feat(backend): add HTTP/Llama TextModel wrappers + verify downstream
Phase 1 Steps 1.4 and 1.5 complete: - HTTPTextModel wraps HTTPBackend as inference.TextModel (Generate/Chat yield entire response as single Token, Classify unsupported, BatchGenerate sequential) - LlamaTextModel embeds HTTPTextModel, overrides ModelType -> "llama" and Close -> llama.Stop() - 19 new tests (17 HTTPTextModel + 2 LlamaTextModel), all passing - Verified service.go and judge.go downstream consumers unchanged - Updated CLAUDE.md: backend_mlx.go DONE, architecture table current, critical context reflects Phase 1 complete - Updated TODO.md: Steps 1.4 and 1.5 marked done Co-Authored-By: Virgil <virgil@lethean.io> Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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4 changed files with 487 additions and 86 deletions
97
CLAUDE.md
97
CLAUDE.md
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@ -14,101 +14,42 @@ ML inference backends, scoring engine, and agent orchestrator. 7.5K LOC across 4
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## Critical Context: go-inference Migration
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**This is the #1 priority.** Phase 1 in TODO.md.
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**Phase 1 is complete.** Both directions of the bridge are implemented:
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The package currently defines its own `Backend` interface that returns `(string, error)`. The shared `go-inference` package defines `TextModel` which returns `iter.Seq[Token]` (Go 1.23+ range-over-func). Everything downstream is blocked until go-ml bridges these two interfaces.
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1. **Forward adapter** (`adapter.go`): `inference.TextModel` (iter.Seq) -> `ml.Backend`/`ml.StreamingBackend` (string/callback). Used by `backend_mlx.go` to wrap Metal GPU models.
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2. **Reverse adapters** (`backend_http_textmodel.go`): `HTTPBackend`/`LlamaBackend` -> `inference.TextModel`. Enables HTTP and llama-server backends to be used anywhere that expects a go-inference TextModel.
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### Interface Gap
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### Interface Bridge (DONE)
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```
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go-ml (CURRENT) go-inference (TARGET)
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───────────────── ─────────────────────
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Backend.Generate(ctx, prompt, GenOpts) TextModel.Generate(ctx, prompt, ...GenerateOption)
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→ (string, error) → iter.Seq[Token]
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Backend.Chat(ctx, messages, GenOpts) TextModel.Chat(ctx, messages, ...GenerateOption)
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→ (string, error) → iter.Seq[Token]
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StreamingBackend.GenerateStream( (streaming is built-in via iter.Seq)
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ctx, prompt, opts, TokenCallback)
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→ error
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GenOpts{Temperature, MaxTokens, Model} GenerateConfig{MaxTokens, Temperature,
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TopK, TopP, StopTokens, RepeatPenalty}
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(configured via WithMaxTokens(n) etc.)
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ml.Backend (string) <──adapter.go──> inference.TextModel (iter.Seq[Token])
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<──backend_http_textmodel.go──>
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```
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### What the Adapter Must Do
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- `InferenceAdapter`: TextModel -> Backend + StreamingBackend (for MLX, ROCm, etc.)
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- `HTTPTextModel`: HTTPBackend -> TextModel (for remote APIs)
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- `LlamaTextModel`: LlamaBackend -> TextModel (for managed llama-server)
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```go
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// InferenceAdapter wraps go-inference.TextModel to satisfy ml.Backend + ml.StreamingBackend.
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// This is the bridge between the new iterator-based API and the legacy string-return API.
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type InferenceAdapter struct {
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model inference.TextModel
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}
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### backend_mlx.go (DONE)
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// Generate collects all tokens from the iterator into a string.
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func (a *InferenceAdapter) Generate(ctx context.Context, prompt string, opts GenOpts) (string, error) {
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genOpts := convertOpts(opts) // GenOpts → []inference.GenerateOption
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var buf strings.Builder
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for tok := range a.model.Generate(ctx, prompt, genOpts...) {
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buf.WriteString(tok.Text)
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}
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if err := a.model.Err(); err != nil {
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return buf.String(), err
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}
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return buf.String(), nil
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}
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Rewritten from 253 LOC to ~35 LOC. Loads via `inference.LoadModel()` and wraps in `InferenceAdapter`. Uses go-mlx's Metal backend registered via `init()`.
