sandbox/fidl/
data_router.rs

1// Copyright 2024 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 crate::fidl::router;
6use crate::{ConversionError, Data, Router, RouterResponse};
7use fidl::handle::AsHandleRef;
8use futures::TryStreamExt;
9use std::sync::Arc;
10use vfs::directory::entry::DirectoryEntry;
11use vfs::execution_scope::ExecutionScope;
12use {fidl_fuchsia_component_sandbox as fsandbox, fidl_fuchsia_io as fio};
13
14impl crate::RemotableCapability for Router<Data> {
15    fn try_into_directory_entry(
16        self,
17        scope: ExecutionScope,
18    ) -> Result<Arc<dyn DirectoryEntry>, ConversionError> {
19        Ok(self.into_directory_entry(fio::DirentType::Service, scope))
20    }
21}
22
23impl From<Router<Data>> for fsandbox::Capability {
24    fn from(router: Router<Data>) -> Self {
25        let (client_end, sender_stream) =
26            fidl::endpoints::create_request_stream::<fsandbox::DataRouterMarker>();
27        router.serve_and_register(sender_stream, client_end.get_koid().unwrap());
28        fsandbox::Capability::DataRouter(client_end)
29    }
30}
31
32impl TryFrom<RouterResponse<Data>> for fsandbox::DataRouterRouteResponse {
33    type Error = fsandbox::RouterError;
34
35    fn try_from(resp: RouterResponse<Data>) -> Result<Self, Self::Error> {
36        match resp {
37            RouterResponse::<Data>::Capability(c) => {
38                Ok(fsandbox::DataRouterRouteResponse::Data(c.into()))
39            }
40            RouterResponse::<Data>::Unavailable => {
41                Ok(fsandbox::DataRouterRouteResponse::Unavailable(fsandbox::Unit {}))
42            }
43            RouterResponse::<Data>::Debug(_) => Err(fsandbox::RouterError::NotSupported),
44        }
45    }
46}
47
48impl Router<Data> {
49    async fn serve_router(
50        self,
51        mut stream: fsandbox::DataRouterRequestStream,
52    ) -> Result<(), fidl::Error> {
53        while let Ok(Some(request)) = stream.try_next().await {
54            match request {
55                fsandbox::DataRouterRequest::Route { payload, responder } => {
56                    responder.send(router::route_from_fidl(&self, payload).await)?;
57                }
58                fsandbox::DataRouterRequest::_UnknownMethod { ordinal, .. } => {
59                    log::warn!(ordinal:%; "Received unknown DataRouter request");
60                }
61            }
62        }
63        Ok(())
64    }
65
66    /// Serves the `fuchsia.sandbox.Router` protocol and moves ourself into the registry.
67    pub fn serve_and_register(self, stream: fsandbox::DataRouterRequestStream, koid: zx::Koid) {
68        let router = self.clone();
69
70        // Move this capability into the registry.
71        crate::fidl::registry::insert(self.into(), koid, async move {
72            router.serve_router(stream).await.expect("failed to serve Router");
73        });
74    }
75}
sandbox/fidl/data_router.rs

sandbox/fidl/
data_router.rs
