This post is basically a snippet of code to address the following -
1. Attach jQuery (datepicker) calendar to start date and end date inputs.
2. Create a jQuery datatable
3. On page submit, hide submit button and show a loading image instead.
After you have downloaded jQuery and extracted it to appropriate folders,
create a php file with these contents -
<?php
class InitPage {
public $jscript = "
<script type=\"text/javascript\" src=\"js/jquery-1.4.2.min.js\"></script>
<script type=\"text/javascript\" src=\"ui/jquery.ui.core.js\"></script>
<script type=\"text/javascript\" src=\"ui/jquery.ui.widget.js\"></script>
<script type=\"text/javascript\" src=\"ui/jquery.ui.datepicker.js\"></script>
<script type=\"text/javascript\" src=\"js/jquery.dataTables.js\"></script>
<script type=\"text/javascript\" src=\"js/myjscript.js\"></script>";
public $css =
" <link type=\"text/css\" href=\"themes/redmond/jquery.ui.all.css\" rel=\"stylesheet\" />";
public $header = "<html><head><title>Random Information</title>";
public $body = "</head><body ><h1 >Random Information</h1>";
public $footer =
"<div id=\"footer\"><p><a href=\"http://rowsandcolumns.blogspot.com\">
http://rowsandcolumns.blogspot.com</a></div></body> </html>";
public function print_page($v_header,$v_jscript,$contents,$v_footer="") {
if(!$v_header) {
$v_header = $this->header.$this->jscript.$this->css.$this->body;
}
if(!$v_footer) {
$v_footer = $this->footer;
}
echo $v_header.$contents.$v_footer;
}
function is_date( $str )
{
$stamp = strtotime( $str );
if (!is_numeric($stamp)) {
return FALSE;
}
$month = date( 'm', $stamp );
$day = date( 'd', $stamp );
$year = date( 'Y', $stamp );
if (checkdate($month, $day, $year)) {
return TRUE;
}
return FALSE;
}
}
$table_contents = "";
if(isset($_POST) && !empty($_POST)) { //On submit enter here
$bp = new InitPage();
// Get dates and validate if
//start date and end date are in proper format
if (isset($_POST["start-date"]) &&
$bp->is_date($_POST["start-date"]) &&
isset($_POST["end-date"]) &&
$bp->is_date($_POST["end-date"])
){
list($start_date_m, $start_date_d, $start_date_Y)= explode("/",$_POST["start-date"]);
list($end_date_m, $end_date_d, $end_date_Y)= explode("/",$_POST["end-date"]);
$start_date = date("Y-m-d H:i:s", mktime(8, 0, 0, $start_date_m, $start_date_d, $start_date_Y));
$end_date = date("Y-m-d H:i:s", mktime(8, 0, 0, $end_date_m, $end_date_d, $end_date_Y));
if($end_date <= $start_date) {
$table_contents.= "<font size=\"2\" color=\"red\">Start date should be
less than end date!</font>";
$bp->print_page("","",$table_contents,"");
die;
}
//Time to hide submit button and show loading image
sleep(3);
$table_contents = "<br/><br/><div style=\"width:500;\" >
<table border=\"1\" width=\"500\" id=\"reading\">
<thead>
<tr>
<th>Serial #</th>
<th>Name</th>
<th>Count</th>
</tr>
</thead>
<tbody>
<tr><td> 1 </td> <td> Managers </td> <td> 10 </td></tr>
<tr><td> 2 </td> <td> Engineers </td> <td> 50 </td></tr>
<tr><td> 3 </td> <td> Interns </td> <td> 5 </td></tr>
<tr><td> 4 </td> <td> Executives </td> <td> 3 </td></tr>
<tr><td> 5 </td> <td> Facilities </td> <td> 2 </td></tr>
</tbody>
<tfoot>
<tr>
<th>Serial #</th>
<th>Name</th>
<th>Count</th>
</tr>
</tfoot>
</table></div><br/> ";
}
else {
$table_contents.= "<font size=\"2\" color=\"red\">Start date/End date
is not valid!</font>";
}
$bp->print_page("","",$table_contents,"");
die;
}
else { // On first page load
$bp = new InitPage();
$select_cb = "<form action=\"index.php\" method=\"post\">Please select start and
end date...<br/>
<br/><label for=\"start-date\">Start date:</label>
<input type=\"text\" name=\"start-date\" id=\"start-date\"/><br/><br/>
<label for=\"end-date\">End date: </label>
<input type=\"text\" name=\"end-date\" id=\"end-date\"/>
<p><input type=\"submit\" id=\"submit_button\" name=\"submit_button\"
