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donglora/vendor/maybe-async-cfg/examples/service_client.rs
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swaitsandClaude Opus 4.6 3102fc747a feat: add display UI with splash screen, dashboard, and RSSI sparkline
Implement full SSD1306 OLED display support:
- Splash screen on boot (1.5s) with project name, version, board
- Dashboard showing radio state, config, counters, RSSI/SNR
- RSSI history sparkline (64-sample ring buffer, 2px-wide bars)
- DisplayOn/DisplayOff host commands routed via dedicated channel
- Pure render functions against generic DrawTarget (no hardware coupling)
- Display on/off control bypasses radio task entirely

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-03-29 20:42:54 -06:00

114 lines
3.9 KiB
Rust

#![allow(dead_code, unused_variables)]
maybe_async_cfg::content!{
#![maybe_async_cfg::default(
idents(
InnerClient,
ServiceClient,
)
)]
type Response = String;
type Url = &'static str;
type Method = String;
/// To use `maybe-async-cfg`, we must know which block of codes is only used on
/// blocking implementation, and which on async. These two implementation should
/// share the same API except for async/await keywords.
/// This will generate two traits: `InnerClientSync` and `InnerClientAsync`
#[maybe_async_cfg::maybe(
sync(feature = "is_sync"),
async(feature = "is_async", async_trait::async_trait),
)]
trait InnerClient {
async fn request(method: Method, url: Url, data: String) -> Response;
#[inline]
async fn post(url: Url, data: String) -> Response {
Self::request(String::from("post"), url, data).await
}
#[inline]
async fn delete(url: Url, data: String) -> Response {
Self::request(String::from("delete"), url, data).await
}
}
/// This will generate a `ServiceClientSync`, which will implement
/// `InnerClientSync`, and a `ServiceClientAsync`, which will implement
/// `InnerClientAsync`.
///
/// If we had a single `ServiceClient` which implemented both `InnerClientSync`
/// and `InnerClientAsync`, calls to methods like `request` would be ambiguous
/// when both async and sync were enabled.
#[maybe_async_cfg::maybe(sync(feature = "is_sync"), async(feature = "is_async"))]
pub struct ServiceClient;
/// Synchronous implementation.
#[maybe_async_cfg::maybe(sync(feature = "is_sync"), async(feature = "is_async"))]
#[maybe_async_cfg::only_if(sync)]
impl InnerClient for ServiceClient {
fn request(method: Method, url: Url, data: String) -> Response {
// your implementation for sync, like use `reqwest::blocking` to send
// the request
String::from("pretend we have a response")
}
}
/// Asynchronous implementation only.
#[maybe_async_cfg::maybe(
sync(feature = "is_sync"),
async(feature = "is_async", async_trait::async_trait),
)]
#[maybe_async_cfg::only_if(async)]
impl InnerClient for ServiceClient {
async fn request(method: Method, url: Url, data: String) -> Response {
// your implementation for async, like use `reqwest::client` or
// `async_std` to send the request
String::from("pretend we have a response")
}
}
/// Code of upstream API are almost the same for sync and async, except for
/// async/await keyword. This will generate the same `impl` but for both
/// `ServiceClientAsync` and `ServiceClientSync`.
#[maybe_async_cfg::maybe(sync(feature = "is_sync"), async(feature = "is_async"))]
impl ServiceClient {
async fn create_bucket(name: String) -> Response {
Self::post("http://correct_url4create", String::from("my_bucket")).await
// When `is_sync` is toggle on, this block will compiles to:
// Self::post("http://correct_url4create", String::from("my_bucket"))
}
async fn delete_bucket(name: String) -> Response {
Self::delete("http://correct_url4delete", String::from("my_bucket")).await
}
// and another thousands of functions that interact with service side
}
#[maybe_async_cfg::maybe(sync(feature = "is_sync"), async(feature = "is_async"))]
#[maybe_async_cfg::only_if(sync)]
fn run_sync() {
println!("sync impl running");
let _ = ServiceClientSync::create_bucket("bucket".to_owned());
}
#[maybe_async_cfg::maybe(sync(feature = "is_sync"), async(feature = "is_async"))]
#[maybe_async_cfg::only_if(async)]
async fn run_async() {
println!("async impl running");
let _ = ServiceClientAsync::create_bucket("bucket".to_owned()).await;
}
#[tokio::main]
async fn main() {
#[cfg(feature = "is_sync")]
run_sync();
#[cfg(feature = "is_async")]
run_async().await;
}
}