public String joinNetwork(String iD, String address)
{
NetworkBean data = new NetworkBean();
CsClient csclient = new CsClient();
Dictionary <String, String> returnAddressIdMap = new Dictionary <String, String>();
foreach (KeyValuePair <string, string> entry in data.getpId_Address())
{
returnAddressIdMap.Add(entry.Key, entry.Value);
}
// call function to send the new address to all nodes
try
{
csclient.addReturnAdressToList(address);
csclient.propagateNewNodeAddress(returnAddressIdMap, iD, address);
}
catch (Exception e) {
// TODO Auto-generated catch block
Console.WriteLine(e.StackTrace);
}
returnAddressIdMap.Add(data.getpId(), data.getAddress());
data.addValuesToDictionary(iD, address);
try
{
csclient.setMasterNode(address);
}
catch (Exception e)
{
// TODO Auto-generated catch block
Console.WriteLine(e.StackTrace);
}
return(data.getpId());
}
//determine the critical section entry
public String RA_RecieveRequest(String iD, String timeStamp)
{
LamportClock clock = new LamportClock();
clock.receiveAction(timeStamp);
NetworkBean data = new NetworkBean();
Console.WriteLine("recieved RA operation request from " + iD + "at time " + DateTime.Now.ToString("HH:mm:ss:fff"));
if (usingCR)
{
Console.WriteLine("Already using CR.. Defer the request " + iD);
deferRequest(iD);
return("Deferred_" + clock.sendAction());
}
//myTimeStamp
if (requestCR)
{
// clock.receiveAction(timeStamp);
//timeStamp = clock.getValue().ToString();
if ((clock.getRequestTimeStamp().ToString()).CompareTo(timeStamp) > 0)
{
Console.WriteLine("already requested CR..my request Time stamp=" + clock.getRequestTimeStamp() + " " + iD + " request timestamp =" + timeStamp);
Console.WriteLine("Send OK Message");
return("OK_" + clock.sendAction());
}
if ((clock.getRequestTimeStamp().ToString()).CompareTo(timeStamp) < 0)
{
Console.WriteLine("already requested CR...my request Time stamp= " + clock.getRequestTimeStamp() + " the node " + iD + " request timestamp is =" + timeStamp);
Console.WriteLine("Deferr the request");
deferRequest(iD);
return("Deferred_" + clock.sendAction());
}
if ((clock.getRequestTimeStamp().ToString()).CompareTo(timeStamp) == 0)
{
if (iD.CompareTo(data.getpId()) > 0)
{
Console.WriteLine("already requested CR...my request Time stamp= " + clock.getRequestTimeStamp() + " the node " + iD + " request timestamp is =" + timeStamp);
Console.WriteLine("Both clocktimes are same...my process id is" + data.getpId() + " the node is is " + iD + " My id is lesser");
Console.WriteLine("Deferr the request");
deferRequest(iD);
return("Deferred_" + clock.sendAction());
}
if (iD.CompareTo(data.getpId()) < 0)
{
Console.WriteLine("already requested CR...my request Time stamp= " + clock.getRequestTimeStamp() + " the node " + iD + " request timestamp is =" + timeStamp);
Console.WriteLine("Both clocktimes are same...my process id is" + data.getpId() + " the node is is " + iD + " My id is higher");
Console.WriteLine("send ok message");
return("OK_" + clock.sendAction());
}
}
}
Console.WriteLine("Not Using or requesting CR... Send OK Message");
return("OK_" + clock.sendAction());
}
public void bullyAlgorithm()
{
NetworkBean data = new NetworkBean();
Boolean noMasterFound = true;
// ServerOperations serveroperation = new ServerOperations();
String response = "";
foreach (KeyValuePair <string, string> entry in data.getpId_Address())
{
String sendAddress = entry.Value;
long pId = Int64.Parse(entry.Key);
long currentNodepId = Int64.Parse(data.getpId());
if (pId > currentNodepId)
{
try
{
elctMasterNode proxy = XmlRpcProxyGen.Create <elctMasterNode>();
proxy.Url = sendAddress;
response = proxy.electMasterNode(data.getpId());
Console.WriteLine(data.getpId() + " Sends the bully election message to :" + sendAddress);
Console.WriteLine("response is :" + response);
}
catch (Exception e)
{
// TODO Auto-generated catch block