value=\"Submit\"></p>
<span id=\"spanloader\" style=\"display: none;\"><img src=\"images/loading1.gif\"
alt=\"Please wait...\"> Please wait...</span>
</form> ";
$bp->print_page("","",$select_cb,"");
}
?>
Create javascript file (js/myscript.js) with these contents:
//attach datepicker to start date
$(function() {
$("#start-date").datepicker();
});
//attach datepicker to end date
$(function() {
$("#end-date").datepicker();
});
$().ready(function() {
$('#submit_button').show();
//hide the submit button after click and show loading image
$('[id$=submit_button]').click(function() {
$('#spanloader').show();
$('#submit_button').hide();
});
});
//set datatable
$(document).ready(function() {
$('#reading').dataTable({
"bJQueryUI": true,
"sPaginationType": "full_numbers"});
} );
This should get you started with a data table and start date end date datepicker using jquery.
Friday, July 30, 2010
Tuesday, July 27, 2010
Ganglia - Basic installation and configuration guide
After playing around, with both Zabbix and Ganglia, I decided to go ahead with Ganglia. The installation is tricky but once it is installed, configuring and adding hosts is easy. Here I will discuss, installation and configuration of Ganglia. Both the client and server daemon will be installed on the same machine.
Ganglia is a monitoring system for high-performance computing systems. Ganglia comprises of two daemons. The daemon gmond, acts like a client and sends machine information( as xml fomat), to daemon gmetad which stores these statistics in a round robin database.
A PHP-based web frontend is used to dispay the graphs in near real time.
Before starting Ganglia a few dependencies are required to be installed.
Another dependency required for Ganglia is libconfuse.
Now we download Ganglia source package and begin installation.
Setup config files for gmetad and gmond.conf
# vi gmond.conf
host = masterhostname
port = 8650
ttl = 1
}
# vi gmetad.conf
GMOND=/opt/ganglia/sbin/gmond
Optional (this would enable running the daemons as an automated service) :
Add the following lines if they are not a part of your config file.
Edit conf.php in web folder:
define("RRDTOOL", "/opt/rrdtool-1.4.4/bin/rrdtool");
RRDTOOL should point to rrdtool path
You can point your browser to the web front end location and it should display you the graphs.
Ganglia is a monitoring system for high-performance computing systems. Ganglia comprises of two daemons. The daemon gmond, acts like a client and sends machine information( as xml fomat), to daemon gmetad which stores these statistics in a round robin database.
A PHP-based web frontend is used to dispay the graphs in near real time.
Before starting Ganglia a few dependencies are required to be installed.
# tcsh
# setenv INSTALL_DIR /opt/rrdtool-1.4.4
# setenv BUILD_DIR /opt/build/rrdbuild
# cd $BUILD_DIR
# wget http://oss.oetiker.ch/rrdtool/pub/rrdtool-1.4.4.tar.gz
# gunzip -c rrdtool-1.4.4.tar.gz | tar xf – # cd rrdtool-1.4.4
# ./configure --prefix=$INSTALL_DIR && make && make install
This would have installed round robin database. It is required only on the head node. The head node (server) would be the one where you want to install gmetad daemon.Another dependency required for Ganglia is libconfuse.
# cd /opt/build
# wget http://bzero.se/confuse/confuse-2.6.tar.gz
# /bin/tar -xzf confuse-2.6.tar.gz
# cd confuse-2.6
# ./configure --prefix=/opt/ganglia
# env CFLAGS="-O3 -fPIC" ./configure --prefix=/opt/ganglia
# make
# make install
# wget http://bzero.se/confuse/confuse-2.6.tar.gz
# /bin/tar -xzf confuse-2.6.tar.gz
# cd confuse-2.6
# ./configure --prefix=/opt/ganglia
# env CFLAGS="-O3 -fPIC" ./configure --prefix=/opt/ganglia
# make
# make install
Now we download Ganglia source package and begin installation.
