out.println("\n DEBUG : Client.sendTransactions() - sending transaction on account " + transaction[i].getAccountNumber());
Network.send(transaction[i]); /* Transmit current transaction */
i++;
}
}
/**
* Receiving the completed transactions from the server
*
* @return
* @param transact
*/
public void receiveTransactions(Transactions transact) throws InterruptedException
{
int i = 0; /* Index of transaction array */
while (i < getNumberOfTransactions())
{
while(Network.getOutBufferStatus().equals("empty")){
//Thread.yield();
}
Network.receive(transact); /* Receive updated transaction from the network buffer */
System.out.println("\n DEBUG : Client.receiveTransactions() - receiving updated transaction on account " + transact.getAccountNumber());
System.out.println(transact); /* Display updated transaction */
i++;
}
}
/**
* Create a String representation based on the Client Object
*
* @return String representation
* @param
*/
public String toString()
{
return ("\n client IP " + Network.getClientIP() + " Connection status" + Network.getClientConnectionStatus() + "Number of transactions " + getNumberOfTransactions());
}
/** Code for the run method
*
* @return
* @param
*/
public void run() {
Transactions transact = new Transactions();
long sendClientStartTime, sendClientEndTime, receiveClientStartTime, receiveClientEndTime;
if (clientOperation.equals("sending")) {
// Sending client process
sendClientStartTime = System.currentTimeMillis();
try {
sendTransactions(); // Send transactions
} catch (InterruptedException e) {
System.out.println("Sending interrupted");
}
sendClientEndTime = System.currentTimeMillis();
System.out.println("\n Terminating client sending thread - Running time: " + (sendClientEndTime - sendClientStartTime) + " ms");
} else if (clientOperation.equals("receiving")) {
// Receiving client process
receiveClientStartTime = System.currentTimeMillis();
try {
receiveTransactions(transact); // Receive transactions
} catch (InterruptedException e) {
System.out.println("Receiving interrupted");
}
receiveClientEndTime = System.currentTimeMillis();
System.out.println("\n Terminating client receiving thread - Running time: " + (receiveClientEndTime - receiveClientStartTime) + " ms");
// Disconnect client after receiving transactions
Network.disconnect(Network.getClientIP());
}
}
}