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kafka: add server debug switch for franz-go and enable it in CI - #6567
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Add a temporary server default while preserving explicit URI selections. Enable franz-go in integration test startup configuration and cover config merging with regression tests. Remove the mistakenly committed root server.toml.
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Merge Risk: ⚪ Minimal · up to
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| Check name | Status | Explanation | Resolution |
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| Out of Scope Changes check |  |
The root server.toml deletion is not required by issue #6566. The file only contained newarch=true, and the diff provides no connection between its removal and the franz-go server default or integ… |
Remove the root server.toml deletion from this pull request, or link an issue that requires this cleanup. |
| Docstring Coverage | |
Docstring coverage is 11.11% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 9 functions across 8 files. | Write docstrings for the functions missing them to satisfy the coverage threshold. |
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Check name Status Explanation Title check The title clearly summarizes the main changes: adding a server debug switch for franz-go and enabling it in CI. Description check The description follows the required template. It includes the issue reference, change summary, test results, compatibility assessment, documentation assessment, and release note. It also clearly stat… Linked Issues check Issue #6566requires a temporary server-level franz-go default for integration CI and preservation of explicitkafka-clientselections.DebugConfig.EnableKafkaFranzGoadds the TOML setting. `NewOp…Full details: Description check
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Explanation
The description follows the required template. It includes the issue reference, change summary, test results, compatibility assessment, documentation assessment, and release note. It also clearly states that Kafka integration tests were not run locally and why.
Full details: Linked Issues check
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Explanation
Issue
#6566requires a temporary server-level franz-go default for integration CI and preservation of explicitkafka-clientselections.DebugConfig.EnableKafkaFranzGoadds the TOML setting.NewOptionsselects Sarama by default and Franz when the server setting is enabled. Existing URI selection remains authoritative, and tests cover URI overrides, decoding, cloning, and client selection. The shared integration configuration enables franz-go by default, and both authentication configurations enable it explicitly.
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Full details: Out of Scope Changes check
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Explanation
The root
server.tomldeletion is not required by issue#6566. The file only containednewarch=true, and the diff provides no connection between its removal and the franz-go server default or integration CI. The integration test expectation update supports the changed Kafka client behavior.Resolution
Remove the root
server.tomldeletion from this pull request, or link an issue that requires this cleanup.
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A rabbit flips the Kafka switch,
Franz-Go hops in, quick and brisk.
URI paths still lead the way,
Tests guard each code display.
Configs bloom with settings bright,
And sinks now choose their route just right.
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Inline comments:
Review comments at @tests/integration_tests/_utils/run_cdc_server:
- Around line 206-209: Update the TOML scan in the awk block to track whether it
is still at the root, count a root-level dotted debug key as both configured and
an existing debug table, and recognize quoted enable-kafka-franz-go keys inside
[debug]. Ignore dotted keys found after entering another table; add regression
cases for both supported override forms and a dotted key under another table.
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📒 Files selected for processing: 7
pkg/config/debug.gopkg/config/server_config_test.gopkg/sink/kafka/options.gopkg/sink/kafka/options_test.goserver.tomltests/integration_tests/_utils/run_cdc_servertests/integration_tests/_utils/run_cdc_server_test.go
💤 Files with no reviewable changes: 1
- server.toml
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Select a shared default config in the integration-test launcher and let explicit test configs override it. Enable franz-go in Kafka authentication case configs and remove the generic config injection and its script test.
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[APPROVALNOTIFIER] This PR is APPROVED This pull-request has been approved by: asddongmen, lidezhu, nongfushanquan, wk989898 The full list of commands accepted by this bot can be found here. The pull request process is described here DetailsNeeds approval from an approver in each of these files:
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What problem does this PR solve?
Issue Number: close #6566
What is changed and how it works?
[debug] enable-kafka-franz-goserver option, disabled by default. Explicitkafka-clientURI settings take precedence.cdc_server.tomlthat enables franz-go. The launcher uses this file by default, and an explicit--configselects the case-specific file.server.toml.Check List
Tests
make unit_test_pkg PKG='./pkg/config ./pkg/sink/kafka' P=2— 407 tests passed with race detection.make cdc— passed.bash -n tests/integration_tests/_utils/run_cdc_server tests/integration_tests/cli_with_auth/run.sh tests/integration_tests/cli_tls_with_auth/run.sh— passed.tools/bin/shfmt -d tests/integration_tests/_utils/run_cdc_server tests/integration_tests/cli_with_auth/run.sh tests/integration_tests/cli_tls_with_auth/run.sh— passed.git diff --check— passed.Kafka integration tests were not run locally because required cluster binaries were unavailable.
Questions
Will it cause performance regression or break compatibility?
Client selection happens when sink options are constructed. The server default remains Sarama, and explicit URI selections retain their behavior. Kafka integration tests opt in to franz-go through their server configuration.
Do you need to update user documentation, design documentation or monitoring documentation?
No. This is a temporary debug option for the franz-go migration.
Release note
Summary by CodeRabbit