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<?php |
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/** |
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* User: alec |
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* Date: 03.11.18 |
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* Time: 10:26 |
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*/ |
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declare(strict_types=1); |
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namespace AlecRabbit\Event; |
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class EventCounter |
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{ |
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protected const DEFAULT_NAME = 'default'; |
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protected const DEFAULT_LENGTH = 3600; |
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protected const DEFAULT_GROUP_BY = 60; |
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/** @var array */ |
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protected $events = []; |
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/** @var int */ |
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protected $length; |
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/** @var string */ |
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protected $name; |
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/** @var int|null */ |
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protected $groupBy; |
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/** @var int */ |
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protected $lastTimestamp; |
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/** @var bool */ |
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private $relativeMode; |
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/** |
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* EventCounter constructor. |
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* @param int|null $length Time length in seconds e.g. 3600 => 1 hour |
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* @param int|null $groupBy Group by period of time in seconds e.g. 60 => 1 min |
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* @param bool|null $relativeMode |
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*/ |
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public function __construct(?int $length = null, ?int $groupBy = null, ?bool $relativeMode = null) |
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{ |
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$this->name = static::DEFAULT_NAME; |
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$this->length = $length ?? static::DEFAULT_LENGTH; |
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$this->groupBy = $groupBy; |
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$this->relativeMode = $relativeMode ?? false; |
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$this->lastTimestamp = 0; |
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} |
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/** |
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* @param int|null $time |
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*/ |
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public function addEvent(?int $time = null): void |
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{ |
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$this->lastTimestamp = $time = $time ?? time(); |
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if (null !== $this->groupBy) { |
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$time = base_timestamp($time, $this->groupBy); |
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} |
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// Is there any event during [$time] period? If not initialize with 0 |
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$this->events[$time] = $this->events[$time] ?? 0; |
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$this->events[$time]++; |
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$this->trim(); |
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} |
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private function trim(): void |
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{ |
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$time = $this->relativeMode ? $this->lastTimestamp : time(); |
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$threshold = $time - $this->length; |
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if (null !== ($key = array_key_first($this->events)) && ($key <= $threshold)) { |
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unset($this->events[$key]); |
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} |
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} |
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/** |
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* @param bool|null $reset |
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* @return int |
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*/ |
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public function getCalculatedEvents(?bool $reset = null): int |
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{ |
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$r = 0; |
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if (0 < ($sum = (int)array_sum($this->events))) { |
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$r = $sum; |
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} |
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if ($reset) { |
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$this->events = []; |
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} |
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return $r; |
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} |
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/** |
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* @return string |
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*/ |
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public function getName(): string |
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{ |
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return $this->name; |
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} |
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/** |
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* @param string $name |
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* @return EventCounter |
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*/ |
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public function setName(string $name): EventCounter |
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{ |
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$this->name = $name; |
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return $this; |
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} |
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/** |
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* Set to this mode to count events by timestamps. |
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* |
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* @param bool $relative |
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* @return EventCounter |
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*/ |
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public function setRelativeMode(bool $relative = true): EventCounter |
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{ |
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$this->relativeMode = $relative; |
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return $this; |
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} |
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/** |
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* @return array |
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*/ |
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3 |
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public function getEvents(): array |
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{ |
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3 |
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return $this->events; |
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} |
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} |
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alecrabbit /
twrb-php-components
