Upsmon actions scheduler by eventlog. Start scheduled tasks based on the events logged on the eventlog file by Upsmon.

UpsmonActionsScheduler.php

<?php
/*
PHPTail class from:
https://github.com/taktos/php-tail
https://code.google.com/p/php-tail/
*/
class PHPTail {
	/**
	 * Location of the log file we're tailing
	 * @var string
	 */
	private	$log = "";
	/**
	 * This variable holds the maximum amount of bytes this application can load into memory (in bytes).
	 * @var string
	 */
	private $maxSizeToLoad;
	/**
	 * 
	 * PHPTail constructor
	 * @param string $log the location of the log file
	 * @param integer $defaultUpdateTime The time between AJAX requests to the server. 
	 * @param integer $maxSizeToLoad This variable holds the maximum amount of bytes this application can load into memory (in bytes). Default is 2 Megabyte = 2097152 byte
	 */
	public function __construct($log, $maxSizeToLoad = 2097152) {
		$this->log = $log;
		$this->maxSizeToLoad = $maxSizeToLoad;
	}
	
	/**
	 * This function is in charge of retrieving the latest lines from the log file
	 * @param string $lastFetchedSize The size of the file when we lasted tailed it.  
	 * @return Returns an array with latest file size ('size' key) and appended lines ('data' key).
	 */
	public function getNewLines($lastFetchedSize) {

		/**
		 * Clear the stat cache to get the latest results
		 */
		clearstatcache();
		/**
		 * Define how much we should load from the log file 
		 * @var 
		 */
		$fsize = filesize($this->log);
		$maxLength = ($fsize - $lastFetchedSize);
		/**
		 * Verify that we don't load more data then allowed.
		 */
		if($maxLength > $this->maxSizeToLoad) {
			return json_encode(array("size" => $fsize, "data" => array("ERROR: PHPTail attempted to load more (".round(($maxLength / 1048576), 2)."MB) then the maximum size (".round(($this->maxSizeToLoad / 1048576), 2)."MB) of bytes into memory. You should lower the defaultUpdateTime to prevent this from happening. ")));	
		}
		/**
		 * Actually load the data
		 */
		$data = array();
		if($maxLength > 0) {
			
			$fp = fopen($this->log, 'r');
			fseek($fp, -$maxLength , SEEK_END); 
			$data = explode("\n", fread($fp, $maxLength));
			
		}
		
		/**
		 * If the last entry in the array is an empty string lets remove it.
		 */
		if(end($data) == "") {
			array_pop($data);
		}
		return array('size' => $fsize, 'data' => $data);	
	}
}

class UpsmonActionsScheduler {

	public function __construct($eventLogPath) {
		$tail = new PHPTail($eventLogPath);
		$lastSize = filesize($eventLogPath);

		while (true) {
			$result = $tail->getNewLines($lastSize);
			$lastSize = $result['size'];
			$this->processEventLogRows($result['data']);
			usleep(500000); //500 ms
		}

	}
	
	public function processEventLogRows($rows) {
		//10.06.2015 08:39:04                     Stop UpsAgent.
		//10.06.2015 08:39:08                     Start UpsAgent.
		//10.06.2015 08:39:10 UPS 01           00 Communication is lost. [N]
		//10.06.2015 08:39:12 UPS 01           01 Communication is established.

		foreach ($rows as $row) {
			//echo "$row\n";
			$event_code_description = substr($row, 37);
			//$parti = explode(" ", $codice_descrizione_evento);
			if (strlen($event_code_description) > 5) {
				$event_code = trim(substr($event_code_description,0,2));
				$event_description = trim(substr($event_code_description,3));
				
				// Removing [X] at the end of event description (if exists)
				$bracket_pos = strrpos($event_description, "[");
				if ($bracket_pos) {
					$event_description = trim(substr($event_description,0,$bracket_pos));
				}
				
				if (strlen($event_code) > 0) {
					//echo "[" . $event_code . "] ";
					//echo "[" . $event_description . "]";
					$task_name = "UPSMON_" . $event_description;
		
					// Start Scheduled Task named UPSMON_<event_description>
					$command_line = "schtasks /Run /TN " . escapeshellarg($task_name);
					echo "start task: $command_line\n";
					exec($command_line, $cmd_outputs, $exit_code);
					//echo "start task exit code: $exit_code"; //exit code
					//echo "start task output: " . print_r($cmd_outputs, true) . "\n"; //output
				}
				
			}		
		}
	
	}
}

new UpsmonActionsScheduler("C:/ProgramData/Upsmon/event.log");

The script checks appended lines to the file C:\ProgramData\Upsmon\event.log. If is appended an event line the script starts the scheduled task with name UPSMON_<event_description>.

For example:

10.06.2015 08:39:04                     Stop UpsAgent.
10.06.2015 08:39:08                     Start UpsAgent.
10.06.2015 08:39:10 UPS 01           00 Communication is lost. [N]
10.06.2015 08:39:12 UPS 01           01 Communication is established.

These tasks will run
UPSMON_Communication is lost.
UPSMON_Communication is established.

event lines are different from others having the 2 digit event code (00, 01, ...) before the description.
Pay attention that the leading [X] characters are removed from event description, so if the description is for example "Communication is lost. [N]" the task started will be ""Communication is lost.".

This script is useful if Upsmon is unable to start itself any executable.