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// GenerateStream yields tokens to the callback as they arrive.
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func (a *InferenceAdapter) GenerateStream(ctx context.Context, prompt string, opts GenOpts, cb TokenCallback) error {
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genOpts := convertOpts(opts)
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for tok := range a.model.Generate(ctx, prompt, genOpts...) {
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if err := cb(tok.Text); err != nil {
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return err
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}
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}
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return a.model.Err()
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}
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```
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### Downstream Consumers Verified
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### backend_mlx.go Is Broken
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After go-mlx Phase 4, the old subpackage imports no longer exist:
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- `forge.lthn.ai/core/go-mlx/cache` — **REMOVED** (now `internal/metal`)
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- `forge.lthn.ai/core/go-mlx/model` — **REMOVED** (now `internal/metal`)
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- `forge.lthn.ai/core/go-mlx/sample` — **REMOVED** (now `internal/metal`)
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- `forge.lthn.ai/core/go-mlx/tokenizer` — **REMOVED** (now `internal/metal`)
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The new go-mlx public API is:
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```go
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import (
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"forge.lthn.ai/core/go-inference"
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_ "forge.lthn.ai/core/go-mlx" // registers "metal" backend via init()
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)
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m, err := inference.LoadModel("/path/to/model/", inference.WithContextLen(4096))
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defer m.Close()
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for tok := range m.Generate(ctx, "prompt", inference.WithMaxTokens(128)) {
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fmt.Print(tok.Text)
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}
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```
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**The rewrite**: Delete the 253 LOC of manual tokenisation/KV cache/sampling. Replace with ~60 LOC that loads via go-inference and wraps in `InferenceAdapter`.
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- `service.go` — `Service.Generate()` calls `Backend.Generate()`. InferenceAdapter satisfies Backend. No changes needed.
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- `judge.go` — `Judge.judgeChat()` calls `Backend.Generate()`. Same contract, works as before.
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## Commands
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```bash
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go mod download # FIRST RUN: populate go.sum
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go test ./... # Run all tests (some will fail until Phase 1)
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go test ./... # Run all tests
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go test -v -run TestHeuristic # Single test
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go test -bench=. ./... # Benchmarks (none exist yet)
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go test -race ./... # Race detector
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go vet ./... # Static analysis
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```
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**Note**: `backend_mlx.go` won't compile until rewritten (Phase 1) — it imports dead go-mlx subpackages. On darwin, the compiler will hit these broken imports. The Phase 1 rewrite fixes this by replacing the 253 LOC with ~60 LOC using go-inference.
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## Local Dependencies
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All resolve via `replace` directives in go.mod:
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@ -125,9 +66,11 @@ All resolve via `replace` directives in go.mod:
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| File | Backend | Status |
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|------|---------|--------|
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| `backend_mlx.go` | MLX/Metal GPU | **BROKEN** — old imports, needs Phase 1 rewrite |
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| `backend_llama.go` | llama-server subprocess | Works, needs go-inference wrapper |
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| `backend_http.go` | HTTP API (OpenAI-compatible) | Works, needs go-inference wrapper |
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| `adapter.go` | InferenceAdapter (TextModel -> Backend) | DONE — bridges go-inference to ml.Backend |
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| `backend_mlx.go` | MLX/Metal GPU | DONE — uses go-inference LoadModel + InferenceAdapter |
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| `backend_http.go` | HTTP API (OpenAI-compatible) | Works as ml.Backend |
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| `backend_http_textmodel.go` | HTTPTextModel + LlamaTextModel | DONE — reverse wrappers (Backend -> TextModel) |
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| `backend_llama.go` | llama-server subprocess | Works as ml.Backend |
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| `ollama.go` | Ollama helpers | Works |
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### Scoring Engine
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14
TODO.md
14
TODO.md
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@ -76,19 +76,15 @@ Everything downstream is blocked on this. The old `backend_mlx.go` imports go-ml
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### Step 1.4: HTTPBackend and LlamaBackend wrappers
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- [ ] **HTTPBackend go-inference wrapper** — HTTPBackend already works fine as `ml.Backend`. For go-inference compatibility, write a thin wrapper that implements `inference.TextModel`:
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- `Generate()` calls HTTP API, yields entire response as single Token
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- `Chat()` same
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- This is lower priority than MLX — HTTP backends don't need the full iter.Seq pattern
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- Consider SSE streaming: `/v1/chat/completions` with `"stream": true` returns SSE events that CAN be yielded as `iter.Seq[Token]`
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- [x] **HTTPBackend go-inference wrapper** — `backend_http_textmodel.go`: `HTTPTextModel` wraps `HTTPBackend` to implement `inference.TextModel`. Generate/Chat yield entire response as single Token. Classify returns unsupported error. BatchGenerate processes prompts sequentially. 17 tests pass.
