atomic_actors/
atomic_actors.rs

1//! Atomic Hop: one [`byteflow::Value::Message`] per request/reply hop.
2//!
3//! This is the runnable counterpart of `samples::atomic_request_reply` and
4//! `docs/atomic-hop.md`. It wires the std native table (needed for
5//! `make_msg` / `msg_*` / `print`) and joins until the client returns
6//! payload `42`.
7//!
8//! ```text
9//! cargo run -p byteflow-actors --example atomic_actors
10//!
11//! # scheduler stderr (spawn/send/recv/finish) — separate from print's stdout
12//! $env:BYTEFLOW_LOG="info"
13//! cargo run -p byteflow-actors --example atomic_actors
14//! ```
15//!
16//! Failures from `Runtime::…` / `spawn` are printed and exit non-zero —
17//! matching the fail-closed host API (no `.expect` on the happy path).
18
19use byteflow::{samples, std_native_table, FlowOutcome, Runtime, RuntimeConfig, Value};
20
21fn main() {
22    let chunk = samples::atomic_request_reply();
23    let rt = match Runtime::with_natives_and_config(
24        chunk,
25        std_native_table(),
26        RuntimeConfig {
27            workers: 2,
28            quantum: 10_000,
29            mailbox: byteflow::MailboxConfig::DEFAULT,
30            ..Default::default()
31        },
32    ) {
33        Ok(rt) => rt,
34        Err(e) => {
35            eprintln!("runtime: {e}");
36            std::process::exit(1);
37        }
38    };
39    let Some(main) = rt.function_index("main") else {
40        eprintln!("missing main");
41        std::process::exit(1);
42    };
43    let handle = match rt.spawn(main, &[]) {
44        Ok(h) => h,
45        Err(e) => {
46            eprintln!("spawn: {e}");
47            std::process::exit(1);
48        }
49    };
50    let outcome = handle.join();
51    let metrics = rt.metrics();
52    rt.shutdown();
53
54    match outcome {
55        FlowOutcome::Completed(Value::Int(42)) => {
56            println!("atomic request-reply ok: payload=42");
57            println!("{metrics}");
58        }
59        other => {
60            eprintln!("unexpected {other:?}");
61            std::process::exit(1);
62        }
63    }
64}
atomic_actors/atomic_actors.rs

atomic_actors/
atomic_actors.rs