# cd /opt/build/
# wget http://sourceforge.net/projects/ganglia/files/ganglia%20monitoring%20core/3.1.7/ganglia-3.1.7.tar.gz/download
# tar -xzf ganglia-3.1.7.tar.gz
# cd ganglia-3.1.7
# setenv CFLAGS "-I/opt/ganglia/include/ -I/opt/rrdtool-1.4.4/include"
# setenv LDFLAGS "-L/opt/ganglia/lib/ -L/opt/rrdtool-1.4.4/lib"
# ./configure --prefix=/opt/ganglia --with-gmetad --sysconfdir=/etc/ganglia
# make
# make install
Make sure the permissions are appropriate on path /opt/ganglia/rrds. This is the path where I have my round robin database.# cd /opt/ganglia/sbin/
# ./gmond --default-config > gmond.conf
# ./gmetad --default-config > gmetad.conf
Setup config files for gmetad and gmond.conf
# vi gmond.conf
Set up your udp_send_channel to look like this:
udp_send_channel {host = masterhostname
port = 8650
ttl = 1
}
# vi gmetad.conf
Modify directives as:
data_source "MyCluster" localhost rrd_rootdir "/opt/ganglia/rrds"
# cp gmond.conf /etc/ganglia/.
# cp gmetad.conf /etc/ganglia/.
# cd $BUILD_DIR
# cp gmond/gmond.init /etc/rc.d/init.d/gmond
# cp gmond/gmond.init /etc/rc.d/init.d/gmond
# vi /etc/rc.d/init.d/gmond
Set this variable asGMOND=/opt/ganglia/sbin/gmond
Optional (this would enable running the daemons as an automated service) :
# chkconfig --add gmond
# chkconfig --list gmond
gmond 0:off 1:off 2:on 3:on 4:on 5:on 6:off
gmond 0:off 1:off 2:on 3:on 4:on 5:on 6:off
# /etc/rc.d/init.d/gmond start
Starting GANGLIA gmond: [ OK ]
# cd /opt/build/ganglia-3.1.7/gmetad
# cp gmetad.init /etc/rc.d/init.d/gmetad
# vi /etc/rc.d/init.d/gmetad
GMETAD=/opt/ganglia/sbin/gmetad
# chkconfig --add gmetad
Starting GANGLIA gmond: [ OK ]
# cd /opt/build/ganglia-3.1.7/gmetad
# cp gmetad.init /etc/rc.d/init.d/gmetad
# vi /etc/rc.d/init.d/gmetad
GMETAD=/opt/ganglia/sbin/gmetad
# chkconfig --add gmetad
# chkconfig --list gmetad
gmetad 0:off 1:off 2:on 3:on 4:on 5:on 6:off
# /etc/rc.d/init.d/gmetad start
Starting GANGLIA gmetad: [ OK ]
Edit httpd.confgmetad 0:off 1:off 2:on 3:on 4:on 5:on 6:off
# /etc/rc.d/init.d/gmetad start
Starting GANGLIA gmetad: [ OK ]
Add the following lines if they are not a part of your config file.
LoadModule php5_module modules/libphp5.so
Edit DirectoryIndex like
DirectoryIndex index.html index.html.var index.php
Addtype application/x-httpd-php .php
Addtype application/x-httpd-php .php
AddType application/x-httpd-php-source .phps
Copy “web” folder to httpd document root locationEdit conf.php in web folder:
define("RRDTOOL", "/opt/rrdtool-1.4.4/bin/rrdtool");
RRDTOOL should point to rrdtool path
# /sbin/service httpd restart
You can point your browser to the web front end location and it should display you the graphs.
Sunday, July 25, 2010
Extjs + PHP - How to embed Treepanel, Gridpanel and Formpanel in a page?