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- [ ] **LlamaBackend go-inference wrapper** — LlamaBackend delegates to HTTPBackend already. Same treatment.
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- [x] **LlamaBackend go-inference wrapper** — `backend_http_textmodel.go`: `LlamaTextModel` embeds `HTTPTextModel`, overrides `ModelType()` -> "llama" and `Close()` -> `llama.Stop()`. 2 tests pass.
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### Step 1.5: Verify downstream consumers
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- [ ] **Service.Generate() still works** — `service.go` calls `Backend.Generate()`. After migration, backends wrapped in `InferenceAdapter` must still satisfy `ml.Backend`.
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- [ ] **Judge still works** — `judge.go` uses `Backend.Generate()` for LLM-as-judge. Verify scoring pipeline runs end-to-end.
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- [ ] **go-ai tools_ml.go** — Uses `ml.Service` directly. No code changes needed in go-ai if `ml.Backend` interface is preserved.
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- [x] **Service.Generate() still works** — `service.go` calls `Backend.Generate()`. InferenceAdapter satisfies ml.Backend. HTTPBackend/LlamaBackend still implement ml.Backend directly. No changes needed.
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- [x] **Judge still works** — `judge.go` calls `Backend.Generate()` via `judgeChat()`. Same Backend contract, works as before. No changes needed.
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- [x] **go-ai tools_ml.go** — Uses `ml.Service` directly. `ml.Backend` interface is preserved, no code changes needed in go-ai.
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---
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156
backend_http_textmodel.go
Normal file
156
backend_http_textmodel.go
Normal file
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@ -0,0 +1,156 @@
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// SPDX-Licence-Identifier: EUPL-1.2
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package ml
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import (
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"context"
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"fmt"
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"iter"
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"forge.lthn.ai/core/go-inference"
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)
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// HTTPTextModel wraps an HTTPBackend to satisfy the inference.TextModel interface.
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// This enables cross-platform consistency — HTTP backends can be used anywhere
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// that expects a go-inference TextModel (e.g. go-ai, go-i18n).
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//
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// Generate and Chat yield the entire HTTP response as a single Token since
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// the OpenAI-compatible API returns complete responses (non-streaming).
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type HTTPTextModel struct {
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http *HTTPBackend
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lastErr error
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}
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// Compile-time check: HTTPTextModel implements inference.TextModel.
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var _ inference.TextModel = (*HTTPTextModel)(nil)
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// NewHTTPTextModel wraps an HTTPBackend as an inference.TextModel.
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func NewHTTPTextModel(backend *HTTPBackend) *HTTPTextModel {
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return &HTTPTextModel{http: backend}
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}
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// Generate sends a single prompt to the HTTP backend and yields the entire
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// response as a single Token.
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func (m *HTTPTextModel) Generate(ctx context.Context, prompt string, opts ...inference.GenerateOption) iter.Seq[inference.Token] {
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return func(yield func(inference.Token) bool) {
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cfg := inference.ApplyGenerateOpts(opts)
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genOpts := GenOpts{
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Temperature: float64(cfg.Temperature),
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MaxTokens: cfg.MaxTokens,
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Model: m.http.Model(),
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}
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result, err := m.http.Generate(ctx, prompt, genOpts)
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if err != nil {
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m.lastErr = err
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return
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}
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m.lastErr = nil
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yield(inference.Token{Text: result})
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}
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}
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// Chat sends a multi-turn conversation to the HTTP backend and yields the
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// entire response as a single Token.
