class RRD
{undefined
//rrdtool 执行权限
private $rrdBinPath = '/usr/bin/rrdtool';
//rrd文件地址
private $rrdFile;
//默认开始时间从2000年的1月1号
private $rrdStart = 946656000;
//默认时间间隔是300秒(5分钟)
private $rrdStep = 300;
private $rrdDsname = array('dsname');
//rrdtool生成的图片地址
private $graphFile;
private $graphWidth = 800;
private $graphHeight = 400;
private $graphLineColor = array('#473C8B', '#66CDAA',
'#A0522D', '#EE3A8C','#CD0000');
public function __construct($rrdFile, $graphFile,
$rrdBinPath='')
{undefined
$this->rrdFile = $rrdFile;
$this->graphFile = $graphFile;
if($rrdBinPath)
{undefined
$this->rrdBinPath = $rrdBinPath;
}
}
public function rrdCreate($rrdStart=0, $rrdStep=0,
$rrdDsname=array(), $debug=0)
{undefined
if($rrdStart > 0)
{undefined
$this->rrdStart = $rrdStart;
}
if($rrdStep > 0)
{undefined
$this->rrdStep = $rrdStep;
}
if(count($rrdDsname) > 0)
{undefined
$this->rrdDsname = $rrdDsname;
}
$dsCommand = '';
foreach ($this->rrdDsname as $dsname)
{undefined
$dsCommand .= "DS:{$dsname}:GAUGE:600:0:U ";
}
$command = "{$this->rrdBinPath} create {$this->rrdFile}
--start {$this->rrdStart} --step {$this->rrdStep}
{$dsCommand} RRA:AVERAGE:0.5:1:600 RRA:AVERAGE:0.5:4:600
RRA:AVERAGE:0.5:24:600 RRA:AVERAGE:0.5:288:730";
return $this->execCommand($command, $debug);
}
public function rrdUpdate($timestamp, $data=array(),
$debug=0)
{undefined
if($data && $timestamp > 0)
{undefined
$dsCommand = "";
$valueCommand = "";
foreach($data as $dsname=>$value)
{undefined
if(is_int($dsname))
{undefined
$dsname = $this->rrdDsname[$dsname];
}
$dsCommand .= $dsname.":";
$valueCommand .= $value.":";
}
$dsCommand = substr($dsCommand, 0, -1);
$valueCommand = substr($valueCommand, 0, -1);
$command = "{$this->rrdBinPath} update {$this->rrdFile}
-t {$dsCommand} {$timestamp}:{$valueCommand}";
return $this->execCommand($command, $debug);
}
else
{undefined
return 'ERROR_01';
}
}
public function rrdGraph($s, $e, $rrdDsname=array(), $option =
array(), $debug=0)
{undefined
if(isset($option['with']) && intval($option['with'])
> 0)
{undefined
$this->graphWidth = $option['with'];
}
if(isset($option['height']) &&
intval($option['height']) > 0)
{undefined
$this->graphHeight = $option['height'];
}
if(!$rrdDsname)
{undefined
$rrdDsname = $this->rrdDsname;
}
$defCommand = '';
$lineCommand = '';
foreach ($rrdDsname as $dsname)
{undefined
if(strpos($dsname, ':') !== false)
{undefined
$tempArr = explode(':', $dsname);
$tempDsname = $tempArr[0];
$tempLineColor = $tempArr[1];
$defCommand .=
"DEF:my{$tempDsname}='{$this->rrdFile}':{$tempDsname}:AVERAGE
VDEF:myaverage=my{$tempDsname},AVERAGE
VDEF:mymax=my{$tempDsname},MAXIMUM ";
$lineCommand .=
"LINE:my{$tempDsname}".$tempLineColor.":'".$tempDsname."'
".'GPRINT:myaverage'.$tempDsname.':"AVERAGE\:%6.0lf"
GPRINT:mymax'.$tempDsname.':"MAXIMUM\:%6.0lf\n" ';
}
else
{undefined
$defCommand .=
"DEF:my{$dsname}='{$this->rrdFile}':{$dsname}:AVERAGE
VDEF:myaverage{$dsname}=my{$dsname},AVERAGE
VDEF:mymax{$dsname}=my{$dsname},MAXIMUM ";
$lineCommand .=
"LINE:my{$dsname}".array_pop($this->graphLineColor).":'".$dsname."'
".'GPRINT:myaverage'.$dsname.':"AVERAGE\:%6.0lf"
GPRINT:mymax'.$dsname.':"MAXIMUM\:%6.0lf\n" ';
}
}
$command = "{$this->rrdBinPath} graph {$this->graphFile}
--start {$s} --end {$e} {$defCommand} {$lineCommand} -w
{$this->graphWidth} -h {$this->graphHeight}";
return $this->execCommand($command, $debug);
}
private function execCommand($command, $debug)
{undefined
if($debug !== 0)
{undefined
echo $command;
}
system($command, $result);
if($result === 0)
{undefined
return true;
}
else
{undefined
return 'ERROR_02';
}
}
}
