lifecycle: skeleton for lifecycle worker

This commit is contained in:
Alex 2023-08-30 12:41:11 +02:00
parent f7b409f114
commit a2e0e34db5
2 changed files with 254 additions and 0 deletions

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@ -0,0 +1,252 @@
use std::sync::Arc;
use async_trait::async_trait;
use chrono::prelude::*;
use std::time::{Duration, Instant};
use tokio::sync::watch;
use garage_util::background::*;
use garage_util::error::{Error, OkOrMessage};
use garage_util::persister::PersisterShared;
use garage_util::time::*;
use garage_table::EmptyKey;
use crate::bucket_table::*;
use crate::s3::object_table::*;
use crate::garage::Garage;
mod v090 {
use chrono::naive::NaiveDate;
use serde::{Deserialize, Serialize};
#[derive(Serialize, Deserialize, Default, Clone, Copy)]
pub struct LifecycleWorkerPersisted {
pub last_completed: Option<NaiveDate>,
}
impl garage_util::migrate::InitialFormat for LifecycleWorkerPersisted {
const VERSION_MARKER: &'static [u8] = b"G09lwp";
}
}
pub use v090::*;
pub struct LifecycleWorker {
garage: Arc<Garage>,
state: State,
persister: PersisterShared<LifecycleWorkerPersisted>,
}
enum State {
Completed(NaiveDate),
Running {
date: NaiveDate,
pos: Vec<u8>,
counter: usize,
objects_expired: usize,
mpu_aborted: usize,
last_bucket: Option<Bucket>,
},
}
pub fn register_bg_vars(
persister: &PersisterShared<LifecycleWorkerPersisted>,
vars: &mut vars::BgVars,
) {
vars.register_ro(persister, "lifecycle-last-completed", |p| {
p.get_with(|x| {
x.last_completed
.map(|date| date.to_string())
.unwrap_or("never".to_string())
})
});
}
impl LifecycleWorker {
pub fn new(garage: Arc<Garage>, persister: PersisterShared<LifecycleWorkerPersisted>) -> Self {
let today = today();
let state = match persister.get_with(|x| x.last_completed) {
Some(d) if d >= today => State::Completed(d),
_ => State::Running {
date: today,
pos: vec![],
counter: 0,
objects_expired: 0,
mpu_aborted: 0,
last_bucket: None,
},
};
Self {
garage,
state,
persister,
}
}
}
#[async_trait]
impl Worker for LifecycleWorker {
fn name(&self) -> String {
"object lifecycle worker".to_string()
}
fn status(&self) -> WorkerStatus {
match &self.state {
State::Completed(d) => WorkerStatus {
freeform: vec![format!("Last completed: {}", d)],
..Default::default()
},
State::Running {
date,
counter,
objects_expired,
mpu_aborted,
..
} => {
let n_objects = self
.garage
.object_table
.data
.store
.fast_len()
.unwrap_or(None);
let progress = match n_objects {
None => "...".to_string(),
Some(total) => format!(
"~{:.2}%",
100. * std::cmp::min(*counter, total) as f32 / total as f32
),
};
WorkerStatus {
progress: Some(progress),
freeform: vec![
format!("Started: {}", date),
format!("Objects expired: {}", objects_expired),
format!("Multipart uploads aborted: { }", mpu_aborted),
],
..Default::default()
}
}
}
}
async fn work(&mut self, _must_exit: &mut watch::Receiver<bool>) -> Result<WorkerState, Error> {
match &mut self.state {
State::Completed(_) => Ok(WorkerState::Idle),
State::Running {
date,
counter,
objects_expired,
mpu_aborted,
pos,
last_bucket,
} => {
let (object_bytes, next_pos) = match self
.garage
.object_table
.data
.store
.get_gt(&pos)?
{
None => {
info!("Lifecycle worker finished for {}, objects expired: {}, mpu aborted: {}", date, *objects_expired, *mpu_aborted);
self.persister
.set_with(|x| x.last_completed = Some(*date))?;
self.state = State::Completed(*date);
return Ok(WorkerState::Idle);
}
Some((k, v)) => (v, k),
};
let object = self.garage.object_table.data.decode_entry(&object_bytes)?;
process_object(
&self.garage,
object,
objects_expired,
mpu_aborted,
last_bucket,
)
.await?;
*counter += 1;
*pos = next_pos;
Ok(WorkerState::Busy)
}
}
}
async fn wait_for_work(&mut self) -> WorkerState {
match &self.state {
State::Completed(d) => {
let now = now_msec();
let next_start = midnight_ts(d.succ());
if now < next_start {
tokio::time::sleep_until(
(Instant::now() + Duration::from_millis(next_start - now)).into(),
)
.await;
}
self.state = State::Running {
date: today(),
pos: vec![],
counter: 0,
objects_expired: 0,
mpu_aborted: 0,
last_bucket: None,
};
}
State::Running { .. } => (),
}
WorkerState::Busy
}
}
async fn process_object(
garage: &Arc<Garage>,
object: Object,
objects_expired: &mut usize,
mpu_aborted: &mut usize,
last_bucket: &mut Option<Bucket>,
) -> Result<(), Error> {
let bucket = match last_bucket.take() {
Some(b) if b.id == object.bucket_id => b,
_ => garage
.bucket_table
.get(&EmptyKey, &object.bucket_id)
.await?
.ok_or_message("object in non-existent bucket")?,
};
let lifecycle_policy: &[LifecycleRule] = bucket
.state
.as_option()
.and_then(|s| s.lifecycle_config.get().as_deref())
.unwrap_or_default();
for rule in lifecycle_policy.iter() {
todo!()
}
*last_bucket = Some(bucket);
Ok(())
}
fn midnight_ts(date: NaiveDate) -> u64 {
date.and_hms(0, 0, 0).timestamp_millis() as u64
}
fn next_date(ts: u64) -> NaiveDate {
NaiveDateTime::from_timestamp_millis(ts as i64)
.expect("bad timestamp")
.date()
.succ()
}
fn today() -> NaiveDate {
Utc::today().naive_utc()
}

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@ -2,3 +2,5 @@ pub mod block_ref_table;
pub mod mpu_table; pub mod mpu_table;
pub mod object_table; pub mod object_table;
pub mod version_table; pub mod version_table;
pub mod lifecycle_worker;