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"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-04-17 UTC."],[[["This document outlines the `BlockingPublisherConnection` interface for connecting to the Cloud Pub/Sub service to publish events, with `2.37.0-rc` being the latest version."],["The interface uses pure-virtual methods, allowing users to inject custom behavior, such as with a Google Mock object, for testing `BlockingPublisher` objects."],["To connect to the actual Cloud Pub/Sub service, users can create a concrete instance using `MakeBlockingPublisherConnection()`."],["The document also introduces lightweight `*Params` nested classes for passing arguments, which helps to avoid breaking derived classes when member functions are updated."],["The `BlockingPublisherConnection` interface includes functions such as `Publish(PublishParams)` for publishing messages and `options()` for retrieving initialization options, with the former returning a `StatusOr\u003cstd::string\u003e` upon completion."]]],[]]
