fix(dispatch): send echidnabot proof obligations as GraphQL variables by hyperpolymath · Pull Request #913 · hyperpolymath/hypatia

hyperpolymath · 2026-10-08T19:03:28Z

Summary

hypatia has two senders of echidnabot's submitProofObligation. FleetDispatcher routes proof-obligation findings, and LearningScheduler re-queues attempts after a strategy shift. Both sent a hand-built document, and they disagreed on its shape. This PR gives them one implementation: the new module Hypatia.EchidnabotObligation holds a static mutation document and builds a GraphQL variables map. The contract is echidnabot's SubmitProofObligationInput (hyperpolymath/echidnabot#169, on main at faeb280).

It fixes three defects:

Claim and context are now GraphQL variables, not inline literals. FleetDispatcher spliced them into "…" literals through escape_quotes/1, which escapes only ". A raw newline is illegal in a GraphQL string, so such a claim produced an invalid document; a backslash started an escape and altered the claim. Both now arrive byte for byte in {"query": …, "variables": {"input": {…}}}. escape_quotes/1 stays, because eight other bot mutations (sustainabot, rhodibot, glambot, seambot, cipherbot, finishbot, accessibilitybot, robot-repo-automaton) still use it.
LearningScheduler normalises the prover hint. submit_requeue/4 upcased any name, so lean4 became LEAN4, which is not a ProverKind value, and echidnabot rejects the whole request. It now uses the same normalise_prover_hint/1 as FleetDispatcher, which moved into the shared module. A name with no ProverKind omits the prover field, and echidnabot uses its own default.
HYPATIA_ECHIDNABOT_URL has one meaning. FleetDispatcher treats every HYPATIA_<BOT>_URL as a base URL and appends /graphql. LearningScheduler POSTed to the value exactly as given, so the same setting reached / in one sender and /graphql in the other. Both now append /graphql through EchidnabotObligation.graphql_url/1. No port default changes. LearningScheduler still defaults to http://localhost:9001, now as a base URL; it was http://localhost:9001/graphql. The port question is left to the owner.

LearningScheduler.requeue_candidates/3 is now public, with @doc and @spec, so the test can check the request it puts on the wire.

Review fix (83a0c59). normalise_prover_hint/1 also accepts hol-light, echidnabot's own slug for HOL Light (map_prover_kind in its src/api/graphql.rs at faeb280), as well as hypatia's hol_light (lib/neural/prover_recommender.ex:268). Before this, a hint that came from echidnabot was dropped and the obligation went out with no prover.

No issue to close. These are three entries from the estate findings inbox.

Type of change

🐛 Bug fix — echidnabot rejected or altered both senders' requests, as described above.
✨ New feature — no new behaviour. The shared module carries existing logic.
💥 Breaking change — narrowly. If an operator set HYPATIA_ECHIDNABOT_URL to a URL ending in /graphql for LearningScheduler, it now posts to …/graphql/graphql. The same value already sent FleetDispatcher to …/graphql/graphql before this PR. No tracked file sets the variable: git grep finds only LearningScheduler, the new module and test. FleetDispatcher builds the name at runtime as "HYPATIA_" <> bot <> "_URL".
🕳️ Soundness fix — not applicable. No checker or proof verdict changes; this fixes how obligations are delivered.
📖 Documentation — no docs describe these senders. The new module's @moduledoc states the contract and the URL rule.
🧹 Refactor / tech debt — the shared module is a consolidation, but the wire format changes, so this is not behaviour-preserving.
⚡ Performance — not applicable.
🔧 Build / CI / tooling — not applicable. No workflow, lockfile or config changes.

📌 New pins

PR head SHA: 83a0c597334569020c3d9874e360117ca7d68a67 (was 11cb915; the new commit answers the CodeRabbit review)
No action uses: SHAs, actions.lock entries, mix.lock records or container digests change. The PR touches four files, all under lib/ and test/.

How has this been verified?

