A connection to the Cloud Pub/Sub service to publish events.
This interface defines pure-virtual methods for each of the user-facing overload sets in Publisher. That is, all of Publisher's overloads will forward to the one pure-virtual method declared in this interface. This allows users to inject custom behavior (e.g., with a Google Mock object) in a Publisher object for use in their own tests.
To create a concrete instance that connects you to the real Cloud Pub/Sub service, see MakePublisherConnection().
The *Params nested classes
Applications may define classes derived from PublisherConnection, 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.
[[["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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-14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 document details the \u003ccode\u003ePublisherConnection\u003c/code\u003e interface for the Google Cloud Pub/Sub C++ library, providing access to various versions of the API, with the most recent being \u003ccode\u003e2.37.0-rc\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003ePublisherConnection\u003c/code\u003e interface defines pure-virtual methods that correspond to the user-facing overloads found within the \u003ccode\u003ePublisher\u003c/code\u003e class, allowing custom behavior to be implemented.\u003c/p\u003e\n"],["\u003cp\u003eThe document defines the interface functions \u003ccode\u003ePublish\u003c/code\u003e, \u003ccode\u003eFlush\u003c/code\u003e, and \u003ccode\u003eResumePublish\u003c/code\u003e, detailing their parameters and return types, including the use of \u003ccode\u003e*Params\u003c/code\u003e nested classes for argument handling.\u003c/p\u003e\n"],["\u003cp\u003eUsers can connect to the real Cloud Pub/Sub service using \u003ccode\u003eMakePublisherConnection()\u003c/code\u003e, as per documentation, or define derived classes of \u003ccode\u003ePublisherConnection\u003c/code\u003e for custom operations, including mocking for testing.\u003c/p\u003e\n"]]],[],null,[]]