Console.WriteLine("no response");
//
removeNode(sendAddress);
data.getpId_Address().Remove(sendAddress);
}
}
if (response.Length > 0)
{
noMasterFound = false;
break;
}
}
// if no master is found then this node is the new master
if (noMasterFound)
{
Console.WriteLine("No master found I am the new master");
data.setMasterPid(data.getpId());
data.setMasterAddress(data.getAddress());
propagateNewMasterNode(data.getpId(), data.getAddress());
}
}
public void checkFinalString()
{
var stopwatch = new Stopwatch();
stopwatch.Start();
while (stopwatch.Elapsed < TimeSpan.FromSeconds(20))
{
}
String message = "";
NetworkBean data = new NetworkBean();
CsClient client = new CsClient();
ServerOperations serveroperaation = new ServerOperations();
Console.WriteLine("**************Reading The final String*******************");
try
{
distribRead proxy = XmlRpcProxyGen.Create <distribRead>();
proxy.Url = data.getMasterAddress();
message = proxy.distributedRead(data.getpId());
Console.WriteLine("the final string is \n");
Console.WriteLine(message + "\n");
}
catch (Exception e)
{
// TODO Auto-generated catch block
Console.WriteLine("Could not send the message succesfully.. node denied connection");
Console.WriteLine("No response from the master node");
Console.WriteLine("Starting election to elect new master node ( Bully algorith)");
client.removeNode(data.getMasterPid());
data.getpId_Address().Remove(data.getMasterPid());
client.bullyAlgorithm();
Console.WriteLine(e.StackTrace);
}
Boolean wordFlag = true;
foreach (String word in data.getAddedWords())
{
if (message.Contains(word))
{
Console.WriteLine(word + " is present in the final string");
}
else
{
Console.WriteLine(word + " is not present in the final string");
wordFlag = false;
}
}
if (wordFlag)
{
Console.WriteLine("all the words are added to the string in master node");
}
//end//
data.getAddedWords().Clear();
data.setNoOfNodesFinishedOperation(0);
data.setStartRicartAgarwala(false);
data.setStartCME(false);
}
public void releaseDeferedRequests()
{
//remove the Ids from queue
//send OK message to the Ids
//queue.Count != 0
while (ricartAgarwalaQueue.Count != 0)
{
String iD = ricartAgarwalaQueue.Dequeue();
NetworkBean data = new NetworkBean();
String address = data.getpId_Address()[iD];
ServerOperations serveroperaation = new ServerOperations();
LamportClock clock = new LamportClock();
try
{
rcvOkFromRA proxy = XmlRpcProxyGen.Create <rcvOkFromRA>();
proxy.Url = address;
proxy.recieveOkFromRicartAgarwala(data.getpId(), clock.sendAction().ToString());
Console.WriteLine("Releasing the deferred request from " + iD + " from queue ");
Console.WriteLine("OK message sent at " + DateTime.Now.ToString("HH:mm:ss:fff"));
}
catch (Exception e)
{
// TODO Auto-generated catch block
Console.WriteLine("Could not send the message succesfully.. node denied connection");
Console.WriteLine(e.StackTrace);
}
}
numberOfNodesResponded = 0;
usingCR = false;
}
public void join(String sendAddress)
{
//
NetworkBean data = new NetworkBean();
joinNetw proxy = XmlRpcProxyGen.Create <joinNetw>();
proxy.Url = sendAddress;
try
{
String recievedId = proxy.joinNetwork(data.getpId(), data.getAddress());
data.addValuesToDictionary(recievedId, sendAddress);
}
catch (Exception e)
{
// TODO Auto-generated catch block
Console.WriteLine(e.StackTrace);
}
}
public void resetDistributedStringVariable()
{
NetworkBean data = new NetworkBean();
ServerOperations serveroperation = new ServerOperations();
try
{
resetDistributedMasterStr proxy = XmlRpcProxyGen.Create <resetDistributedMasterStr>();
proxy.Url = data.getMasterAddress();
proxy.resetDistributedMasterString(data.getpId());
}
catch (Exception e)
{
// TODO Auto-generated catch block
Console.WriteLine("No response from the master node");
Console.WriteLine("Starting election to elect new master node ( Bully algorith)");
//remove node from network
