The returned connection object should not be used directly; instead it should be passed as an argument to the constructor of EventarcClient.
The optional options argument may be used to configure aspects of the returned EventarcConnection. 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"]],[["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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-14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 document provides comprehensive reference information for the Google Cloud Eventarc C++ client library, with version 2.37.0-rc being the latest and 2.18.0 being the current version displayed.\u003c/p\u003e\n"],["\u003cp\u003eThe library facilitates subscribing to events from Google Cloud services and forwarding them to supported destinations, as described in the \u003ccode\u003eEventarcClient\u003c/code\u003e class.\u003c/p\u003e\n"],["\u003cp\u003eIt defines several classes for managing connections, including \u003ccode\u003eEventarcConnection\u003c/code\u003e, \u003ccode\u003eEventarcConnectionIdempotencyPolicy\u003c/code\u003e, and retry policies like \u003ccode\u003eEventarcLimitedErrorCountRetryPolicy\u003c/code\u003e and \u003ccode\u003eEventarcLimitedTimeRetryPolicy\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThe library includes various structs for configuring options such as \u003ccode\u003eEventarcBackoffPolicyOption\u003c/code\u003e, \u003ccode\u003eEventarcConnectionIdempotencyPolicyOption\u003c/code\u003e, \u003ccode\u003eEventarcPollingPolicyOption\u003c/code\u003e, and \u003ccode\u003eEventarcRetryPolicyOption\u003c/code\u003e to customize the behavior of the client.\u003c/p\u003e\n"],["\u003cp\u003eThere is a factory function, \u003ccode\u003eMakeEventarcConnection\u003c/code\u003e, that is used to create an \u003ccode\u003eEventarcConnection\u003c/code\u003e object, to which you can pass custom options to alter aspects of the connections behavior.\u003c/p\u003e\n"]]],[],null,["# Namespace google::cloud::eventarc_v1 (2.18.0)\n\nVersion 2.18.0keyboard_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/2.18.0/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/2.18.0/classgoogle_1_1cloud_1_1eventarc__v1_1_1EventarcConnection)\n\nThe [`EventarcConnection`](/cpp/docs/reference/eventarc/2.18.0/classgoogle_1_1cloud_1_1eventarc__v1_1_1EventarcConnection) object for [`EventarcClient`](/cpp/docs/reference/eventarc/2.18.0/classgoogle_1_1cloud_1_1eventarc__v1_1_1EventarcClient).\n\n### [EventarcConnectionIdempotencyPolicy](/cpp/docs/reference/eventarc/2.18.0/classgoogle_1_1cloud_1_1eventarc__v1_1_1EventarcConnectionIdempotencyPolicy)\n\n### [EventarcLimitedErrorCountRetryPolicy](/cpp/docs/reference/eventarc/2.18.0/classgoogle_1_1cloud_1_1eventarc__v1_1_1EventarcLimitedErrorCountRetryPolicy)\n\nA retry policy for [`EventarcConnection`](/cpp/docs/reference/eventarc/2.18.0/classgoogle_1_1cloud_1_1eventarc__v1_1_1EventarcConnection) based on counting errors.\n\n### [EventarcLimitedTimeRetryPolicy](/cpp/docs/reference/eventarc/2.18.0/classgoogle_1_1cloud_1_1eventarc__v1_1_1EventarcLimitedTimeRetryPolicy)\n\nA retry policy for [`EventarcConnection`](/cpp/docs/reference/eventarc/2.18.0/classgoogle_1_1cloud_1_1eventarc__v1_1_1EventarcConnection) based on elapsed time.\n\n### [EventarcRetryPolicy](/cpp/docs/reference/eventarc/2.18.0/classgoogle_1_1cloud_1_1eventarc__v1_1_1EventarcRetryPolicy)\n\nThe retry policy for [`EventarcConnection`](/cpp/docs/reference/eventarc/2.18.0/classgoogle_1_1cloud_1_1eventarc__v1_1_1EventarcConnection).\n\nStructs\n-------\n\n### [EventarcBackoffPolicyOption](/cpp/docs/reference/eventarc/2.18.0/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/2.18.0/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/2.18.0/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/2.18.0/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/2.18.0/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/2.18.0/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/2.18.0/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`](https://cloud.google.com/cpp/docs/reference/common/latest/namespacegoogle_1_1cloud.html)\n- [`google::cloud::GrpcOptionList`](https://cloud.google.com/cpp/docs/reference/common/latest/namespacegoogle_1_1cloud.html)\n- [`google::cloud::UnifiedCredentialsOptionList`](https://cloud.google.com/cpp/docs/reference/common/latest/namespacegoogle_1_1cloud.html)\n- [`google::cloud::eventarc_v1::EventarcPolicyOptionList`](/cpp/docs/reference/eventarc/2.18.0/namespacegoogle_1_1cloud_1_1eventarc__v1)\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()\n\nType Aliases\n------------\n\n### EventarcPolicyOptionList\n\n**Alias Of** : `OptionList\u003c EventarcRetryPolicyOption, EventarcBackoffPolicyOption, EventarcPollingPolicyOption, EventarcConnectionIdempotencyPolicyOption \u003e` \nThe options applicable to Eventarc."]]
