/**
* Flushes the batch by combining all the queued put and delete requests
* into BatchWriteItem commands and executing them. Unprocessed items are
* automatically re-queued.
*
* @param bool $untilEmpty If true, flushing will continue until the queue
* is completely empty. This will make sure that
* unprocessed items are all eventually sent.
*
* @return $this
*/
public function flush($untilEmpty = true)
{
// Send BatchWriteItem requests until the queue is empty
$keepFlushing = true;
while ($this->queue && $keepFlushing) {
$commands = $this->prepareCommands();
$pool = new CommandPool($this->client, $commands, ['before' => $this->config['before'], 'concurrency' => $this->config['pool_size'], 'fulfilled' => function (ResultInterface $result) {
// Re-queue any unprocessed items
if ($result->hasKey('UnprocessedItems')) {
$this->retryUnprocessed($result['UnprocessedItems']);
}
}, 'rejected' => function ($reason) {
if ($reason instanceof AwsException) {
$code = $reason->getAwsErrorCode();
if ($code === 'ProvisionedThroughputExceededException') {
$this->retryUnprocessed($reason->getCommand()['RequestItems']);
} elseif (is_callable($this->config['error'])) {
$this->config['error']($reason);
}
}
}]);
$pool->promise()->wait();
$keepFlushing = (bool) $untilEmpty;
}
return $this;
}
/**
* Upload the source asynchronously using multipart upload operations.
*
* @return PromiseInterface
*/
public function promise()
{
if ($this->promise) {
return $this->promise;
}
return $this->promise = Promise\coroutine(function () {
// Initiate the upload.
if ($this->state->isCompleted()) {
throw new \LogicException('This multipart upload has already ' . 'been completed or aborted.');
} elseif (!$this->state->isInitiated()) {
$result = (yield $this->execCommand('initiate', $this->getInitiateParams()));
$this->state->setUploadId($this->info['id']['upload_id'], $result[$this->info['id']['upload_id']]);
$this->state->setStatus(UploadState::INITIATED);
}
// Create a command pool from a generator that yields UploadPart
// commands for each upload part.
$resultHandler = $this->getResultHandler($errors);
$commands = new CommandPool($this->client, $this->getUploadCommands($resultHandler), ['concurrency' => $this->config['concurrency'], 'before' => $this->config['before_upload']]);
// Execute the pool of commands concurrently, and process errors.
(yield $commands->promise());
if ($errors) {
throw new MultipartUploadException($this->state, $errors);
}
// Complete the multipart upload.
(yield $this->execCommand('complete', $this->getCompleteParams()));
$this->state->setStatus(UploadState::COMPLETED);
})->otherwise(function (\Exception $e) {
// Throw errors from the operations as a specific Multipart error.
if ($e instanceof AwsException) {
$e = new MultipartUploadException($this->state, $e);
}
throw $e;
});
}