removeNode(data.getMasterPid());
data.getpId_Address().Remove(data.getMasterPid());
bullyAlgorithm();
// Console.WriteLine(e.StackTrace);
}
}
public void startDistributedCME()
{
try
{
Thread.Sleep(100);
}
catch (Exception e1)
{
// TODO Auto-generated catch block
Console.WriteLine(e1.StackTrace);
}
CsClient client = new CsClient();
NetworkBean data = new NetworkBean();
//run the loop for 20 seconds
Console.WriteLine("Distributed operation has started with Centralized Mutual Exclusion");
Console.WriteLine("*********************ID = " + data.getpId() + "*********************");
if (data.getpId().Equals(data.getMasterPid()))
{
Console.WriteLine("************************I am the Master Node********************");
}
String response;
String message = "";
ServerOperations serveroperaation = new ServerOperations();
var stopwatch = new Stopwatch();
stopwatch.Start();
while (stopwatch.Elapsed < TimeSpan.FromSeconds(20))
{
//a) Wait a random amount of time (1-4 seconds)
Random rnd = new Random();
int waitTime = data.getRnd();
Thread.Sleep(waitTime);
//b) Read the string variable from the master node
//c) Append some random english word to this string
//d) Write the updated string to the master node
// request for critical section to perform these steps
try
{//request
//get response
// if OK do operation
//release message
reqCMEDistributiveOperation proxy = XmlRpcProxyGen.Create <reqCMEDistributiveOperation>();
proxy.Url = data.getMasterAddress();
Console.WriteLine("Request Sent to Master for Distributed Operation at " + DateTime.Now.ToString("HH:mm:ss:fff"));
Console.WriteLine("waiting for the response from Master");
response = proxy.requestCMEDistributiveOperation(data.getpId());
if (response.Equals("OK"))
{
Console.WriteLine("Recived OK message from Master at " + DateTime.Now.ToString("HH:mm:ss:fff"));
distribRead proxyread = XmlRpcProxyGen.Create <distribRead>();
proxyread.Url = data.getMasterAddress();
Console.WriteLine("Reading the variable String from master node");
message = proxyread.distributedRead(data.getpId());
Console.WriteLine("The string is " + message);
/* try
* {
*
* Thread.Sleep(rnd.Next(1000, 3000));
* //System.out.println((long)(Math.random() * 4000+1000));
* }
* catch (Exception e)
* {
* // TODO Auto-generated catch block
* Console.WriteLine(e.StackTrace);
* }*/
String randomWord = WordList.words[rnd.Next(0, 12)];
Console.WriteLine("Appending '" + randomWord + "' to the string " + message);
distribWrite proxyWrite = XmlRpcProxyGen.Create <distribWrite>();
proxyWrite.Url = data.getMasterAddress();
proxyWrite.distributedWrite(data.getpId(), randomWord);
data.getAddedWords().Add(randomWord);
Console.WriteLine(randomWord + " appended to string");
Console.WriteLine("distributed Operatiion completed at " + DateTime.Now.ToString("HH:mm:ss:fff"));
Console.WriteLine("Releasing the CR");
CMErelResource proxyRelease = XmlRpcProxyGen.Create <CMErelResource>();
proxyRelease.Url = data.getMasterAddress();
proxyRelease.CMEreleaseResource(data.getpId());
}
}
catch (Exception e)
{
// TODO Auto-generated catch block
// Console.WriteLine(e.StackTrace);
Console.WriteLine(e.Message);
Console.WriteLine("Could not send the message succesfully.. node denied connection");
Console.WriteLine("No response from the master node");
Console.WriteLine("Starting election to elect new master node ( Bully algorith)");
client.removeNode(data.getMasterPid());
data.getpId_Address().Remove(data.getMasterPid());
client.bullyAlgorithm();
// Console.WriteLine(e.StackTrace);
}
}
//c) After the process has ended all the nodes read the final string from the master node and
//write it to the screen. Moreover they check if all the words they added to the string are
//present in the final string. The result of this check is also written to the screen.
// propagate that it is done with the process.
