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src/tools.rs: Add AsAyn Trait

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This commit is contained in:
Dietmar Maurer 2019-05-08 11:05:38 +02:00
parent 090ac9f79a
commit 2edc341b29
2 changed files with 13 additions and 1 deletions
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2
src/api_schema/router.rs
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@ -15,7 +15,7 @@ use super::api_handler::*;
pub type BoxFut = Box<Future<Item = Response<Body>, Error = failure::Error> + Send>;
/// Abstract Interface for API methods to interact with the environment
pub trait RpcEnvironment {
pub trait RpcEnvironment: std::any::Any + crate::tools::AsAny + Send {
/// Use this to pass additional result data. It is up to the environment
/// how the data is used.

12
src/tools.rs
View File

@ -13,6 +13,7 @@ use std::path::Path;
use std::io::Read;
use std::io::ErrorKind;
use std::time::Duration;
use std::any::Any;
use std::os::unix::io::{AsRawFd, FromRawFd, IntoRawFd, RawFd};
@ -711,3 +712,14 @@ pub fn pipe() -> Result<(Fd, Fd), Error> {
let (pin, pout) = nix::unistd::pipe2(nix::fcntl::OFlag::O_CLOEXEC)?;
Ok((Fd(pin), Fd(pout)))
}
/// An easy way to convert types to Any
///
/// Mostly useful to downcast trait objects (see RpcEnvironment).
pub trait AsAny {
fn as_any(&self) -> &Any;
}
impl<T: Any> AsAny for T {
fn as_any(&self) -> &Any { self }
}