sl4f_lib/server/
sl4f_executor.rs

1// Copyright 2018 The Fuchsia Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5use anyhow::Error;
6use futures::StreamExt;
7use log::*;
8use serde_json::Value;
9use std::sync::Arc;
10
11// Sl4f related inclusions
12use crate::common_utils::error::Sl4fError;
13use crate::server::constants::CONCURRENT_REQ_LIMIT;
14use crate::server::sl4f::Sl4f;
15use crate::server::sl4f_types::{AsyncCommandRequest, AsyncRequest, AsyncResponse, MethodId};
16
17pub async fn run_fidl_loop(sl4f: Arc<Sl4f>, receiver: async_channel::Receiver<AsyncRequest>) {
18    let handler = move |request| handle_request(Arc::clone(&sl4f), request);
19
20    receiver.for_each_concurrent(CONCURRENT_REQ_LIMIT, handler).await
21}
22
23async fn handle_request(sl4f: Arc<Sl4f>, request: AsyncRequest) {
24    match request {
25        AsyncRequest::Cleanup(done) => {
26            // Cleanup all resources associated with sl4f and notify the blocked request when done.
27            sl4f.cleanup().await;
28            sl4f.print().await;
29            done.send(()).unwrap();
30        }
31        AsyncRequest::Command(AsyncCommandRequest { tx, method_id, params }) => {
32            info!(tag = "run_fidl_loop", tx:?, method_id:?, params:?; "Received synchronous request");
33            match method_to_fidl(method_id, params, Arc::clone(&sl4f)).await {
34                Ok(response) => {
35                    let async_response = AsyncResponse::new(Ok(response));
36
37                    // Ignore any tx sending errors since there is not a recovery path.  The
38                    // connection to the test server may be broken.
39                    let _ = tx.send(async_response);
40                }
41                Err(err) => {
42                    error!(err:?; "Error returned from calling method_to_fidl");
43                    let async_response = AsyncResponse::new(Err(err));
44
45                    // Ignore any tx sending errors since there is not a recovery path.  The
46                    // connection to the test server may be broken.
47                    let _ = tx.send(async_response);
48                }
49            };
50        }
51    }
52}
53
54async fn method_to_fidl(method_id: MethodId, args: Value, sl4f: Arc<Sl4f>) -> Result<Value, Error> {
55    if let Some(facade) = sl4f.get_facade(&method_id.facade) {
56        facade.handle_request(method_id.method, args).await
57    } else if sl4f.has_proxy_facade(&method_id.facade) {
58        sl4f.handle_proxy_request(method_id.facade, method_id.method, args).await
59    } else {
60        Err(Sl4fError::new(&format!("Invalid FIDL method type {:?}", &method_id.facade)).into())
61    }
62}
sl4f_lib/server/sl4f_executor.rs

sl4f_lib/server/
sl4f_executor.rs