Console.WriteLine("done with distributed process");
//loop
foreach (KeyValuePair <string, string> entry in data.getpId_Address())
{
String sendAddress = entry.Value;
String iD = entry.Key;
try
{
distdProcessDone proxy = XmlRpcProxyGen.Create <distdProcessDone>();
proxy.Url = sendAddress;
proxy.distributedProcessDone(iD);
// Console.WriteLine("sending message I am New Master to :" + sendAddress);
}
catch (Exception e)
{
// TODO Auto-generated catch block
Console.WriteLine("Could not send the message succesfully.. node denied connection");
// Console.WriteLine(e.StackTrace);
Console.WriteLine("remove node from network");
client.removeNode(iD);
data.getpId_Address().Remove(sendAddress);
if (data.getMasterPid().Equals(iD))
{
client.bullyAlgorithm();
}
}
}
// int number = data.getNoOfNodesFinishedOperation();
while (data.getpId_Address().Count() > data.getNoOfNodesFinishedOperation())
{
// number = data.getNoOfNodesFinishedOperation();
try
{
Thread.Sleep(100);
}
catch (Exception e)
{
// TODO Auto-generated catch block
Console.WriteLine(e.StackTrace);
}
}
Console.WriteLine("out loop");
checkFinalString();
}
public void startDistributedRicartAndAgarwala()
{
try
{
Thread.Sleep(1);
}
catch (Exception e1)
{
// TODO Auto-generated catch block
Console.WriteLine(e1.StackTrace);
}
CsClient client = new CsClient();
NetworkBean data = new NetworkBean();
Console.WriteLine("Distributed operation has started with Ricart and Agarwala algorithm");
Console.WriteLine("*********************ID = " + data.getpId() + "*********************");
if (data.getpId().Equals(data.getMasterPid()))
{
Console.WriteLine("****************************I am the Master Node*****************");
}
Ricart_Agarwala RA = new Ricart_Agarwala();
String response;
String message = "";
ServerOperations serveroperaation = new ServerOperations();
LamportClock clock = new LamportClock();
var stopwatch = new Stopwatch();
stopwatch.Start();
while (stopwatch.Elapsed < TimeSpan.FromSeconds(20))
{
//a) Wait a random amount of time (1-4 seconds)
Random rnd = new Random();
int waitTime = data.getRnd();
Thread.Sleep(waitTime);
Console.WriteLine(waitTime);
//b) Read the string variable from the master node
//c) Append some random english word to this string
//d) Write the updated string to the master node
// request for critical section to perform these steps
// RA.setMyTimeStamp((clock.getValue() + 1).ToString());
clock.tick();
clock.setRequestTimeStamp(clock.getValue() + 1);
foreach (KeyValuePair <string, string> entry in data.getpId_Address())
{
String sendAddress = entry.Value;
String iD = entry.Key;
try
{
RA_sendReq proxy = XmlRpcProxyGen.Create <RA_sendReq>();
proxy.Url = sendAddress;
RA.setRequestCR(true);
clock.sendAction();
//("sending request message to "+entry.getKey()+"at local time :"+dateFormat.format(new Date()));
Console.WriteLine("sending request message to " + iD + "at local time :" + DateTime.Now.ToString("HH:mm:ss:fff"));
response = proxy.RA_sendRequest(data.getpId(), (clock.getValue()).ToString());
//Console.WriteLine("sending message I am New Master to :" + sendAddress);
if (response.Contains("OK"))
{
String[] parts = response.Split('_');
clock.receiveAction(parts[1]);
Console.WriteLine("Recieved OK message from " + iD + "at local time :" + DateTime.Now.ToString("HH:mm:ss:fff"));