All commands were run in the PR worktree with Elixir 1.17.3 / OTP 27, MIX_ENV=test unless stated otherwise:

New test file test/echidnabot_dispatch_test.exs. A one-shot gen_tcp server captures the request line and the full body (read to its Content-Length) that each sender actually sends. It covers:
- FleetDispatcher: exact variables for a claim with a newline, a tab, a backslash and quotes; prover omitted for lean4; variables recorded in the manifest line; the JSON envelope on the fleet-coordinator path;
- LearningScheduler: POST /graphql from a base URL; exact variables with HOL_LIGHT; lean4 sends no prover and no LEAN4 anywhere;
- unit tests for normalise_prover_hint/1, variables/5 and graphql_url/1.
mix test test/echidnabot_dispatch_test.exs test/fleet_dispatcher_honesty_test.exs test/fleet_dispatcher_test.exs test/dispatch_manifest_test.exs → 19 tests, 0 failures.
mix test (whole suite) → 1782 tests, 0 failures, 242 excluded.
Planted control: the four sender tests fail on the old code. They were run against origin/main 297e70c, with only requeue_candidates flipped from defp to def so they could call it → 4 tests, 4 failures:
- FleetDispatcher: envelope["variables"] is nil, and a BadMapError with lean4;
- LearningScheduler: request line POST / HTTP/1.1 where /graphql was expected, and a BadMapError with lean4.
The captured wire bytes from the old code show claim: "line one⏎line two \ x \"q\"" (a raw newline, an unescaped backslash) from FleetDispatcher, and prover: LEAN4, inline: true posted to / from LearningScheduler.

The five tests added later were not run against the old code.
Mutants on the new code, each restored afterwards (sha256sum -c OK):
- putting the String.upcase back into submit_requeue → 1 failure (the lean4 test);
- dropping graphql_url/1 from LearningScheduler → 1 failure (POST / HTTP/1.1).
mix compile --warnings-as-errors → clean in both the default (dev) env and the test env.
mix format --check-formatted on the four changed files → rc 0. Run repo-wide, it reports only lib/rules/workflow_audit.ex, which is unformatted on main and untouched here. No CI job runs mix format.
standards/.githooks/docstring-scan.sh --worktree --check → rc 0, but it reports all four files as skipped, because its tier 1 covers shell only. Docstrings were checked by hand: @doc + @spec on every public function added or changed; # comment blocks on the private helpers (a @doc on a defp is a compiler warning).
git log -1 --show-signature → good ED25519 signature, with the repo's configured identity.
Review fix 83a0c59, run with the system Elixir 1.18.3 / OTP 27, MIX_ENV=test (CI pins 1.17 / OTP 27):
- mix test test/echidnabot_dispatch_test.exs → 9 tests, 0 failures;
- planted mutant: with the new "hol-light" entry deleted → 9 tests, 1 failure, exactly the new hol-light assertion; the file was restored and checksum-verified;
- whole suite → 1782 tests, 0 failures, 242 excluded;
- mix compile --warnings-as-errors (dev and test) printed no warnings; mix format --check-formatted on the two changed files → rc 0;
- git log -1 --show-signature → good ED25519 signature.

Checklist

My commits are signed: SSH ED25519 key, verified locally with git log --show-signature.
I ran the project's own checks/tests locally and they pass: whole mix test suite, --warnings-as-errors in two envs, mix format on the changed files.
New files carry the correct SPDX-License-Identifier: lib/echidnabot_obligation.ex and test/echidnabot_dispatch_test.exs are MPL-2.0. No existing file was relicensed.
Docs are updated, and no public claim now overstates what the code does. The comments say newlines, backslashes and quotes arrive byte for byte. They do not cover non-ASCII; see the first note below.
I have not introduced a soundness hole. Flagged: unknown prover names are now dropped (echidnabot default), where LearningScheduler used to send an invalid enum value.

