54 lines
1.9 KiB
PHP
54 lines
1.9 KiB
PHP
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<?php
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namespace App\Serp\Operations;
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use App\Serp\Exceptions\ProviderAuthenticationException;
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use App\Serp\Exceptions\ProviderConfigurationException;
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use App\Serp\Exceptions\SerpProviderException;
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use Illuminate\Support\Facades\Cache;
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final class CircuitBreaker
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{
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public function __construct(private KillSwitch $kill, private OperationAuditLogger $audit) {}
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public function assertClosed(): void
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{
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try {
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if (Cache::get('serp:circuit:open')) {
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throw new OperationBlockedException('circuit_open');
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}
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} catch (OperationBlockedException $e) {
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throw $e;
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} catch (\Throwable) {
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throw new OperationBlockedException('circuit_cache_unavailable');
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}
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}
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public function success(): void
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{
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Cache::forget('serp:circuit:failures');
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Cache::forget('serp:circuit:open');
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}
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public function failure(SerpProviderException $e): void
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{
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if ($e instanceof ProviderAuthenticationException || $e instanceof ProviderConfigurationException) {
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Cache::put('serp:circuit:open', true, now()->addMinutes((int) config('serp.circuit_cooldown_minutes')));
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$this->kill->activate('provider_auth_configuration');
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$this->audit->record('circuit_opened', ['error_category' => $e->safeCode()]);
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return;
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}$n = (int) Cache::increment('serp:circuit:failures');
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Cache::put('serp:circuit:failures', $n, now()->addMinutes((int) config('serp.circuit_window_minutes')));
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if ($n >= (int) config('serp.circuit_failure_threshold')) {
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Cache::put('serp:circuit:open', true, now()->addMinutes((int) config('serp.circuit_cooldown_minutes')));
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$this->audit->record('circuit_opened', ['error_category' => $e->safeCode()]);
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}
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}
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public function open(): bool
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{
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return (bool) Cache::get('serp:circuit:open');
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}
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}
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