From 03f3bb749358552acfb24496ab14438bfc61cdc3 Mon Sep 17 00:00:00 2001 From: kjuulh Date: Thu, 1 Aug 2024 21:53:58 +0200 Subject: [PATCH] feat: add drifter Signed-off-by: kjuulh --- .drone.yml | 2 + .gitignore | 2 + Cargo.lock | 587 ++++++++++++++++++++++++++++++++++++++++ Cargo.toml | 13 + crates/drift/Cargo.toml | 15 + crates/drift/src/lib.rs | 209 ++++++++++++++ cuddle.yaml | 17 ++ 7 files changed, 845 insertions(+) create mode 100644 .drone.yml create mode 100644 .gitignore create mode 100644 Cargo.lock create mode 100644 Cargo.toml create mode 100644 crates/drift/Cargo.toml create mode 100644 crates/drift/src/lib.rs create mode 100644 cuddle.yaml diff --git a/.drone.yml b/.drone.yml new file mode 100644 index 0000000..7d36638 --- /dev/null +++ b/.drone.yml @@ -0,0 +1,2 @@ +kind: template +load: cuddle-rust-lib-plan.yaml diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..9c4c004 --- /dev/null +++ b/.gitignore @@ -0,0 +1,2 @@ +target/ +.cuddle/ diff --git 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"ca2b8a661f7628cbd23440e50b05d705db3686f894fc9580820623656af974b1" + +[[package]] +name = "windows_x86_64_gnullvm" +version = "0.48.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "7896dbc1f41e08872e9d5e8f8baa8fdd2677f29468c4e156210174edc7f7b953" + +[[package]] +name = "windows_x86_64_msvc" +version = "0.48.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "1a515f5799fe4961cb532f983ce2b23082366b898e52ffbce459c86f67c8378a" diff --git a/Cargo.toml b/Cargo.toml new file mode 100644 index 0000000..c377c6f --- /dev/null +++ b/Cargo.toml @@ -0,0 +1,13 @@ +[workspace] +members = ["crates/*"] +resolver = "2" + +[workspace.package] +version = "0.1.0" + +[workspace.dependencies] +drift = { path = "crates/drift" } + +anyhow = { version = "1.0.71" } +tokio = { version = "1", features = ["full"] } +tracing = { version = "0.1", features = ["log"] } diff --git a/crates/drift/Cargo.toml b/crates/drift/Cargo.toml new file mode 100644 index 0000000..22612b5 --- /dev/null +++ b/crates/drift/Cargo.toml @@ -0,0 +1,15 @@ +[package] +name = "drift" +version = "0.1.0" +edition = "2021" + +[dependencies] +anyhow.workspace = true +async-trait = "0.1.81" +thiserror = "1.0.63" +tokio.workspace = true +tokio-util = "0.7.11" +tracing.workspace = true + +[dev-dependencies] +tracing-test = "0.2.5" diff --git a/crates/drift/src/lib.rs b/crates/drift/src/lib.rs new file mode 100644 index 0000000..1d392b7 --- /dev/null +++ b/crates/drift/src/lib.rs @@ -0,0 +1,209 @@ +use std::{sync::Arc, time::Duration}; + +use async_trait::async_trait; +use std::future::Future; +use tokio::time; +use tokio_util::sync::CancellationToken; + +#[derive(Debug, Clone, thiserror::Error)] +pub enum DriftError {} + +pub fn schedule(interval: Duration, func: F) -> CancellationToken +where + F: Fn() -> Fut + Send + Sync + 'static, + Fut: Future> + Send + 'static, +{ + let drifter = FuncDrifter::new(func); + + schedule_drifter(interval, drifter) +} + +pub fn schedule_drifter(interval: Duration, drifter: FDrifter) -> CancellationToken +where + FDrifter: Drifter + Send + 'static, + FDrifter: Clone, +{ + let cancellation_token = CancellationToken::new(); + + tokio::spawn({ + let cancellation_token = cancellation_token.clone(); + let drifter = drifter.clone(); + + async move { + let mut wait = interval; + + loop { + let child_token = cancellation_token.child_token(); + let sleep = time::sleep(wait); + tokio::pin!(sleep); + + tokio::select! { + _ = cancellation_token.cancelled() => { + tracing::trace!("stopping drift job"); + + break + } + _ = &mut sleep => { + let start = std::time::Instant::now(); + + tracing::debug!("running job"); + if let Err(e) = drifter.execute(child_token).await { + tracing::error!