Updated other/data-factory to v4. (#518)

other/data_factory/Cargo.toml

@@ -4,8 +4,8 @@ version = "1.0.0"
 edition = "2021"
 
 [dependencies]
-actix-web = "3"
+actix-web = "4.0.0-beta.21"
 num_cpus = "1.13"
-redis = { version = "0.16.0", default-features = false, features = ["tokio-rt-core"] }
+redis = { version = "0.19.0", default-features = false, features = ["tokio-comp"] }
 # redis_tang is an redis pool for test purpose
-redis_tang = "0.1"
+redis_tang = "0.2"

other/data_factory/README.md

@@ -1,15 +1,15 @@
-## Usage:
-This is an example on constructing async state with `App::data_factory`
+# Usage:
+This is an example demonstrating the construction of async state with `App::data_factory`
 
 ## Reason:
-`data_factory` would make sense in these situations:
-- When async state not necessarily have to be shared between workers/threads.
+Use of a `data_factory` would make sense in these situations:
+- When async state does not necessarily have to be shared between workers/threads.
 
-- When async state would spawn tasks on `actix-rt`. If we centralized the state there could be a possibility the tasks get a very unbalanced distribution on the workers/threads
+- When an async state would spawn tasks on `actix-rt`. If state was centralized there could be a possibility the tasks get an unbalanced distribution on the workers/threads
 (`actix-rt` would spawn tasks on local thread whenever it's called)
 
 ## Requirement:
-- `rustc 1.43 stable`
+- `rustc 1.58 stable`
 - `redis` server listen on `127.0.0.1:6379`(or use `REDIS_URL` env argument when starting the example)
 
 ## Endpoints:

other/data_factory/src/main.rs

@@ -15,13 +15,13 @@ async fn main() -> std::io::Result<()> {
         .await
         .expect("fail to build pool");
 
-    let pool = RedisWrapper(pool);
+    let pool = Data::new(RedisWrapper(pool));
 
     HttpServer::new(move || {
         let redis_url = redis_url.clone();
 
         App::new()
-            .data(pool.clone())
+            .app_data(pool.clone())
             // a dummy data_factory implementation
             .data_factory(|| {
                 /*