The returned connection object should not be used directly; instead it should be passed as an argument to the constructor ofEventarcClient.
The optionaloptionsargument may be used to configure aspects of the returnedEventarcConnection. Expected options are any of the types in the following option lists:
[[["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 2025-09-04 UTC."],[[["\u003cp\u003eThis webpage provides documentation for the Google Cloud Eventarc C++ client library, with version 2.23.0 being the current focus.\u003c/p\u003e\n"],["\u003cp\u003eThe latest release candidate is version 2.37.0-rc, and the page lists available documentation for previous versions dating back to 2.11.0, with links to the respective namespaces.\u003c/p\u003e\n"],["\u003cp\u003eThe library offers classes like \u003ccode\u003eEventarcClient\u003c/code\u003e and \u003ccode\u003eEventarcConnection\u003c/code\u003e for subscribing to and managing Google Cloud events, as well as classes for managing retry policies.\u003c/p\u003e\n"],["\u003cp\u003eStructs are available to configure options such as backoff, idempotency, polling, and retry policies, each for use with \u003ccode\u003egoogle::cloud::Options\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eA factory function, \u003ccode\u003eMakeEventarcConnection\u003c/code\u003e, is detailed for constructing \u003ccode\u003eEventarcConnection\u003c/code\u003e objects, which are then used by the \u003ccode\u003eEventarcClient\u003c/code\u003e, with the ability to configure with a variety of option lists.\u003c/p\u003e\n"]]],[],null,["# Namespace google::cloud::eventarc_v1 (2.23.0)\n\nVersion 2.23.0keyboard_arrow_down\n\n- [2.42.0-rc (latest)](/cpp/docs/reference/eventarc/latest/namespacegoogle_1_1cloud_1_1eventarc__v1)\n- [2.41.0](/cpp/docs/reference/eventarc/2.41.0/namespacegoogle_1_1cloud_1_1eventarc__v1)\n- [2.40.0](/cpp/docs/reference/eventarc/2.40.0/namespacegoogle_1_1cloud_1_1eventarc__v1)\n- [2.39.0](/cpp/docs/reference/eventarc/2.39.0/namespacegoogle_1_1cloud_1_1eventarc__v1)\n- [2.38.0](/cpp/docs/reference/eventarc/2.38.0/namespacegoogle_1_1cloud_1_1eventarc__v1)\n- [2.37.0](/cpp/docs/reference/eventarc/2.37.0/namespacegoogle_1_1cloud_1_1eventarc__v1)\n- [2.36.0](/cpp/docs/reference/eventarc/2.36.0/namespacegoogle_1_1cloud_1_1eventarc__v1)\n- [2.35.0](/cpp/docs/reference/eventarc/2.35.0/namespacegoogle_1_1cloud_1_1eventarc__v1)\n- [2.34.0](/cpp/docs/reference/eventarc/2.34.0/namespacegoogle_1_1cloud_1_1eventarc__v1)\n- [2.33.0](/cpp/docs/reference/eventarc/2.33.0/namespacegoogle_1_1cloud_1_1eventarc__v1)\n- [2.32.0](/cpp/docs/reference/eventarc/2.32.0/namespacegoogle_1_1cloud_1_1eventarc__v1)\n- [2.31.0](/cpp/docs/reference/eventarc/2.31.0/namespacegoogle_1_1cloud_1_1eventarc__v1)\n- [2.30.0](/cpp/docs/reference/eventarc/2.30.0/namespacegoogle_1_1cloud_1_1eventarc__v1)\n- [2.29.0](/cpp/docs/reference/eventarc/2.29.0/namespacegoogle_1_1cloud_1_1eventarc__v1)\n- [2.28.0](/cpp/docs/reference/eventarc/2.28.0/namespacegoogle_1_1cloud_1_1eventarc__v1)\n- [2.27.0](/cpp/docs/reference/eventarc/2.27.0/namespacegoogle_1_1cloud_1_1eventarc__v1)\n- [2.26.0](/cpp/docs/reference/eventarc/2.26.0/namespacegoogle_1_1cloud_1_1eventarc__v1)\n- [2.25.1](/cpp/docs/reference/eventarc/2.25.1/namespacegoogle_1_1cloud_1_1eventarc__v1)\n- [2.24.0](/cpp/docs/reference/eventarc/2.24.0/namespacegoogle_1_1cloud_1_1eventarc__v1)\n- [2.23.0](/cpp/docs/reference/eventarc/2.23.0/namespacegoogle_1_1cloud_1_1eventarc__v1)\n- [2.22.1](/cpp/docs/reference/eventarc/2.22.1/namespacegoogle_1_1cloud_1_1eventarc__v1)\n- [2.21.0](/cpp/docs/reference/eventarc/2.21.0/namespacegoogle_1_1cloud_1_1eventarc__v1)\n- [2.20.0](/cpp/docs/reference/eventarc/2.20.0/namespacegoogle_1_1cloud_1_1eventarc__v1)\n- [2.19.0](/cpp/docs/reference/eventarc/2.19.0/namespacegoogle_1_1cloud_1_1eventarc__v1)\n- [2.18.0](/cpp/docs/reference/eventarc/2.18.0/namespacegoogle_1_1cloud_1_1eventarc__v1)\n- [2.17.0](/cpp/docs/reference/eventarc/2.17.0/namespacegoogle_1_1cloud_1_1eventarc__v1)\n- [2.16.0](/cpp/docs/reference/eventarc/2.16.0/namespacegoogle_1_1cloud_1_1eventarc__v1)\n- [2.15.1](/cpp/docs/reference/eventarc/2.15.1/namespacegoogle_1_1cloud_1_1eventarc__v1)\n- [2.14.0](/cpp/docs/reference/eventarc/2.14.0/namespacegoogle_1_1cloud_1_1eventarc__v1)\n- [2.13.0](/cpp/docs/reference/eventarc/2.13.0/namespacegoogle_1_1cloud_1_1eventarc__v1)\n- [2.12.0](/cpp/docs/reference/eventarc/2.12.0/namespacegoogle_1_1cloud_1_1eventarc__v1)\n- [2.11.0](/cpp/docs/reference/eventarc/2.11.0/namespacegoogle_1_1cloud_1_1eventarc__v1) \n\nClasses\n-------\n\n### [EventarcClient](/cpp/docs/reference/eventarc/2.23.0/classgoogle_1_1cloud_1_1eventarc__v1_1_1EventarcClient)\n\nEventarc allows users to subscribe to various events that are provided by Google Cloud services and forward them to supported destinations.\n\n### [EventarcConnection](/cpp/docs/reference/eventarc/2.23.0/classgoogle_1_1cloud_1_1eventarc__v1_1_1EventarcConnection)\n\nThe [`EventarcConnection`](/cpp/docs/reference/eventarc/2.23.0/classgoogle_1_1cloud_1_1eventarc__v1_1_1EventarcConnection) object for [`EventarcClient`](/cpp/docs/reference/eventarc/2.23.0/classgoogle_1_1cloud_1_1eventarc__v1_1_1EventarcClient).\n\n### [EventarcConnectionIdempotencyPolicy](/cpp/docs/reference/eventarc/2.23.0/classgoogle_1_1cloud_1_1eventarc__v1_1_1EventarcConnectionIdempotencyPolicy)\n\n### [EventarcLimitedErrorCountRetryPolicy](/cpp/docs/reference/eventarc/2.23.0/classgoogle_1_1cloud_1_1eventarc__v1_1_1EventarcLimitedErrorCountRetryPolicy)\n\nA retry policy for [`EventarcConnection`](/cpp/docs/reference/eventarc/2.23.0/classgoogle_1_1cloud_1_1eventarc__v1_1_1EventarcConnection) based on counting errors.\n\n### [EventarcLimitedTimeRetryPolicy](/cpp/docs/reference/eventarc/2.23.0/classgoogle_1_1cloud_1_1eventarc__v1_1_1EventarcLimitedTimeRetryPolicy)\n\nA retry policy for [`EventarcConnection`](/cpp/docs/reference/eventarc/2.23.0/classgoogle_1_1cloud_1_1eventarc__v1_1_1EventarcConnection) based on elapsed time.