RA.setNumberOfNodesResponded(RA.getNumberOfNodesResponded() + 1);
}
else
{
String[] parts = response.Split('_');
clock.receiveAction(parts[1]);
}
}
catch (Exception e)
{
// TODO Auto-generated catch block
Console.WriteLine("Exception from the node/nremove node from network");
client.removeNode(iD);
data.getpId_Address().Remove(sendAddress);
if (iD.Equals(data.getMasterPid()))
{
client.bullyAlgorithm();
}
RA.setNumberOfNodesResponded(RA.getNumberOfNodesResponded() + 1);
// Console.WriteLine(e.StackTrace);
}
}//for each
Console.WriteLine("Number of OK messages recieved =" + RA.getNumberOfNodesResponded());
Console.WriteLine("Number of nodes in network =" + data.getpId_Address().Count());
if (RA.getNumberOfNodesResponded() != data.getpId_Address().Count())
{
Console.WriteLine("Waiting for other nodes to send OK message...");
}
// System.out.println(data.getpId_Address().size()+""+RA.getNumberOfNodesResponded());
int numberOfOkMsgs = RA.getNumberOfNodesResponded();
while (data.getpId_Address().Count() != RA.getNumberOfNodesResponded())
{
numberOfOkMsgs = RA.getNumberOfNodesResponded();
//System.out.println(numberOfOkMsgs);
try
{
Thread.Sleep(100);
}
catch (Exception e)
{
// TODO Auto-generated catch block
Console.WriteLine(e.StackTrace);
}
//keep waiting
//break from the loop only when all the nodes have sent OK message
}
Console.WriteLine("Recieved OK message from all the nodes");
Console.WriteLine("Critical region in my control");
Console.WriteLine("Distributed process started at " + DateTime.Now.ToString("HH:mm:ss:fff"));
RA.setRequestCR(false);
RA.setUsingCR(true);
try
{
distribRead proxy = XmlRpcProxyGen.Create <distribRead>();
proxy.Url = data.getMasterAddress();
Console.WriteLine("Reading the variable String from master node");
message = proxy.distributedRead(data.getpId());
Console.WriteLine("The string is " + message);
String randomWord = WordList.words[rnd.Next(0, WordList.words.Length)];
Console.WriteLine("Appending '" + randomWord + "' to the string " + message);
distribWrite proxyWrite = XmlRpcProxyGen.Create <distribWrite>();
proxyWrite.Url = data.getMasterAddress();
proxyWrite.distributedWrite(data.getpId(), randomWord);
data.getAddedWords().Add(randomWord);
/* try
* {
*
* Thread.Sleep(rnd.Next(1000, 3000));
* //System.out.println((long)(Math.random() * 4000+1000));
* }
* catch (Exception e)
* {
* // TODO Auto-generated catch block
* Console.WriteLine(e.StackTrace);
* }*/
}
catch (Exception e)
{
// Console.WriteLine(e.StackTrace);
Console.WriteLine("No response from the master node");
Console.WriteLine("Starting election to elect new master node ( Bully algorith)");
client.removeNode(data.getMasterAddress());
data.getpId_Address().Remove(data.getMasterPid());
client.bullyAlgorithm();
}
Console.WriteLine("Distributed operation done at time " + DateTime.Now.ToString("HH:mm:ss:fff"));
//release all the requests from queue
Console.WriteLine("Exiting critical Section");
Console.WriteLine("Releasing all deffered requests");
RA.releaseDeferedRequests();
}
//c) After the process has ended all the nodes read the final string from the master node and
//write it to the screen. Moreover they check if all the words they added to the string are
//present in the final string. The result of this check is also written to the screen.
// propagate that it is done with the process.
