From 028940fe3e0a87cdc421a6d07f1ecfb6c208b9d0 Mon Sep 17 00:00:00 2001
From: hozan23 <hozan23@karyontech.net>
Date: Tue, 21 May 2024 02:20:45 +0200
Subject: jsonrpc: support pubsub

---
 jsonrpc/examples/pubsub_client.rs         | 47 +++++++++++++++++++++
 jsonrpc/examples/pubsub_server.rs         | 69 +++++++++++++++++++++++++++++++
 jsonrpc/examples/server.rs                |  4 +-
 jsonrpc/examples/tokio_server/Cargo.lock  |  1 +
 jsonrpc/examples/tokio_server/src/main.rs |  4 +-
 5 files changed, 123 insertions(+), 2 deletions(-)
 create mode 100644 jsonrpc/examples/pubsub_client.rs
 create mode 100644 jsonrpc/examples/pubsub_server.rs

(limited to 'jsonrpc/examples')

diff --git a/jsonrpc/examples/pubsub_client.rs b/jsonrpc/examples/pubsub_client.rs
new file mode 100644
index 0000000..fee2a26
--- /dev/null
+++ b/jsonrpc/examples/pubsub_client.rs
@@ -0,0 +1,47 @@
+use serde::{Deserialize, Serialize};
+use smol::stream::StreamExt;
+
+use karyon_jsonrpc::Client;
+
+#[derive(Deserialize, Serialize, Debug)]
+struct Pong {}
+
+fn main() {
+    env_logger::init();
+    smol::future::block_on(async {
+        let client = Client::builder("tcp://127.0.0.1:6000")
+            .expect("Create client builder")
+            .build()
+            .await
+            .expect("Build a client");
+
+        let result: Pong = client
+            .call("Calc.ping", ())
+            .await
+            .expect("Send ping request");
+
+        println!("receive pong msg: {:?}", result);
+
+        let (sub_id, sub) = client
+            .subscribe("Calc.log_subscribe", ())
+            .await
+            .expect("Subscribe to log_subscribe method");
+
+        smol::spawn(async move {
+            sub.for_each(|m| {
+                println!("Receive new notification: {m}");
+            })
+            .await
+        })
+        .detach();
+
+        smol::Timer::after(std::time::Duration::from_secs(5)).await;
+
+        client
+            .unsubscribe("Calc.log_unsubscribe", sub_id)
+            .await
+            .expect("Unsubscribe from log_unsubscirbe method");
+
+        smol::Timer::after(std::time::Duration::from_secs(2)).await;
+    });
+}
diff --git a/jsonrpc/examples/pubsub_server.rs b/jsonrpc/examples/pubsub_server.rs
new file mode 100644
index 0000000..739e6d5
--- /dev/null
+++ b/jsonrpc/examples/pubsub_server.rs
@@ -0,0 +1,69 @@
+use std::sync::Arc;
+
+use serde::{Deserialize, Serialize};
+use serde_json::Value;
+
+use karyon_jsonrpc::{rpc_impl, rpc_pubsub_impl, ArcChannel, Error, Server, SubscriptionID};
+
+struct Calc {}
+
+#[derive(Deserialize, Serialize)]
+struct Req {
+    x: u32,
+    y: u32,
+}
+
+#[derive(Deserialize, Serialize)]
+struct Pong {}
+
+#[rpc_impl]
+impl Calc {
+    async fn ping(&self, _params: Value) -> Result<Value, Error> {
+        Ok(serde_json::json!(Pong {}))
+    }
+}
+
+#[rpc_pubsub_impl]
+impl Calc {
+    async fn log_subscribe(&self, chan: ArcChannel, _params: Value) -> Result<Value, Error> {
+        let sub = chan.new_subscription().await;
+        let sub_id = sub.id.clone();
+        smol::spawn(async move {
+            loop {
+                smol::Timer::after(std::time::Duration::from_secs(1)).await;
+                if let Err(err) = sub.notify(serde_json::json!("Hello")).await {
+                    println!("Error send notification {err}");
+                    break;
+                }
+            }
+        })
+        .detach();
+
+        Ok(serde_json::json!(sub_id))
+    }
+
+    async fn log_unsubscribe(&self, chan: ArcChannel, params: Value) -> Result<Value, Error> {
+        let sub_id: SubscriptionID = serde_json::from_value(params)?;
+        chan.remove_subscription(&sub_id).await;
+        Ok(serde_json::json!(true))
+    }
+}
+
+fn main() {
+    env_logger::init();
+    smol::block_on(async {
+        let calc = Arc::new(Calc {});
+
+        // Creates a new server
+        let server = Server::builder("tcp://127.0.0.1:6000")
+            .expect("Create a new server builder")
+            .service(calc.clone())
+            .pubsub_service(calc)
+            .build()
+            .await
+            .expect("Build a new server");
+
+        // Start the server
+        server.start().await.expect("Start the server");
+    });
+}
diff --git a/jsonrpc/examples/server.rs b/jsonrpc/examples/server.rs
index 841e276..5b951cd 100644
--- a/jsonrpc/examples/server.rs
+++ b/jsonrpc/examples/server.rs
@@ -1,3 +1,5 @@
+use std::sync::Arc;
+
 use serde::{Deserialize, Serialize};
 use serde_json::Value;
 
@@ -48,7 +50,7 @@ fn main() {
         // Creates a new server
         let server = Server::builder("tcp://127.0.0.1:6000")
             .expect("Create a new server builder")
-            .service(calc)
+            .service(Arc::new(calc))
             .build()
             .await
             .expect("start a new server");
diff --git a/jsonrpc/examples/tokio_server/Cargo.lock b/jsonrpc/examples/tokio_server/Cargo.lock
index a7fdb0b..ab39fcd 100644
--- a/jsonrpc/examples/tokio_server/Cargo.lock
+++ b/jsonrpc/examples/tokio_server/Cargo.lock
@@ -681,6 +681,7 @@ dependencies = [
 name = "karyon_jsonrpc"
 version = "0.1.0"
 dependencies = [
+ "async-channel",
  "async-trait",
  "async-tungstenite",
  "karyon_core",
diff --git a/jsonrpc/examples/tokio_server/src/main.rs b/jsonrpc/examples/tokio_server/src/main.rs
index 978c90a..ce77cd3 100644
--- a/jsonrpc/examples/tokio_server/src/main.rs
+++ b/jsonrpc/examples/tokio_server/src/main.rs
@@ -1,3 +1,5 @@
+use std::sync::Arc;
+
 use serde::{Deserialize, Serialize};
 use serde_json::Value;
 
@@ -48,7 +50,7 @@ async fn main() {
     // Creates a new server
     let server = Server::builder("tcp://127.0.0.1:6000")
         .expect("Create a new server builder")
-        .service(calc)
+        .service(Arc::new(calc))
         .build()
         .await
         .expect("start a new server");
-- 
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