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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-14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 class for the Cloud Pub/Sub service, which manages connections to publish events.\u003c/p\u003e\n"],["\u003cp\u003eThe latest version of the documentation is for version \u003ccode\u003e2.37.0-rc\u003c/code\u003e, with numerous prior versions available, ranging from \u003ccode\u003e2.36.0\u003c/code\u003e down to \u003ccode\u003e2.11.0\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eUsers can inject custom behaviors into a \u003ccode\u003eBlockingPublisher\u003c/code\u003e object for testing by implementing their own connections, as all of the overloads of the \u003ccode\u003eBlockingPublisher\u003c/code\u003e class forward to the one pure-virtual method declared in this interface.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003ePublish()\u003c/code\u003e function is defined within this interface, and takes \u003ccode\u003ePublishParams\u003c/code\u003e as a parameter, which will return a \u003ccode\u003eStatusOr<std::string>\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThe interface also includes an \u003ccode\u003eoptions()\u003c/code\u003e function that returns the options configured during initialization.\u003c/p\u003e\n"]]],[],null,[]]
