/** Adds a connection to the idle pool. */
void toIdle(ManagedPoolItem item) {
try {
if (_maxConnections < _connectionPool.size() || item.isConnectionError()) {
return;
}
ManagedConnection mConn = item.getManagedConnection();
if (mConn == null) {
return;
}
mConn.cleanup();
long now = CurrentTime.getCurrentTime();
if (_idlePool.size() == 0) _idlePoolExpire = now + _idleTimeout;
if (_idlePoolExpire < now) {
// shrink the idle pool when non-empty for idleTimeout
_idlePoolExpire = now + _idleTimeout;
} else if (_idlePool.add(mConn)) {
item = null;
return;
}
} catch (Exception e) {
log.log(Level.FINE, e.toString(), e);
} finally {
notifyConnectionAvailable();
if (item != null) item.destroy();
}
}
private boolean waitForAvailableConnection(long expireTime) {
_availableWaitCount.incrementAndGet();
try {
synchronized (_availableLock) {
// return false only if the timeout occurs before the wait
boolean isAfterWait = false;
while (!isIdleAvailable() && !isCreateAvailable()) {
try {
long now = CurrentTime.getCurrentTimeActual();
long delta = expireTime - now;
if (delta <= 0) return isAfterWait;
Thread.interrupted();
_availableLock.wait(delta);
isAfterWait = true;
} catch (InterruptedException e) {
log.log(Level.FINER, e.toString(), e);
}
}
return true;
}
} finally {
_availableWaitCount.decrementAndGet();
}
}
/** Creates a new connection. */
private UserPoolItem createConnection(
ManagedConnectionFactory mcf,
Subject subject,
ConnectionRequestInfo info,
UserPoolItem oldPoolItem)
throws ResourceException {
boolean isValid = false;
ManagedPoolItem poolItem = null;
try {
ManagedConnection mConn = mcf.createManagedConnection(subject, info);
if (mConn == null)
throw new ResourceException(
L.l("'{0}' did not return a connection from createManagedConnection", mcf));
poolItem = new ManagedPoolItem(this, mcf, mConn);
UserPoolItem userPoolItem;
// Ensure the connection is still valid
userPoolItem = poolItem.toActive(subject, info, oldPoolItem);
if (userPoolItem == null) {
throw new ResourceException(L.l("Connection '{0}' was not valid on creation", poolItem));
}
_connectionCreateCountTotal.incrementAndGet();
synchronized (_connectionPool) {
_connectionPool.add(poolItem);
}
poolItem = null;
isValid = true;
return userPoolItem;
} finally {
if (!isValid) {
_connectionFailCountTotal.incrementAndGet();
_lastFailTime = CurrentTime.getCurrentTime();
}
// server/308b - connection removed on rollback-only, when it's
// theoretically possible to reuse it
if (poolItem != null) poolItem.destroy();
}
}
public void run() {
do {
try {
BufferedReader inFromUser = new BufferedReader(new InputStreamReader(System.in));
File file = new File("time.txt");
FileWriter fw = new FileWriter(file);
Long start = 0l;
Long end = 0l;
BufferedWriter bw = new BufferedWriter(fw);
System.out.println("Enter the preferred choice");
System.out.println("1. REGISTER");
System.out.println("2. LEAVE");
System.out.println("3. SEARCH FOR RFC");
System.out.println("4. KEEPALIVE");
System.out.println("5. Do you want to EXIT");
System.out.println("*********************************************");
choice = Integer.parseInt(inFromUser.readLine());
// System.out.println(" Client requesting for connection");
clientSocket = new Socket("192.168.15.103", 6500);
BufferedReader inFromServer =
new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
PrintWriter outToServer =
new PrintWriter(new OutputStreamWriter(clientSocket.getOutputStream()), true);
// outToServer.println("Peer Requesting Connection");
switch (choice) {
case 4:
outToServer.println(
"KEEP ALIVE P2P-DI Cookieno "
+ cookie
+ " OS: "
+ System.getProperty("os.name")
+ " "
+ "v"
+ System.getProperty("os.version")
+ " USER: "******"user.name"));
System.out.println(inFromServer.readLine());
System.out.println("*********************************************");
break;
case 1:
try {
// System.out.println("Case 1 entered"); // testing
// statement
System.out.println("Please enter your IP addres");
ip = inFromUser.readLine();
outToServer.println(
"REG P2P-DI/1.1 -1 Portno 6789 Hostname "
