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Update example

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This commit is contained in:
Rafael Caricio 2023-03-22 10:51:33 +01:00
parent 3285647117
commit 98f0951d33
Signed by: rafaelcaricio
GPG key ID: 3C86DBCE8E93C947
1 changed files with 108 additions and 46 deletions
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154
examples/simple_worker/src/main.rs
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@ -1,20 +1,33 @@
use async_trait::async_trait;
use backie::{BackgroundTask, CurrentTask};
use backie::{BackgroundTask, CurrentTask, QueueConfig, RetentionMode};
use backie::{PgTaskStore, Queue, WorkerPool};
use diesel_async::pg::AsyncPgConnection;
use diesel_async::pooled_connection::{bb8::Pool, AsyncDieselConnectionManager};
use serde::{Deserialize, Serialize};
use std::time::Duration;
use std::collections::BTreeMap;
use std::sync::Arc;
use std::time::{Duration, Instant};
use tokio::sync::Mutex;
use tokio::task::JoinSet;
#[derive(Clone, Debug)]
pub struct MyApplicationContext {
app_name: String,
notify_finished: Arc<Mutex<Option<tokio::sync::oneshot::Sender<()>>>>,
}
impl MyApplicationContext {
pub fn new(app_name: &str) -> Self {
pub fn new(app_name: &str, notify_finished: tokio::sync::oneshot::Sender<()>) -> Self {
Self {
app_name: app_name.to_string(),
notify_finished: Arc::new(Mutex::new(Some(notify_finished))),
}
}
pub async fn notify_finished(&self) {
let mut lock = self.notify_finished.lock().await;
if let Some(sender) = lock.take() {
sender.send(()).unwrap();
}
}
}
@ -37,12 +50,6 @@ impl BackgroundTask for MyTask {
type Error = anyhow::Error;
async fn run(&self, task: CurrentTask, ctx: Self::AppData) -> Result<(), Self::Error> {
// let new_task = MyTask::new(self.number + 1);
// queue
// .insert_task(&new_task)
// .await
// .unwrap();
log::info!(
"[{}] Hello from {}! the current number is {}",
task.id(),
@ -74,17 +81,6 @@ impl BackgroundTask for MyFailingTask {
type Error = anyhow::Error;
async fn run(&self, task: CurrentTask, _ctx: Self::AppData) -> Result<(), Self::Error> {
// let new_task = MyFailingTask::new(self.number + 1);
// queue
// .insert_task(&new_task)
// .await
// .unwrap();
// task.id();
// task.keep_alive().await?;
// task.previous_error();
// task.retry_count();
log::info!("[{}] the current number is {}", task.id(), self.number);
tokio::time::sleep(Duration::from_secs(3)).await;
@ -93,58 +89,124 @@ impl BackgroundTask for MyFailingTask {
}
}
#[derive(Serialize, Deserialize)]
struct EmptyTask {
pub idx: u64,
}
#[async_trait]
impl BackgroundTask for EmptyTask {
const TASK_NAME: &'static str = "empty_task";
const QUEUE: &'static str = "loaded_queue";
type AppData = MyApplicationContext;
type Error = anyhow::Error;
async fn run(&self, _task: CurrentTask, _ctx: Self::AppData) -> Result<(), Self::Error> {
Ok(())
}
}
#[derive(Serialize, Deserialize)]
struct FinalTask;
#[async_trait]
impl BackgroundTask for FinalTask {
const TASK_NAME: &'static str = "final_task";
const QUEUE: &'static str = "loaded_queue";
type AppData = MyApplicationContext;
type Error = anyhow::Error;
async fn run(&self, _task: CurrentTask, ctx: Self::AppData) -> Result<(), Self::Error> {
ctx.notify_finished().await;
Ok(())
}
}
#[tokio::main]
async fn main() {
async fn main() -> anyhow::Result<()> {
env_logger::init();
let connection_url = "postgres://postgres:password@localhost/backie";
log::info!("Starting...");
let max_pool_size: u32 = 3;
let manager = AsyncDieselConnectionManager::<AsyncPgConnection>::new(connection_url);
let pool = Pool::builder()
.max_size(max_pool_size)
.max_size(300)
.min_idle(Some(1))
.build(manager)
.await
.unwrap();
log::info!("Pool created ...");
let task_store = PgTaskStore::new(pool);
let (tx, mut rx) = tokio::sync::watch::channel(false);
let (notify_finished, wait_done) = tokio::sync::oneshot::channel();
// Some global application context I want to pass to my background tasks
let my_app_context = MyApplicationContext::new("Backie Example App");
let my_app_context = MyApplicationContext::new("Backie Example App", notify_finished);
// queue.enqueue(task1).await.unwrap();
// queue.enqueue(task2).await.unwrap();
// queue.enqueue(task3).await.unwrap();
// Store all task to join them later
let mut tasks = JoinSet::new();
for i in 0..1_000 {
tasks.spawn({
let pool = pool.clone();
async move {
let mut connection = pool.get().await.unwrap();
let task = EmptyTask { idx: i };
task.enqueue(&mut connection).await.unwrap();
}
});
}
while let Some(result) = tasks.join_next().await {
let _ = result?;
}
(FinalTask {})
.enqueue(&mut pool.get().await.unwrap())
.await
.unwrap();
log::info!("Tasks created ...");
let started = Instant::now();
// Register the task types I want to use and start the worker pool
let join_handle =
WorkerPool::new(task_store.clone(), move || my_app_context.clone())
.register_task_type::<MyTask>()
.register_task_type::<MyFailingTask>()
.configure_queue("default".into())
.start(async move {
let _ = rx.changed().await;
})
.await
.unwrap();
let join_handle = WorkerPool::new(PgTaskStore::new(pool.clone()), move || my_app_context.clone())
.register_task_type::<MyTask>()
.register_task_type::<MyFailingTask>()
.register_task_type::<EmptyTask>()
.register_task_type::<FinalTask>()
.configure_queue("default".into())
.configure_queue(
QueueConfig::new("loaded_queue")
.pull_interval(Duration::from_millis(100))
.retention_mode(RetentionMode::RemoveDone)
.num_workers(300),
)
.start(async move {
let _ = rx.changed().await;
})
.await
.unwrap();
log::info!("Workers started ...");
let task1 = MyTask::new(0);
let task2 = MyTask::new(20_000);
let task3 = MyFailingTask::new(50_000);
let queue = Queue::new(task_store);
queue.enqueue(task1).await.unwrap();
queue.enqueue(task2).await.unwrap();
queue.enqueue(task3).await.unwrap();
log::info!("Tasks created ...");
wait_done.await.unwrap();
let elapsed = started.elapsed();
println!("Ran 50k jobs in {} seconds", elapsed.as_secs());
// Wait for Ctrl+C
let _ = tokio::signal::ctrl_c().await;
// let _ = tokio::signal::ctrl_c().await;
log::info!("Stopping ...");
tx.send(true).unwrap();
join_handle.await.unwrap();
log::info!("Workers Stopped!");
Ok(())
}