A connection to the Cloud Pub/Sub service to receive events.
This interface defines pure-virtual functions for each of the user-facing overload sets in Subscriber. That is, all of Subscriber's overloads will forward to the one pure-virtual function declared in this interface. This allows users to inject custom behavior (e.g., with a Google Mock object) in a Subscriber object for use in their own tests.
To create a concrete instance that connects you to the real Cloud Pub/Sub service, see MakeSubscriberConnection().
The *Params nested classes
Applications may define classes derived from SubscriberConnection, for example, because they want to mock the class. To avoid breaking all such derived classes when we change the number or type of the arguments to the member functions we define lightweight structures to pass the arguments.
Functions
virtual Subscribe(SubscribeParams)
Defines the interface for Subscriber::Subscribe(ApplicationCallback)
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-14 UTC."],[[["\u003cp\u003eThis page details the \u003ccode\u003eSubscriberConnection\u003c/code\u003e class within the Google Cloud Pub/Sub C++ library, focusing on version 2.31.0 and offering links to various other versions of the documentation.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eSubscriberConnection\u003c/code\u003e class provides a pure-virtual interface for connecting to the Cloud Pub/Sub service to receive events and is designed to allow custom behavior injection.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eSubscriberConnection\u003c/code\u003e contains virtual functions such as \u003ccode\u003eSubscribe\u003c/code\u003e, \u003ccode\u003eExactlyOnceSubscribe\u003c/code\u003e, \u003ccode\u003ePull\u003c/code\u003e, and \u003ccode\u003eoptions\u003c/code\u003e which define how to interact with the Pub/Sub service, including subscribing to messages and retrieving configuration parameters.\u003c/p\u003e\n"],["\u003cp\u003eTo connect to the real Cloud Pub/Sub service, you will need to use \u003ccode\u003eMakeSubscriberConnection()\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThe class provides lightweight structures to pass arguments in order to avoid breaking any derived classes.\u003c/p\u003e\n"]]],[],null,[]]
