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Table of Contents

Introduction - PHP XML Interface

How to communicate with JobScheduler from PHP scripts e.g. to add jobs.

This example describes how you can start jobs, add orders to job chains by your application. The examples are written in PHP.

Downloads

Instructions

  • Unzip package_scheduler.zip to folder package in your web folder .
  • Unzip package_class.zip to folder package in your web folder

How it works

JobScheduler – Program Interface

This document describes how applications can communicate with the JobScheduler. Possible tasks could be as follows:

...

The communication is explained by the means of PHP examples. However you can use any other programming language of your choice.

Communication

The communication with JobScheduler takes place via TCP, where XML commands are transmitted. You can check the documentation for the possible XML commands: http://www.sos-berlin.com/doc/en/scheduler.doc/index.xml

...

All changes, which are made using the xml-commands vie TCP-communication are not persistent. This means, for example, added jobs are no longer available after restarting the JobScheduler.

Example

Adding of a job with the name myJob. The Job runs once a day at 6pm and lists the table c:\temp.

Code Block
            <add_jobs>
              <job name="myJob"
                   title = "my first job">
                <script language="shell">
                <![CDATA[
                    dir c:\temp
                ]]>
                </script>
                <run_time>
                   <period single_start="18:00"/>
                </run_time>
              </job>
           </add_jobs>

Example with Telnet

telnet localhost 4454

The following XML string can be send e.g. via Telnet

...

Code Block
languagephp
linenumberstrue
       function get_answer($socket) {
       $answer = ''; $s = '';
       while ( !ereg("</spooler>", $s) && !ereg("<ok[/]?>", $s) ) {
         $s = fgets($socket, 1000);

         if (strlen($s) == 0) { break; }
         $answer .= $s;
         $s = substr($answer, strlen($answer)-20);


         // chr(0) am Ende entfernen.
         if (substr($answer, -1) == chr(0)) {
           $answer = substr($answer, 0, -1);
           break;
         }
       }
       $answer = trim($answer);

       return $answer;
     }

Communication with PHP Classes

For an application that sends commands to the JobScheduler it is very usefull to have a proper error handling. Apart from that, a higher level of abstraction is useful for understanding the source code. For this reason SOS GmbH offers a class for processing the communication. The class encapsulates the socket calls and provides a method for reading XML answers of the JobScheduler.

Installation

  • In your web directory set up a file called: packages.Into the folder scheduler put the file sos_scheduler_command_inc.php and into the folder class put the file sos_class.inc.php.
    You can find these files unter scheduler/php_xml_interface/packages.zip
  • In your application program include the class with:
    require_once( 'scheduler/sos_scheduler_command.inc.php');

Example

The example can be realized with these classes as follows:

Code Block
languagephp
linenumberstrue
//open socket
$command = new SOS_Scheduler_Command(‘localhost’,4454, 60);
//build command
$cmd = '<add_jobs><job name="myJob" title = "my first job"> <script';
$cmd += 'language="shell">  <![CDATA[dir c:\temp  ]]>  </script> ';
$cmd += '<run_time> <period ';
$cdm += 'single_start="18:00"/></run_time></job></add_jobs>';
if (!$command->connect()) {
	echo$get_error(). __FILE__ . __LINE__ ;
	return 0;
}
//send command
$this->command->command($cmd);
if ($command->get_answer_error()) {
	echo$command->get_error() . ‘ ‘ . __FILE__ . ‘ ‘ . __LINE__ ;
}
//close socket
$command->disconnect();

 

Commands with xml-php Interface

  • One of the key tasks for the communication with JobScheduler is the creation of XML commands. To this end, you could use string functions or DOM classes.
  • Another possibility is to use the xml-php-interface. The interface encapsulates the construction of XML commands and the communication with the JobScheduler. In this case the classes described in Communication with PHP Classes are used.

...

