public function __construct(TESTReader &$reader, OPTIONS &$opts, &$items, INTERVAL &$ivl, $resample)
{
$period = $opts->Get('period');
$this->multiplier = $reader->GetFractionalMultiplier($period);
$this->period = $this->multiplier * $period;
$this->resample = $this->multiplier * $resample;
$from = $this->multiplier * $ivl->GetWindowStart();
$ifrom = ceil($from);
$rem = $ifrom % $this->period;
if ($rem) {
$this->from = $ifrom + ($this->period - $rem);
} else {
$this->from = $ifrom;
}
$this->to = $this->multiplier * $ivl->GetWindowEnd();
$limit = $ivl->GetItemLimit();
if ($limit) {
if ($limit > 0) {
$to = $this->from + $this->period * $limit;
if ($to < $this->to) {
$this->to = $to;
}
} else {
$from = $this->to + $this->period * $limit;
if ($from > $this->from) {
$this->from = $from;
}
}
}
$this->items =& $items;
$limit = $opts->GetDateLimit(TESTData::DEFAULT_START, time());
$this->start = $limit[0];
}
protected function ExportData(DATAHandler $h = NULL, LOGGROUP $grp, MASK $mask, INTERVAL $ivl = NULL, $resample = 0, array &$names, $opts = 0, $dmcb = NULL)
{
global $DEFAULT_MISSING_VALUE;
$dm = new DOWNLOADMANAGER();
if (!$h) {
$h = new CSVHandler();
}
$filter = $this->CreateDataFilter($grp, $mask, $resample, $ivl->GetItemLimit());
if (!$h->nullwriter) {
$filter->AddFilter(new NULLCorrector($this->GetGroupOption($grp, "null_value", $DEFAULT_MISSING_VALUE)));
}
$data = $this->GetFilteredData($grp, $ivl->GetWindowStart(), $ivl->GetWindowEnd(), $filter);
$columns = sizeof($names);
$h->Start($columns);
$h->DataHeaders($names);
if ($dmcb != NULL) {
$action = "start";
$current_time = $ivl->GetWindowStart();
$onepercent = ($ivl->GetWindowEnd() - $ivl->GetWindowStart()) / 100;
$download = call_user_func_array($dmcb, array($action, ""));
}
foreach ($data as $time => $row) {
$h->DataVector($time, $row);
if ($dmcb != NULL) {
$action = "progress";
$thisupdate = time();
$updateinterval = $thisupdate - $lastupdate;
if ($time >= $current_time + $onepercent && $updateinterval >= 2) {
$current_time = $time;
$lastupdate = time();
$prog = round(($time - $ivl->GetWindowStart()) / $onepercent, 0);
if (!call_user_func_array($dmcb, array($action, $prog, $download))) {
$action = "finish";
call_user_func_array($dmcb, array($action, "cancelled"));
unset($dmcb);
break;
}
}
}
}
if ($dmcb != NULL) {
$action = "finish";
call_user_func_array($dmcb, array($action, "", $download));
}
$h->End();
}
public function __construct(RRDReader &$reader, OPTIONS &$opts, &$items, INTERVAL &$ivl, $resample)
{
parent::__construct($props);
$data_start = $opts->Get('data_start');
$data_start = date("F j, Y", $data_start);
$this->period = $opts->Get('step');
$this->file = $reader->rrd_folder . "/" . $reader->rrd_prefix . $opts->Get('file') . ".rrd";
$this->info = $reader::GetRRDInfo($opts->Get('file'), $reader);
//get information on the rrd and its archives
$this->resample = $resample;
$from = $ivl->GetWindowStart();
$ifrom = ceil($from);
//get start point as integer
$rem = $ifrom % $this->period;
//checks whether start point as integer is a multiple of period
if ($rem) {
$this->from = $ifrom + ($this->period - $rem);
} else {
$this->from = $ifrom;
}
//if yes, from is ifrom
$this->pos = $this->from;
$this->to = $ivl->GetWindowEnd();
$limit = $ivl->GetItemLimit();
//get interval's item limit, if any (defines how many datapoints to show and adjusts to or from based on that?)
if ($limit) {
if ($limit > 0) {
$to = $this->from + $this->period * $limit;
if ($to < $this->to) {
$this->to = $to;
}
} else {
$from = $this->to + $this->period * $limit;
if ($from > $this->from) {
$this->from = $from;
}
}
}
$this->items =& $items;
//items to show (rra:s in this case)
//this sets the caching starting point based on the longest rra:s datapoints
$limit = $opts->GetDateLimit($data_start, time());
//$limit = $opts->GetDateLimit($this::DEFAULT_START, time());//gets the window limits (as in, the first and last possible timestamp values)
$this->start = $limit[0];
}
