apalis-postgres 1.0.0-rc.9

Background task processing for rust using apalis and postgres
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83

use apalis_core::backend::{Backend, ListWorkers, RunningWorker};

use futures::TryFutureExt;

use crate::{PostgresStorage, error::Error, timestamp::Timestamp};

#[derive(Debug)]
pub struct WorkerRow {
    pub id: String,
    pub worker_type: String,
    pub storage_name: String,
    pub layers: Option<String>,
    pub last_seen: Timestamp,
    pub started_at: Option<Timestamp>,
}

impl<Args: Sync> ListWorkers for PostgresStorage<Args>
where
    PostgresStorage<Args>: Backend<Error = Error>,
{
    fn list_workers(&self) -> impl Future<Output = Result<Vec<RunningWorker>, Self::Error>> + Send {
        let queue = self.persistence.config.queue.to_string();

        let pool = self.persistence.pool.clone();
        let limit = 100;
        let offset = 0;
        async move {
            let workers = sqlx::query_file_as!(
                WorkerRow,
                "queries/backend/list_workers.sql",
                queue,
                limit,
                offset
            )
            .fetch_all(&pool)
            .map_ok(|w| {
                w.into_iter()
                    .map(|w| RunningWorker {
                        id: w.id,
                        backend: w.storage_name,
                        started_at: w.started_at.unwrap_or_default().0,
                        last_heartbeat: w.last_seen.0,
                        layers: w.layers.unwrap_or_default(),
                        queue: w.worker_type,
                    })
                    .collect()
            })
            .await?;
            Ok(workers)
        }
    }

    fn list_all_workers(
        &self,
    ) -> impl Future<Output = Result<Vec<RunningWorker>, Self::Error>> + Send {
        let pool = self.persistence.pool.clone();
        let limit = 100;
        let offset = 0;
        async move {
            let workers = sqlx::query_file_as!(
                WorkerRow,
                "queries/backend/list_all_workers.sql",
                limit,
                offset
            )
            .fetch_all(&pool)
            .map_ok(|w| {
                w.into_iter()
                    .map(|w| RunningWorker {
                        id: w.id,
                        backend: w.storage_name,
                        started_at: w.started_at.unwrap_or_default().0,
                        last_heartbeat: w.last_seen.0,
                        layers: w.layers.unwrap_or_default(),
                        queue: w.worker_type,
                    })
                    .collect()
            })
            .await?;
            Ok(workers)
        }
    }
}