91 lines
2.8 KiB
PHP
91 lines
2.8 KiB
PHP
<?php
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namespace GuzzleHttp\Promise;
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final class Each
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{
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/**
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* Given an iterator that yields promises or values, returns a promise that
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* is fulfilled with a null value when the iterator has been consumed or
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* the aggregate promise has been fulfilled or rejected.
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*
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* $onFulfilled is a function that accepts the fulfilled value, iterator
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* index, and the aggregate promise. The callback can invoke any necessary
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* side effects and choose to resolve or reject the aggregate if needed.
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*
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* $onRejected is a function that accepts the rejection reason, iterator
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* index, and the aggregate promise. The callback can invoke any necessary
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* side effects and choose to resolve or reject the aggregate if needed.
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*
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* @param mixed $iterable Iterator or array to iterate over.
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* @param callable $onFulfilled
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* @param callable $onRejected
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*
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* @return PromiseInterface
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*/
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public static function of(
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$iterable,
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callable $onFulfilled = null,
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callable $onRejected = null
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) {
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return (new EachPromise($iterable, [
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'fulfilled' => $onFulfilled,
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'rejected' => $onRejected
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]))->promise();
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}
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/**
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* Like of, but only allows a certain number of outstanding promises at any
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* given time.
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*
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* $concurrency may be an integer or a function that accepts the number of
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* pending promises and returns a numeric concurrency limit value to allow
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* for dynamic a concurrency size.
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*
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* @param mixed $iterable
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* @param int|callable $concurrency
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* @param callable $onFulfilled
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* @param callable $onRejected
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*
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* @return PromiseInterface
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*/
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public static function ofLimit(
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$iterable,
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$concurrency,
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callable $onFulfilled = null,
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callable $onRejected = null
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) {
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return (new EachPromise($iterable, [
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'fulfilled' => $onFulfilled,
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'rejected' => $onRejected,
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'concurrency' => $concurrency
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]))->promise();
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}
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/**
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* Like limit, but ensures that no promise in the given $iterable argument
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* is rejected. If any promise is rejected, then the aggregate promise is
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* rejected with the encountered rejection.
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*
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* @param mixed $iterable
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* @param int|callable $concurrency
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* @param callable $onFulfilled
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*
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* @return PromiseInterface
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*/
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public static function ofLimitAll(
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$iterable,
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$concurrency,
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callable $onFulfilled = null
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) {
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return each_limit(
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$iterable,
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$concurrency,
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$onFulfilled,
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function ($reason, $idx, PromiseInterface $aggregate) {
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$aggregate->reject($reason);
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}
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);
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}
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}
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