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func (m *HTTPTextModel) Chat(ctx context.Context, messages []inference.Message, opts ...inference.GenerateOption) iter.Seq[inference.Token] {
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return func(yield func(inference.Token) bool) {
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cfg := inference.ApplyGenerateOpts(opts)
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genOpts := GenOpts{
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Temperature: float64(cfg.Temperature),
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MaxTokens: cfg.MaxTokens,
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Model: m.http.Model(),
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}
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// Convert inference.Message to ml.Message.
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mlMsgs := make([]Message, len(messages))
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for i, msg := range messages {
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mlMsgs[i] = Message{Role: msg.Role, Content: msg.Content}
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}
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result, err := m.http.Chat(ctx, mlMsgs, genOpts)
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if err != nil {
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m.lastErr = err
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return
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}
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m.lastErr = nil
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yield(inference.Token{Text: result})
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}
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}
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// Classify is not supported by HTTP backends. Returns an error.
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func (m *HTTPTextModel) Classify(_ context.Context, _ []string, _ ...inference.GenerateOption) ([]inference.ClassifyResult, error) {
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return nil, fmt.Errorf("classify not supported by HTTP backend")
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}
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// BatchGenerate processes multiple prompts sequentially via Generate.
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func (m *HTTPTextModel) BatchGenerate(ctx context.Context, prompts []string, opts ...inference.GenerateOption) ([]inference.BatchResult, error) {
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results := make([]inference.BatchResult, len(prompts))
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for i, prompt := range prompts {
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var tokens []inference.Token
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for tok := range m.Generate(ctx, prompt, opts...) {
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tokens = append(tokens, tok)
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}
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results[i] = inference.BatchResult{
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Tokens: tokens,
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Err: m.lastErr,
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}
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}
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return results, nil
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}
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// ModelType returns the configured model name from the underlying HTTPBackend.
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func (m *HTTPTextModel) ModelType() string {
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model := m.http.Model()
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if model == "" {
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return "http"
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}
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return model
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}
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// Info returns minimal model metadata for an HTTP backend.
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func (m *HTTPTextModel) Info() inference.ModelInfo {
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return inference.ModelInfo{Architecture: "http"}
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}
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// Metrics returns zero metrics — HTTP backends don't track token-level performance.
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func (m *HTTPTextModel) Metrics() inference.GenerateMetrics {
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return inference.GenerateMetrics{}
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}
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// Err returns the error from the last Generate or Chat call, if any.
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func (m *HTTPTextModel) Err() error {
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return m.lastErr
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}
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// Close is a no-op for HTTP backends — there are no resources to release.
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func (m *HTTPTextModel) Close() error {
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return nil
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}
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// LlamaTextModel wraps a LlamaBackend as an inference.TextModel. It embeds
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// HTTPTextModel for Generate/Chat but overrides ModelType and Close to
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// reflect the managed llama-server process.
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type LlamaTextModel struct {
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*HTTPTextModel
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llama *LlamaBackend
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}
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// Compile-time check: LlamaTextModel implements inference.TextModel.
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var _ inference.TextModel = (*LlamaTextModel)(nil)
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// NewLlamaTextModel wraps a LlamaBackend as an inference.TextModel.
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func NewLlamaTextModel(backend *LlamaBackend) *LlamaTextModel {
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return &LlamaTextModel{
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HTTPTextModel: NewHTTPTextModel(backend.http),
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llama: backend,
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}
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}
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// ModelType returns "llama" to identify this as a managed llama-server backend.
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func (m *LlamaTextModel) ModelType() string {
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return "llama"
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}
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// Close stops the managed llama-server process.
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func (m *LlamaTextModel) Close() error {
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return m.llama.Stop()
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}
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306
backend_http_textmodel_test.go
Normal file
306
backend_http_textmodel_test.go
Normal file
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@ -0,0 +1,306 @@
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// SPDX-Licence-Identifier: EUPL-1.2
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package ml
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import (
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"context"
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"encoding/json"
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"net/http"
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"net/http/httptest"
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"testing"
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"forge.lthn.ai/core/go-inference"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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)
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// newTestServer creates an httptest.Server that responds with the given content.
