Support for predefined consumers of CDC topics #119
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This update replicates terraform resource behavior (https://ydb.tech/docs/en/dev/terraform#ydb-table-changefeed) and allows the user to implement non-trivial CDC reading logic without worrying about creation of the consumers |
nvamelichev
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Jan 20, 2025
repository-ydb-v2/src/main/java/tech/ydb/yoj/repository/ydb/client/YdbSchemaOperations.java
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nvamelichev
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databind/src/main/java/tech/ydb/yoj/databind/schema/Changefeed.java
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Adding an option to specify a list of consumers that will be created alongside the CDC topic during the initial bootstrap of the application. A minor consideration is that TopicService/AlterTopic is not idempotent and will throw an exception if we specify already existing consumers in the addConsumer block. To address this behavior, we will perform a describe operation each time a table is attempted to be created. These changes have been tested against local YDB (ydbplatform/local-ydb:latest version). --------- Co-authored-by: Daniil Zulin <daniil-zulin@yandex-team.ru>
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Fixed in release 2.6.6 (already on Maven Central). |
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In this PR, we are adding an option to specify a list of consumers that will be created alongside the CDC topic during the initial bootstrap of the application.
A minor consideration is that TopicService/AlterTopic is not idempotent and will throw an exception if we specify already existing consumers in the addConsumer block. To address this behavior, we will perform a describe operation each time a table is attempted to be created.
These changes have been tested against local YDB (ydbplatform/local-ydb:latest version).