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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-14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 latest version available is 2.37.0-rc, with numerous other versions, down to 2.11.0, also accessible.\u003c/p\u003e\n"],["\u003cp\u003eThis interface, \u003ccode\u003eBlockingPublisherConnection\u003c/code\u003e, allows custom behavior injection into \u003ccode\u003eBlockingPublisher\u003c/code\u003e objects, making it ideal for testing.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eMakeBlockingPublisherConnection()\u003c/code\u003e is used to create a real-world connection to the Cloud Pub/Sub service.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003ePublish(PublishParams)\u003c/code\u003e is a function that defines the interface for \u003ccode\u003eBlockingPublisher::Publish()\u003c/code\u003e and returns a \u003ccode\u003eStatusOr<std::string>\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eoptions()\u003c/code\u003e function is available to get the options configured during initialization.\u003c/p\u003e\n"]]],[],null,[]]
