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

PHP XML Interface

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

Downloads:

package_scheduler.zip - basic communication classes
package_classes.zip - basic classes

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:

Temporary creation of jobs
Starting jobs
Adding jobs
Changing runtime
Etc.

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

Note: All changes, which are made using the xml-commands vie TCP-communication are not persistent. E.g. 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.

            <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

(The JobScheduler receives commands)

        <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>

(The JobScheduler answers)

        <?xml version="1.0" encoding="ISO-8859-1"?>
        <spooler>
          <answer time="2008-04-08 15:50:33.536">
            <ok/>
         </answer>
        </spooler>

Example with PHP Socket Communication (@fsockopen)

//open Socket
$socket = fsockopen("localhost", "4454", $errno,$errstr, 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>';
//send command
fputs( $socket, $cmd );
//Socket schließen
fclose( $socket);

After the JobScheduler has answered, you can view the Job in the Web GUI of the JobScheduler.

Evaluate Answer

The following function delivers the JobSchedulers answers in one string. The JobScheduler delivers the answer via the same socket, that was previously used during fputs, e.g. the answer can also be delivered directly after fputs.

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:

//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.

The advantage when using these classes is the easy handling when assembling the XML data stream.

Within your application you have to setup the Include directory.

ini_set( 'include_path', 'packages' );

Example

The example with these classes is realized as follows:

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 implentation
$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

For the following examples it is assumed that this code is preceeding.

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;
}

The use of the php-xml interface is explained. You can find a detailed documentation of the classes in the formats PHP and DOC under: http://www….

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

//-------------------------------------------------------------------------
// 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

    <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

//-------------------------------------------------------------------------
// 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

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

Change an Existing Order

//------------------------------------------------------------------------
//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

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

Start an Order with Submit

//-----------------------------------------------------------------------
// How to start an order with submit.
// This can be usefull, 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

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

Adding a Job

//------------------------------------------------------------------------
// 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 implentation
$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 forr 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

    <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

//------------------------------------------------------------------------
// 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;
}

Generated XML

    <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

//------------------------------------------------------------------------
// 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

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

Setting the runtime of a job

//-------------------------------------------------------------------
// 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

<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

//--------------------------------------------------------------
//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; }

br>

Generated XML

 <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

// 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; }

Generated XML

 <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

//--------------------------------------------------
// 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

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

Adding a Process_class to a hot folder

//-------------------------------------------------------------------------
// 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

<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

//-------------------------------------------------------------
// 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; }

Generated XML

<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

//-------------------------------------------------------------
// 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; }

Generated XML

<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

//-------------------------------------------------------------
// How to add a job_chain to a job_chain
//-------------------------------------------------------------
$job_chain = &get_instance('SOS_Scheduler_Job_Chain','scheduler/');
// First setting up two job_chains.
//First job_chain
$job_chain->name = "myJob_Chain";
//Adding some Job_chain_nodes
$job_chain->add_job("my_job1","1","50","99");
$job_chain->add_job("my_job2","2","50","99");
//Adding the endnodes
$job_chain->add_end_node("99");
$job_chain->add_end_node("50");
//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/nested")) { echo 'error occurred adding job_chain: ' . $modify_hot_folder_command->get_error(); exit; }
//Second job_chain
$next_job_chain = &get_instance('SOS_Scheduler_Job_Chain','scheduler/');
$next_job_chain->name = "myNext_Chain";
//Adding some Job_chain_nodes
$next_job_chain->add_job("my_job3","1","50","99");
$next_job_chain->add_job("my_job4","2","50","99");
//Adding the endnodes
$next_job_chain->add_end_node("99");
$next_job_chain->add_end_node("50");
//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($next_job_chain,"./test/nested")) { echo 'error occurred adding job_chain: ' . $modify_hot_folder_command->get_error(); exit; }
//Now creating a third job_chain which contains the first and the second.
$nested_job_chain = &get_instance('SOS_Scheduler_Job_Chain','scheduler/');
$nested_job_chain->name = "myNestedJob_Chain";
//Adding the first nested job_chain.
$job_chain_node = new SOS_Scheduler_Job_Chain_Node_Job_Chain("100");
//Setting some properties
$job_chain_node->state = "100";
$job_chain_node->next_state = "200";
$job_chain_node->error_state = "1200";
$job_chain_node->job_chain = "myJob_Chain";
//Adding the job_chain_node to the job_chain;
$nested_job_chain->add_node($job_chain_node);
//Adding a second job_chain with -> add_job_chain();
$nested_job_chain->add_job_chain("myNext_Chain","200","300","1200");
//Adding the endnodes
$nested_job_chain->add_end_node("1200");
$nested_job_chain->add_end_node("300");
//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($nested_job_chain,"./test/nested")) { echo 'error occurred adding job_chain: ' . $modify_hot_folder_command->get_error(); exit; }

