I want to do clustering with ear project. I found one solution to run standalone in clustering using standalone-ha.xml configuration. I followed below article. It's working fine. Clustering in domain mode with wildfly9 But I want to run ERP project which has ear as well as stateful ejb's. So I run clustering in standalone mode.
I have two machines ip's are different e.g.
1.10.10.10.10 node1
- 20.20.20.20 node2
Both machine have wildfly9 and for testing purpose I have created one sample stateful ejb project with web component.
My command to run server is:
standalone.bat -c standalone-ha.xml -b 10.10.10.10 -u 230.0.0.4 -Djboss.node.name=node1
and
./standalone.sh -c standalone-ha.xml -b 20.20.20.20 -u 230.0.0.4 -Djboss.node.name=node2
My project Test.war has stateful ejb and servlet and jsp . 1)Bank.java is stateful ejb which implements Remote and local interface
@Stateful(passivationCapable=true)
public class Bank implements BankRemote,BankLocal {
private int amount=0;
@Override
public boolean withdraw(int amount) {
if(amount<=this.amount){
this.amount-=amount;
return true;
}else{
return false;
}
}
@Override
public void deposit(int amount) {
this.amount+=amount;
}
@Override
public int getBalance() {
return amount;
}}
2)OpenAccount.java is servlet
@WebServlet("/OpenAccount")
public class OpenAccount extends HttpServlet {
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
try{
HttpSession bankSession = request.getSession();
BankRemote bank = (BankRemote) bankSession.getAttribute("remote");
if(bank == null)
{
System.out.println("Session is Null So initialized with new session");
Properties p = new Properties();
/*p.put("jboss.naming.client.ejb.context", true);*/
p.put(Context.URL_PKG_PREFIXES, "org.jboss.ejb.client.naming");
InitialContext context=new InitialContext();
BankRemote b=(BankRemote)context.lookup("java:global/Test/Bank!com.ejb.BankRemote");
request.getSession().setAttribute("remote",b);
}
else
{
System.out.println("Session is present id is :["+bankSession.getId()+"]");
}
request.getRequestDispatcher("/operation.jsp").forward(request, response);
}
catch(Exception e){System.out.println(e);}
3)index.jsp is Home page contains below single line which redirects to servlet
<a href="OpenAccount">Open Account</a>
4)operation.jsp which forwarded from servlet is:
<body>
<form action="operationprocess.jsp">
Enter Amount:<input type="text" name="amount"/><br>
Choose Operation:
Deposit<input type="radio" name="operation" value="deposit"/>
Withdraw<input type="radio" name="operation" value="withdraw"/>
Check balance<input type="radio" name="operation" value="checkbalance"/>
<br>
<input type="submit" value="submit">
</form>
</body>4)operationprocess.jsp is
<body>
<%
try
{
BankRemote remote=(BankRemote)session.getAttribute("remote");
String operation=request.getParameter("operation");
String amount=request.getParameter("amount");
if(remote != null)
{if(operation!=null){
try{
if(operation.equals("deposit"))
{
remote.deposit(Integer.parseInt(amount));
out.print("Amount successfully deposited!");
}
else
{
if(operation.equals("withdraw")){
boolean status=remote.withdraw(Integer.parseInt(amount));
if(status){
out.print("Amount successfully withdrawn!"); }
else{
out.println("Enter less amount"); }
}else{
out.println("Current Amount: "+remote.getBalance());
}
}
}catch(NumberFormatException numex){
out.println("Number is not valid");}
}
}
else
{out.print("Session is null"); }
}catch(Exception ee){
System.out.println("in jsp exception");
ee.printStackTrace();}
%>
<hr/>
<jsp:include page="operation.jsp"></jsp:include>
</body>5)web.xml contains
<distributable/>
tags for enable clustering.
6) also class path has jboss-ejb-client.properties
remote.clusters=ejb
remote.cluster.ejb.connect.options.org.xnio.Options.SASL_POLICY_NOANONYMOUS=false
remote.cluster.ejb.connect.options.org.xnio.Options.SSL_ENABLED=false
With all these things, I deployed Test.war in both server and try to access with apache_mode_cluster i.e. 10.10.10.10/Test/. It is invoking ejb and give me output but when
1) I shutdown 10.10.10.10 server and refresh browser(Not clear browser history for maintaining session) , that time it gives me error like the distributable container does not apply to identical application.
2) 10.10.10.10 is shut down and I clear history and again access url 10.10.10.10/Test it redirect to 20.20.20.20 server i.e. node2 and run successfully. But session is not replicated.
Please help me. standalone-ha.xml -- subsystem infinispan is:
<cache-container name="server" default-cache="default" module="org.wildfly.clustering.server" aliases="singleton cluster">
<transport lock-timeout="60000"/>
<replicated-cache name="default" mode="SYNC">
<transaction mode="BATCH"/>
</replicated-cache>
</cache-container>
<cache-container name="web" default-cache="dist" module="org.wildfly.clustering.web.infinispan">
<transport lock-timeout="60000"/>
<distributed-cache name="dist" mode="ASYNC" owners="2" l1-lifespan="0">
<locking isolation="REPEATABLE_READ"/>
<transaction mode="BATCH"/>
<file-store/>
</distributed-cache>
</cache-container>
<cache-container name="ejb" default-cache="dist" module="org.wildfly.clustering.ejb.infinispan" aliases="sfsb">
<transport lock-timeout="60000"/>
<distributed-cache name="dist" mode="ASYNC" owners="2" l1-lifespan="0">
<locking isolation="REPEATABLE_READ"/>
<transaction mode="BATCH"/>
<file-store/>
</distributed-cache>
</cache-container>
<subsystem xmlns="urn:jboss:domain:infinispan:3.0">from yourstandalone-ha.xmlfile. – Thi