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<?php |
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namespace Cerbero\LazyJsonPages\Concerns; |
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use Cerbero\LazyJsonPages\Exceptions\OutOfAttemptsException; |
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use Cerbero\LazyJsonPages\Outcome; |
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use Throwable; |
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/** |
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* The trait to retry HTTP requests when they fail. |
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* |
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*/ |
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trait RetriesHttpRequests |
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{ |
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/** |
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* Retry to return the result of HTTP requests |
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* |
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* @param callable $callback |
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* @return mixed |
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*/ |
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protected function retry(callable $callback) |
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{ |
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$attempt = 0; |
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$outcome = new Outcome(); |
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$remainingAttempts = $this->config->attempts; |
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do { |
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$attempt++; |
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$remainingAttempts--; |
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try { |
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return $callback($outcome); |
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} catch (Throwable $e) { |
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if ($remainingAttempts > 0) { |
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$this->backoff($attempt); |
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} else { |
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throw new OutOfAttemptsException($e, $outcome); |
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} |
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} |
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} while ($remainingAttempts > 0); |
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} |
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/** |
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* Execute the backoff strategy |
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* |
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* @param int $attempt |
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* @return void |
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*/ |
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protected function backoff(int $attempt): void |
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{ |
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$backoff = $this->config->backoff ?: function (int $attempt) { |
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return ($attempt - 1) ** 2 * 1000; |
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}; |
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usleep($backoff($attempt) * 1000); |
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} |
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/** |
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* Retry to yield the result of HTTP requests |
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* |
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* @param callable $callback |
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* @return mixed |
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*/ |
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protected function retryYielding(callable $callback) |
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{ |
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$attempt = 0; |
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$outcome = new Outcome(); |
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$remainingAttempts = $this->config->attempts; |
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do { |
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$failed = false; |
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$attempt++; |
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$remainingAttempts--; |
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try { |
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yield from $callback($outcome); |
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} catch (Throwable $e) { |
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$failed = true; |
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if ($remainingAttempts > 0) { |
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$this->backoff($attempt); |
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} else { |
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throw new OutOfAttemptsException($e, $outcome); |
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} |
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} |
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} while ($failed && $remainingAttempts > 0); |
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} |
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} |
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cerbero90 /
lazy-json-pages
