I use google php library which works with gmail api. I want to get all messages from my gmail account.
That's how I do that:
do {
$this->client->setUseBatch(false);
$messagesResponse = $service->users_messages->listUsersMessages('me', compact('pageToken'));
if ($messagesResponse->getMessages()) {
$batch = new Google_Http_Batch($this->client);
$this->client->setUseBatch(true);
foreach ($messagesResponse as $item) {
$request = $service->users_messages->get('me', $item->id, ['format' => 'raw']);
$batch->add($request);
}
$messages = array_merge($messages, $batch->execute());
$pageToken = $messagesResponse->getNextPageToken();
}
} while ($pageToken);
When I run this script from CLI I got the following error:
[Google_IO_Exception]
Operation timed out after 100000 milliseconds with 57157107 bytes received
If I comment the line with retrieving new token then I got first 100 messages and it works. But I can't fetch all of them. PHP doesn't have timeout, this is google_io_exception, so I don't know how to solve the problem. Plus any optimization tips would be great, since the only thing I'm aware of is batch requests, but I use them.
This question is still relevant, and as it took me lot of time to have a clear answer I'll share what I've found:
You're limited to 100 calls in a single batch request. If you need to make more calls than that, use multiple batch requests.
https://developers.google.com/gmail/api/guides/
As you can see in, based on the documentation you cannot have more than 100 calls in a single batch request. You will have therefore to count and execute below this limit.
If you maintain this limit of 100 requests, all should be working fine.