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 BlockingPublisher. That is, all of BlockingPublisher'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 BlockingPublisher object for use in their own tests.
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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-14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\u003eBlockingPublisherConnection\u003c/code\u003e interface for the Cloud Pub/Sub service, which enables event publishing.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eBlockingPublisherConnection\u003c/code\u003e interface uses pure-virtual methods to allow for custom behavior, particularly in testing scenarios, and to avoid breaking derived classes.\u003c/p\u003e\n"],["\u003cp\u003eThe document provides links to documentation for numerous previous versions of the interface, including the latest release candidate version \u003ccode\u003e2.37.0-rc\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThe interface contains two main functions: \u003ccode\u003ePublish(PublishParams)\u003c/code\u003e, which sends a message, and \u003ccode\u003eoptions()\u003c/code\u003e, which returns the configured options.\u003c/p\u003e\n"],["\u003cp\u003eThere are params nested classes to avoid issues when changing the number or type of arguments for member functions.\u003c/p\u003e\n"]]],[],null,[]]
