searchStream pagination after support for page size was removed

[sanpaku72]

Your client library and Google Ads API versions:

• Client library version: v25.0.0

• Google Ads API version: V18

Your environment:

• The PHP version: 8.1.17

Description of the bug:
searchStream followed by iterateAllElements produces a memory error "Allowed memory size of xxx bytes exhausted" if the result is large, because of lacking pagination.

Steps to reproduce:

    $stream = $this->googleAdsClient->getGoogleAdsServiceClient()->searchStream(
		SearchGoogleAdsStreamRequest::build(env('GOOGLE_CUSTOMER_ID'),
		"SELECT campaign.resource_name, campaign.name, campaign.status "
			. "FROM campaign ")
	);
    foreach ($stream->iterateAllElements() as $row) {

Expected behavior:
No memory error, or some mechanism to paginate results.

Request/Response Logs:

This is also mentioned in https://groups.google.com/g/adwords-api/c/kBZ9CBk9AWQ/m/wLU2Gq6uAAAJ?utm_medium=email&utm_source=footer
Using next_page_token wil not help in this case, as you want less results per time not more results over time.

[fiboknacky]

Could you share your customer ID and login-customer-id with us via googleadsapi-support@google.com? Ensure to mention this GitHub issue so the agent there can pass the information to me to take a closer look. Thanks.

In the meantime, could you please share what gRPC and protobuf versions are you using?