+ ip
+ " OS: "
+ System.getProperty("os.name")
+ " "
+ "v"
+ System.getProperty("os.version")
+ " USER: "******"user.name"));
cookie = Integer.parseInt(inFromServer.readLine());
TTL = 7200;
System.out.println(inFromServer.readLine());
System.out.print("You are registered at time : ");
ct.currenttime();
System.out.println("Peer " + cookie); // peer cookie value
System.out.println("TTL Value :" + TTL);
System.out.println("*********************************************");
break;
} catch (Exception e) {
}
case 2:
// System.out.println("Case 2 entered"); testing statement
outToServer.println(
"LEAVE P2P-DI Cookieno "
+ cookie
+ " OS: "
+ System.getProperty("os.name")
+ " "
+ "v"
+ System.getProperty("os.version")
+ " USER: "******"user.name"));
// System.out.println("I am in peer"); testing statement
System.out.println(inFromServer.readLine());
System.out.println("*********************************************");
break;
case 3:
outToServer.println(
"PQUERY P2P-DI Cookieno "
+ cookie
+ " Portno 6789"
+ " OS: "
+ System.getProperty("os.name")
+ " "
+ "v"
+ System.getProperty("os.version")
+ " USER: "******"user.name"));
System.out.println("Which RFC number do you wish to have ?");
reqrfc = Integer.parseInt(inFromUser.readLine());
// System.out.println("Entered peer again");
// outToServer.println("KEEP ALIVE cookieno "+cookie);
String details = inFromServer.readLine();
String[] parray = details.split(" ");
int inactive = Integer.parseInt(parray[(parray.length - 1)]);
// System.out.println(darray.length);
if ((parray.length == 3) && (ip.equals(parray[1]))) {
System.out.println("P2P-DI No Active Peers available");
System.out.println("*********************************************");
} else {
System.out.println("****<POPULATING THE ACTIVE PEER LIST>****");
System.out.println();
System.out.println("The active peer list is as follows:");
System.out.println();
String[] darray = details.split(" ");
// System.out.println("Array length"+darray.length);
for (int i = 0; i < (darray.length - 2); i = i + 2) {
acthostname[j] = darray[i + 1];
System.out.println("Hostname :" + acthostname[j]);
actportno[j] = Integer.parseInt(darray[i + 2]);
System.out.println("Portno :" + actportno[j]);
System.out.println("*****************************");
j = j + 1;
}
System.out.println("Connecting to the active peers for its RFC Index");
for (int x = 0; x < j; x++) {
// System.out.println(ip);
if (!(acthostname[x].equals(ip))) {
System.out.println("Connecting to " + acthostname[x]);
Socket peersocket = new Socket(acthostname[x], 6791); // implement
// a for
// loop
BufferedReader inFromPeer =
new BufferedReader(new InputStreamReader(peersocket.getInputStream()));
PrintWriter outToPeer =
new PrintWriter(new OutputStreamWriter(peersocket.getOutputStream()), true);
outToPeer.println("RFCIndex");
// System.out.println(inFromServer.readLine());
// int searchrfc=Integer.parseInt(inFromUser.readLine());
// outToServer.println(searchrfc);
String rfcindex = inFromPeer.readLine(); // tell server to
// send rfc in
// string
String rfcarray[] = rfcindex.split(" ");
// System.out.println(rfcindex);
for (int i = 1; i < rfcarray.length; i = i + 4) {
trfcno[z] = Integer.parseInt(rfcarray[i]);
// System.out.println("RFC number " + trfcno[z]);
trfctitle[z] = rfcarray[i + 1];
// System.out.println("RFC Title " + trfctitle[z]);
tpeername[z] = rfcarray[i + 2];
// System.out.println("Peer Ip Address " + tpeername[z]);
tpTTL[z] = Integer.parseInt(rfcarray[i + 3]);
// System.out.println("TTL value :" + tpTTL[z]);
counter1 = counter1 + 1;
z = z + 1;
}
z = 0;
// if(arraybound==0)
// {
System.arraycopy(trfcno, 0, rfcno, counter2, trfcno.length);
System.arraycopy(trfctitle, 0, rfctitle, counter2, trfctitle.length);
System.arraycopy(tpeername, 0, peername, counter2, tpeername.length);
System.arraycopy(tpTTL, 0, pTTL, counter2, tpTTL.length);
z = 0;
counter2 = counter1;
counter1 = 0;
// arraybound=arraybound+1;
// }
System.out.println();
System.out.println();
System.out.println("*************************************************");
