feat: queue infra

ferri-main/src/ap/mod.rs

@@ -12,6 +12,9 @@ pub use user::*;
 mod post;
 pub use post::*;
 
+mod request_queue;
+pub use request_queue::*;
+
 pub const AS_CONTEXT: &str = "https://www.w3.org/ns/activitystreams";
 
 pub fn new_id() -> String {

ferri-main/src/ap/request_queue.rs

@@ -0,0 +1,56 @@
+use std::sync::mpsc;
+use std::thread;
+use tracing::{debug, info, span, Level};
+
+#[derive(Debug)]
+pub enum QueueMessage {
+    Heartbeat
+}
+
+pub struct RequestQueue {
+    name: &'static str,
+    send: mpsc::Sender<QueueMessage>,
+    recv: mpsc::Receiver<QueueMessage>
+}
+
+#[derive(Clone)]
+pub struct QueueHandle {
+    send: mpsc::Sender<QueueMessage>
+}
+
+impl QueueHandle {
+    pub fn send(&self, msg: QueueMessage) {
+        self.send.send(msg).unwrap();
+    }
+}
+
+impl RequestQueue {
+    pub fn new(name: &'static str) -> Self {
+        let (send, recv) = mpsc::channel();
+        Self {
+            name,
+            send,
+            recv
+        }
+    }
+
+    pub fn spawn(self) -> QueueHandle {
+        info!("starting up queue '{}'", self.name);
+        
+        thread::spawn(move || {
+            info!("queue '{}' up", self.name);
+            let recv = self.recv;
+            
+            while let Ok(req) = recv.recv() {
+                let s = span!(Level::INFO, "queue", queue_name = self.name);
+                let _enter = s.enter();
+                
+                info!(?req, "got a message into the queue");
+                
+                drop(_enter);
+            }
+        });
+        
+        QueueHandle { send: self.send }
+    }
+}