Maofeng
b63cf8c9eb
- define versioned service and clock WIT contracts\n- enforce import allowlists, fuel, epoch, memory, I/O, and mailbox limits\n- keep one Store and Component Instance resident per serial Actor\n- add echo, counter, fault, spin, and capability probe components\n- cover lifecycle, concurrency, sandbox, and fault recovery behavior
29 lines
812 B
Rust
29 lines
812 B
Rust
use core::sync::atomic::{AtomicU64, Ordering};
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mod bindings {
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wit_bindgen::generate!({
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path: "wit",
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world: "counter-component",
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});
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}
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static COUNTER: AtomicU64 = AtomicU64::new(0);
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struct Counter;
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impl bindings::Guest for Counter {
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fn init(_config: Vec<u8>) -> Result<(), bindings::ServiceError> {
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// Calls are serialized by the host Actor, so this component intentionally
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// uses one mutable global to make resident memory observable in tests.
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COUNTER.store(0, Ordering::Relaxed);
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Ok(())
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}
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fn invoke(_input: Vec<u8>) -> Result<Vec<u8>, bindings::ServiceError> {
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let next = COUNTER.fetch_add(1, Ordering::Relaxed).wrapping_add(1);
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Ok(next.to_le_bytes().to_vec())
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}
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}
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bindings::export!(Counter with_types_in bindings);
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