feat(appd): add weft-appd skeleton crate and service unit
New crate implementing the application daemon entry point:
- crates/weft-appd/Cargo.toml: tokio (current-thread runtime), anyhow,
sd-notify, tracing dependencies
- crates/weft-appd/src/main.rs: async run() resolves IPC socket path
from WEFT_APPD_SOCKET or XDG_RUNTIME_DIR/weft/appd.sock; stubs for
AppRegistry, IpcServer, CompositorClient, RuntimeSupervisor,
CapabilityBroker, ResourceController per WEFT-OS-APPD-DESIGN.md;
sd_notify(READY=1) to be sent after IpcServer bind + CompositorClient
connect
- infra/systemd/weft-appd.service: Type=notify, Requires+After
weft-compositor.service, After servo-shell.service
Also fix two winit backend issues that were present in the working tree:
- remove spurious mut on display binding (never mutated after init)
- wrap std::env::set_var in unsafe block (required since Rust 1.80)
2026-03-11 00:13:18 +00:00
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[package]
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name = "weft-appd"
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version.workspace = true
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edition.workspace = true
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rust-version.workspace = true
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[[bin]]
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name = "weft-appd"
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path = "src/main.rs"
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[dependencies]
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anyhow = "1.0"
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sd-notify = "0.4"
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feat(appd): implement IPC server with Unix socket and MessagePack framing
Replaces the skeleton bail with a functional IPC server.
ipc.rs — transport layer:
- Request enum: LaunchApp, TerminateApp, QueryRunning, QueryAppState.
Serialized with serde MessagePack (rmp-serde, SCREAMING_SNAKE_CASE
type tag).
- Response enum: LaunchAck, AppReady, RunningApps, AppState, Error.
- AppStateKind: Starting, Running, Stopping, Stopped, NotFound.
- read_frame / write_frame: async 4-byte LE length-prefixed codec over
any AsyncRead / AsyncWrite.
main.rs — server:
- SessionRegistry: in-memory HashMap<session_id, AppStateKind> with
monotonic ID counter; launch / terminate / running_ids / state.
- run(): creates socket parent directory, removes stale socket, binds
UnixListener, sends sd_notify READY=1, then accept-loops with
ctrl-c / SIGTERM shutdown. Cleans up socket on exit.
- handle_connection(): splits stream into BufReader/BufWriter, reads
request frames, calls dispatch, writes response frames.
- dispatch(): maps Request variants to SessionRegistry operations;
returns typed Response. Wasmtime spawning and compositor client
deferred to later implementation.
New deps: serde (derive), rmp-serde, tokio net/io-util/sync/rt-multi-thread.
2026-03-11 07:25:55 +00:00
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tokio = { version = "1", features = ["rt-multi-thread", "macros", "net", "io-util", "signal", "sync"] }
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serde = { version = "1", features = ["derive"] }
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rmp-serde = "1"
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feat(appd): add weft-appd skeleton crate and service unit
New crate implementing the application daemon entry point:
- crates/weft-appd/Cargo.toml: tokio (current-thread runtime), anyhow,
sd-notify, tracing dependencies
- crates/weft-appd/src/main.rs: async run() resolves IPC socket path
from WEFT_APPD_SOCKET or XDG_RUNTIME_DIR/weft/appd.sock; stubs for
AppRegistry, IpcServer, CompositorClient, RuntimeSupervisor,
CapabilityBroker, ResourceController per WEFT-OS-APPD-DESIGN.md;
sd_notify(READY=1) to be sent after IpcServer bind + CompositorClient
connect
- infra/systemd/weft-appd.service: Type=notify, Requires+After
weft-compositor.service, After servo-shell.service
Also fix two winit backend issues that were present in the working tree:
- remove spurious mut on display binding (never mutated after init)
- wrap std::env::set_var in unsafe block (required since Rust 1.80)
2026-03-11 00:13:18 +00:00
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tracing = "0.1"
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tracing-subscriber = { version = "0.3", features = ["env-filter"] }
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