/**
* Put Items and delete Keys by batch
* @param Context\BatchWrite $context
* @return null|Context\BatchWrite Return a new BatchWrite context if some request were not processed
* @throws Exception\AttributesException
*/
public function batchWrite(Context\BatchWrite $context)
{
if (null !== $this->logger) {
$this->log('BatchWrite');
}
if (0 === count($context)) {
$message = "BatchWrite context doesn't contain anything to write";
if (null !== $this->logger) {
$this->log($message, Logger::ERROR);
}
throw new Exception\AttributesException($message);
}
$parameters = $context->getForDynamoDB();
if (null !== $this->logger) {
$this->log('BatchWrite request paramaters : ' . print_r($parameters, true), Logger::DEBUG);
}
$response = $this->connector->batchWriteItem($parameters);
if (null !== $this->logger) {
$this->log('BatchWrite request response : ' . print_r($response, true), Logger::DEBUG);
}
// UnprocessedKeys
if (count((array) $response['UnprocessedItems'])) {
$newContext = new Context\BatchWrite();
foreach ($response['UnprocessedItems'] as $table => $tableParameters) {
foreach ($tableParameters as $request) {
if (isset($request['DeleteRequest'])) {
$keys = $request['DeleteRequest']['Key'];
$newContext->addKeyToDelete($table, current($keys['HashKeyElement']), isset($keys['RangeKeyElement']) ? current($keys['RangeKeyElement']) : null);
} elseif (isset($request['PutRequest'])) {
$item = new Item($table);
$item->populateFromDynamoDB($request['PutRequest']['Item']);
$newContext->addItemToPut($item);
}
}
}
if (null !== $this->logger) {
$this->log('More unprocessed Items');
}
} else {
$newContext = null;
}
// Write Unit
foreach ($response['Responses'] as $table => $responseItems) {
$this->addConsumedWriteUnits($table, floatval($responseItems['ConsumedCapacityUnits']));
}
return $newContext;
}