Notes for reviewers

Non-ASCII claims still fail on FleetDispatcher's transport. This is pre-existing and not fixed here. http_post/2 hands :httpc String.to_charlist(body), so a body containing ∀ becomes a charlist with values above 255. In a direct probe, :httpc sent no bytes and did not return within its own timeout. Through FleetDispatcher, the capture server received the header and then a closed socket before the body. LearningScheduler sends the binary and delivered ∀ intact (310 valid UTF-8 bytes). The test's hostile claim is ASCII-only, which is why these tests do not catch it. The one-line fix is to pass body as a binary, as LearningScheduler does. It is left for a separate change because it affects every bot's dispatch.
Fleet-coordinator path. With HYPATIA_FLEET_URL set and no per-bot URL, echidnabot dispatches used to send the raw document to /dispatch/echidnabot. They now send the JSON envelope, because a raw document cannot carry variables. Other bots are unchanged. No server in the estate implements /dispatch/{bot}.
Manifest. The pending.jsonl record for an echidnabot dispatch now has a "variables" key next to "query". No consumer replays .query.
CI coverage: none at present. On paper, integration-tests in tests.yml (mix test --include integration) is the only CI job that runs the new test file; estate-rules runs two named files. In practice, tests.yml and ci.yml both end in startup_failure on this head (runs 37829935482 and 37829933717), as they do on main @ 297e70c, so CI ran no Elixir tests for this PR. The test evidence above is local only. The startup deaths line up exactly with the actions.lock desync tracked in actions.lock desync (taiki-e v2.87.24, smtp-notify v0.5.0) turns lockfile-verify and Hypatia Baseline red on main #914.
main startup deaths, pre-existing: CI, Tests, Security, CodeQL Security Analysis and Build Gossamer GUI are all startup_failure on 297e70c. This PR touches no workflow. Tracked in actions.lock desync (taiki-e v2.87.24, smtp-notify v0.5.0) turns lockfile-verify and Hypatia Baseline red on main #914 (and codeql.yml uses a bare commit the lock does not vouch for, and mislabels it as v4.38.0 #901 for CodeQL).
Ports. LearningScheduler keeps 9001, FleetDispatcher has no default, and HYPATIA_VERISIM_URL still defaults to 8080. Estate port doctrine is an owner decision and outside this PR.

Deferred red checks (not required; both also red on `main` @ `297e70c`)

governance / Actions lockfile verify: deferred to actions.lock desync (taiki-e v2.87.24, smtp-notify v0.5.0) turns lockfile-verify and Hypatia Baseline red on main #914. Dependabot moved taiki-e/install-action to v2.87.24 and smtp-notify-action to v0.5.0 without relocking. This PR touches no workflow and no lock.
governance / Validate Hypatia Baseline: deferred to actions.lock desync (taiki-e v2.87.24, smtp-notify v0.5.0) turns lockfile-verify and Hypatia Baseline red on main #914. It reports 5 new unpinned_action findings in the same 5 workflows. These need SHA-pinning or re-keyed ACKs (owner decision); a relock alone does not clear them.

🤖 Generated with Claude Code

https://claude.ai/code/session_015bTuGfwCcvjrmNFejydTML

Both senders of echidnabot's submitProofObligation now share one module, Hypatia.EchidnabotObligation: a static mutation document plus a variables map. Claim, context and prover never enter the document. - FleetDispatcher no longer splices claim/context into an inline string literal through escape_quotes/1, which escaped only `"`: a raw newline or a backslash in a claim produced an invalid or altered document. escape_quotes/1 stays: eight other bot mutations use it. - LearningScheduler.submit_requeue/4 reuses normalise_prover_hint/1 and omits `prover` when the hint has no ProverKind. It used to upcase any name (`lean4` -> `LEAN4`), an invalid enum value that fails the whole request. - HYPATIA_ECHIDNABOT_URL is a base URL for both senders; each appends /graphql. LearningScheduler used to POST to the value as given, with a default that already ended in /graphql. No port default changes. - LearningScheduler.requeue_candidates/3 is public, so the re-queue request can be tested on the wire. New test/echidnabot_dispatch_test.exs captures the HTTP request each sender puts on the wire. Its four sender tests fail on the old code. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_015bTuGfwCcvjrmNFejydTML