1. Download ExtJS and unzip it to your web path.
2. Create an html file (say test_page.html) with these contents. This will be used to render the page.
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title> Main Page </title>
<link rel="stylesheet" type="text/css" href="ext/resources/css/ext-all.css" />
<script type="text/javascript" src="ext/adapter/ext/ext-base.js"></script>
<script type="text/javascript" src="ext/ext-all.js"> </script>
<script type="text/javascript" src="javascripts/test_ext_widget.js"> </script>
</head>
<body>
<div id="header">
</div>
</body>
</html>
3. Create php file (extjs.php) with the following contents. This file return a JSON object which will be rendered by extjs.
<?php
$start = @$_REQUEST["start"];
$limit = @$_REQUEST["limit"];
$start = $start ? $start : 0;
$limit = $limit ? $limit : 5;
$data = array(
array("first"=>'Jack', "last"=>'Shephard',"bpay"=>7.75,"cpay"=>8.75,"email"=>'jackx@clemsonx.edu',"uid"=>'jackx', "hiredate"=>'8/1 12:00am'),
array("first"=>'James', "last"=>'Ford',"bpay"=>7.75,"cpay"=>8.75, "email"=>'jamesx@clemson.edu',"uid"=>'jamesx', "hiredate"=>'9/1 12:00am'),
array("first"=>'Kate',"last"=>'Austen', "bpay"=>7.75,"cpay"=>8.75, "email"=>'katex@clemson.edu',"uid"=>'katex', "hiredate"=>'10/1 12:00am'),
array("first"=>'Juliet',"last"=>'Burke',"bpay"=>7.75,"cpay"=>8.75, "email"=>'julietx@clemson.edu',"uid"=>'julietx', "hiredate"=>'9/1 10:00am'),
array("first"=>'Sayid',"last"=>'Jarrah',"bpay"=>7.75,"cpay"=>8.75, "email"=>'sayidx@clemson.edu',"uid"=>'sayidx', "hiredate"=>'9/1 11:00am'),
);
$a = array();
for($i = $start; $i < 5; $i++) {
$a[] = $data[$i];
}
$o = array(
"success"=>true
,"totalCount"=>sizeof($data)
,"rows"=>$a
);
echo json_encode($o);
?>
4. Finally a js file (say test_ext_widget.js) which will contain the javascript to render the page. This would render a page with three panel objects (gridpanel, formpanel, treepanel).
Ext.ns('app_harpreet');
Ext.BLANK_IMAGE_URL = 'ext/resources/images/default/s.gif';
var item_list = [ {xtype : 'textfield', fieldLabel : 'First name'},
{xtype : 'textfield', fieldLabel : 'Last name'},
{xtype : 'textfield', fieldLabel : 'Email'},
{xtype : 'textfield', fieldLabel : 'Student ID'},
{xtype : 'textfield', fieldLabel : 'Current Pay'},
{xtype : 'textfield', fieldLabel : 'Base Pay'},
{xtype : 'datefield', fieldLabel : 'Hire Date'}
];
var final_cbox = new Ext.form.Checkbox( {
name : 'final_question',
id : 'final_question',
inputValue : 1,
fieldLabel : 'Suspended',
checked : true
});
item_list.push(final_cbox);
var btns = [];
btns.push( {text : 'Save', scope : this});
btns.push( {text : 'Cancel', scope : this});
// now the actual form
var uForm = new Ext.form.FormPanel( {
id:'u_form', region:'center', bodyStyle:'padding:30px', items:item_list, buttons:btns});
var window1 = new Ext.Window( {
id : 'user_edit_win',
title : 'Edit',
width : 900,
height : 650,
minWidth : 500,
minHeight : 600,
layout : 'border',
plain : true,
modal : true,
bodyStyle : 'padding:55px;',
items : [ uForm ]
});
// Custom grid pre-configured class
app_harpreet.Grid = Ext.extend(Ext.grid.GridPanel, {
//double click on user row opens a pop up window which can be used for updating record
_user_row_click : function() {window1.show();},
initComponent : function() {
var config = {
store : new Ext.data.JsonStore( {
id : 'members',
