steve
0d0e8e069e
Phase 2: proves ADR-0006/0008 semantics end to end with the fake provider and fake clock (cooldown expiry, backoff growth, inline-alias failover, permanent-error policies, retry budgets, bench-mid-request, exhaustion reporting, custom classifier, chain-of-one parity). Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
54 lines
2.8 KiB
Markdown
54 lines
2.8 KiB
Markdown
# progress
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## 2026-06-10 — Phase 2: health + failover chain, proven
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**Landed:** the full deterministic failover test matrix over the fake
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provider + fake clock (no sleeps, no network): single-transient recovery
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via same-target retry; repeated transients bench + advance; cooldown expiry
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re-admits and success resets; backoff doubling across bench rounds;
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mixed chain with an inline-expanded alias element failing over through the
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expanded targets; permanent-policy default (fail-fast on auth) and
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`AdvanceOnPermanent` override; `TransientRetries` disabled/custom; retry
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loop stops early when the tracker benches mid-request; exhaustion error
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lists skipped-while-benched targets; custom classifier override; chain-of-
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one gets identical semantics; HTTP 529 fails over. Implementation needed no
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changes — Phase 1's executor held up.
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**Next:** Phase 3 — OpenAI/Anthropic/Ollama/foreman REST clients + media
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pipeline.
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## 2026-06-10 — Phase 1: foundations, ADRs, skeleton, docs
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**Landed:**
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- Module scaffold (Go 1.26), `.gitea/workflows/ci.yaml` (foreman-style
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gates: build, vet, race tests, tidy-diff), `.env.example`.
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- `llm/` canonical contract: Message/Part (sealed; text+image),
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Request/Options, Response/Usage/FinishReason, Stream/StreamEvent,
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Tool/Toolbox (panic-safe Execute), Capabilities (zero-value semantics),
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Model/Provider interfaces, APIError + transient/permanent Classify.
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- `health/`: clock-injected tracker — consecutive-failure threshold,
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exponential capped cooldown, reset-on-success, thread-safe; full
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deterministic test suite (fake clock).
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- Root: Registry (providers/aliases/schemes/health), Parse with the binding
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grammar (verbatim model ids, inline recursive alias expansion, cycle
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detection, dedup), LLM_* env-DSN loading (go-llm-parity lazy fallback +
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eager LoadEnv/New scan), chain executor implementing Model
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(retry-on-transient, bench-on-repeat, skip-benched, 404-advance,
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fail-fast-on-auth, joined exhaustion errors). Built-ins register as
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resolvable stubs until their phases land.
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- `provider/fake/`: scriptable provider (per-model outcome queues, request
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recording, capabilities overrides, streaming) — the hermetic test rig.
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- ADRs 0001–0008 + index; CLAUDE.md; honest README with pending-marked
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matrix.
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- Tests cover the two required cases: the trailing-`thinking` chain parse
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and `LLM_M1=foreman://token@host` loading (plus DSN table, lazy fallback,
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cycle detection, chain failover/backoff/exhaustion, toolbox execution,
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error classification).
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**Notes:** chain executor landed in Phase 1 (design was settled);
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Phase 2 deepens its test matrix (cooldown re-admission via fake clock,
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alias-in-chain failover, permanent-policy override) and wires anything the
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tests flush out.
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**Next:** Phase 2 — exhaustive health/chain test matrix.
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