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fix(MR-656): address Devin Review findings on /query and /change

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Two issues raised by Devin Review on PR #110:

1. `POST /query` mutation-rejection error pointed at the deprecated
   `/change` endpoint instead of the canonical `/mutate`. Fixed in
   three places: the runtime error message in `server_query`, the
   utoipa 400-response description, and the handler doc comment. The
   `QueryRequest` schema docstrings in `api.rs` got the same update so
   the openapi.json bodies match. Server and openapi tests updated.

2. `execute_change_remote` serialized `ChangeRequest` directly, which
   emits the new canonical field names `query` / `name` on the wire.
   `#[serde(alias = "query_source")]` only affects deserialization, so
   a newer CLI talking to an older server would have its `/change`
   POST body fail with "missing field: query_source". Fixed by
   extracting a `legacy_change_request_body` helper that hand-rolls
   the JSON with the legacy keys (`query_source` / `query_name`), the
   same byte-stable contract `execute_read_remote` already uses
   against `/read`. Added two unit tests on the helper to lock the
   wire shape in.

Co-Authored-By: Ragnor Comerford <ragnor.comerford@gmail.com>
This commit is contained in:
Devin AI 2026-05-23 13:48:21 +00:00
parent a3e1b27a63
commit 0949f28794
6 changed files with 103 additions and 25 deletions
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8
openapi.json
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@ -778,7 +778,7 @@
"queries"
],
"summary": "Execute an inline read query (friendlier-named alternative to `POST /read`).",
"description": "Designed for ad-hoc exploration and AI-agent tool-use: short field\nnames (`query`, `name`) match the CLI `-e` flag and the GQ `query`\nkeyword. Mutations (`insert`/`update`/`delete`) are rejected with 400\n-- use `POST /change` for write queries. Otherwise behaves\nidentically to `POST /read`: same target semantics (branch xor\nsnapshot), same Cedar action (Read), same response shape.",
"description": "Designed for ad-hoc exploration and AI-agent tool-use: short field\nnames (`query`, `name`) match the CLI `-e` flag and the GQ `query`\nkeyword. Mutations (`insert`/`update`/`delete`) are rejected with 400\n-- use `POST /mutate` (or its deprecated alias `POST /change`) for\nwrite queries. Otherwise behaves identically to `POST /read`: same\ntarget semantics (branch xor snapshot), same Cedar action (Read),\nsame response shape.",
"operationId": "query",
"requestBody": {
"content": {
@ -802,7 +802,7 @@
}
},
"400": {
"description": "Bad request - also returned when the query body contains mutations; use POST /change for write queries",
"description": "Bad request - also returned when the query body contains mutations; use POST /mutate (or its deprecated alias POST /change) for write queries",
"content": {
"application/json": {
"schema": {
@ -1611,7 +1611,7 @@
},
"QueryRequest": {
"type": "object",
"description": "Inline read-query request for `POST /query`.\n\nFriendlier-named alternative to [`ReadRequest`] for ad-hoc reads and\nAI-agent integration. Mutations are rejected with 400 — use `POST\n/change` for write queries. Field names are deliberately short\n(`query`, `name`) to match the GQ keyword and the CLI `-e` flag.",
"description": "Inline read-query request for `POST /query`.\n\nFriendlier-named alternative to [`ReadRequest`] for ad-hoc reads and\nAI-agent integration. Mutations are rejected with 400 — use `POST\n/mutate` (or its deprecated alias `POST /change`) for write queries.\nField names are deliberately short (`query`, `name`) to match the GQ\nkeyword and the CLI `-e` flag.",
"required": [
"query"
],
@ -1635,7 +1635,7 @@
},
"query": {
"type": "string",
"description": "GQ read-query source. May declare one or more named queries; pick one\nwith `name` when more than one is declared. Mutations\n(`insert`/`update`/`delete`) get 400 — use `POST /change` instead.",
"description": "GQ read-query source. May declare one or more named queries; pick one\nwith `name` when more than one is declared. Mutations\n(`insert`/`update`/`delete`) get 400 — use `POST /mutate` (or its\ndeprecated alias `POST /change`) instead.",
"example": "query get_person($name: String) {\n match {\n $p: Person { name: $name }\n }\n return { $p.name, $p.age }\n}"
},
"snapshot": {