/**
* Read one line from export response, if read success converts line to associative array according to export data
* format.
*
* @return array|null
*/
protected function read()
{
if (!$this->body) {
$response = $this->client->export($this->methodName, $this->parameters);
$this->body = $response->getBody();
$this->body->seek(0);
if ($this->useFirstLineAsHeader) {
$line = $this->getLineData();
if ($line) {
$this->header = $line;
}
}
}
return $this->getResponseItem();
}
/**
* Performs the work of reading the body stream, creating tree hashes, and creating UploadPartContext objects
*
* @param EntityBodyInterface $body The body to create parts from
*/
protected function generateUploadParts(EntityBodyInterface $body)
{
// Rewind the body stream
$body->seek(0);
// Initialize variables for tracking data for upload
$uploadContext = new UploadPartContext($this->partSize, $body->ftell());
// Read the data from the streamed body in 1MB chunks
$data = $this->readPart($body);
while (strlen($data) > 0) {
// Add data to the hashes and size calculations
$uploadContext->addData($data);
// If the upload part is complete, generate an upload object and reset the currently tracked upload data
if ($uploadContext->isFull()) {
$this->updateTotals($uploadContext->generatePart());
$uploadContext = new UploadPartContext($this->partSize, $body->ftell());
}
$data = $this->readPart($body);
}
// Handle any leftover data
if (!$uploadContext->isEmpty()) {
$this->updateTotals($uploadContext->generatePart());
}
// Rewind the body stream
$body->seek(0);
}