totalProperty : 'totalCount',
root : 'rows',
url : 'extjs.php',
fields : [ {name : 'first'},
{name : 'last'},
{name : 'email'},
{name : 'uid'},
{name : 'cpay', type : 'float'},
{name : 'bpay', type : 'float'},
{name : 'hiredate', type : 'date', dateFormat : 'n/j h:ia'}
]
}),
listeners : {
rowdblclick : this._user_row_click,
scope : this
},
columns : [ {
id : 'uid',
header : "UID",
width : 40,
sortable : true,
dataIndex : 'uid'
},{
id : 'first',
header : "First",
width : 40,
sortable : true,
dataIndex : 'first'
},{
id : 'last',
header : "Last",
width : 40,
sortable : true,
dataIndex : 'last'
}, {
id : 'base',
header : "Base Pay",
width : 40,
sortable : true,
renderer: Ext.util.Format.usMoney,
dataIndex : 'bpay'
}, {
id : 'pay',
header : "Current Pay",
width : 40,
sortable : true,
renderer: Ext.util.Format.usMoney,
dataIndex : 'cpay'
},{
id : 'email',
header : "Email",
width : 40,
sortable : true,
dataIndex : 'email'
}, {
header : "Hire Date",
width : 20,
sortable : true,
renderer : Ext.util.Format.dateRenderer('m/d/Y'),
dataIndex : 'hiredate'
},{
id : 'suspend',
header : "Suspend Until",
width : 40,
sortable : true,
dataIndex : 'suspend'
}],
viewConfig : {forceFit : true}
};
// apply config
Ext.apply(this, Ext.apply(this.initialConfig, config));
this.bbar = new Ext.PagingToolbar( {
store : this.store,
displayInfo : true,
pageSize : 10,
items : [ { xtype : 'textfield' } ]
});
// call parent
app_harpreet.Grid.superclass.initComponent.apply(this, arguments);
}
,
onRender : function() {
// call parent
app_harpreet.Grid.superclass.onRender.apply(this, arguments);
// load the store
this.store.load( {params : {start : 0,limit : 10}});
}});
Ext.reg('membergrid', app_harpreet.Grid);
var item_list1 = [ {xtype : 'textfield',fieldLabel : 'First name'},
{xtype : 'textfield',fieldLabel : 'Last name'},
{xtype : 'textfield', fieldLabel : 'Email'},
{xtype : 'textfield', fieldLabel : 'Student ID'} ];
var btns1 = [];
btns1.push( { text : 'Edit' });
Ext.onReady(function() {
var viewport = new Ext.Viewport( {
layout : 'border',
items : [ { //left tree panel
xtype : 'treepanel',
region : 'west',
collapsible : true,
title : 'Navigation',
id : 'tpNavigation',
root : new Ext.tree.AsyncTreeNode( {
expanded : true,
text : 'Home',
children : [ {text : 'User',leaf : true},
{text : 'Manage users',leaf : true},
{text : 'Clients',leaf : true}]
}),
rootVisible : false,
width : 200
// the west region uses a TreePanel with Accordion layout
}, { //bottom panel
region : 'south',
title : 'Search',
collapsible : true,
height : 200,
minHeight : 200,
items : [ {
xtype : 'form',
items : item_list1,
buttons : btns1
} ]
}, { // main panel to dispay records
region : 'center',
layout : 'fit',
title : 'Center',
xtype : 'membergrid'
} ]
});
});
Now you can point your browser to your html page to render the treepanel, formpanel and gridpanel. The page would make a call to extjs.php, to retrieve the data, as a Json object.
You can double click on the rows to open a pop up window, which can be used to update the data in the row.(row update is not accomplished in the above code)
Please let me know of any improvements/corrections.
Perl - How to create a tcp socket?
The following program can be used to create a tcp connection to a host on a specified port.
The program attempts connection at a periodic interval, which is passed as 'execution_interval'.