Code Block
languagephp
linenumberstrue
ini_set( 'include_path', 'packages' );


Example

The example with these classes is realized as follows:

Code Block
languagephp
linenumberstrue
if(!defined('APP_SCHEDULER_HOST')) { define ( 'APP_SCHEDULER_HOST', 'localhost' ); }
if(!defined('APP_SCHEDULER_PORT')) {define( 'APP_SCHEDULER_PORT', '4454' ); }

//load missing classes and returns an object of the class
function &get_instance($class, $include_path='scheduler/', $extension='.inc.php') {
	if ( !class_exists($class) ) {
		include( $include_path . strtolower($class) . $extension );
	}
	$object = new $class;
	$object->host=APP_SCHEDULER_HOST;
	$object->port=APP_SCHEDULER_PORT;
	return $object;   
}
$job = &get_instance('SOS_Scheduler_Job','scheduler/');

//Setting some properties
$job->name           = "myJob";
$job->title          = "my first job ";

//Set the implementation
$job->script('shell')->script_source='dir c:\temp';

//The job has a runtime 
$job->run_time()->period()->single_start = "18:00";
$job_command = &get_instance('SOS_Scheduler_JobCommand_Launcher','scheduler/');

if (! $job_command->add_jobs($job))  {
	echo'error occurred adding job: ' . $job_command->get_error(); 
	exit; 
}

Example of Use

The following code should precede the code presented in the examples below:

...

At the end of each example you can see the XML code that will be send to JobScheduler.

Adding a Order to a Job Chain

Code Block
languagephp
firstline15
linenumberstrue
//-------------------------------------------------------------------------  
// How to add an order to an existing jobchain
//-------------------------------------------------------------------------    

$order_launcher =
       &get_instance('SOS_Scheduler_OrderCommand_Launcher','scheduler/');

//Create an add_order object (SOS_Scheduler_Command_Add_Order).
$order = $order_launcher->add_order('jobchain',1);

//Setting some properties of the order object
$order->id='sostest_12';
$order->replace="yes";
$order->priority="10"; 
$order->title="Testorder"; 
$order->web_service=""; 
$order->at="now+60";
$order->addParam('test','any value');

// Sending XML to the JobScheduler
if (!$order_launcher->execute($order)) {
	echo'error occurred adding order: ' .  $order_launcher->get_error();
	exit;
}

 

...

Generated XML

Code Block
     <add_order
        at="now+60"
        id="sostest_12"
        job_chain="jobchain"
        priority="10"
        replace="yes"
        state="1"
        title="Testorder">
    <params>
    <param name="test" value="any value"/>
    </params>
    </add_order>


...

Remove an Order from a Job Chain

Code Block
languagephp
firstline15
linenumberstrue
//-------------------------------------------------------------------------  
// How to add an order to an existing jobchain
//-------------------------------------------------------------------------    

$order_launcher =
       &get_instance('SOS_Scheduler_OrderCommand_Launcher','scheduler/');

//Create an add_order object (SOS_Scheduler_Command_Add_Order).
$order = $order_launcher->add_order('jobchain',1);

//Setting some properties of the order object
$order->id='sostest_12';
$order->replace="yes";
$order->priority="10"; 
$order->title="Testorder"; 
$order->web_service=""; 
$order->at="now+60";
$order->addParam('test','any value');

// Sending XML to the JobScheduler
if (!$order_launcher->execute($order)) {
	echo'error occurred adding order: ' .  $order_launcher->get_error();
	exit;
} 

 

...


Generated XML

Code Block
  <remove_order  order="sostest_13" job_chain="jobchain"/>
 

...

Change an Existing Order

Code Block
languagephp
firstline15
linenumberstrue
//------------------------------------------------------------------------
//How to change an existing order
//------------------------------------------------------------------------  

//starting with adding an order.
$order_launcher =
       &get_instance('SOS_Scheduler_OrderCommand_Launcher','scheduler/');
$order = $order_launcher->add_order('jobchain',3);
$order->replace='yes';
$order->id='sostest_14';
$order->run_time()->single_start="22:00";

if (!$order_launcher->execute($order)) {
	echo'error occurred adding order: ' . $order_launcher->get_error(); exit;
}

//Now change the order.state
$order = $order_launcher->modify_order('jobchain','sostest_14');
$order->state=2;
if (!$order_launcher->execute($order)) {
	echo'error occurred modifying order: ' . $order_launcher->get_error();
	exit;
} 

 

...