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func newTestServer(t *testing.T, content string) *httptest.Server {
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t.Helper()
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return httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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resp := chatResponse{
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Choices: []chatChoice{{Message: Message{Role: "assistant", Content: content}}},
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}
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if err := json.NewEncoder(w).Encode(resp); err != nil {
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t.Fatalf("encode response: %v", err)
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}
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}))
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}
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// newTestServerMulti creates an httptest.Server that responds based on the prompt.
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func newTestServerMulti(t *testing.T) *httptest.Server {
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t.Helper()
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return httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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var req chatRequest
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if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
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t.Fatalf("decode request: %v", err)
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}
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// Echo back the last message content with a prefix.
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lastContent := ""
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if len(req.Messages) > 0 {
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lastContent = req.Messages[len(req.Messages)-1].Content
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}
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resp := chatResponse{
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Choices: []chatChoice{{Message: Message{Role: "assistant", Content: "reply:" + lastContent}}},
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}
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json.NewEncoder(w).Encode(resp)
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}))
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}
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func TestHTTPTextModel_Generate_Good(t *testing.T) {
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srv := newTestServer(t, "Hello from HTTP")
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defer srv.Close()
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backend := NewHTTPBackend(srv.URL, "test-model")
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model := NewHTTPTextModel(backend)
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var collected []inference.Token
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for tok := range model.Generate(context.Background(), "test prompt") {
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collected = append(collected, tok)
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}
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require.Len(t, collected, 1)
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assert.Equal(t, "Hello from HTTP", collected[0].Text)
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assert.NoError(t, model.Err())
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}
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func TestHTTPTextModel_Generate_WithOpts_Good(t *testing.T) {
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srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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var req chatRequest
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if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
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t.Fatalf("decode: %v", err)
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}
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// Verify that options are passed through.
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assert.InDelta(t, 0.8, req.Temperature, 0.01)
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assert.Equal(t, 100, req.MaxTokens)
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resp := chatResponse{
