update reqwest

reqwest/src/main.rs

@@ -9,24 +9,43 @@ pub async fn main() {
             return;
         },
     };
-    let mut map = HashMap::new();
-    map.insert("1", test001);
+    let mut map: HashMap<_, Box<dyn Call>> = HashMap::new();
+    map.insert("1", Box::new(T001{}) );
+    map.insert("2", Box::new(T002{}) );
 
-    let f = match map.get(a.as_str()) {
-        Some(f) => f, None => {
-            println!("{}", &format!("[ERROR] Cannot find {}", a));
+    let c = match map.get(a.as_str()) {
+        Some(c) => c, None => {
+            println!("[ERROR] Cannot find {}", a);
             return;
         },
     };
 
-    match f().await {
+    match c.call().await {
         Ok(_) => println!("[OK] Call fn ok: {}", a),
         Err(err) => println!("[ERROR] Call fn error: {}, message: {}", a, err),
     }
 }
 
-async fn test001() -> Result<(), Box<dyn std::error::Error>> {
-    let ip = reqwest::get("https://hatter.ink/ip/ip.jsonp").await?.text().await?;
-    println!("{}", ip);
-    Ok(())
+#[async_trait::async_trait]
+trait Call {
+    async fn call(&self) -> Result<(), Box<dyn std::error::Error>>;
+}
+
+struct T001();
+#[async_trait::async_trait]
+impl Call for T001 {
+    async fn call(&self) -> Result<(), Box<dyn std::error::Error>> {
+        let ip = reqwest::get("https://hatter.ink/ip/ip.jsonp").await?.text().await?;
+        println!("{}", ip);
+        Ok(())
+    }
+}
+
+struct T002();
+#[async_trait::async_trait]
+impl Call for T002 {
+    async fn call(&self) -> Result<(), Box<dyn std::error::Error>> {
+        println!("Hello World 2");
+        Ok(())
+    }
 }