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"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-03-21 UTC."],[[["This document details the `SubscriberConnection` interface, which facilitates receiving events from the Cloud Pub/Sub service in C++."],["The latest release candidate is version 2.37.0-rc, and it includes a list of versions from 2.36.0 down to 2.11.0, with all versions being linked to their respective `SubscriberConnection` class documentation."],["`SubscriberConnection` provides pure-virtual functions mirroring `Subscriber` overloads, enabling custom behavior injection for testing purposes, and uses `MakeSubscriberConnection()` to create a connection to the real service."],["The `SubscriberConnection` interface includes functions such as `Subscribe`, `ExactlyOnceSubscribe`, `Pull`, and `options`, each described with its parameters, return types, and purpose."],["Applications can derive classes from `SubscriberConnection` to mock the class and lightweight structures are used to avoid breaking these classes when the arguments change."]]],[]]