#!/usr/bin/perl
use IO::Socket;
use POSIX qw/strftime/;
if (@ARGV != 4)
{
usage();
exit;
}
my $hostname = $ARGV[0];
my $port = $ARGV[1];
my $timeout = $ARGV[2];
my $interval = $ARGV[3];
my $logdir = "/tmp/";
my $datestamp = strftime('%m-%d-%y_%H:%M:%S',localtime);
$mday = (localtime(time))[3];
my $logfile = $logdir."$hostname\_$port\_tcp_socket\_$datestamp.log";
open LOG, ">>","$logfile" or die $!;
LOG->autoflush(1);
while(1) {
my $sock = new IO::Socket::INET (PeerAddr => $hostname,
PeerPort => $port,
Proto => 'tcp',
Timeout => $timeout);
$cur_datestamp = strftime('%m-%d-%y_%H:%M:%S',localtime);
$cur_mday = (localtime(time))[3];
if(!$sock) {
print LOG "\n$cur_datestamp : Error - Could not create socket to $hostname on $port: $!";
sleep $interval;
next;
}
if($cur_mday != $mday) {
close(LOG);
$logfile = $logdir."$hostname\_$port\_tcp_socket\_$datestamp.log";
open LOG, ">>","$logfile" or die $!;
LOG->autoflush(1);
$mday = $cur_mday;
}
print LOG "\n$cur_datestamp : Socket created to $hostname on $port";
close($sock);
sleep $interval;
}
close(LOG);
sub usage
{
print "Invalid parameters \nUsage: ./tcp_socket.pl \n";
}
Please let me know, of any corrections/improvements.
The program attempts connection at a periodic interval, which is passed as 'execution_interval'.
#!/usr/bin/perl
use IO::Socket;
use POSIX qw/strftime/;
if (@ARGV != 4)
{
usage();
exit;
}
my $hostname = $ARGV[0];
my $port = $ARGV[1];
my $timeout = $ARGV[2];
my $interval = $ARGV[3];
my $logdir = "/tmp/";
my $datestamp = strftime('%m-%d-%y_%H:%M:%S',localtime);
$mday = (localtime(time))[3];
my $logfile = $logdir."$hostname\_$port\_tcp_socket\_$datestamp.log";
open LOG, ">>","$logfile" or die $!;
LOG->autoflush(1);
while(1) {
my $sock = new IO::Socket::INET (PeerAddr => $hostname,
PeerPort => $port,
Proto => 'tcp',
Timeout => $timeout);
$cur_datestamp = strftime('%m-%d-%y_%H:%M:%S',localtime);
$cur_mday = (localtime(time))[3];
if(!$sock) {
print LOG "\n$cur_datestamp : Error - Could not create socket to $hostname on $port: $!";
sleep $interval;
next;
}
if($cur_mday != $mday) {
close(LOG);
$logfile = $logdir."$hostname\_$port\_tcp_socket\_$datestamp.log";
open LOG, ">>","$logfile" or die $!;
LOG->autoflush(1);
$mday = $cur_mday;
}
print LOG "\n$cur_datestamp : Socket created to $hostname on $port";
close($sock);
sleep $interval;
}
close(LOG);
sub usage
{
print "Invalid parameters \nUsage: ./tcp_socket.pl
}
Please let me know, of any corrections/improvements.
Perl - send email without using sendmail
In a recent exercise, I was required to write a script which would attempt sending email through an smtp server instead of sendmail. At a periodic interval, the script would check if the smtp server is able to send emails or not. Basically, this script ran as a background process.
#!/usr/bin/perl
use Net::SMTP;
use POSIX qw/strftime/;
if (@ARGV != 5)
{
usage();
exit;
}
my $smtpmailhost = $ARGV[0];
my $from_address = $ARGV[1];
my $to_address = $ARGV[2];
my $timeout = $ARGV[3];
my $interval = $ARGV[4];
my $logdir = "/tmp/email_logs/";
my $datestamp = strftime('%m-%d-%y_%H:%M:%S',localtime);
$mday = (localtime(time))[3];
my $logfile = $logdir."$smtpmailhost\_email_log\_$datestamp.log";
open LOG, ">>","$logfile" or die $!;
LOG->autoflush(1);
while(1) {
$smtp = Net::SMTP->new($smtpmailhost,
Timeout => $timeout);
$cur_datestamp = strftime('%m-%d-%y_%H:%M:%S',localtime);
$cur_mday = (localtime(time))[3];
if(!$smtp) {
print LOG "\n$cur_datestamp : Error creating smtp object for $smtpmailhost: $!";
sleep $interval;
next;
}
if($cur_mday != $mday) {
close(LOG);
$logfile = $logdir."$smtpmailhost\_email_log\_$cur_datestamp.log";
open LOG, ">>","$logfile" or die $!;
LOG->autoflush(1);
$mday = $cur_mday;
}
$smtp->mail($from_address);
$smtp->to($to_address);
$smtp->data();
$smtp->datasend("Subject: $smtpmailhost - Test email message\n");
$smtp->datasend("\n");
$smtp->datasend("Test email has been sent successfully at $cur_datestamp!");
$smtp->dataend();
$smtp->quit;
print LOG "\n$cur_datestamp : Test Email sent via $smtpmailhost!";
sleep $interval;
}
close(LOG);
sub usage
{
print "Invalid parameters \nUsage: ./smtpemail_send.pl \n";
}
Please let me know, of any corrections/improvements.
