apalis_postgres/queries/
list_workers.rs

1use apalis_core::backend::{BackendExt, ListWorkers, RunningWorker};
2use chrono::{DateTime, Utc};
3use futures::TryFutureExt;
4use ulid::Ulid;
5
6#[derive(Debug)]
7pub struct WorkerRow {
8    pub id: String,
9    pub worker_type: String,
10    pub storage_name: String,
11    pub layers: Option<String>,
12    pub last_seen: DateTime<Utc>,
13    pub started_at: Option<DateTime<Utc>>,
14}
15
16use crate::{CompactType, PgContext, PostgresStorage};
17
18impl<Args: Sync, D, F> ListWorkers for PostgresStorage<Args, CompactType, D, F>
19where
20    PostgresStorage<Args, CompactType, D, F>:
21        BackendExt<Context = PgContext, Compact = CompactType, IdType = Ulid, Error = sqlx::Error>,
22{
23    fn list_workers(
24        &self,
25        queue: &str,
26    ) -> impl Future<Output = Result<Vec<RunningWorker>, Self::Error>> + Send {
27        let queue = queue.to_string();
28        let pool = self.pool.clone();
29        let limit = 100;
30        let offset = 0;
31        async move {
32            let workers = sqlx::query_file_as!(
33                WorkerRow,
34                "queries/backend/list_workers.sql",
35                queue,
36                limit,
37                offset
38            )
39            .fetch_all(&pool)
40            .map_ok(|w| {
41                w.into_iter()
42                    .map(|w| RunningWorker {
43                        id: w.id,
44                        backend: w.storage_name,
45                        started_at: w.started_at.map(|t| t.timestamp()).unwrap_or_default() as u64,
46                        last_heartbeat: w.last_seen.timestamp() as u64,
47                        layers: w.layers.unwrap_or_default(),
48                        queue: w.worker_type,
49                    })
50                    .collect()
51            })
52            .await?;
53            Ok(workers)
54        }
55    }
56
57    fn list_all_workers(
58        &self,
59    ) -> impl Future<Output = Result<Vec<RunningWorker>, Self::Error>> + Send {
60        let pool = self.pool.clone();
61        let limit = 100;
62        let offset = 0;
63        async move {
64            let workers = sqlx::query_file_as!(
65                WorkerRow,
66                "queries/backend/list_all_workers.sql",
67                limit,
68                offset
69            )
70            .fetch_all(&pool)
71            .map_ok(|w| {
72                w.into_iter()
73                    .map(|w| RunningWorker {
74                        id: w.id,
75                        backend: w.storage_name,
76                        started_at: w.started_at.map(|t| t.timestamp()).unwrap_or_default() as u64,
77                        last_heartbeat: w.last_seen.timestamp() as u64,
78                        layers: w.layers.unwrap_or_default(),
79                        queue: w.worker_type,
80                    })
81                    .collect()
82            })
83            .await?;
84            Ok(workers)
85        }
86    }
87}
apalis_postgres/queries/list_workers.rs

apalis_postgres/queries/
list_workers.rs