System.out.println("RFC Index received from the Peer");
// System.out.println();
System.out.println("\n-----------------------------------------");
System.out.println("RFC Index System - Display RFC Idex");
System.out.println("-------------------------------------------");
System.out.format(
"%10s%15s%15s%10s", "RFC No", "RFC Title", "Peer Name", "TTL Value");
System.out.println();
// StudentNode current = top;
// while (current != null){
// Student read = current.getStudentNode();
for (int i = 0; i < 60; i++) {
System.out.format(
"%10s%15s%15s%10s",
" " + rfcno[i], rfctitle[i], peername[i], " " + pTTL[i]);
System.out.println();
}
// This will output with a set number of character spaces
// per field, giving the list a table-like quality
// }
peersocket.close();
} // end of if
for (int i = 0; i < rfcno.length; i++) {
if (rfcno[i] == reqrfc) {
String taddress = InetAddress.getByName(peername[i]).toString();
String[] taddr = taddress.split("/");
InetAddress tproperaddress = InetAddress.getByName(taddr[1]);
// System.out.println("Inetaddress" + tproperaddress);
Socket peersocket1 = new Socket(tproperaddress, 6791); // implement
// a
// for
// loop
System.out.println("The connection to the Active Peer is establshed");
BufferedReader inFromP2P =
new BufferedReader(new InputStreamReader(peersocket1.getInputStream()));
PrintWriter outToP2P =
new PrintWriter(
new OutputStreamWriter(peersocket1.getOutputStream()), true);
System.out.println("Requested the RFC to the Active Peer Server");
start = System.currentTimeMillis();
outToP2P.println("GETRFC " + reqrfc);
// Socket socket = ;
try {
// Socket socket = null;
InputStream is = null;
FileOutputStream fos = null;
BufferedOutputStream bos = null;
int bufferSize = 0;
try {
is = peersocket1.getInputStream();
bufferSize = 64;
// System.out.println("Buffer size: " + bufferSize);
} catch (IOException ex) {
System.out.println("Can't get socket input stream. ");
}
try {
fos = new FileOutputStream("E:\\rfc" + reqrfc + "copy.txt");
bos = new BufferedOutputStream(fos);
} catch (FileNotFoundException ex) {
System.out.println("File not found. ");
}
byte[] bytes = new byte[bufferSize];
int count;
while ((count = is.read(bytes)) > 0) {
// System.out.println(count);
bos.write(bytes, 0, count);
}
System.out.println("P2P-DI 200 OK The RFC is copied");
end = System.currentTimeMillis();
System.out.println(
"Total Time to download file " + (end - start) + " milliseconds");
bos.flush();
bos.close();
is.close();
peersocket1.close();
break;
} catch (SocketException e) {
System.out.println("Socket exception");
}
} // end of if
else {
// System.out.println("No Peer with the required RFC could be found");
}
clientSocket.close();
// System.out.println("Connection closed");
bw.close();
fw.close();
} // end of inner for
} // end of outer for
System.out.println("Connection closed");
} // end of switch
} // end of else which checks the inactive conditions
} // end of try
catch (IOException ioe) {
System.out.println("IOException on socket listen: " + ioe);
ioe.printStackTrace();
}
} // end of do
while (choice != 5);
} // end of run
/** Allocates a connection from the idle pool. */
private UserPoolItem allocateIdleConnection(
ManagedConnectionFactory mcf,
Subject subject,
ConnectionRequestInfo info,
UserPoolItem oldPoolItem)
throws ResourceException {
while (_lifecycle.isActive()) {
ManagedConnection mConn;
long now = CurrentTime.getCurrentTime();
if (_lastValidCheckTime + 15000L < now) {
_lastValidCheckTime = now;
if (mcf instanceof ValidatingManagedConnectionFactory) {
ValidatingManagedConnectionFactory vmcf;
vmcf = (ValidatingManagedConnectionFactory) mcf;
validate(vmcf);
}
}
ManagedPoolItem poolItem = null;
while (true) {
// asks the Driver's ManagedConnectionFactory to match an
// idle connection
synchronized (_connectionPool) {
mConn = mcf.matchManagedConnections(_idlePool, subject, info);
// If there are no more idle connections, return null
if (mConn == null) return null;
// remove can fail for threading reasons, so only succeed if it works.