Generated XML

 <modify_hot_folder>
 <job_chain name="myNestedJob_Chain">

   <job_chain_node.job_chain
      job_chain="myJob_Chain"
      state="100" next_state="200"
      error_state="1200"/>

   <job_chain_node.job_chain
      job_chain="myNext_Chain"
      state="200"
      next_state="300"
      error_state="1200"/>

   <job_chain_node.end
      state="1200"/>
   <job_chain_node.end
      state="300"/>

</job_chain>
</modify_hot_folder>

PHP XML Interface

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

Downloads:

package_scheduler.zip - basic communication classes
package_classes.zip - basic classes

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:

Temporary creation of jobs
Starting jobs
Adding jobs
Changing runtime
Etc.

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

Note: All changes, which are made using the xml-commands vie TCP-communication are not persistent. E.g. 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.

            <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

(The JobScheduler receives commands)

        <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>

(The JobScheduler answers)

        <?xml version="1.0" encoding="ISO-8859-1"?>
        <spooler>
          <answer time="2008-04-08 15:50:33.536">
            <ok/>
         </answer>
        </spooler>

Example with PHP Socket Communication (@fsockopen)

//open Socket
$socket = fsockopen("localhost", "4454", $errno,$errstr, 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>';
//send command
fputs( $socket, $cmd );
//Socket schließen
fclose( $socket);

After the JobScheduler has answered, you can view the Job in the Web GUI of the JobScheduler.

Evaluate Answer

The following function delivers the JobSchedulers answers in one string. The JobScheduler delivers the answer via the same socket, that was previously used during fputs, e.g. the answer can also be delivered directly after fputs.

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:

//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.

The advantage when using these classes is the easy handling when assembling the XML data stream.

Within your application you have to setup the Include directory.

ini_set( 'include_path', 'packages' );

Example

The example with these classes is realized as follows:

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 implentation
$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

For the following examples it is assumed that this code is preceeding.

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;
}

The use of the php-xml interface is explained. You can find a detailed documentation of the classes in the formats PHP and DOC under: http://www….

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

//-------------------------------------------------------------------------
// 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

    <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

//-------------------------------------------------------------------------
// 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

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

Change an Existing Order

//------------------------------------------------------------------------
//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

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

Start an Order with Submit

//-----------------------------------------------------------------------
// How to start an order with submit.
// This can be usefull, 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

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

Adding a Job

//------------------------------------------------------------------------
// 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 implentation
$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 forr 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

    <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

//------------------------------------------------------------------------
// 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;
}

Generated XML

    <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

//------------------------------------------------------------------------
// 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

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

Setting the runtime of a job

//-------------------------------------------------------------------
// 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

<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

//--------------------------------------------------------------
//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; }

br>

Generated XML

 <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

// 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; }

Generated XML

 <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

//--------------------------------------------------
// 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

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

Adding a Process_class to a hot folder

//-------------------------------------------------------------------------
// 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

<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

//-------------------------------------------------------------
// 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; }

Generated XML

<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

//-------------------------------------------------------------
// 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; }

