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<?php |
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namespace Krenor\Prometheus; |
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use InvalidArgumentException; |
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use Krenor\Prometheus\Metrics\Gauge; |
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use Krenor\Prometheus\Metrics\Counter; |
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use Krenor\Prometheus\Metrics\Summary; |
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use Krenor\Prometheus\Contracts\Metric; |
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use Krenor\Prometheus\Metrics\Histogram; |
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use Tightenco\Collect\Support\Collection; |
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class CollectorRegistry |
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{ |
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protected Collection $counters; |
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protected Collection $gauges; |
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protected Collection $histograms; |
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protected Collection $summaries; |
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/** |
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* CollectorRegistry constructor. |
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*/ |
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public function __construct() |
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{ |
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$this->counters = new Collection; |
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$this->gauges = new Collection; |
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$this->histograms = new Collection; |
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$this->summaries = new Collection; |
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} |
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/** |
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* @return Collection|MetricFamilySamples[] |
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*/ |
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public function collect(): Collection |
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{ |
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return $this |
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->collectible() |
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->collapse() |
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->map(fn(Metric $metric) => new MetricFamilySamples($metric, $metric::storage()->collect($metric))); |
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} |
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/** |
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* @param Metric $metric |
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* |
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* @return Metric |
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*/ |
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/** |
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* @template T |
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* @psalm-param T $metric |
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* |
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* @return T |
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*/ |
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public function register(Metric $metric): Metric |
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{ |
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$collector = $this->collector($metric); |
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$namespace = $metric::class; |
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if (!$collector->contains($namespace)) { |
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$collector->put($namespace, $metric); |
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} |
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return $collector->get($namespace); |
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} |
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/** |
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* @param Metric $metric |
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* |
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* @return self |
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*/ |
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public function unregister(Metric $metric): self |
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{ |
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$this->collector($metric) |
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->forget($metric::class); |
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return $this; |
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} |
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/** |
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* @return Collection |
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*/ |
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public function counters(): Collection |
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{ |
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return $this->counters; |
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} |
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/** |
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* @return Collection |
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*/ |
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public function gauges(): Collection |
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{ |
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return $this->gauges; |
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} |
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/** |
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* @return Collection |
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*/ |
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public function histograms(): Collection |
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{ |
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return $this->histograms; |
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} |
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/** |
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* @return Collection |
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*/ |
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public function summaries(): Collection |
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{ |
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return $this->summaries; |
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} |
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/** |
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* @param string $namespace |
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* |
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* @return Counter|null |
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*/ |
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public function counter(string $namespace): ?Counter |
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{ |
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return $this->counters->get($namespace); |
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} |
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/** |
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* @param string $namespace |
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* |
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* @return Gauge|null |
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*/ |
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public function gauge(string $namespace): ?Gauge |
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{ |
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return $this->gauges->get($namespace); |
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} |
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/** |
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* @param string $namespace |
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* |
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* @return Histogram|null |
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*/ |
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public function histogram(string $namespace): ?Histogram |
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{ |
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return $this->histograms->get($namespace); |
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} |
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/** |
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* @param string $namespace |
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* |
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* @return Summary|null |
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*/ |
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public function summary(string $namespace): ?Summary |
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{ |
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return $this->summaries->get($namespace); |
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} |
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/** |
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* @param Metric $metric |
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* |
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* @return Collection |
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*/ |
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protected function collector(Metric $metric): Collection |
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{ |
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switch ($metric) { |
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case $metric instanceof Counter: |
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return $this->counters; |
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case $metric instanceof Gauge: |
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return $this->gauges; |
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case $metric instanceof Histogram: |
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return $this->histograms; |
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case $metric instanceof Summary: |
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return $this->summaries; |
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default: |
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throw new InvalidArgumentException("Could not determine collector of unknown metric type."); |
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} |
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} |
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/** |
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* @return Collection|Collection[] |
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*/ |
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protected function collectible(): Collection |
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{ |
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return new Collection([ |
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$this->counters, |
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$this->gauges, |
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$this->histograms, |
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$this->summaries, |
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]); |
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} |
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} |
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krenor /
prometheus-client