if (!_idlePool.remove(mConn)) {
mConn = null;
}
}
if (mConn != null) {
poolItem = findPoolItem(mConn);
if (poolItem == null)
throw new IllegalStateException(
L.l("Unexpected non-matching PoolItem found for {0}", mConn));
break;
}
}
try {
// Ensure the connection is still valid
UserPoolItem userPoolItem;
userPoolItem = poolItem.toActive(subject, info, oldPoolItem);
if (userPoolItem != null) {
poolItem = null;
return userPoolItem;
}
} finally {
if (poolItem != null) poolItem.destroy();
}
}
return null;
}
/**
* Allocates the pool item for a connection, creating one if necessary.
*
* @param mcf the driver's ManagedConnectionFactory for creating pooled connections
* @param subject the user's authentication credentials
* @param info the user's extra connection information
*/
UserPoolItem allocatePoolConnection(
ManagedConnectionFactory mcf,
Subject subject,
ConnectionRequestInfo info,
UserPoolItem oldPoolItem)
throws ResourceException {
long expireTime = CurrentTime.getCurrentTimeActual() + _connectionWaitTimeout;
if (!_lifecycle.isActive()) {
throw new IllegalStateException(
L.l("{0}: Can't allocate connection because the connection pool is closed.", this));
}
do {
UserPoolItem userPoolItem = allocateIdleConnection(mcf, subject, info, oldPoolItem);
if (userPoolItem != null) return userPoolItem;
// if no item in pool, try to create one
if (startCreateConnection()) {
try {
return createConnection(mcf, subject, info, oldPoolItem);
} finally {
finishCreateConnection();
}
}
} while (_lifecycle.isActive() && waitForAvailableConnection(expireTime));
if (!_lifecycle.isActive())
throw new IllegalStateException(
L.l("{0}: Can't allocate connection because the connection pool is closed.", this));
String message =
(this
+ " pool throttled create timeout"
+ " (pool-size="
+ _connectionPool.size()
+ ", max-connections="
+ _maxConnections
+ ", create-count="
+ _createCount.get()
+ ", max-create-connections="
+ _maxCreateConnections
+ ")");
HealthStatusService.updateCurrentHealthStatus(this, HealthStatus.WARNING, message);
if (startCreateOverflow()) {
try {
return createConnection(mcf, subject, info, oldPoolItem);
} finally {
finishCreateConnection();
}
}
message =
(this
+ " pool overflow failed to create"
+ " (pool-size="
+ _connectionPool.size()
+ ", max-connections="
+ _maxConnections
+ ", create-count="
+ _createCount.get()
+ ", max-create-connections="
+ _maxCreateConnections
+ ")");
HealthStatusService.updateCurrentHealthStatus(this, HealthStatus.CRITICAL, message);
throw new ResourceException(
L.l("Can't create overflow connection connection-max={0}", _maxConnections));
}