172 lines
8.7 KiB
Markdown
172 lines
8.7 KiB
Markdown
# HttpApi migration
|
|
|
|
Plan for replacing instance Hono route implementations with Effect `HttpApi` while preserving behavior, OpenAPI, and SDK output during the transition.
|
|
|
|
## End State
|
|
|
|
- JSON route contracts and handlers live in `src/server/routes/instance/httpapi/*`.
|
|
- Route modules own their `HttpApiGroup`, schemas, handlers, and route-level middleware.
|
|
- `httpapi/server.ts` only composes groups, instance lookup, observability, and the web handler bridge.
|
|
- Hono route implementations are deleted once their `HttpApi` replacements are default, tested, and represented in the SDK/OpenAPI pipeline.
|
|
- Streaming, SSE, and websocket routes move later through Effect HTTP primitives or another explicit replacement plan; they do not need to fit `HttpApi` if `HttpApi` is the wrong abstraction.
|
|
|
|
## Current State
|
|
|
|
- `OPENCODE_EXPERIMENTAL_HTTPAPI` gates the bridge. Default behavior still uses Hono.
|
|
- The bridge mounts selected paths in `server/routes/instance/index.ts` before legacy Hono routes.
|
|
- Legacy Hono routes remain for default behavior and for `hono-openapi` SDK generation.
|
|
- `HttpApi` auth is independent of Hono auth.
|
|
- `Authorization` is attached in each route module, not centrally wrapped in `server.ts`.
|
|
- Auth supports Basic auth and the legacy `auth_token` query parameter through `HttpApiSecurity.apiKey`.
|
|
- Instance context is provided by `httpapi/server.ts` using `directory`, `workspace`, and `x-opencode-directory`.
|
|
- `Observability.layer` is provided in the Effect route layer and deduplicated through the shared `memoMap`.
|
|
|
|
## Migration Rules
|
|
|
|
- Preserve runtime behavior first. Semantic changes, new error behavior, or route shape changes need separate PRs.
|
|
- Migrate one route group, or one coherent subset of a route group, at a time.
|
|
- Reuse existing services. Do not re-architect service logic during HTTP boundary migration.
|
|
- Effect Schema owns route DTOs. Keep `.zod` only as compatibility for remaining Hono/OpenAPI surfaces.
|
|
- Regenerate the SDK after schema or OpenAPI-affecting changes and verify the diff is expected.
|
|
- Do not delete a Hono route until the SDK/OpenAPI pipeline no longer depends on its Hono `describeRoute` entry.
|
|
|
|
## Schema Notes
|
|
|
|
- Use `Schema.Struct(...).annotate({ identifier })` for named OpenAPI refs when handlers return plain objects.
|
|
- Use `Schema.Class` only when the handler returns real class instances or the constructor requirement is intentional.
|
|
- Keep nested anonymous shapes as `Schema.Struct` unless a named SDK type is useful.
|
|
- Avoid parallel hand-written Zod and Effect definitions for the same route boundary.
|
|
|
|
## Phases
|
|
|
|
### 1. Stabilize The Bridge
|
|
|
|
Before porting more routes, cover the bridge behavior that every route depends on.
|
|
|
|
- Add tests that hit the Hono-mounted `HttpApi` bridge, not just `HttpApiBuilder.layer` directly.
|
|
- Cover auth disabled, Basic auth success, `auth_token` success, missing credentials, and bad credentials.
|
|
- Cover `directory` and `x-opencode-directory` instance selection.
|
|
- Verify generated SDK output remains unchanged for non-SDK work.
|
|
- Fix or remove any implemented-but-unmounted `HttpApi` groups.
|
|
|
|
### 2. Complete The Inventory
|
|
|
|
Create a route inventory from the actual Hono registrations and classify each route.
|
|
|
|
Statuses:
|
|
|
|
- `bridged`: served through the `HttpApi` bridge when the flag is on.
|
|
- `implemented`: `HttpApi` group exists but is not mounted through Hono.
|
|
- `next`: good JSON candidate for near-term porting.
|
|
- `later`: portable, but needs schema/service cleanup first.
|
|
- `special`: SSE, websocket, streaming, or UI bridge behavior that likely needs raw Effect HTTP rather than `HttpApi`.
|
|
|
|
### 3. Finish JSON Route Parity
|
|
|
|
Port remaining JSON routes in small batches.
|
|
|
|
Good near-term candidates:
|
|
|
|
- top-level reads: `GET /path`, `GET /vcs`, `GET /vcs/diff`, `GET /command`, `GET /agent`, `GET /skill`, `GET /lsp`, `GET /formatter`
|
|
- simple mutations: `POST /instance/dispose`
|
|
- experimental JSON reads: console, tool, worktree list, resource list
|
|
- deferred JSON mutations: `PATCH /config`, project git init, workspace/worktree create/remove/reset, file search, MCP auth flows
|
|
|
|
Keep large or stateful groups for later:
|
|
|
|
- `session`
|
|
- `sync`
|
|
- process-level experimental routes
|
|
|
|
### 4. Move OpenAPI And SDK Generation
|
|
|
|
Hono routes cannot be deleted while `hono-openapi` is the source of SDK generation.