Generated XML

Code Block
 <modify_order  order="sostest_14" job_chain="jobchain" state="2"></modify_order>

...

Start an Order with Submit

Code Block
languagephp
firstline15
linenumberstrue
//-----------------------------------------------------------------------
// How to start an order with submit. 
// This can be useful, when you know orders jobchain, id, state and starttime.
//------------------------------------------------------------------------

$order_launcher =
       &get_instance('SOS_Scheduler_OrderCommand_Launcher','scheduler/');

if (! $order_launcher->submit('jobchain','sostest_15',2,'now+30')) {
	echo'error occurred submitting order: ' . $order_launcher->get_error();
	exit;
}

 

...


Generated XML

Code Block
    <add_order
      at="now+30"
      id="sostest_15"
      job_chain="jobchain"
      replace="yes"
      state="2">
    </add_order>
 

...

Adding a Job

Code Block
languagephp
firstline15
linenumberstrue
//------------------------------------------------------------------------
// How to add a job
//------------------------------------------------------------------------

$job = &get_instance('SOS_Scheduler_Job','scheduler/');

//Setting some properties
$job->force_idle_timeout   = "yes";
$job->idle_timeout         = "1000";
$job->ignore_signals       = "all";
$job->java_options         = "java";
$job->min_tasks            = "2";
$job->name                 = "test_jobname3"; 
$job->order                = "no";
$job->priority             = "1" ;
$job->stop_on_error        = "no";
$job->tasks                = "4";
$job->temporary            = "no"; 
$job->timeout              = "10";
$job->title                = "my job";
$job->visible              = "yes"; 

//Defining some parameters
$job->addParam('var1','value1');
$job->addParam('var2','value2');

//Set the implementation
$job->script('javascript')->script_source='a=1;';

//The job has a runtime
$job->run_time()->period()->single_start = "10:00";
$job->run_time()->period()->single_start = "11:00";
$job->run_time()->at('2006-12-24 12:20');
$job->run_time()->at('2006-12-24 12:25');
$job->run_time()->at('2006-12-24 12:35');

/** A period for day=1 */
$p = $job->run_time()->weekdays('1')->period();
$p->single_start = '07:30';
$job_command = &get_instance('SOS_Scheduler_JobCommand_Launcher','scheduler/');

//First removing the job    
$job_command->remove($job->name);
if (! $job_command->add_jobs($job))  {
	echo'error occurred adding job: ' . $job_command->get_error();
	exit;
} 

 

...


Generated XML

Code Block
   <job
      force_idle_timeout="yes"
      idle_timeout="1000"
      ignore_signals="all"
      java_options="java"
      min_tasks="2"
      name="test_jobname3"
      order="no"
      priority="1"
      stop_on_error="no"
      tasks="4"
      temporary="no"
      imeout="10"
      itle="my job"
      isible="yes">
    <params>
      param name="var1" value="value1"/>
      param name="var2" value="value2"/>
    </params>
    <script language="javascript">
      ![CDATA[a=1;]]></script>
    <run_time>
      period single_start="10:00"/>
      period single_start="11:00"/>
      at at="2006-12-24 12:20"/>
      at at="2006-12-24 12:25"/>
      at at="2006-12-24 12:35"/>
      weekdays>
        day day="1">
        period single_start="07:30"/>
        day>
      </weekdays>
    </run_time>
    </job> 
 

...

Deleting a Job

Code Block
languagephp
firstline15
linenumberstrue
//------------------------------------------------------------------------       
// How to to delete a job 
//------------------------------------------------------------------------  
// First we add the job to have one, which we can remove
$job = &get_instance('SOS_Scheduler_Job','scheduler/');
$job->name         = "jobtoberemoved";
$job->title        = "my removed job";
$job->visible      = "yes"; 
//Set the implentation
$job->script('javascript')->script_source='a=1;';
$job_command = &get_instance('SOS_Scheduler_JobCommand_Launcher','scheduler/');
if (! $job_command->add_jobs($job)) {
echo'error occurred adding job: ' . $job_command->get_error(); exit;
}
//Now the job will be removed
if (! $job_command->remove($job->name)) {
	echo'error occurred removing job: ' . $job_command->get_error(); 
	exit;
} 

...