Generated XML

<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

//-------------------------------------------------------------
// How to add a job_chain to a job_chain
//-------------------------------------------------------------
$job_chain = &get_instance('SOS_Scheduler_Job_Chain','scheduler/');
// First setting up two job_chains.
//First job_chain
$job_chain->name = "myJob_Chain";
//Adding some Job_chain_nodes
$job_chain->add_job("my_job1","1","50","99");
$job_chain->add_job("my_job2","2","50","99");
//Adding the endnodes
$job_chain->add_end_node("99");
$job_chain->add_end_node("50");
//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/nested")) { echo 'error occurred adding job_chain: ' . $modify_hot_folder_command->get_error(); exit; }
//Second job_chain
$next_job_chain = &get_instance('SOS_Scheduler_Job_Chain','scheduler/');
$next_job_chain->name = "myNext_Chain";
//Adding some Job_chain_nodes
$next_job_chain->add_job("my_job3","1","50","99");
$next_job_chain->add_job("my_job4","2","50","99");
//Adding the endnodes
$next_job_chain->add_end_node("99");
$next_job_chain->add_end_node("50");
//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($next_job_chain,"./test/nested")) { echo 'error occurred adding job_chain: ' . $modify_hot_folder_command->get_error(); exit; }
//Now creating a third job_chain which contains the first and the second.
$nested_job_chain = &get_instance('SOS_Scheduler_Job_Chain','scheduler/');
$nested_job_chain->name = "myNestedJob_Chain";
//Adding the first nested job_chain.
$job_chain_node = new SOS_Scheduler_Job_Chain_Node_Job_Chain("100");
//Setting some properties
$job_chain_node->state = "100";
$job_chain_node->next_state = "200";
$job_chain_node->error_state = "1200";
$job_chain_node->job_chain = "myJob_Chain";
//Adding the job_chain_node to the job_chain;
$nested_job_chain->add_node($job_chain_node);
//Adding a second job_chain with -> add_job_chain();
$nested_job_chain->add_job_chain("myNext_Chain","200","300","1200");
//Adding the endnodes
$nested_job_chain->add_end_node("1200");
$nested_job_chain->add_end_node("300");
//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($nested_job_chain,"./test/nested")) { echo 'error occurred adding job_chain: ' . $modify_hot_folder_command->get_error(); exit; }

Generated XML

 <modify_hot_folder>
 <job_chain name="myNestedJob_Chain">

   <job_chain_node.job_chain
      job_chain="myJob_Chain"
      state="100" next_state="200"
      error_state="1200"/>

   <job_chain_node.job_chain
      job_chain="myNext_Chain"
      state="200"
      next_state="300"
      error_state="1200"/>

   <job_chain_node.end
      state="1200"/>
   <job_chain_node.end
      state="300"/>

</job_chain>
</modify_hot_folder>

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

PHP XML Interface

JobScheduler – Program Interface

Communication

Communication with PHP Classes

Commands with xml-php Interface

Example of Use

Adding a Order to a Job Chain

Remove an Order from a Job Chain

Change an Existing Order

Start an Order with Submit

Adding a Job

Deleting a Job

Starting a Job

Setting the runtime of a job

Setting the runtime of an order

Working with hot folders

Adding a Job to a hot folder

Adding a Lock to a hot folder

Adding a Process_class to a hot folder

Adding a Job_Chain to a hot folder

Adding an Order to a hot folder

Adding a nested job chain to a hot folder

PHP XML Interface

JobScheduler – Program Interface

Communication

Communication with PHP Classes

Commands with xml-php Interface

Example of Use

Adding a Order to a Job Chain

Remove an Order from a Job Chain

Change an Existing Order

Start an Order with Submit

Adding a Job

Deleting a Job

Starting a Job

Setting the runtime of a job

Setting the runtime of an order

Working with hot folders

Adding a Job to a hot folder

Adding a Lock to a hot folder

Adding a Process_class to a hot folder

Adding a Job_Chain to a hot folder

Adding an Order to a hot folder

Adding a nested job chain to a hot folder