str
Required. The subscription from which messages should be
pulled. Format is
projects/{project}/subscriptions/{sub}.
return_immediately
:noindex:
bool
Optional. If this field set to true, the system will respond
immediately even if it there are no messages available to
return in the Pull response. Otherwise, the system may
wait (for a bounded amount of time) until at least one
message is available, rather than returning no messages.
Warning: setting this field to true is discouraged
because it adversely impacts the performance of Pull
operations. We recommend that users do not set this field.
max_messages
:noindex:
int
Required. The maximum number of messages to
return for this request. Must be a positive
integer. The Pub/Sub system may return fewer
than the number specified.