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        },
31    ) {
32        Ok(rt) => rt,
33        Err(e) => {
34            eprintln!("runtime: {e}");
35            std::process::exit(1);
36        }
37    };
38    let Some(main) = rt.function_index("main") else {
39        eprintln!("missing main");
40        std::process::exit(1);
41    };
42    let handle = match rt.spawn(main, &[]) {
43        Ok(h) => h,
44        Err(e) => {
45            eprintln!("spawn: {e}");
46            std::process::exit(1);
47        }
48    };
49    let outcome = handle.join();
50    let metrics = rt.metrics();
51    rt.shutdown();
52
53    match outcome {
54        FlowOutcome::Completed(Value::Int(42)) => {
55            println!("atomic request-reply ok: payload=42");
56            println!("{metrics}");
57        }
58        other => {
59            eprintln!("unexpected {other:?}");
60            std::process::exit(1);
61        }
62    }
63}
atomic_actors/atomic_actors.rs

atomic_actors/
atomic_actors.rs