#!/usr/bin/perl
use Net::SMTP;
use POSIX qw/strftime/;
if (@ARGV != 5)
{
usage();
exit;
}
my $smtpmailhost = $ARGV[0];
my $from_address = $ARGV[1];
my $to_address = $ARGV[2];
my $timeout = $ARGV[3];
my $interval = $ARGV[4];
my $logdir = "/tmp/email_logs/";
my $datestamp = strftime('%m-%d-%y_%H:%M:%S',localtime);
$mday = (localtime(time))[3];
my $logfile = $logdir."$smtpmailhost\_email_log\_$datestamp.log";
open LOG, ">>","$logfile" or die $!;
LOG->autoflush(1);
while(1) {
$smtp = Net::SMTP->new($smtpmailhost,
Timeout => $timeout);
$cur_datestamp = strftime('%m-%d-%y_%H:%M:%S',localtime);
$cur_mday = (localtime(time))[3];
if(!$smtp) {
print LOG "\n$cur_datestamp : Error creating smtp object for $smtpmailhost: $!";
sleep $interval;
next;
}
if($cur_mday != $mday) {
close(LOG);
$logfile = $logdir."$smtpmailhost\_email_log\_$cur_datestamp.log";
open LOG, ">>","$logfile" or die $!;
LOG->autoflush(1);
$mday = $cur_mday;
}
$smtp->mail($from_address);
$smtp->to($to_address);
$smtp->data();
$smtp->datasend("Subject: $smtpmailhost - Test email message\n");
$smtp->datasend("\n");
$smtp->datasend("Test email has been sent successfully at $cur_datestamp!");
$smtp->dataend();
$smtp->quit;
print LOG "\n$cur_datestamp : Test Email sent via $smtpmailhost!";
sleep $interval;
}
close(LOG);
sub usage
{
print "Invalid parameters \nUsage: ./smtpemail_send.pl
}
Please let me know, of any corrections/improvements.
Sunday, June 20, 2010
Yii + MySql + Wamp
First, I installed WampServer, which is a package of Apache, Php and MySql coupled into one. In the httpd.conf file I pointed the “DocumentRoot” and “Directory” configurations to the directory, where I would have my application and Yii framework.
I copied the Yii framwork in "d:/workspace/app_demo/”
To create the stub application from yii, I executed these commands for my setup:
>cd D:\workspace\app_demo
>yii\framework\yiic webapp myapp
-------
This created an application “myapp” under “app_demo” folder.
The “/app_demo/myapp/protected/config/main.php” file contains the database configurations. By default the database was pointed to an sqlite database. I changed that, to point to Mysql database. So I had these settings for my mysql database.
