使用inventory实现定时任务自动处理，无需手动编写代码注册定时任务

Cargo.lock

@@ -1093,6 +1093,12 @@ dependencies = [
  "hashbrown",
 ]
 
+[[package]]
+name = "inventory"
+version = "0.3.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f958d3d68f4167080a18141e10381e7634563984a537f2a49a30fd8e53ac5767"
+
 [[package]]
 name = "ipnet"
 version = "2.9.0"
@@ -1179,6 +1185,7 @@ dependencies = [
  "http-body-util",
  "hyper",
  "i18n",
+ "inventory",
  "jsonwebtoken",
  "lazy_static",
  "macro",

Cargo.toml

@@ -61,3 +61,4 @@ hex = "0.4.3"
 redis = "0.27.4"
 deadpool-redis = "0.18.0"
 chrono-tz = "0.10.0"
+inventory = "0.3.15"

library/Cargo.toml

@@ -39,6 +39,7 @@ hex = { workspace = true }
 redis = { workspace = true, features = ["tokio-comp", "json"] }
 deadpool-redis = { workspace = true }
 chrono-tz = { workspace = true }
+inventory = { workspace = true }
 
 domain = { path = "../domain" }
 i18n = { path = "../i18n" }

library/src/task.rs

@@ -3,8 +3,14 @@ use std::{future::Future, pin::Pin, sync::Arc, time::Duration};
 use chrono_tz::Tz;
 use tokio_cron_scheduler::{Job, JobScheduler, JobSchedulerError};
 
+pub use inventory::submit;
+
 type TaskFun = dyn Fn() -> Pin<Box<dyn Future<Output = ()> + Send>> + Send + Sync;
 
+pub trait TaskMethod: Send + Sync + 'static {
+    fn ge_task(&self) -> Task;
+}
+
 pub struct Task{
     pub job: Arc<TaskFun>,
     pub cron: Option<String>,
@@ -13,14 +19,15 @@ pub struct Task{
 }
 
 /// 启动定时任务
-pub async fn start(tasks: Vec<Task>) {
+pub async fn start() {
+    let tasks = get_task_methods();
     match schedule(tasks).await {
         Ok(_) => tracing::info!("定时任务启动成功"),
         Err(err) => tracing::error!(error = ?err, "定时任务启动失败"),
     }
 }
 
-async fn schedule(tasks: Vec<Task>) -> Result<(), JobSchedulerError> {
+async fn schedule(tasks: Vec<Arc<Task>>) -> Result<(), JobSchedulerError> {
     let mut scheduler = JobScheduler::new().await?;
     scheduler.init().await?;
 
@@ -61,3 +68,22 @@ async fn schedule(tasks: Vec<Task>) -> Result<(), JobSchedulerError> {
     scheduler.start().await?;
     Ok(())
 }
+
+inventory::collect!(&'static dyn TaskMethod);
+
+#[macro_export]
+macro_rules! submit_task {
+    ($ty:ident) => {
+        ::library::task::submit! {
+            &$ty as &dyn ::library::task::TaskMethod
+        }
+    };
+}
+
+fn get_task_methods() -> Vec<Arc<Task>> {
+    let mut result = Vec::<Arc<Task>>::new();
+    for method in inventory::iter::<&dyn TaskMethod> {
+        result.push(Arc::new(method.ge_task()));
+    }
+    result
+}

macro/src/task.rs

@@ -77,12 +77,12 @@ pub fn gen_task(attr: TokenStream, item: TokenStream) -> TokenStream {
     let TaskArgs{ cron, interval, time_zone } = parse_macro_input!(attr as TaskArgs);
 
     // 将 method 转换为小写并生成标识符
-    let vis = func.vis.clone();
+    // let vis = func.vis.clone();
     let ident = func.sig.ident.clone();
 
     let result = quote!{
         let mut _result = library::task::Task {
-            job: std::sync::Arc::new(|| Box::pin(#ident ())),
+            job: std::sync::Arc::new(|| Box::pin(#ident::#ident ())),
             cron: None,
             interval: None,
             time_zone: None,
@@ -100,11 +100,18 @@ pub fn gen_task(attr: TokenStream, item: TokenStream) -> TokenStream {
     };
 
     let generated = quote! {
-        #vis fn #ident () -> library::task::Task {
+        #[allow(non_camel_case_types)]
+        struct #ident;
+        impl #ident {
             #func
-
+        }
+        impl library::task::TaskMethod for #ident {
+            fn ge_task(&self) -> library::task::Task {
                 #result
             }
+        }
+
+        ::library::submit_task!(#ident);
     };
 
     TokenStream::from(generated)

server/src/lib.rs

@@ -1,6 +1,5 @@
 use axum::{body::Body, extract::Request, http, routing::get, Router};
 use library::{config, task};
-use tasks::get_tasks;
 use tower::ServiceBuilder;
 use tower_http::trace::TraceLayer;
 
@@ -15,7 +14,7 @@ pub async fn serve() {
     tracing::info!("服务监听地址: {}", addr);
 
     // 启动任务
-    task::start(get_tasks()).await;
+    task::start().await;
     // 启动应用服务
     axum::serve(listener, init()).await.unwrap();
 }

server/src/tasks/mod.rs

@@ -1,9 +1 @@
-use library::task::Task;
-
 pub mod google_tasks;
-
-/// 定时任务维护器
-pub fn get_tasks() -> Vec<Task> {
-    vec![google_tasks::xxx_task(), google_tasks::xxx_task2()]
-}
-