Code Block
    <job name="jobtoberemoved" tasks="1" temporary="no"
    title="my removed
    job" visible="yes">
    <script language="javascript">
    <![CDATA[a=1;]]>
    </script>
    </job>

    <modify_job job="jobtoberemoved" cmd="remove"/>

 

...

Starting a Job

Code Block
languagephp
firstline15
linenumberstrue
//------------------------------------------------------------------------
//  How to Start a job
//------------------------------------------------------------------------

// First we add the job to have one, which we can start
$job = &get_instance('SOS_Scheduler_Job','scheduler/');
$job->name             = "test_jobname3"; 
$job->title            = "my job";
$job->visible          = "yes"; 
$job->script('javascript')->script_source='a=1';
$job_command = &get_instance('SOS_Scheduler_JobCommand_Launcher','scheduler/');

if (! $job_command->add_jobs($job))  {
	echo'error occurred adding job: ' . $job_command->get_error(); exit;
}

if (! $job_command->start($name='test_jobname3', $start_at="now" )) {
	echo'error occurred submitting job: ' . $job_command->get_error();
	exit;
}

 

...


Generated XML

Code Block
 <start_job job="test_jobname3" at="now"></start_job>
    

...

 

Setting the runtime of a job

Code Block
languagephp
firstline15
linenumberstrue
//-------------------------------------------------------------------
//  How to set the runtime of a job. Some examples
//-------------------------------------------------------------------

// First we add the job to have one, which we can start
$job = &get_instance('SOS_Scheduler_Job','scheduler/');
$job->name                  = "test_jobname33"; 
$job->title                 = "test_jobname33";
$job->visible                 = "yes";   
$job->script('javascript')->script_source='a=1';
$job_command = &get_instance('SOS_Scheduler_JobCommand_Launcher','scheduler/');

if (! $job_command->add_jobs($job))  {echo'error occurred adding job: ' . $job_command->get_error(); exit; }

//Start on the 28.st at 11:00
$job->run_time()->monthdays('28')->period()->single_start='11:00';

//Adding a period 
$period = new SOS_Scheduler_Runtime_Period();
$period->begin='12:00'; $period->end='13:00';
$period->repeat='60';
$job->run_time()->date('2006-30-11')->addPeriod($period);

//starting at 11:00
$job->run_time()->at('11:00');
if (!$job_command->execute($job)) {echo'error occurred : ' . $job_command->get_error(); exit; } 

 

...


Generated XML

Code Block
 <job name="test_jobname33"
     tasks="1"
     title="test_jobname33"
     visible="yes">
<script language="javascript"><![CDATA[a=1]]></script>

<run_time>
<at at="11:00"/>
<date date="2006-30-11">
<period begin="12:00"
        end="13:00"
        repeat="60"/>
</date>
<monthdays>
       <day day="28">
          <period single_start="11:00"/>
       </day>
</monthdays>
</run_time>
</job>

 

...

 

Setting the runtime of an order

Code Block
languagephp
firstline15
linenumberstrue
//--------------------------------------------------------------
//How to set the runtime of an order. Some examples
//--------------------------------------------------------------

//adding an order with a runtime

$order_launcher = &get_instance('SOS_Scheduler_OrderCommand_Launcher','scheduler/');
$order = $order_launcher->add_order('jobchain',3);
$order->replace='yes';
$order->id='sostest_14';

//Start on the 28.st at 11:00
$order->run_time()->monthdays('28')->period()->single_start='12:00';

//Adding a period 
$period = new SOS_Scheduler_Runtime_Period();
$period->begin='12:00'; $period->end='13:00';
$period->repeat='60';
$order->run_time()->ultimos('22')->addPeriod($period);

//starting at 11:00 
$order->at='2008-11-01 13:00';

if (!$order_launcher->execute($order)) {echo'error occurred adding order: ' . $order_launcher->get_error(); exit; }

 

...


