From b94f8e694bf01f5dba9ce2c01f589463a3dfbc69 Mon Sep 17 00:00:00 2001
From: Toby Vincent <tobyv@tobyvin.dev>
Date: Wed, 9 Oct 2024 18:23:58 -0500
Subject: feat!: rewrite to use traits and streams

---
 src/api/services.rs | 52 +++++++++++++++++++++++++++-------------------------
 src/api/sse.rs      | 45 +++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 72 insertions(+), 25 deletions(-)
 create mode 100644 src/api/sse.rs

(limited to 'src/api')

diff --git a/src/api/services.rs b/src/api/services.rs
index 132ecb1..aeca924 100644
--- a/src/api/services.rs
+++ b/src/api/services.rs
@@ -2,48 +2,50 @@ use std::collections::HashMap;
 
 use axum::{
     extract::{Path, Query, State},
-    Json, Router,
+    routing::get,
+    Json,
 };
-use axum_extra::routing::Resource;
 use serde::{Deserialize, Serialize};
 
-use crate::{service::ServiceHandles, Error, Status};
+use crate::{AppState, Error, Status};
+
+pub fn router() -> axum::Router<AppState> {
+    axum::Router::new()
+        .route("/", get(services))
+        .route("/:name", get(service))
+}
 
 #[derive(Debug, Clone, Default, Serialize, Deserialize)]
 pub struct ServiceQuery {
     pub name: Option<String>,
-    pub state: Option<Status>,
+    pub status: Option<Status>,
 }
 
-pub fn router() -> Router<ServiceHandles> {
-    Resource::named("services").index(index).show(show).into()
+impl ServiceQuery {
+    pub fn filter(&self, value: &(String, Status)) -> bool {
+        !self.name.as_ref().is_some_and(|n| *n != value.0)
+            && !self.status.as_ref().is_some_and(|s| *s != value.1)
+    }
 }
 
-pub async fn index(
+pub async fn services(
     Query(query): Query<ServiceQuery>,
-    State(services): State<ServiceHandles>,
+    State(state): State<AppState>,
 ) -> Json<HashMap<String, Status>> {
-    let map = match query.name {
-        Some(n) => services
-            .iter()
-            .filter(|(name, _)| n == **name)
-            .map(|(name, srv)| (name.clone(), srv.status()))
+    Json(
+        state
+            .statuses()
+            .into_iter()
+            .filter(|item| query.filter(item))
             .collect(),
-        None => services
-            .iter()
-            .map(|(name, srv)| (name.clone(), srv.status()))
-            .collect(),
-    };
-
-    Json(map)
+    )
 }
 
-pub async fn show(
+pub async fn service(
     Path(name): Path<String>,
-    State(services): State<ServiceHandles>,
+    State(state): State<AppState>,
 ) -> Result<Status, Error> {
-    services
-        .get(&name)
-        .map(|s| s.status())
+    state
+        .status(&name)
         .ok_or_else(|| Error::ServiceNotFound(name))
 }
diff --git a/src/api/sse.rs b/src/api/sse.rs
new file mode 100644
index 0000000..5d913bb
--- /dev/null
+++ b/src/api/sse.rs
@@ -0,0 +1,45 @@
+use std::convert::Infallible;
+
+use axum::{
+    extract::{Path, State},
+    response::{
+        sse::{Event, KeepAlive},
+        Sse,
+    },
+    routing::get,
+    Router,
+};
+use futures::Stream;
+use tokio_stream::StreamExt;
+
+use crate::{AppState, Error};
+
+pub fn router() -> Router<AppState> {
+    axum::Router::new()
+        .route("/", get(events))
+        .route("/:name", get(service_events))
+}
+
+pub async fn events(
+    State(state): State<AppState>,
+) -> Result<Sse<impl Stream<Item = Result<Event, Error>>>, Error> {
+    let stream = state.streams().map(|(name, status)| {
+        let data = serde_json::to_string(&status)?;
+        Ok(Event::default().event(name).data(data))
+    });
+
+    Ok(Sse::new(stream).keep_alive(KeepAlive::default()))
+}
+
+pub async fn service_events(
+    Path(name): Path<String>,
+    State(state): State<AppState>,
+) -> Result<Sse<impl Stream<Item = Result<Event, Infallible>>>, Error> {
+    let stream = state
+        .stream(&name)
+        .ok_or_else(|| Error::ServiceNotFound(name))?
+        .map(Event::from)
+        .map(Ok);
+
+    Ok(Sse::new(stream).keep_alive(KeepAlive::default()))
+}
-- 
cgit v1.2.3-70-g09d2