53 lines
1.3 KiB
Rust
53 lines
1.3 KiB
Rust
use futures::executor::LocalPool;
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use futures::task::LocalSpawnExt;
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use r2r;
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use r2r::example_interfaces::srv::AddTwoInts;
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async fn requester_task(
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c: r2r::Client<AddTwoInts::Service>,
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) -> Result<(), Box<dyn std::error::Error>> {
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let mut x: i64 = 0;
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loop {
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let req = AddTwoInts::Request { a: 10 * x, b: x };
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let resp = c.request(&req)?.await?;
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println!("{} + {} = {}", req.a, req.b, resp.sum);
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x += 1;
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if x == 10 {
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break;
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}
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}
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Ok(())
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}
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fn main() -> Result<(), Box<dyn std::error::Error>> {
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let ctx = r2r::Context::create()?;
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let mut node = r2r::Node::create(ctx, "testnode", "")?;
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let client = node.create_client::<AddTwoInts::Service>("/add_two_ints")?;
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// wait for service to be available
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println!("waiting for service...");
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while !node.service_available(&client)? {
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std::thread::sleep(std::time::Duration::from_millis(1000));
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}
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println!("service available.");
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let mut pool = LocalPool::new();
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let spawner = pool.spawner();
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spawner.spawn_local(async move {
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match requester_task(client).await {
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Ok(()) => println!("exiting"),
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Err(e) => println!("error: {}", e),
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}
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})?;
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loop {
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node.spin_once(std::time::Duration::from_millis(100));
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pool.run_until_stalled();
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}
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}
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