Console.WriteLine("done with distributed process");
clock.tick();
//loop
foreach (KeyValuePair <string, string> entry in data.getpId_Address())
{
String sendAddress = entry.Value;
String iD = entry.Key;
try
{
distdProcessDone proxy = XmlRpcProxyGen.Create <distdProcessDone>();
proxy.Url = sendAddress;
proxy.distributedProcessDone(iD);
// Console.WriteLine("sending message I am New Master to :" + sendAddress);
}
catch (Exception e)
{
// TODO Auto-generated catch block
Console.WriteLine("Could not send the message succesfully.. node denied connection");
// Console.WriteLine(e.StackTrace);
}
RA.setMyTimeStamp("0");
}
//int number = data.getNoOfNodesFinishedOperation();
while (data.getpId_Address().Count() > data.getNoOfNodesFinishedOperation())
{
// number = data.getNoOfNodesFinishedOperation();
try
{
Thread.Sleep(100);
}
catch (Exception e)
{
// TODO Auto-generated catch block
Console.WriteLine(e.StackTrace);
}
}
Console.WriteLine("out loop");
checkFinalString();
}
static void Main(string[] args)
{
int choice = 1;
Console.WriteLine("Please enter the port number to start listening----");
int port = Int32.Parse(Console.ReadLine());
ServerOperations serveroperation = new ServerOperations();
Thread thread = new Thread(() => serveroperation.start(port));
thread.Start();
CsClient csclient = new CsClient();
// csclient.testing1();
while (choice == 1)
{
Console.WriteLine("1.join \n2.view address list\n3.Trigger Bully election \n4.Reset central distributed variable");
Console.WriteLine("5.view master node\n6.Start Distributive Operation with Centralised mutual exclusion\n7.Start Distributive Operation with Ricart and Agarwala Algorithm\n8.signoff \n9.exit");
int read = Int32.Parse(Console.ReadLine());
switch (read)
{
case 1:
{
Console.WriteLine("Please enter the Address to join ");
String sendAddress = Console.ReadLine();
try
{
csclient.join(sendAddress);
}
catch (Exception e)
{
// TODO Auto-generated catch block
Console.WriteLine(e.StackTrace);
}
break;
}
case 2:
{
NetworkBean data = new NetworkBean();
data.diaplayIdAddress();
Console.WriteLine("own address");
Console.WriteLine(data.getpId() + ":" + data.getAddress());
break;
}
case 3:
{
csclient.bullyAlgorithm();
break;
}
case 4:
{
csclient.resetDistributedStringVariable();
break;
}
case 5:
{
NetworkBean data = new NetworkBean();
data.diaplayIdAddress();
Console.WriteLine("master");
Console.WriteLine(data.getMasterPid() + ":" + data.getMasterAddress());
break;
}
case 6:
{
csclient.startDistributedOpeartion("CME");
break;
}
case 7:
{
csclient.startDistributedOpeartion("RA");
break;
}
case 8:
{
csclient.signOff();
break;
}
case 9:
{
csclient.signOff();
System.Environment.Exit(1);
//choice = 0;
break;
}
default:
Console.WriteLine("Invalid input");
break;
}
}
//csclient.testing();
Console.Read();
}
public void signOff()
{
NetworkBean data = new NetworkBean();
foreach (KeyValuePair <string, string> entry in data.getpId_Address())
{
String sendAddress = entry.Value;
String iD = entry.Key;
try
{
nodeSignoff proxy = XmlRpcProxyGen.Create <nodeSignoff>();
proxy.Url = sendAddress;
proxy.nodeSignOff(data.getpId());
Console.WriteLine("sending message Signing off to :" + sendAddress);
}
catch (Exception e)
{
// TODO Auto-generated catch block
Console.WriteLine("Could not send the message succesfully.. node denied connection");
removeNode(iD);
// Console.WriteLine(e.StackTrace);
}
}
if (data.getMasterPid().Equals(data.getpId()))
{
foreach (KeyValuePair <string, string> entry in data.getpId_Address())
{
addr = entry.Value;
ide = entry.Key;
}
foreach (KeyValuePair <string, string> entry in data.getpId_Address())
{
try
{
// NetworkBean data = new NetworkBean();
ServerOperations serveroperaation = new ServerOperations();
setMasterAddrId proxy = XmlRpcProxyGen.Create <setMasterAddrId>();
proxy.Url = entry.Value;
proxy.setMasterAddressId(ide, addr);
}
catch (Exception e)
{
// Console.WriteLine(e.StackTrace);
}
}
String response = "";
foreach (KeyValuePair <string, string> entry in data.getpId_Address())
{
String sendAddress = entry.Value;
try
{
callBullyAfterSignoff proxy = XmlRpcProxyGen.Create <callBullyAfterSignoff>();
proxy.Url = sendAddress;
response = proxy.callBullyAfterSignOff(data.getpId());
Console.WriteLine(data.getpId() + " Sends the bully election message to :" + sendAddress);
Console.WriteLine("response is :" + response);
}
catch (Exception e)
{
// TODO Auto-generated catch block
Console.WriteLine("no response");
// Console.WriteLine(e.StackTrace);
}
if (response.Length > 0)
{
break;
}
}
}
data.getpId_Address().Clear();
data.setMasterAddress(data.getAddress());
data.setMasterPid(data.getpId());
}