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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-14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 webpage details the \u003ccode\u003eBlockingPublisherConnection\u003c/code\u003e interface for the Google Cloud Pub/Sub service, used to publish events.\u003c/p\u003e\n"],["\u003cp\u003eVersion 2.37.0-rc is the latest release candidate, while 2.36.0 is the current stable version, with older versions available for reference.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eBlockingPublisherConnection\u003c/code\u003e defines pure-virtual methods for all \u003ccode\u003eBlockingPublisher\u003c/code\u003e overloads, facilitating custom behavior injection and testing.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eMakeBlockingPublisherConnection()\u003c/code\u003e is the function to use to create an instance that connects to the live Cloud Pub/Sub service.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003ePublish()\u003c/code\u003e function, defined within the interface, allows users to send messages to a Pub/Sub topic and returns a status.\u003c/p\u003e\n"]]],[],null,[]]
