feat: with monitor

Signed-off-by: kjuulh <contact@kjuulh.io>

crates/churn-agent/src/main.rs

@@ -1,7 +1,19 @@
+mod agent;
+
 use std::net::SocketAddr;
 
-use axum::{response::IntoResponse, routing::get, Router};
+use agent::AgentService;
+use anyhow::Error;
+use axum::{
+    extract::State,
+    http::StatusCode,
+    response::{IntoResponse, Response},
+    routing::{get, post},
+    Json, Router,
+};
+use churn_domain::AgentEnrollReq;
 use clap::{Parser, Subcommand};
+use serde_json::json;
 
 #[derive(Parser)]
 #[command(author, version, about, long_about = None, subcommand_required = true)]
@@ -30,6 +42,14 @@ enum Commands {
     },
 }
 
+#[derive(Clone)]
+#[derive(Default)]
+struct AppState {
+    agent: AgentService,
+}
+
+
+
 #[tokio::main]
 async fn main() -> anyhow::Result<()> {
     dotenv::dotenv().ok();
@@ -47,7 +67,10 @@ async fn handle_command(cmd: Command) -> anyhow::Result<()> {
         Some(Commands::Daemon { host }) => {
             tracing::info!("Starting churn server");
 
-            let app = Router::new().route("/ping", get(ping));
+            let app = Router::new()
+                .route("/enroll", post(enroll))
+                .route("/ping", get(ping))
+                .with_state(AppState::default());
 
             tracing::info!("churn server listening on {}", host);
             axum::Server::bind(&host)
@@ -58,14 +81,52 @@ async fn handle_command(cmd: Command) -> anyhow::Result<()> {
             Ok(())
         }
         Some(Commands::Connect {
-            host,
-            token,
-            agent_name,
+            host: _,
+            token: _,
+            agent_name: _,
         }) => todo!(),
         None => todo!(),
     }
 }
 
+enum AppError {
+    Internal(Error),
+}
+
+impl IntoResponse for AppError {
+    fn into_response(self) -> Response {
+        let (status, error_message) = match self {
+            AppError::Internal(e) => {
+                tracing::error!("failed with error: {}", e);
+
+                (
+                    StatusCode::INTERNAL_SERVER_ERROR,
+                    "failed with internal error",
+                )
+            }
+        };
+
+        let body = Json(json!({
+            "error": error_message,
+        }));
+
+        (status, body).into_response()
+    }
+}
+
 async fn ping() -> impl IntoResponse {
     "pong!"
 }
+
+async fn enroll(
+    State(state): State<AppState>,
+    Json(req): Json<AgentEnrollReq>,
+) -> Result<(), AppError> {
+    state
+        .agent
+        .enroll(&req.agent_name, &req.server, &req.lease)
+        .await
+        .map_err(AppError::Internal)?;
+
+    Ok(())
+}