From 6776ea7b5af4c544da2e34e69cbaaa756d41c862 Mon Sep 17 00:00:00 2001
From: Hatter Jiang <jht5945@gmail.com>
Date: Sun, 3 May 2020 13:12:30 +0800
Subject: [PATCH] update reqwest

---
 reqwest/Cargo.lock  | 12 ++++++++++++
 reqwest/Cargo.toml  |  1 +
 reqwest/src/main.rs | 39 +++++++++++++++++++++++++++++----------
 3 files changed, 42 insertions(+), 10 deletions(-)

diff --git a/reqwest/Cargo.lock b/reqwest/Cargo.lock
index fc7acf3..16c0278 100644
--- a/reqwest/Cargo.lock
+++ b/reqwest/Cargo.lock
@@ -6,6 +6,17 @@ version = "0.4.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b585a98a234c46fc563103e9278c9391fde1f4e6850334da895d27edb9580f62"
 
+[[package]]
+name = "async-trait"
+version = "0.1.30"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "da71fef07bc806586090247e971229289f64c210a278ee5ae419314eb386b31d"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "autocfg"
 version = "1.0.0"
@@ -624,6 +635,7 @@ dependencies = [
 name = "reqwest"
 version = "0.1.0"
 dependencies = [
+ "async-trait",
  "reqwest 0.10.4",
  "tokio",
 ]
diff --git a/reqwest/Cargo.toml b/reqwest/Cargo.toml
index 1e29b10..eaf7a98 100644
--- a/reqwest/Cargo.toml
+++ b/reqwest/Cargo.toml
@@ -7,6 +7,7 @@ edition = "2018"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+async-trait = "0.1.30"
 tokio = { version = "0.2.6", features = ["full"] }
 reqwest = "0.10.4"
 
diff --git a/reqwest/src/main.rs b/reqwest/src/main.rs
index b2a2e69..20fe90d 100644
--- a/reqwest/src/main.rs
+++ b/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(())
+    }
 }