NGen - Srikant's Tech Blog: April 2018

1. Creating WAR file to track DB session and WEB session

Follow the below steps to create WAR file for Jboss JVM

[jbadm@jb02 ~]$ mkdir /tmp/SRIEARV3.0 ; cd /tmp/SRIEARV3.0

[jbadm@jb02 SRIEARV3.0]$ mkdir -p META-INF WEB-INF/classes WEB-INF/lib

Create /tmp/SRIEARV3.0/index.html with following content

<!DOCTYPE html>

<html>

<head>

<title>INDEX.html</title>

</head>

<body>

</body>

</html>

Create /tmp/SRIEARV3.0/META-INF/MANIFEST.MF with following content

Manifest-Version: 1.0

Created-By: 1.7.0_79 (Oracle Corporation)

Create /tmp/SRIEARV3.0/WEB-INF/jboss-web.xml with following content

<jboss-web>

<replication-config>

<!--

Possible Values:

ACCESS

SET_AND_GET

SET_AND_NON_PRIMITIVE_GET

SET

-->

<replication-trigger>SET_AND_NON_PRIMITIVE_GET</replication-trigger>

<!--

Possible Values:

SESSION

ATTRIBUTE

FIELD

-->

<replication-granularity>SESSION</replication-granularity>

</replication-config>

</jboss-web>

Create /tmp/SRIEARV3.0/WEB-INF/web.xml with following content

<?xml version="1.0" encoding="UTF-8"?>

<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">

<display-name>cluster-test</display-name>

<welcome-file-list>

<welcome-file>index.html</welcome-file>

<welcome-file>index.htm</welcome-file>

<welcome-file>index.jsp</welcome-file>

<welcome-file>default.html</welcome-file>

<welcome-file>default.htm</welcome-file>

<welcome-file>default.jsp</welcome-file>

</welcome-file-list>

</web-app>

Create /tmp/SRIEARV3.0/sayhi2sri.jsp with the following content

<%@ page language="java" contentType="text/html; charset=UTF-8"

pageEncoding="UTF-8"%>

<%!

String message = "Hello and Welcome to Sri NGEN LABs JBoss world";

<body>

<%= new java.util.Date() %>

</body>

Sri NGEN Jboss World's - contact me on email at S R I K A N T . A N D E @ G M A I L . C O M or WhatsApp/call + 9 1 - 9 7 6 6 5 2 5 3 1 3 !!!!!

Sri NGEN Jboss World's - Follow me on blog at <a href="https://ngen-sri.blogspot.in"> ngen-sri.blogspot.in</a> or Linkedin <a href="https://www.linkedin.com/in/srikant-swamy-ande-080383"> www.linkedin.com/in/srikant-swamy-ande-080383</a> !!!!!

Sri NGEN Jboss World's - Following are DB Session info !!!!!

<%@page import="java.util.*, java.lang.reflect.*, javax.servlet.http.HttpSession, javax.naming.*, javax.sql.DataSource, java.sql.*"%>

DataSource ds = null;

Connection con = null;

DatabaseMetaData dmd = null;

PreparedStatement pr = null;

InitialContext ic;

try {

ic = new InitialContext();

ds = (DataSource)ic.lookup( "java:jboss/datasources/SrioraclexeDS" );

out.println("***** The DefaultDS DataSource is *****"+ds.toString());

con = ds.getConnection();

out.println("***** The Connection is *****"+con.toString());

dmd=con.getMetaData();

String databaseName=dmd.getDatabaseProductName();

out.println("You have connected to=="+databaseName);

}catch(Exception e){

out.println("Exception thrown " +e);

}finally{

if(con != null){

con.close();

}

} %>

String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort();

String cPath = request.getContextPath();

String sPath = request.getServletPath();

String nodeId = System.getProperty("jboss.node.name");

String hostName = System.getProperty("jboss.server.name");

String hostOSname = System.getProperty("os.name");

String hostOSarch = System.getProperty("os.arch");

String hostOSversion = System.getProperty("os.version");

String hostJAVAversion = System.getProperty("java.version");

String hostJAVAvendor = System.getProperty("java.vendor");

String hostJAVAvmName = System.getProperty("java.vm.name");

String hostJAVAvmVersion = System.getProperty("java.vm.version");

String hostJAVAvmVendor = System.getProperty("java.vm.vendor");

String variableString = (String)session.getAttribute("SESSION_TEST_VARIABLE");

int count = 0;

if(variableString != null)

{

count = Integer.parseInt(variableString);

count++;

}

session.setAttribute("SESSION_TEST_VARIABLE", String.valueOf(count));

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<html>

<head>

<title>Sri - NGEN LAB - Session Test</title>

</head>

Sri NGEN Jboss World's - Following are WEB Session info !!!!!

