jsonrpc_ipc_server/
meta.rs

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
use std::path::Path;

use crate::jsonrpc::futures::channel::mpsc;
use crate::jsonrpc::Metadata;
use crate::server_utils::session;

/// Request context
pub struct RequestContext<'a> {
	/// Session ID
	pub session_id: session::SessionId,
	/// Remote UDS endpoint
	pub endpoint_addr: &'a Path,
	/// Direct pipe sender
	pub sender: mpsc::UnboundedSender<String>,
}

/// Metadata extractor (per session)
pub trait MetaExtractor<M: Metadata>: Send + Sync + 'static {
	/// Extracts metadata from request context
	fn extract(&self, context: &RequestContext) -> M;
}

impl<M, F> MetaExtractor<M> for F
where
	M: Metadata,
	F: Fn(&RequestContext) -> M + Send + Sync + 'static,
{
	fn extract(&self, context: &RequestContext) -> M {
		(*self)(context)
	}
}

/// Noop-extractor
pub struct NoopExtractor;
impl<M: Metadata + Default> MetaExtractor<M> for NoopExtractor {
	fn extract(&self, _context: &RequestContext) -> M {
		M::default()
	}
}