\n\n### [EventarcRetryPolicy](/cpp/docs/reference/eventarc/2.23.0/classgoogle_1_1cloud_1_1eventarc__v1_1_1EventarcRetryPolicy)\n\nThe retry policy for [`EventarcConnection`](/cpp/docs/reference/eventarc/2.23.0/classgoogle_1_1cloud_1_1eventarc__v1_1_1EventarcConnection).\n\nStructs\n-------\n\n### [EventarcBackoffPolicyOption](/cpp/docs/reference/eventarc/2.23.0/structgoogle_1_1cloud_1_1eventarc__v1_1_1EventarcBackoffPolicyOption)\n\nUse with [`google::cloud::Options`](https://cloud.google.com/cpp/docs/reference/common/latest/classgoogle_1_1cloud_1_1Options.html) to configure the backoff policy.\n\n### [EventarcConnectionIdempotencyPolicyOption](/cpp/docs/reference/eventarc/2.23.0/structgoogle_1_1cloud_1_1eventarc__v1_1_1EventarcConnectionIdempotencyPolicyOption)\n\nUse with [`google::cloud::Options`](https://cloud.google.com/cpp/docs/reference/common/latest/classgoogle_1_1cloud_1_1Options.html) to configure which operations are retried.\n\n### [EventarcPollingPolicyOption](/cpp/docs/reference/eventarc/2.23.0/structgoogle_1_1cloud_1_1eventarc__v1_1_1EventarcPollingPolicyOption)\n\nUse with [`google::cloud::Options`](https://cloud.google.com/cpp/docs/reference/common/latest/classgoogle_1_1cloud_1_1Options.html) to configure the long-running operations polling policy.\n\n### [EventarcRetryPolicyOption](/cpp/docs/reference/eventarc/2.23.0/structgoogle_1_1cloud_1_1eventarc__v1_1_1EventarcRetryPolicyOption)\n\nUse with [`google::cloud::Options`](https://cloud.google.com/cpp/docs/reference/common/latest/classgoogle_1_1cloud_1_1Options.html) to configure the retry policy.\n\nFunctions\n---------\n\n### MakeEventarcConnection(Options)\n\nA factory function to construct an object of type [`EventarcConnection`](/cpp/docs/reference/eventarc/2.23.0/classgoogle_1_1cloud_1_1eventarc__v1_1_1EventarcConnection). \nThe returned connection object should not be used directly; instead it should be passed as an argument to the constructor of [EventarcClient](/cpp/docs/reference/eventarc/2.23.0/classgoogle_1_1cloud_1_1eventarc__v1_1_1EventarcClient).\n\nThe optional `options` argument may be used to configure aspects of the returned [`EventarcConnection`](/cpp/docs/reference/eventarc/2.23.0/classgoogle_1_1cloud_1_1eventarc__v1_1_1EventarcConnection). Expected options are any of the types in the following option lists:\n\n- [`google::cloud::CommonOptionList`](about:invalid#zCSafez)\n- [`google::cloud::GrpcOptionList`](https://cloud.google.com/cpp/docs/reference/common/latest/namespacegoogle_1_1cloud.html)\n- [`google::cloud::UnifiedCredentialsOptionList`](about:invalid#zCSafez)\n- [`google::cloud::eventarc_v1::EventarcPolicyOptionList`](about:invalid#zCSafez)\n\n| **Note:** Unexpected options will be ignored. To log unexpected options instead, set `GOOGLE_CLOUD_CPP_ENABLE_CLOG=yes` in the environment.\n\n### MakeDefaultEventarcConnectionIdempotencyPolicy()"]]