|
|
|
|
Required before route deletion:
|
|
|
|
- Generate the public OpenAPI surface from Effect `HttpApi` for ported routes.
|
|
- Keep operation IDs, schemas, status codes, and SDK type names stable unless the change is intentional.
|
|
- Compare generated SDK output against `dev` for every route group deletion.
|
|
- Remove Hono OpenAPI stubs only after Effect OpenAPI is the SDK source for those paths.
|
|
|
|
### 5. Make HttpApi Default For JSON Routes
|
|
|
|
After JSON parity and SDK generation are covered:
|
|
|
|
- Flip the bridge default for ported JSON routes.
|
|
- Keep a short-lived fallback flag for the old Hono implementation.
|
|
- Run the same tests against both the default and fallback path during rollout.
|
|
- Stop adding new Hono handlers for JSON routes once the default flips.
|
|
|
|
### 6. Delete Hono Route Implementations
|
|
|
|
Delete Hono routes group-by-group after each group meets the deletion criteria.
|
|
|
|
Deletion criteria:
|
|
|
|
- `HttpApi` route is mounted by default.
|
|
- Behavior is covered by bridge-level tests.
|
|
- OpenAPI/SDK generation comes from Effect for that path.
|
|
- SDK diff is zero or explicitly accepted.
|
|
- Legacy Hono route is no longer needed as a fallback.
|
|
|
|
After deleting a group:
|
|
|
|
- Remove its Hono route file or dead endpoints.
|
|
- Remove its `.route(...)` registration from `instance/index.ts`.
|
|
- Remove duplicate Zod-only route DTOs if Effect Schema now owns the type.
|
|
- Regenerate SDK and verify output.
|
|
|
|
### 7. Replace Special Routes
|
|
|
|
Special routes need explicit designs before Hono can disappear completely.
|
|
|
|
- `event`: SSE
|
|
- `pty`: websocket
|
|
- `tui`: UI/control bridge behavior
|
|
- streaming `session` endpoints
|
|
|
|
Use raw Effect HTTP routes where `HttpApi` does not fit. The goal is deleting Hono implementations, not forcing every transport shape through `HttpApi`.
|
|
|
|
## Current Route Status
|
|
|
|
| Area | Status | Notes |
|
|
| ------------------------ | ----------------- | ------------------------------------------------------ |
|
|
| `question` | `bridged` | `GET /question`, reply, reject |
|
|
| `permission` | `bridged` | list and reply |
|
|
| `provider` | `bridged` | list, auth, OAuth authorize/callback |
|
|
| `config` | `bridged` partial | reads only; mutation remains Hono |
|
|
| `project` | `bridged` partial | reads only; git-init remains Hono |
|
|
| `file` | `bridged` partial | find text/file/symbol, list/content/status |
|
|
| `mcp` | `bridged` partial | status only |
|
|
| `workspace` | `bridged` | list, get, enter |
|
|
| top-level instance reads | `bridged` | path, vcs, command, agent, skill, lsp, formatter |
|
|
| experimental JSON routes | `next/later` | console, tool, worktree, resource, global session list |
|
|
| `session` | `later/special` | large stateful surface plus streaming |
|
|
| `sync` | `later` | process/control side effects |
|
|
| `event` | `special` | SSE |
|
|
| `pty` | `special` | websocket |
|
|
| `tui` | `special` | UI bridge |
|
|
|
|
## Next PRs
|
|
|
|
1. Produce a generated route inventory from Hono registrations and update `Current Route Status` with exact paths.
|
|
2. Start the Effect OpenAPI/SDK generation path for already-bridged routes.
|
|
|
|
## Checklist
|
|
|
|
- [x] Add first `HttpApi` JSON route slices.
|
|
- [x] Bridge selected `HttpApi` routes into Hono behind `OPENCODE_EXPERIMENTAL_HTTPAPI`.
|
|
- [x] Reuse existing Effect services in handlers.
|
|
- [x] Provide auth, instance lookup, and observability in the Effect route layer.
|
|
- [x] Attach auth middleware in route modules.
|
|
- [x] Support `auth_token` as a query security scheme.
|
|
- [x] Add bridge-level auth and instance tests.
|
|
- [ ] Complete exact Hono route inventory.
|
|
- [x] Resolve implemented-but-unmounted route groups.
|
|
- [x] Port remaining top-level JSON reads.
|
|
- [ ] Generate SDK/OpenAPI from Effect routes.
|
|
- [ ] Flip ported JSON routes to default-on with fallback.
|
|
- [ ] Delete replaced Hono route implementations.
|
|
- [ ] Replace SSE/websocket/streaming Hono routes with non-Hono implementations.
|