/* 'db'=>array(
'connectionString' => 'sqlite:'.dirname(__FILE__).'/../data/testdrive.db',
),*/
'db'=>array(
'connectionString' => 'mysql:host=localhost;dbname=pages_db',
'emulatePrepare' => true,
'username' => 'root',
'password' => '',
'charset' => 'utf8',
),
I also enabled logging through this file to look like this:
'log'=>array(
'class'=>'CLogRouter',
'routes'=>array( array('class'=>'CFileLogRoute',
'levels'=>'error, warning',
),
array('class'=>'CWebLogRoute',
), ), ),
-------
My database had two tables (user and address). The sql is shown below:
CREATE TABLE IF NOT EXISTS `address` (
`addressid` int(11) NOT NULL AUTO_INCREMENT,
`firstline` varchar(45) DEFAULT NULL,
`secondline` varchar(45) DEFAULT NULL,
`city` varchar(45) DEFAULT NULL,
`state` varchar(45) DEFAULT NULL,
`country` varchar(45) DEFAULT NULL,
PRIMARY KEY (`addressid`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
CREATE TABLE IF NOT EXISTS `user` (
`userid` bigint(20) NOT NULL AUTO_INCREMENT COMMENT 'This contains the userid of the user',
`fname` varchar(128) NOT NULL COMMENT 'This contains the first name of the user',
`lname` varchar(128) DEFAULT NULL COMMENT 'This contains the last name of the user',
`sex` varchar(1) NOT NULL COMMENT 'This contains the sex of the user',
`age` int(100) DEFAULT NULL COMMENT 'This contains the age of the user',
`creation_date` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT 'This contains the user account creation',
`user_addressid` int(11) DEFAULT NULL,
PRIMARY KEY (`userid`),
KEY `fk_user_address` (`user_addressid`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
ALTER TABLE `user` ADD CONSTRAINT `fk_user_address` FOREIGN KEY
(`user_addressid`) REFERENCES `address` (`addressid`) ON DELETE NO ACTION ON
UPDATE NO ACTION;
-------
I had to create corresponding models for the tables. After the database configuration, I ran the following commands to create the models in my app.
cd app_demo\myapp
D:\workspace\app_demo\myapp>protected\yiic shell index.php
This opened the Yii Interactive Tool.
Yii Interactive Tool v1.1 (based on Yii v1.1.2)
Please type 'help' for help. Type 'exit' to quit.
>> model *
The following model classes (tables) match your criteria:
1. Address (address)
2. User (user)
Do you want to generate the above classes? [Yes|No] yes
generate models/Address.php
generate fixtures/address.php
generate unit/AddressTest.php
generate models/User.php
generate fixtures/user.php
generate unit/UserTest.php
The following model classes are successfully generated:
Address, User
If you have a 'db' database connection, you can test these models now with:
$model=User::model()->find();
print_r($model);
-------
After this, I edited the actionIndex function in SiteController.php to look like this:
public function actionIndex()
{
// renders the view file 'protected/views/site/index.php'
// using the default layout 'protected/views/layouts/main.php'
$this->render('index', array(
'user' => User::model()->findAll()
));
}
In the index.php, I added the following table to display the records from the database:
foreach($user AS $us):?>
echo $us->fname;?>
echo $us->lname;?>
echo $us->age;?>
echo $us->user_address->city;?>
endforeach;?>
Then I pointed my browser to http://localhost/myapp/index.php and this generated a table with the results.
More on this later...
Sunday, April 11, 2010
Spidvid: Let's create better videos!
The start-up scene is always sprawling with action. Individuals keep coming up with brilliant ideas to tackle a problem at hand. If you ever heard of Youtube, you can relate to the fact, that the online video sharing platform is filled with low quality videos. Enter the new service round the corner - Spidvid. It is a platform which brings together video creators and professionals, who would ultimately produce quality entertaining videos. It doesn't end here; they go further, distribute the videos and generate compensation for their contribution to the effort.
It is an inventive concept accented by a beautiful user interface. It is easy to use and very responsive. You can choose any role you want on the video creation life cycle. You may be a video creator, a professional who can act, write, edit or even an amateur who has video ideas which, you would like to be created by others. This way you get in touch with people with similar interests and learn from their experiences.
Spidvid will raise the bar for online videos. It brings together people from different corners of the planet, with a common goal of producing quality videos. Right now, Spidvid is offered as a beta service. As more and more users join the bandwagon, the talent pool will get richer, as you have more contributors.
Getting content onto the website is a task which the marketing team needs to pay attention to. I would like to have a section to see some clips of the videos created on Spidvid.
Overall, it is a good beginning to a new frontier in video collaboration. Spidvid has given users the tools which they need to connect and develop videos outside a single fortified studio. By making it open to public, the content will cross the geographical boundaries and be enjoyed by a wide range of viewers.
So, let's get started and create some videos!
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