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Choices: []chatChoice{{Message: Message{Role: "assistant", Content: "configured"}}},
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}
|
||||
json.NewEncoder(w).Encode(resp)
|
||||
}))
|
||||
defer srv.Close()
|
||||
|
||||
backend := NewHTTPBackend(srv.URL, "test-model")
|
||||
model := NewHTTPTextModel(backend)
|
||||
|
||||
var result string
|
||||
for tok := range model.Generate(context.Background(), "prompt",
|
||||
inference.WithTemperature(0.8),
|
||||
inference.WithMaxTokens(100),
|
||||
) {
|
||||
result = tok.Text
|
||||
}
|
||||
assert.Equal(t, "configured", result)
|
||||
assert.NoError(t, model.Err())
|
||||
}
|
||||
|
||||
func TestHTTPTextModel_Chat_Good(t *testing.T) {
|
||||
srv := newTestServer(t, "chat response")
|
||||
defer srv.Close()
|
||||
|
||||
backend := NewHTTPBackend(srv.URL, "test-model")
|
||||
model := NewHTTPTextModel(backend)
|
||||
|
||||
messages := []inference.Message{
|
||||
{Role: "system", Content: "You are helpful."},
|
||||
{Role: "user", Content: "Hello"},
|
||||
}
|
||||
|
||||
var collected []inference.Token
|
||||
for tok := range model.Chat(context.Background(), messages) {
|
||||
collected = append(collected, tok)
|
||||
}
|
||||
|
||||
require.Len(t, collected, 1)
|
||||
assert.Equal(t, "chat response", collected[0].Text)
|
||||
assert.NoError(t, model.Err())
|
||||
}
|
||||
|
||||
func TestHTTPTextModel_Generate_Error_Bad(t *testing.T) {
|
||||
srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
||||
w.WriteHeader(http.StatusBadRequest)
|
||||
w.Write([]byte("invalid request"))
|
||||
}))
|
||||
defer srv.Close()
|
||||
|
||||
backend := NewHTTPBackend(srv.URL, "test-model")
|
||||
model := NewHTTPTextModel(backend)
|
||||
|
||||
var collected []inference.Token
|
||||
for tok := range model.Generate(context.Background(), "bad prompt") {
|
||||
collected = append(collected, tok)
|
||||
}
|
||||
|
||||
assert.Empty(t, collected, "no tokens should be yielded on error")
|
||||
assert.Error(t, model.Err())
|
||||
assert.Contains(t, model.Err().Error(), "400")
|
||||
}
|
||||
|
||||
func TestHTTPTextModel_Chat_Error_Bad(t *testing.T) {
|
||||
srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
||||
w.WriteHeader(http.StatusBadRequest)
|
||||
w.Write([]byte("bad chat"))
|
||||
}))
|
||||
defer srv.Close()
|
||||
|
||||
backend := NewHTTPBackend(srv.URL, "test-model")
|
||||
model := NewHTTPTextModel(backend)
|
||||
|
||||
messages := []inference.Message{{Role: "user", Content: "test"}}
|
||||
var collected []inference.Token
|
||||
for tok := range model.Chat(context.Background(), messages) {
|
||||
collected = append(collected, tok)
|
||||
}
|
||||
|
||||
assert.Empty(t, collected)
|
||||
assert.Error(t, model.Err())
|
||||
}
|
||||
|
||||
func TestHTTPTextModel_Classify_Bad(t *testing.T) {
|
||||
backend := NewHTTPBackend("http://localhost", "test-model")
|
||||
model := NewHTTPTextModel(backend)
|
||||
|
||||
results, err := model.Classify(context.Background(), []string{"test"})
|
||||
assert.Nil(t, results)
|
||||
assert.Error(t, err)
|
||||
assert.Contains(t, err.Error(), "classify not supported")
|
||||
}
|
||||
|
||||
func TestHTTPTextModel_BatchGenerate_Good(t *testing.T) {
|
||||
srv := newTestServerMulti(t)
|
||||
defer srv.Close()
|
||||
|
||||
backend := NewHTTPBackend(srv.URL, "test-model")
|
||||
model := NewHTTPTextModel(backend)
|
||||
|
||||
prompts := []string{"alpha", "beta", "gamma"}
|
||||
results, err := model.BatchGenerate(context.Background(), prompts)
|
||||
require.NoError(t, err)
|
||||
require.Len(t, results, 3)
|
||||
|
||||
assert.Equal(t, "reply:alpha", results[0].Tokens[0].Text)
|
||||
assert.NoError(t, results[0].Err)
|
||||
|
||||
assert.Equal(t, "reply:beta", results[1].Tokens[0].Text)
|
||||
assert.NoError(t, results[1].Err)
|
||||
|
||||
assert.Equal(t, "reply:gamma", results[2].Tokens[0].Text)
|
||||
assert.NoError(t, results[2].Err)
|
||||
}
|
||||
|
||||
func TestHTTPTextModel_BatchGenerate_PartialError_Bad(t *testing.T) {
|
||||
callCount := 0
|
||||
srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
||||
callCount++
|
||||
if callCount == 2 {
|
||||
w.WriteHeader(http.StatusBadRequest)
|
||||
w.Write([]byte("error on second"))
|
||||
return
|
||||
}
|
||||
resp := chatResponse{
|
||||
Choices: []chatChoice{{Message: Message{Role: "assistant", Content: "ok"}}},
|
||||
}
|
||||
json.NewEncoder(w).Encode(resp)
|
||||
}))
|
||||
defer srv.Close()
|
||||
|
||||
backend := NewHTTPBackend(srv.URL, "test-model")
|
||||
model := NewHTTPTextModel(backend)
|
||||
|
||||
results, err := model.BatchGenerate(context.Background(), []string{"a", "b", "c"})
|
||||
require.NoError(t, err) // BatchGenerate itself doesn't fail.
