Setting Cron job with cakephp 2.0 in Easy steps

 

Setting Cron job with cakephp 2.0 in Easy steps: 

 

In some cases we need to do some process automatically every day /every hour / every week. For this 

we can use the Cron job. To see more about Cron Job Click here.

 

This example will shows that sending email to customers every 6 hours based on some  conditions:

 

My Project name is Sample and the Sample folder contains the following folders:

Sample

  — app

   — Controller etc

  —  lib

  — vendors

  — plugins

 

 

Step 1:  Go to the following folder

           Project folder/app/Console/Command/ 

 

Step 2: Create a file named MyShell.php  (You can create the file as per your own risk like SampleShell, CalShell etc)

 

Step 3: Paste the following code in that file. 

 

   class MyShell extends Shell {

    function main()

    {

        App::import(‘Component’, ‘BusinessLogic’);

        $businessLogic = & new BusinessLogicComponent();

        $businessLogic->initialize();

        $settings = $businessLogic->senReminderEmail();

           // senReminderEmail Mail function is defined in my Controller/Components/BusinessLogicComponent.php File

    }

    function expireMail()

    {

 App::import(‘Component’, ‘BusinessLogic’);

        $businessLogic = & new BusinessLogicComponent();

        $businessLogic->initialize();

        $settings = $businessLogic->senExpireEmail();

     // senExpireEmail Mail function is defined in my Controller/Components/BusinessLogicComponent.php File

    }

}

?>

 

 

Step 4 : Go to the following folder:   Project folder/app/Vendor/Shell/

            Inside that create a file name called cron.sh and paste the following code.  Give 777 permission to this file.

 #!/bin/bash

# lock logic for semaphore – http://mywiki.wooledge.org/BashFAQ/045

lockdir=/tmp/cron_sh.lock

echo >&2 “$(date ‘+%Y-%m-%d %H:%M:%S’)

 

 #################################################”

if mkdir “$lockdir”

 then    # directory did not exist, but was created successfully

     echo >&2 “successfully acquired lock: $lockdir”

 

##########################################################

 

# —————————————————————–

# Project name —>

# =========

 

 

# Project folder/lib/Cake/Console/cake – app  Project folder/app cron

/var/www/Sample/lib/Cake/Console/cake – app /var/www/Sample/app cron

################################################################

rmdir “$lockdir”

 else

     echo >&2 “cannot acquire lock, giving up on $lockdir”

     exit 0

 fi 

 

Step 5: To check that the cron functions are working or not, Go to the following folder in terminal

 Project folder/app/  #example  /var/www/Sample/app

and run the following Command :

 

 /var/www/Sample/app$  Console/cake myshell

The above line will execute the main function that we written in the MyShell.php file

To call other function just Console/cake my function_name

example: Console/cake my expireMail

 

Check the above functions are executing without any errors. If it executes with out any error then go for next step

 

Step 6: Now we are going to set the crontab. Just go to the Project folder through terminal and type crontab -e

 

It will open the editor in that paste the following code:

#The below line will execute the function every 6 hours

# *  */6   *    *   * /var/www/Sample/app/Console/cakeshell  my -cli /usr/bin -console /var/www/Sample/lib/Cake/Console -app /var/www/Sample/app

 

#The below line will execute the function named “expireMail” from myshell.php every 6 hours and it will log the execution in to the Home/error_file.log file

# *  */6   *   *   * /var/www/Sample/app/Console/cakeshell  my -cli /usr/bin -console /var/www/Sample/lib/Cake/Console -app /var/www/Sample/app >> ~/error_file.log