A factory function to construct an object of type LineageConnection.
The returned connection object should not be used directly; instead it should be passed as an argument to the constructor of LineageClient.
The optional options argument may be used to configure aspects of the returned LineageConnection. 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\u003eThe latest version of the Data Catalog Lineage API is 2.37.0-rc, and the page provides access to the documentation for this version as well as numerous previous releases.\u003c/p\u003e\n"],["\u003cp\u003eThe documentation details classes such as \u003ccode\u003eLineageClient\u003c/code\u003e and \u003ccode\u003eLineageConnection\u003c/code\u003e, which are used to track data flows and establish a connection to the Lineage service, respectively.\u003c/p\u003e\n"],["\u003cp\u003eThe document includes classes defining various retry policies, like \u003ccode\u003eLineageLimitedErrorCountRetryPolicy\u003c/code\u003e and \u003ccode\u003eLineageLimitedTimeRetryPolicy\u003c/code\u003e, which control how the API client retries failed requests.\u003c/p\u003e\n"],["\u003cp\u003eThe page documents structs used for configuring the Lineage API, including \u003ccode\u003eLineageBackoffPolicyOption\u003c/code\u003e, \u003ccode\u003eLineageRetryPolicyOption\u003c/code\u003e, and others, which enable customization of backoff, idempotency, and polling policies.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eMakeLineageConnection\u003c/code\u003e function is documented as the way to create a \u003ccode\u003eLineageConnection\u003c/code\u003e object, and explains how to use various options lists to customize the connection and that the returned object should be passed to the constructor of the \u003ccode\u003eLineageClient\u003c/code\u003e.\u003c/p\u003e\n"]]],[],null,["# Namespace google::cloud::datacatalog_lineage_v1 (2.42.0-rc)\n\nVersion latestkeyboard_arrow_down\n\n- [2.42.0-rc (latest)](/cpp/docs/reference/datacatalog/latest/namespacegoogle_1_1cloud_1_1datacatalog__lineage__v1)\n- [2.41.0](/cpp/docs/reference/datacatalog/2.41.0/namespacegoogle_1_1cloud_1_1datacatalog__lineage__v1)\n- [2.40.0](/cpp/docs/reference/datacatalog/2.40.0/namespacegoogle_1_1cloud_1_1datacatalog__lineage__v1)\n- [2.39.0](/cpp/docs/reference/datacatalog/2.39.0/namespacegoogle_1_1cloud_1_1datacatalog__lineage__v1)\n- [2.38.0](/cpp/docs/reference/datacatalog/2.38.0/namespacegoogle_1_1cloud_1_1datacatalog__lineage__v1)\n- [2.37.0](/cpp/docs/reference/datacatalog/2.37.0/namespacegoogle_1_1cloud_1_1datacatalog__lineage__v1)\n- [2.36.0](/cpp/docs/reference/datacatalog/2.36.0/namespacegoogle_1_1cloud_1_1datacatalog__lineage__v1)\n- [2.35.0](/cpp/docs/reference/datacatalog/2.35.0/namespacegoogle_1_1cloud_1_1datacatalog__lineage__v1)\n- [2.34.0](/cpp/docs/reference/datacatalog/2.34.0/namespacegoogle_1_1cloud_1_1datacatalog__lineage__v1)\n- [2.33.0](/cpp/docs/reference/datacatalog/2.33.0/namespacegoogle_1_1cloud_1_1datacatalog__lineage__v1)\n- [2.32.0](/cpp/docs/reference/datacatalog/2.32.0/namespacegoogle_1_1cloud_1_1datacatalog__lineage__v1)\n- [2.31.0](/cpp/docs/reference/datacatalog/2.31.0/namespacegoogle_1_1cloud_1_1datacatalog__lineage__v1)\n- [2.30.0](/cpp/docs/reference/datacatalog/2.30.0/namespacegoogle_1_1cloud_1_1datacatalog__lineage__v1)\n- [2.29.0](/cpp/docs/reference/datacatalog/2.29.0/namespacegoogle_1_1cloud_1_1datacatalog__lineage__v1)\n- [2.28.0](/cpp/docs/reference/datacatalog/2.28.0/namespacegoogle_1_1cloud_1_1datacatalog__lineage__v1)\n- [2.27.0](/cpp/docs/reference/datacatalog/2.27.0/namespacegoogle_1_1cloud_1_1datacatalog__lineage__v1)\n- [2.26.0](/cpp/docs/reference/datacatalog/2.26.0/namespacegoogle_1_1cloud_1_1datacatalog__lineage__v1)\n- [2.25.1](/cpp/docs/reference/datacatalog/2.25.1/namespacegoogle_1_1cloud_1_1datacatalog__lineage__v1)\n- [2.24.0](/cpp/docs/reference/datacatalog/2.24.0/namespacegoogle_1_1cloud_1_1datacatalog__lineage__v1)\n- [2.23.0](/cpp/docs/reference/datacatalog/2.23.0/namespacegoogle_1_1cloud_1_1datacatalog__lineage__v1)\n- [2.22.1](/cpp/docs/reference/datacatalog/2.22.1/namespacegoogle_1_1cloud_1_1datacatalog__lineage__v1)\n- [2.21.0](/cpp/docs/reference/datacatalog/2.21.0/namespacegoogle_1_1cloud_1_1datacatalog__lineage__v1)\n- [2.20.0](/cpp/docs/reference/datacatalog/2.20.0/namespacegoogle_1_1cloud_1_1datacatalog__lineage__v1)\n- [2.19.0](/cpp/docs/reference/datacatalog/2.19.0/namespacegoogle_1_1cloud_1_1datacatalog__lineage__v1)\n- [2.18.0](/cpp/docs/reference/datacatalog/2.18.0/namespacegoogle_1_1cloud_1_1datacatalog__lineage__v1)\n- [2.17.0](/cpp/docs/reference/datacatalog/2.17.0/namespacegoogle_1_1cloud_1_1datacatalog__lineage__v1)\n- [2.16.0](/cpp/docs/reference/datacatalog/2.16.0/namespacegoogle_1_1cloud_1_1datacatalog__lineage__v1)\n- [2.15.1](/cpp/docs/reference/datacatalog/2.15.1/namespacegoogle_1_1cloud_1_1datacatalog__lineage__v1)\n- [2.14.0](/cpp/docs/reference/datacatalog/2.14.0/namespacegoogle_1_1cloud_1_1datacatalog__lineage__v1)\n- [2.13.0](/cpp/docs/reference/datacatalog/2.13.0/namespacegoogle_1_1cloud_1_1datacatalog__lineage__v1)\n- [2.12.0](/cpp/docs/reference/datacatalog/2.12.0/namespacegoogle_1_1cloud_1_1datacatalog__lineage__v1)\n- [2.11.0](/cpp/docs/reference/datacatalog/2.11.0/namespacegoogle_1_1cloud_1_1datacatalog__lineage__v1) \n\nClasses\n-------\n\n### [LineageClient](/cpp/docs/reference/datacatalog/latest/classgoogle_1_1cloud_1_1datacatalog__lineage__v1_1_1LineageClient)\n\nLineage is used to track data flows between assets over time.\n\n### [LineageConnection](/cpp/docs/reference/datacatalog/latest/classgoogle_1_1cloud_1_1datacatalog__lineage__v1_1_1LineageConnection)\n\nThe [`LineageConnection`](/cpp/docs/reference/datacatalog/latest/classgoogle_1_1cloud_1_1datacatalog__lineage__v1_1_1LineageConnection) object for [`LineageClient`](/cpp/docs/reference/datacatalog/latest/classgoogle_1_1cloud_1_1datacatalog__lineage__v1_1_1LineageClient).\n\n### [LineageConnectionIdempotencyPolicy](/cpp/docs/reference/datacatalog/latest/classgoogle_1_1cloud_1_1datacatalog__lineage__v1_1_1LineageConnectionIdempotencyPolicy)\n\n### [LineageLimitedErrorCountRetryPolicy](/cpp/docs/reference/datacatalog/latest/classgoogle_1_1cloud_1_1datacatalog__lineage__v1_1_1LineageLimitedErrorCountRetryPolicy)\n\nA retry policy for [`LineageConnection`](/cpp/docs/reference/datacatalog/latest/classgoogle_1_1cloud_1_1datacatalog__lineage__v1_1_1LineageConnection) based on counting errors.\n\n### [LineageLimitedTimeRetryPolicy](/cpp/docs/reference/datacatalog/latest/classgoogle_1_1cloud_1_1datacatalog__lineage__v1_1_1LineageLimitedTimeRetryPolicy)\n\nA retry policy for [`LineageConnection`](/cpp/docs/reference/datacatalog/latest/classgoogle_1_1cloud_1_1datacatalog__lineage__v1_1_1LineageConnection) based on elapsed time.\n\n### [LineageRetryPolicy](/cpp/docs/reference/datacatalog/latest/classgoogle_1_1cloud_1_1datacatalog__lineage__v1_1_1LineageRetryPolicy)\n\nThe retry policy for [`LineageConnection`](/cpp/docs/reference/datacatalog/latest/classgoogle_1_1cloud_1_1datacatalog__lineage__v1_1_1LineageConnection).\n\nStructs\n-------\n\n### [LineageBackoffPolicyOption](/cpp/docs/reference/datacatalog/latest/structgoogle_1_1cloud_1_1datacatalog__lineage__v1_1_1LineageBackoffPolicyOption)\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### [LineageConnectionIdempotencyPolicyOption](/cpp/docs/reference/datacatalog/latest/structgoogle_1_1cloud_1_1datacatalog__lineage__v1_1_1LineageConnectionIdempotencyPolicyOption)\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### [LineagePollingPolicyOption](/cpp/docs/reference/datacatalog/latest/structgoogle_1_1cloud_1_1datacatalog__lineage__v1_1_1LineagePollingPolicyOption)\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### [LineageRetryPolicyOption](/cpp/docs/reference/datacatalog/latest/structgoogle_1_1cloud_1_1datacatalog__lineage__v1_1_1LineageRetryPolicyOption)\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### MakeLineageConnection(Options)\n\nA factory function to construct an object of type [`LineageConnection`](/cpp/docs/reference/datacatalog/latest/classgoogle_1_1cloud_1_1datacatalog__lineage__v1_1_1LineageConnection). \nThe returned connection object should not be used directly; instead it should be passed as an argument to the constructor of [LineageClient](/cpp/docs/reference/datacatalog/latest/classgoogle_1_1cloud_1_1datacatalog__lineage__v1_1_1LineageClient).\n\nThe optional `options` argument may be used to configure aspects of the returned [`LineageConnection`](/cpp/docs/reference/datacatalog/latest/classgoogle_1_1cloud_1_1datacatalog__lineage__v1_1_1LineageConnection). 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`](about:invalid#zCSafez)\n- [`google::cloud::datacatalog_lineage_v1::LineagePolicyOptionList`](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### MakeDefaultLineageConnectionIdempotencyPolicy()"]]
