Cachet/app/Models/Metric.php
2015-04-18 13:59:37 +01:00

127 lines
3.9 KiB
PHP

<?php
namespace CachetHQ\Cachet\Models;
use DateInterval;
use DateTime;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Support\Facades\Config;
use Illuminate\Support\Facades\DB;
use Watson\Validating\ValidatingTrait;
/**
* @property int $id
* @property string $name
* @property string $suffix
* @property string $description
* @property float $default_value
* @property int $calc_type
* @property int $display_chart
* @property \Carbon\Carbon $created_at
* @property \Carbon\Carbon $updated_at
*/
class Metric extends Model
{
use ValidatingTrait;
const CALC_SUM = 0;
const CALC_AVG = 1;
/**
* The model's attributes.
*
* @var string[]
*/
protected $attributes = [
'name' => '',
'display_chart' => 1,
'default_value' => 0,
'calc_type' => 0,
];
/**
* The validation rules.
*
* @var string[]
*/
protected $rules = [
'name' => 'required',
'suffix' => 'required',
'display_chart' => 'boolean',
'default_value' => 'numeric',
];
/**
* The fillable properties.
*
* @var string[]
*/
protected $fillable = ['name', 'suffix', 'description', 'display_chart', 'default_value', 'calc_type'];
/**
* Metrics contain many metric points.
*
* @return \Illuminate\Database\Eloquent\Relations\HasMany
*/
public function points()
{
return $this->hasMany('CachetHQ\Cachet\Models\MetricPoint', 'metric_id', 'id');
}
/**
* Returns the sum of all values a metric has.
*
* @param int $hour
*
* @return int
*/
public function getValues($hour)
{
$dateTime = new DateTime();
$dateTime->sub(new DateInterval('PT'.$hour.'H'));
if (Config::get('database.default') === 'mysql') {
if (! isset($this->calc_type) || $this->calc_type === self::CALC_SUM) {
$value = (int) $this->points()->whereRaw('DATE_FORMAT(created_at, "%Y%m%e%H") = '.$dateTime->format('YmdH'))->whereRaw('HOUR(created_at) = HOUR(DATE_SUB(NOW(), INTERVAL '.$hour.' HOUR))')->groupBy(DB::raw('HOUR(created_at)'))->sum('value');
} elseif ($this->calc_type === self::CALC_AVG) {
$value = (int) $this->points()->whereRaw('DATE_FORMAT(created_at, "%Y%m%e%H") = '.$dateTime->format('YmdH'))->whereRaw('HOUR(created_at) = HOUR(DATE_SUB(NOW(), INTERVAL '.$hour.' HOUR))')->groupBy(DB::raw('HOUR(created_at)'))->avg('value');
}
} else {
// Default metrics calculations.
if (! isset($this->calc_type) || $this->calc_type === self::CALC_SUM) {
$queryType = "sum(metric_points.value)";
} elseif ($this->calc_type === self::CALC_AVG) {
$queryType = "avg(metric_points.value)";
} else {
$queryType = "sum(metric_points.value)";
}
$query = DB::select("select {$queryType} as aggregate FROM metrics JOIN metric_points ON metric_points.metric_id = metrics.id WHERE metric_points.metric_id = {$this->id} AND to_char(metric_points.created_at, 'YYYYMMDDHH24') = :timestamp AND to_char(metric_points.created_at, 'H') = to_char(now() - interval '{$hour} hour', 'H') GROUP BY to_char(metric_points.created_at, 'H')", [
'timestamp' => $dateTime->format('YmdH'),
]);
if (isset($query[0])) {
$value = $query[0]->aggregate;
} else {
$value = 0;
}
}
if ($value === 0 && $this->default_value != $value) {
return $this->default_value;
}
return $value;
}
/**
* Determines whether a chart should be shown.
*
* @return bool
*/
public function getShouldDisplayAttribute()
{
return $this->display_chart === 1;
}
}