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path: root/src/zen/cmds/hub_cmd.cpp
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* Zen CLI common server interface (#920)Stefan Boberg2026-04-201-31/+12
| | | | | | | | | | | | | | | | | | Introduces a common `ZenServiceClient` RAII wrapper for zen CLI commands that interact with a zenserver instance. CLI operations (admin, builds, cache, exec, hub, info, projectstore, trace, ui, version, vfs, workspaces) automatically register sessions so they become visible in the server's session list, and forward log output to the server's session log endpoint. All session HTTP I/O (announce, remove, log batches) runs on a single background worker thread, so CLI startup and shutdown never block on server availability. ### Key changes - **`ZenServiceClient`** — new RAII class that wraps host resolution, HTTP client creation, and session lifecycle (register on connect, remove on exit). Replaces ad-hoc boilerplate across all command files that talk to a server, including the new `trace` subcommands (`start`, `stop`, `status`). - **Async session I/O** — `SessionsServiceClient` now owns a single worker thread and command queue. `Announce()`, `Remove()`, and `UpdateMetadata()` enqueue commands and return immediately. The worker creates one `HttpClient` with a 5-second total timeout, bounding any individual request. Eliminates main-thread stalls when the server is unreachable. - **Session log forwarding** — `SessionLogSink` is a thin enqueuer that posts log messages to the same worker queue (no separate thread or HTTP client). Log levels are serialized as integers; the server-side ingest handles both string and integer formats for backwards compatibility, with bounds checking on integer values. - **Build & projectstore session registration** — Long-running `builds` and projectstore cache (oplog-download) connections register sessions too, making them visible alongside regular CLI command sessions. ### Cleanup - Extract `SetupCacheSession` helper on `StorageInstance` to reduce duplication. - Remove unused `HttpClient` reference in ui command.
* zen hub command (#877)Dan Engelbrecht2026-03-211-0/+440
- Feature: Added `zen hub` command for managing a hub server and its provisioned module instances: - `zen hub up` - Start a hub server (equivalent to `zen up` in hub mode) - `zen hub down` - Shut down a hub server - `zen hub provision <moduleid>` - Provision a storage server instance for a module - `zen hub deprovision <moduleid>` - Deprovision a storage server instance - `zen hub hibernate <moduleid>` - Hibernate a provisioned instance (shut down, data preserved) - `zen hub wake <moduleid>` - Wake a hibernated instance - `zen hub status [moduleid]` - Show state of all instances or a specific module - Feature: Added new hub HTTP endpoints for instance lifecycle management: - `POST /hub/modules/{moduleid}/hibernate` - Hibernate the instance for the given module - `POST /hub/modules/{moduleid}/wake` - Wake a hibernated instance for the given module - Improvement: `zen up` refactored to use shared `StartupZenServer`/`ShutdownZenServer` helpers (also used by `zen hub up`/`zen hub down`) - Bugfix: Fixed shutdown event not being cleared after the server process exits in `ZenServerInstance::Shutdown()`, which could cause stale state on reuse