viirya opened a new pull request, #3:
URL: https://github.com/apache/spark-connect-gateway/pull/3
### What changes were proposed in this pull request?
Part of importing the Spark Connect Gateway reference implementation into
`apache/spark-connect-gateway` as a series of small, bottom-up PRs (tracked
in
the do-not-merge reference PR #1).
This adds the `scg-routing` crate — the routing core of the gateway. It
defines
the central traits and types that the pool and store layers implement and
that
the proxy routes through:
- `SessionKey` — the routing key derived from a request
- `Pool` — the backend-pool trait (implemented later by pool-static /
pool-k8s)
- `AffinityStore` — the session-affinity store trait (implemented later by
store-memory / store-redis)
- `Router` — ties them together
`scg-routing` is a leaf crate (no internal dependencies), so it compiles and
tests on its own. It is appended to the workspace `members` list. Subsequent
PRs add the crates that depend on it.
### Why are the changes needed?
Implements the reference gateway from the approved SPIP (SPARK-58455),
imported
one reviewable piece at a time.
### Does this PR introduce _any_ user-facing change?
No.
### How was this patch tested?
`cargo fmt --all --check`, `cargo clippy --workspace --all-targets -- -D
warnings`,
`cargo build --workspace`, and `cargo test --workspace` all pass locally
(scg-routing has 15 unit tests).
### Was this patch authored or co-authored using generative AI tooling?
Yes, co-authored with Claude Code.
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