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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-14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\u003eThe content provides a list of different versions of the \u003ccode\u003eBlockingPublisherConnection\u003c/code\u003e class for the Google Cloud Pub/Sub service, ranging from version 2.11.0 to the latest release candidate 2.37.0-rc.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eBlockingPublisherConnection\u003c/code\u003e defines the interface for connecting to the Cloud Pub/Sub service to publish events, with pure-virtual methods mirroring those in \u003ccode\u003eBlockingPublisher\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eUsers can inject custom behavior into \u003ccode\u003eBlockingPublisher\u003c/code\u003e objects using this interface, especially useful for testing purposes, such as using a Google Mock object.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003ePublish()\u003c/code\u003e function, taking \u003ccode\u003ePublishParams\u003c/code\u003e as its parameter, is the primary interface for publishing events, and returns a StatusOr< std::string >.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eoptions()\u003c/code\u003e function returns the options configured when the \u003ccode\u003eBlockingPublisherConnection\u003c/code\u003e was initialized, offering insight into the current setup.\u003c/p\u003e\n"]]],[],null,[]]