|
||||
require.Len(t, results, 3)
|
||||
|
||||
assert.Len(t, results[0].Tokens, 1)
|
||||
assert.NoError(t, results[0].Err)
|
||||
|
||||
assert.Empty(t, results[1].Tokens)
|
||||
assert.Error(t, results[1].Err, "second prompt should have an error")
|
||||
|
||||
assert.Len(t, results[2].Tokens, 1)
|
||||
assert.NoError(t, results[2].Err)
|
||||
}
|
||||
|
||||
func TestHTTPTextModel_ModelType_Good(t *testing.T) {
|
||||
backend := NewHTTPBackend("http://localhost", "gpt-4o")
|
||||
model := NewHTTPTextModel(backend)
|
||||
assert.Equal(t, "gpt-4o", model.ModelType())
|
||||
}
|
||||
|
||||
func TestHTTPTextModel_ModelType_Empty_Good(t *testing.T) {
|
||||
backend := NewHTTPBackend("http://localhost", "")
|
||||
model := NewHTTPTextModel(backend)
|
||||
assert.Equal(t, "http", model.ModelType())
|
||||
}
|
||||
|
||||
func TestHTTPTextModel_Info_Good(t *testing.T) {
|
||||
backend := NewHTTPBackend("http://localhost", "test")
|
||||
model := NewHTTPTextModel(backend)
|
||||
info := model.Info()
|
||||
assert.Equal(t, "http", info.Architecture)
|
||||
}
|
||||
|
||||
func TestHTTPTextModel_Metrics_Good(t *testing.T) {
|
||||
backend := NewHTTPBackend("http://localhost", "test")
|
||||
model := NewHTTPTextModel(backend)
|
||||
metrics := model.Metrics()
|
||||
assert.Equal(t, inference.GenerateMetrics{}, metrics)
|
||||
}
|
||||
|
||||
func TestHTTPTextModel_Err_ClearedOnSuccess_Good(t *testing.T) {
|
||||
// First request fails.
|
||||
callCount := 0
|
||||
srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
||||
callCount++
|
||||
if callCount == 1 {
|
||||
w.WriteHeader(http.StatusBadRequest)
|
||||
w.Write([]byte("fail"))
|
||||
return
|
||||
}
|
||||
resp := chatResponse{
|
||||
Choices: []chatChoice{{Message: Message{Role: "assistant", Content: "ok"}}},
|
||||
}
|
||||
json.NewEncoder(w).Encode(resp)
|
||||
}))
|
||||
defer srv.Close()
|
||||
|
||||
backend := NewHTTPBackend(srv.URL, "test-model")
|
||||
model := NewHTTPTextModel(backend)
|
||||
|
||||
// First call: error.
|
||||
for range model.Generate(context.Background(), "fail") {
|
||||
}
|
||||
assert.Error(t, model.Err())
|
||||
|
||||
// Second call: success — error should be cleared.
|
||||
for range model.Generate(context.Background(), "ok") {
|
||||
}
|
||||
assert.NoError(t, model.Err())
|
||||
}
|
||||
|
||||
func TestHTTPTextModel_Close_Good(t *testing.T) {
|
||||
backend := NewHTTPBackend("http://localhost", "test")
|
||||
model := NewHTTPTextModel(backend)
|
||||
assert.NoError(t, model.Close())
|
||||
}
|
||||
|
||||
func TestLlamaTextModel_ModelType_Good(t *testing.T) {
|
||||
// LlamaBackend requires a process.Service but we only test ModelType here.
|
||||
llama := &LlamaBackend{
|
||||
http: NewHTTPBackend("http://127.0.0.1:18090", ""),
|
||||
}
|
||||
model := NewLlamaTextModel(llama)
|
||||
assert.Equal(t, "llama", model.ModelType())
|
||||
}
|
||||
|
||||
func TestLlamaTextModel_Close_Good(t *testing.T) {
|
||||
// LlamaBackend with no procID — Stop() is a no-op.
|
||||
llama := &LlamaBackend{
|
||||
http: NewHTTPBackend("http://127.0.0.1:18090", ""),
|
||||
}
|
||||
model := NewLlamaTextModel(llama)
|
||||
assert.NoError(t, model.Close())
|
||||
}
|
||||
Loading…
Add table
Reference in a new issue