[gateway] Add the Gateway runtime, common HTTP layer, lifecycle, and test infrastructure - #3963
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[gateway] Add the Gateway runtime, common HTTP layer, lifecycle, and test infrastructure#3963beryllw wants to merge 7 commits into
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Introduces fluss-gateway as an independent Cargo workspace with library and executable entry points: strict configuration with stable exit codes, the shared error envelope, request-id/body-size/deadline middleware, the FIP-49 GET /health endpoint, REST and metrics listeners, task supervision with SIGTERM draining, and the OpenAPI 3.1 document generated from the typed router. Co-authored-by: gstamatakis95 <126914070+gstamatakis95@users.noreply.github.com>
…uster harness Covers the shared HTTP contract over a real listener, the compiled binary's startup, health, SIGTERM draining and exit codes, and a self-test of the fixed-version dockerized Fluss cluster harness that later capabilities reuse for their end-to-end suites. Co-authored-by: gstamatakis95 <126914070+gstamatakis95@users.noreply.github.com>
Runs the gateway workspace's build, unit tests, license headers, formatting, clippy and rustdoc, checks the checked-in OpenAPI document for drift and validates it externally, and runs the end-to-end suite in a job that fails rather than skipping silently when a selected scenario cannot start. Co-authored-by: gstamatakis95 <126914070+gstamatakis95@users.noreply.github.com>
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… rename the harness job Co-authored-by: gstamatakis95 <126914070+gstamatakis95@users.noreply.github.com>
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… artifact release
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Purpose
Linked issue: close #3958
First PR of FIP-49: the Gateway runtime and HTTP foundation the later Gateway APIs build on. Authentication, the Fluss backend, and the data APIs come in follow-up issues, so this PR has no Fluss runtime dependency yet.
Distilled from the FIP-49 PoC, whose foundation was written by @gstamatakis95 and is credited via
Co-authored-by.Brief change log
fluss-gateway/as an independent Cargo workspace, library plus executable.gateway.yamlof flat dotted keys, env and CLI overrides, strict validation, stable exit codes (2 = config, 1 = serving, 0 = clean drain).GET /healthreturning{status, uptime_ms}, the one health endpoint FIP-49 defines; it keeps answering while the process drains and guarded routes answer 503.SIGTERMdraining, failure propagation.Tests
61 unit tests (config, error taxonomy, middleware, drain deadlines, OpenAPI document), the HTTP contract over a real listener, the compiled binary's startup/health/
SIGTERM/exit codes, and a harness self-test that starts the fixed-version dockerized Fluss cluster. CI runs the E2E job so it fails rather than skips when a selected scenario cannot start.API and Format
New endpoints
GET /healthandGET /v1/openapi.json, described by the checked-in OpenAPI document. No change to existing APIs or storage formats.Documentation
Module-level rustdoc, enforced by
cargo doc -D warnings. User-facing documentation is tracked by the FIP-49 documentation issue.