coderabbitai · 2026-10-08T19:03:46Z

📝 Summary

Summary by CodeRabbit

New Features
- Proof-obligation submissions now send claim, context and recognised prover details as GraphQL variables.
- Re-queue submissions use the same variable-based request format. Optional inline settings are included when provided.
- GraphQL endpoint URLs are built from the configured Echidnabot base URL, defaulting to http://localhost:9001.
Bug Fixes
- Invalid or unrecognised prover hints are omitted from submissions rather than sent as invalid values.
- Dispatch manifests now record GraphQL variables when present.
Tests
- Added coverage for request formats, prover handling, endpoint URLs and dispatch routes.

Walkthrough

Fleet dispatch and candidate re-queue submissions now use a shared GraphQL mutation and variables. Fleet dispatch supports variable-bearing request envelopes and records supplied variables. Tests capture requests and check both submission paths.

Changes

Obligation submission

Layer / File(s)	Summary
Shared mutation and variables `lib/echidnabot_obligation.ex`, `test/echidnabot_dispatch_test.exs`	The new module provides a static mutation, builds input variables, maps recognised prover hints, handles optional `inline` values, and constructs a GraphQL URL. Tests cover these behaviours.
Fleet dispatch request flow `lib/fleet_dispatcher.ex`, `test/echidnabot_dispatch_test.exs`	Fleet dispatch uses the shared mutation and variables. Dispatch records include supplied variables. Per-bot requests use a GraphQL envelope; fleet-coordinator requests use an envelope when variables are present and retain the raw query otherwise. Tests capture and check these requests.
Candidate re-queue submission `lib/learning_scheduler.ex`, `test/echidnabot_dispatch_test.exs`	`requeue_candidates/3` is public. It builds the endpoint from the configured base URL and submits the shared mutation with variables. Tests check the request fields and prover handling.

Estimated code review effort: 3 (Moderate) | ~25 minutes

Change: Bug fix

Sequence Diagram(s)

sequenceDiagram
  participant FleetDispatcher
  participant EchidnabotObligation
  participant DispatchEndpoint
  FleetDispatcher->>EchidnabotObligation: Build mutation and variables
  FleetDispatcher->>DispatchEndpoint: Send GraphQL request envelope
  DispatchEndpoint-->>FleetDispatcher: Return response

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 71.43% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 7 functions across 4 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description check	✅ Passed	The description clearly explains the shared GraphQL variable implementation, prover normalisation, URL handling, tests, and known limitations. It directly relates to the changeset.
Title check	✅ Passed	The title clearly and concisely summarises the main change: sending Echidnabot proof obligations as GraphQL variables.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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_{A rabbit packs a query neat,
With variables tucked in at their seat.
The prover hint is checked with care,
And optional fields join the pair.
The GraphQL path is set to go,
Then off the proof requests all flow.}

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Actionable comments posted: 1

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Inline comments:
Review comments at @lib/echidnabot_obligation.ex:
- Line 42: Update normalise_prover_hint/1 to accept the upstream “hol-light”
identifier as well as “hol_light”, mapping both to the same prover value; add a
test confirming that “hol-light” is normalized successfully.

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Run ID: 23b96524-d318-42b3-91c6-4fb0fe1a5176

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Reviewing files that changed from the base of the PR and between 297e70c and 11cb915.

📒 Files selected for processing (4)

lib/echidnabot_obligation.ex
lib/fleet_dispatcher.ex
lib/learning_scheduler.ex
test/echidnabot_dispatch_test.exs

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GitHub Actions: Governance / 0_governance _ Validate Hypatia Baseline.txt: fix(dispatch): send echidnabot proof obligations as GraphQL variables

Conclusion: failure

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Summary

Type of change

📌 New pins

How has this been verified?

Checklist

Notes for reviewers

Deferred red checks (not required; both also red on main @ 297e70c)

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Walkthrough

Changes

Sequence Diagram(s)

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