Generated XML

Code Block
  <add_order
  at="2008-11-01 13:00"
  id="sostest_14"
  job_chain="jobchain"
  replace="yes"
  state="3">
<run_time>
   <monthdays>
     <day day="28">
       <period single_start="12:00"/>
    </day></monthdays>
    <ultimos>
      <day day="22">
       <period begin="12:00" end="13:00" repeat="60"/>
      </day>
    </ultimos>
</run_time>
</add_order>


 

...

Working with hot folders

 

...

Adding a Job to a hot folder

Code Block
languagephp
linenumberstrue
 // First we add the job to have one, which we can start
$job = &get_instance('SOS_Scheduler_Job','scheduler/');
$job->name                  = "test_jobname77"; 
$job->title                 = "test_jobname77";
$job->visible                 = "yes";   
$job->script('javascript')->script_source='a=1';

$modify_hot_folder_command = &get_instance('SOS_Scheduler_HotFolder_Launcher','scheduler/');

if (! $xml=$modify_hot_folder_command->store($job,"./test"))  {
	echo'error occurred adding job: ' . $modify_hot_folder_command->get_error();
	exit;
}

...

Code Block
<modify_hot_folder folder="./test">
   <job name="test_jobname77" tasks="1" temporary="no" title="test_jobname77" visible="yes">
     <script language="javascript"><![CDATA[a=1]]></script>
   </job>
</modify_hot_folder>

 

...

 

 

Adding a Lock to a hot folder

Code Block
languagephp
linenumberstrue
 //--------------------------------------------------
//  How to add a lock to hot folder
//--------------------------------------------------

// First we add the lock to have one, which we can start
$lock = &get_instance('SOS_Scheduler_Lock','scheduler/');

//Setting some properties
$lock->max_non_exclusive           = 1;
$lock->name="myLock";

//Adding the lock to the hotfolder
$modify_hot_folder_command = &get_instance('SOS_Scheduler_HotFolder_Launcher','scheduler/');

if (! $xml=$modify_hot_folder_command->store($lock,"./test"))  {
	echo'error occurred adding lock: ' . $modify_hot_folder_command->get_error(); 
	exit;
}

 

...


Generated XML

Code Block
<modify_hot_folder folder="./test">
  <lock name="myLock" max_non_exclusive="1"></lock>
</modify_hot_folder>
 
 

...

Adding a Process_class to a hot folder

Code Block
languagephp
linenumberstrue
//-------------------------------------------------------------------------
//  How to add a process_class to hot folder
//-------------------------------------------------------------------------
// First we add the process_class to have one, which we can start
$process_class = &get_instance('SOS_Scheduler_Process_class','scheduler/');
//Setting some properties
$process_class->max_processes           = 1;
$process_class->name=

 

...


Generated XML

Code Block
 <modify_hot_folder folder="./test">
   <process_class
      name="myProcess_class"
      max_processes="1" replace="yes">
   </process_class>
 </modify_hot_folder>
  

...

Adding a Job_Chain to a hot folder

Code Block
languagephp
linenumberstrue
//-------------------------------------------------------------
//  How to add a job_chain to hot folder
//-------------------------------------------------------------

$job_chain = &get_instance('SOS_Scheduler_Job_Chain','scheduler/');

//Setting some properties
$job_chain->name           = "myJob_Chain";

//The job has a file_order_sources 
$job_chain->file_order_source("/myDir","1");
$job_chain->file_order_source("/myOtherDir","2");

//The job has a file_order_sinks
$job_chain->file_order_sink("6")  ->remove="yes";
$job_chain->file_order_sink("99") ->remove="yes";
$job_chain->file_order_sink("999")->remove="yes";