</table>

<tr><td>The sessionId is: </td><td><%=session.getId() %></td>

<tr><td>The sessionObj is: </td><td><%=session %></td>

<tr><td>The nodeId is: </td><td><%=nodeId %></td>

<tr><td>The server hostName is: </td><td><%=hostName %></td>

<tr><td>The server hostOSname is: </td><td><%=hostOSname %></td>

<tr><td>The server hostOSarch is: </td><td><%=hostOSarch %></td>

<tr><td>The server hostOSversion is: </td><td><%=hostOSversion %></td>

<tr><td>The server hostJAVAversion is: </td><td><%=hostJAVAversion %></td>

<tr><td>The server hostJAVAvendor is: </td><td><%=hostJAVAvendor %></td>

<tr><td>The server hostJAVAvmName is: </td><td><%=hostJAVAvmName %></td>

<tr><td>The server hostJAVAvmVersion is: </td><td><%=hostJAVAvmVersion %></td>

<tr><td>The server hostJAVAvmVendor is: </td><td><%=hostJAVAvmVendor %></td>

<tr><td># of requests placed on session: </td><td><%=count %></td>

</table>

</body>

</html>

In above content at phrase “ds = (DataSource)ic.lookup( "java:jboss/datasources/SrioraclexeDS" );”, “java:jboss/datasources/SrioraclexeDS” is DB DataSource Name.

Compile all content as WAR file which we can use in Jboss LABS.

[jbadm@jb02 SRIEARV3.0]$ /usr/java/jdk1.7.0_79/bin/jar -cvf SRIEARV3.0.war index.html META-INF sayhi2sri.jsp WEB-INF

added manifest

adding: index.html(in = 170) (out= 136)(deflated 20%)

ignoring entry META-INF/

ignoring entry META-INF/MANIFEST.MF

adding: sayhi2sri.jsp(in = 3963) (out= 1304)(deflated 67%)

adding: WEB-INF/(in = 0) (out= 0)(stored 0%)

adding: WEB-INF/lib/(in = 0) (out= 0)(stored 0%)

adding: WEB-INF/web.xml(in = 663) (out= 265)(deflated 60%)

adding: WEB-INF/jboss-web.xml(in = 389) (out= 178)(deflated 54%)

adding: WEB-INF/classes/(in = 0) (out= 0)(stored 0%)

[jbadm@jb02 SRIEARV3.0]$

Deploy WAR file any of Jboss JVM (assumed already DS “java:jboss/datasources/SrioraclexeDS” is configured & working)

[standalone@jb02:10190 /] deploy /tmp/Sources/SRIEARV3.0/SRIEARV3.0.war

[standalone@jb02:10190 /]

You can test web page in browser or using elinks.

[jbadm@jb02 ~]$ elinks --dump http://jb02:8280/SRIEARV3.0/sayhi2sri.jsp

Hello and Welcome to Sri NGEN LABs JBoss world

Sat Apr 07 14:02:17 IST 2018

Sri NGEN Jboss World's - contact me on email at S R I K A N T . A N D E @

G M A I L . C O M or WhatsApp/call + 9 1 - 9 7 6 6 5 2 5 3 1 3 !!!!!

Sri NGEN Jboss World's - Follow me on blog at [1]ngen-sri.blogspot.in or

Linkedin [2]www.linkedin.com/in/srikant-swamy-ande-080383 !!!!!

Sri NGEN Jboss World's - Following are DB Session info !!!!!

***** The DefaultDS DataSource is

*****org.jboss.as.connector.subsystems.datasources.WildFlyDataSource@181d9e

***** The Connection is

*****org.jboss.jca.adapters.jdbc.jdk8.WrappedConnectionJDK8@d67209 You

have connected to==Oracle

Sri NGEN Jboss World's - Following are WEB Session info !!!!!

The sessionId is: p4OpfyDfNW_X-lw_h5z31WsPnBbwUSpVvbvZhL6A

The sessionObj is: io.undertow.servlet.spec.HttpSessionImpl@54d23138

The nodeId is: Sristandalone

The server hostName is: jb02

The server hostOSname Linux

is:

The server hostOSarch i386

is:

The server hostOSversion 2.6.32-431.el6.x86_64

is:

The server 1.8.0_91

hostJAVAversion is:

The server Oracle Corporation

hostJAVAvendor is:

The server Java HotSpot(TM) Server VM

hostJAVAvmName is:

The server 25.91-b14

hostJAVAvmVersion is:

The server Oracle Corporation

hostJAVAvmVendor is:

# of requests placed on 0

session:

References

Visible links

1. https://ngen-sri.blogspot.in/

2. https://www.linkedin.com/in/srikant-swamy-ande-080383

[jbadm@jb02 ~]$

Click to download "SRIEARV3.0.war"

Tuesday, April 10, 2018

08 - How to create WAR file to track DS session and WEB session

Comming Soon Jboss EAP 7.1

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