luos/workflow/engine/methods/setup/cronAjax.php

<?php
function mktimeDate($date)
{
    $arrayAux = getdate(strtotime($date));

    $mktDate = mktime(
        $arrayAux["hours"],
        $arrayAux["minutes"],
        $arrayAux["seconds"],
        $arrayAux["mon"],
        $arrayAux["mday"],
        $arrayAux["year"]
    );

    return $mktDate;
}

function cronArraySet($str, $filter)
{
    $arrayAux = explode("|", $str);

    $date        = "";
    $workspace   = "";
    $action      = "";
    $status      = "";
    $description = trim($arrayAux[0]);

    if (count($arrayAux) > 1) {
        $date        = (isset($arrayAux[0]))? trim($arrayAux[0]) : "";
        $workspace   = (isset($arrayAux[1]))? trim($arrayAux[1]) : "";
        $action      = (isset($arrayAux[2]))? trim($arrayAux[2]) : "";
        $status      = (isset($arrayAux[3]))? trim($arrayAux[3]) : "";
        $description = (isset($arrayAux[4]))? trim($arrayAux[4]) : "";
    }

    $mktDate = (!empty($date))? mktimeDate($date) : 0;

    //Filter
    $sw = 1;

    if ($filter["workspace"] != "ALL" && $workspace != $filter["workspace"]) {
        $sw = 0;
    }

    if ($filter["status"] != "ALL") {
        switch ($filter["status"]) {
            case "COMPLETED":
                if ($status != "action") {
                    $sw = 0;
                }
                break;
            case "FAILED":
                if ($status == "action") {
                    $sw = 0;
                }
                break;
        }
    }

    if (!empty($filter["dateFrom"]) && $mktDate > 0) {
        if (!(mktimeDate($filter["dateFrom"]) <= $mktDate)) {
            $sw = 0;
        }
    }

    if (!empty($filter["dateTo"]) && $mktDate > 0) {
        if (!($mktDate <= mktimeDate($filter["dateTo"] . " 23:59:59"))) {
            $sw = 0;
        }
    }

    $arrayData = array();

    if ($sw == 1) {
        $arrayData = array(
            "DATE"        => $date,
            "WORKSPACE"   => $workspace,
            "ACTION"      => $action,
            "STATUS"      => $status,
            "DESCRIPTION" => $description
        );
    }

    return $arrayData;
}

function cronDataGet($filter, $r, $i)
{
    $r = $r + 1; //+ 1, to determine the next page
    $i = $i + 1;

    $arrayData = array();
    $strAux = null;
    $numRec = 0;
    $cont = 0;

    $file = PATH_DATA . "log" . PATH_SEP . "cron.log";

    if (file_exists($file)) {
        $fh = fopen($file, "r");

        for($pos = 0; fseek($fh, $pos, SEEK_END) !== -1; $pos--) {
            $char = fgetc($fh);

            if ($char == "\n") {
                $strAux = trim($strAux);

                if (!empty($strAux)) {
                    $arrayAux = cronArraySet($strAux, $filter);

                    if (count($arrayAux) > 0) {
                        $cont = $cont + 1;

                        if ($cont >= $i && count($arrayData) + 1 <= $r) {
                            $arrayData[] = $arrayAux;
                            $numRec = $cont;
                        }
                    }
                }

                if (count($arrayData) == $r) {
                    break;
                }

                $strAux = null;
                $char = null;
            }

            $strAux = $char . $strAux;
        }

        $strAux = trim($strAux);

        if (!empty($strAux)) {
            $arrayAux = cronArraySet($strAux, $filter);

            if (count($arrayAux) > 0) {
                $cont = $cont + 1;

                if ($cont >= $i && count($arrayData) + 1 <= $r) {
                    $arrayData[] = $arrayAux;
                    $numRec = $cont;
                }
            }
        }

        fclose($fh);
    }

    //Delete element
    $r = $r - 1;

    if (count($arrayData) > $r) {
        $arrayAux = array_pop($arrayData);
    }

    return array($numRec, $arrayData);
}





$option = (isset($_REQUEST["option"]))? $_REQUEST["option"] : null;

$response = array();

switch ($option) {
    case "LST":
        $pageSize  = $_REQUEST["pageSize"];
        $workspace = $_REQUEST["workspace"];
        $status    = $_REQUEST["status"];
        $dateFrom  = $_REQUEST["dateFrom"];
        $dateTo    = $_REQUEST["dateTo"];

        $arrayFilter = array(
            "workspace" => $workspace,
            "status"    => $status,
            "dateFrom"  => str_replace("T00:00:00", null, $dateFrom),
            "dateTo"    => str_replace("T00:00:00", null, $dateTo)
        );

        $limit = isset($_REQUEST["limit"])? $_REQUEST["limit"] : $pageSize;
        $start = isset($_REQUEST["start"])? $_REQUEST["start"] : 0;

        list($numRec, $data) = cronDataGet($arrayFilter, $limit, $start);

        $response = array("success" => true, "resultTotal" => $numRec, "resultRoot" => $data);
        break;

    case "EMPTY":
        $status = 1;

        try {
            $file = PATH_DATA . "log" . PATH_SEP . "cron.log";

            if (file_exists($file)) {
                //file_put_contents($file, null);
                unlink($file);
            }

            $response["status"] = "OK";
        } catch (Exception $e) {
            $response["message"] = $e->getMessage();
            $status = 0;
        }

        if ($status == 0) {
            $response["status"] = "ERROR";
        }
        break;
}

echo G::json_encode($response);