("drift job failed with error: {}, stopping routine", e); + cancellation_token.cancel(); + continue + } + + let elapsed = start.elapsed(); + wait = interval.saturating_sub(elapsed); + tracing::debug!("job took: {}ms, waiting: {}ms for next run", elapsed.as_millis(), wait.as_millis()); + } + + } + } + } + }); + + cancellation_token +} + +struct FuncDrifter +where + F: Fn() -> Fut + Send + Sync + 'static, + Fut: Future> + Send + 'static, +{ + func: Arc, +} + +impl Clone for FuncDrifter +where + F: Fn() -> Fut + Send + Sync + 'static, + Fut: Future> + Send + 'static, +{ + fn clone(&self) -> Self { + Self { + func: self.func.clone(), + } + } +} + +impl FuncDrifter +where + F: Fn() -> Fut + Send + Sync + 'static, + Fut: Future> + Send + 'static, +{ + fn new(func: F) -> Self { + Self { + func: Arc::new(func), + } + } + + async fn execute_func(&self) -> anyhow::Result<()> { + if let Err(e) = (self.func)().await { + anyhow::bail!(e) + } + + Ok(()) + } +} + +#[async_trait] +impl Drifter for FuncDrifter +where + F: Fn() -> Fut + Send + Sync, + Fut: Future> + Send, +{ + async fn execute(&self, token: CancellationToken) -> anyhow::Result<()> { + self.execute_func().await?; + + Ok(()) + } +} + +#[async_trait] +pub trait Drifter { + async fn execute(&self, token: CancellationToken) -> anyhow::Result<()>; +} + +#[cfg(test)] +mod tests { + use std::sync::{Arc, Mutex}; + + use tracing_test::traced_test; + + use super::*; + + #[tokio::test] + async fn test_can_schedule_jobs() -> anyhow::Result<()> { + let token = schedule(Duration::from_millis(50), || async move { Ok(()) }); + + tokio::time::sleep(Duration::from_millis(150)).await; + + assert!(!token.is_cancelled()); + + Ok(()) + } + + #[derive(Default, Clone)] + pub struct CounterDrifter { + counter: Arc>, + } + + #[async_trait] + impl Drifter for CounterDrifter { + async fn execute(&self, _cancellation_token: CancellationToken) -> anyhow::Result<()> { + let mut counter = self.counter.lock().unwrap(); + *counter += 1; + + Ok(()) + } + } + + #[tokio::test] + async fn test_can_call_job_multiple_times() -> anyhow::Result<()> { + let drifter = CounterDrifter::default(); + + let token = schedule_drifter(Duration::from_millis(50), drifter.clone()); + tokio::time::sleep(Duration::from_millis(150)).await; + + assert!(!token.is_cancelled()); + + let counter = drifter.counter.lock().unwrap(); + assert!(*counter >= 2); + + Ok(()) + } + + #[tokio::test] + async fn test_cancelled() -> anyhow::Result<()> { + let drifter = CounterDrifter::default(); + + let token = schedule_drifter(Duration::from_millis(50), drifter.clone()); + tokio::time::sleep(Duration::from_millis(75)).await; + token.cancel(); + + assert!(token.is_cancelled()); + + let counter = drifter.counter.lock().unwrap(); + assert_eq!(*counter, 1); + + Ok(()) + } + + #[tokio::test] + #[traced_test] + async fn test_calls_trace_on_start_and_end() -> anyhow::Result<()> { + let token = schedule(Duration::from_millis(10), || async { + tokio::time::sleep(std::time::Duration::from_nanos(1000)).await; + + Ok(()) + }); + tokio::time::sleep(Duration::from_millis(150)).await; + + assert!(!token.is_cancelled()); + + assert!(logs_contain("running job")); + assert!(logs_contain("job took:")); + + Ok(()) + } +} diff --git a/cuddle.yaml b/cuddle.yaml new file mode 100644 index 0000000..d0ad079 --- /dev/null +++ b/cuddle.yaml @@ -0,0 +1,17 @@ +# yaml-language-server: $schema=https://git.front.kjuulh.io/kjuulh/cuddle/raw/branch/main/schemas/base.json + +base: "git@git.front.kjuulh.io:kjuulh/cuddle-rust-lib-plan.git" + +vars: + service: "drift" + registry: kasperhermansen + +please: + project: + owner: kjuulh + repository: "drift" + branch: main + settings: + api_url: "https://git.front.kjuulh.io" + actions: + rust: