Ensure memory storage timer works

examples/basic-example/src/main.rs

@@ -1,6 +1,11 @@
 use actix_rt::Arbiter;
 use anyhow::Error;
-use background_jobs::{ActixJob as Job, MaxRetries, WorkerConfig};
+use background_jobs::{
+    // memory_storage::{ActixTimer, Storage},
+    ActixJob as Job,
+    MaxRetries,
+    WorkerConfig,
+};
 use background_jobs_sled_storage::Storage;
 use std::{
     future::{ready, Ready},
@@ -33,6 +38,7 @@ async fn main() -> Result<(), Error> {
     // Set up our Storage
     let db = sled::Config::new().temporary(true).open()?;
     let storage = Storage::new(db)?;
+    // let storage = Storage::new(ActixTimer);
 
     let arbiter = Arbiter::new();
 

jobs-actix/src/lib.rs

@@ -14,7 +14,7 @@
 //! ```rust
 //! use anyhow::Error;
 //! use background_jobs_core::{Backoff, Job, MaxRetries};
-//! use background_jobs_actix::WorkerConfig;
+//! use background_jobs_actix::{ActixTimer, WorkerConfig};
 //! use std::future::{ready, Ready};
 //!
 //! const DEFAULT_QUEUE: &'static str = "default";
@@ -35,7 +35,7 @@
 //!     // Set up our Storage
 //!     // For this example, we use the default in-memory storage mechanism
 //!     use background_jobs_core::memory_storage::Storage;
-//!     let storage = Storage::new();
+//!     let storage = Storage::new(ActixTimer);
 //!
 //!     // Configure and start our workers
 //!     let queue_handle = WorkerConfig::new(storage, move |_| MyState::new("My App"))
@@ -115,7 +115,9 @@
 
 use actix_rt::{Arbiter, ArbiterHandle};
 use anyhow::Error;
-use background_jobs_core::{new_job, new_scheduled_job, Job, ProcessorMap, Stats, Storage};
+use background_jobs_core::{
+    memory_storage::Timer, new_job, new_scheduled_job, Job, ProcessorMap, Stats, Storage,
+};
 use std::{
     collections::BTreeMap,
     marker::PhantomData,
@@ -133,6 +135,22 @@ use self::{every::every, server::Server, worker::LocalWorkerStarter};
 
 pub use background_jobs_core::ActixJob;
 
+/// A timer implementation for the Memory Storage backend
+#[derive(Debug, Clone)]
+pub struct ActixTimer;
+
+#[async_trait::async_trait]
+impl Timer for ActixTimer {
+    async fn timeout<F>(&self, duration: Duration, future: F) -> Result<F::Output, ()>
+    where
+        F: std::future::Future + Send + Sync,
+    {
+        actix_rt::time::timeout(duration, future)
+            .await
+            .map_err(|_| ())
+    }
+}
+
 /// Manager for worker threads
 ///
 /// Manager attempts to restart workers as their arbiters die

jobs-core/src/storage.rs

@@ -146,7 +146,7 @@ pub mod memory_storage {
         /// Race a future against the clock, returning an empty tuple if the clock wins
         async fn timeout<F>(&self, duration: Duration, future: F) -> Result<F::Output, ()>
         where
-            F: std::future::Future;
+            F: std::future::Future + Send + Sync;
     }
 
     #[derive(Clone)]

jobs-sled/Cargo.toml

@@ -19,4 +19,5 @@ sled = "0.34"
 serde_cbor = "0.11"
 thiserror = "1.0"
 tokio = { version = "1", default-features = false, features = ["rt", "sync"] }
+tracing = "0.1"
 uuid = { version = "1", features = ["v4", "serde"] }

jobs-sled/src/lib.rs

@@ -22,7 +22,7 @@ use sled::{Db, Tree};
 use std::{
     collections::HashMap,
     sync::{Arc, Mutex},
-    time::{Duration, SystemTime},
+    time::{Duration, Instant, SystemTime},
 };
 use tokio::sync::Notify;
 use uuid::Uuid;
@@ -114,6 +114,12 @@ impl background_jobs_core::Storage for Storage {
 
     async fn fetch_job_from_queue(&self, queue: &str) -> Result<JobInfo> {
         loop {
+            let notifier = self.notifier(queue.to_owned());
+
+            let notified = notifier.notified();
+            tokio::pin!(notified);
+            notified.as_mut().enable();
+
             let this = self.clone();
             let queue2 = queue.to_owned();
 
@@ -194,9 +200,10 @@ impl background_jobs_core::Storage for Storage {
             })
             .await?;
 
-            let notifier = self.notifier(queue.to_owned());
-
-            let _ = timeout(duration, notifier.notified()).await;
+            let before = Instant::now();
+            tracing::debug!("Waiting for notification for at most {:?}", duration);
+            let _ = timeout(duration, notified).await;
+            tracing::debug!("Notified after {:?}", before.elapsed());
         }
     }
 

src/lib.rs

@@ -161,7 +161,7 @@
 //! `background-jobs-core` crate, which provides the Job trait, as well as some
 //! other useful types for implementing a jobs processor and job store.
 
-pub use background_jobs_core::{memory_storage, Backoff, Job, JobStat, MaxRetries, Stats};
+pub use background_jobs_core::{Backoff, Job, JobStat, MaxRetries, Stats};
 
 pub mod dev {
     //! Useful types and methods for developing Storage and Processor implementations.
@@ -171,5 +171,12 @@ pub mod dev {
     };
 }
 
+pub mod memory_storage {
+    pub use background_jobs_core::memory_storage::{Storage, Timer};
+
+    #[cfg(feature = "background-jobs-actix")]
+    pub use background_jobs_actix::ActixTimer;
+}
+
 #[cfg(feature = "background-jobs-actix")]
 pub use background_jobs_actix::{ActixJob, Manager, QueueHandle, WorkerConfig};