//Adding some Job_chain_nodes
$job_chain->add_job("my_job1","1","2","99");
$job_chain->add_job("my_job2","2","3","99");
$job_chain->add_job("my_job3","3","4","99");
$job_chain->add_job("my_job4","4","5","999");

//or adding a node
$job_chain_node = new SOS_Scheduler_Job_Chain_Node();

//Setting some properties
$job_chain_node->state          = "5";  
$job_chain_node->error_state      = "99";    
$job_chain_node->next_state     = "6";    
$job_chain_node->on_error       = "suspend";
$job_chain_node->job              = "myJob5";

//adding the node
$job_chain->add_node($job_chain_node);

//Adding the job_chain to the hotfolder
$modify_hot_folder_command = &get_instance('SOS_Scheduler_HotFolder_Launcher','scheduler/');
if (! $xml=$modify_hot_folder_command->store($job_chain,"./test/chains"))  {
	echo'error occurred adding job chain: ' . $modify_hot_folder_command->get_error();
	exit;
}

...

Code Block
 <modify_hot_folder folder="./test/chains">
  <job_chain name="myJob_Chain">
    <file_order_source directory="/myDir"/>
    <file_order_source directory="/myOtherDir"/>
    <file_order_sink state="6" remove="yes"/>
    <file_order_sink state="99" remove="yes"/>
    <file_order_sink state="999" remove="yes"/>
    <job_chain_node job="my_job1" state="1" next_state="2" error_state="99"/>
    <job_chain_node job="my_job2" state="2" next_state="3" error_state="99"/>
    <job_chain_node job="my_job3" state="3" next_state="4" error_state="99"/>
    <job_chain_node job="my_job4" state="4" next_state="5" error_state="999"/>
    <job_chain_node job="myJob5" state="5" next_state="6" error_state="99"/>
    </job_chain>
</modify_hot_folder>

 

 

...

Adding an Order to a hot folder

Code Block
languagephp
linenumberstrue
//-------------------------------------------------------------
// How to add an order to a hot_folder
//-------------------------------------------------------------

$order_launcher = &get_instance('SOS_Scheduler_OrderCommand_Launcher','scheduler/');

//Create an order object (SOS_Scheduler_Command_Order).
$order = $order_launcher->order('myJob_Chain',1);

//Setting some properties of the order object
$order->id='my_Order';
$order->replace="yes";
$order->priority="10"; 
$order->title="Testorder"; 
$order->web_service=""; 
$order->at="now+60";
$order->addParam('test','any value');

//Adding the job_chain to the hotfolder
$modify_hot_folder_command = &get_instance('SOS_Scheduler_HotFolder_Launcher','scheduler/');

if (! $xml=$modify_hot_folder_command->store($order,"./test/chains"))  { 
	echo 'error occurred adding order: ' . $modify_hot_folder_command->get_error();
	exit; 
} 

...

Code Block
<modify_hot_folder folder="./test/chains">
<order  at="now+60" id="my_Order" job_chain="myJob_Chain" priority="10" replace="yes" state="1" title="Testorder">
<params>
<param name="test" value="any value"/>
</params>
</order>
</modify_hot_folder>

 

...

Adding a nested job chain to a hot folder

Code Block
languagephp
linenumberstrue
//-------------------------------------------------------------
// How to add an order to a hot_folder
//-------------------------------------------------------------

$order_launcher = &get_instance('SOS_Scheduler_OrderCommand_Launcher','scheduler/');

//Create an order object (SOS_Scheduler_Command_Order).
$order = $order_launcher->order('myJob_Chain',1);

//Setting some properties of the order object
$order->id='my_Order';
$order->replace="yes";
$order->priority="10"; 
$order->title="Testorder"; 
$order->web_service=""; 
$order->at="now+60";
$order->addParam('test','any value');

//Adding the job_chain to the hotfolder
$modify_hot_folder_command = &get_instance('SOS_Scheduler_HotFolder_Launcher','scheduler/');
if (! $xml=$modify_hot_folder_command->store($order,"./test/chains"))  {
	echo'error occurred adding order: ' . $modify_hot_folder_command->get_error();
	exit; 
}

...