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

use std::{collections::HashMap, sync::Arc};

use async_trait::async_trait;
use time::OffsetDateTime;
use tokio::sync::Mutex;
use tower_sessions_core::{
    session::{Id, Record},
    session_store, SessionStore,
};

/// A session store that lives only in memory.
///
/// This is useful for testing but not recommended for real applications.
///
/// # Examples
///
/// ```rust
/// use tower_sessions::MemoryStore;
/// MemoryStore::default();
/// ```
#[derive(Clone, Debug, Default)]
pub struct MemoryStore(Arc<Mutex<HashMap<Id, (Record, OffsetDateTime)>>>);

#[async_trait]
impl SessionStore for MemoryStore {
    async fn save(&self, record: &Record) -> session_store::Result<()> {
        self.0
            .lock()
            .await
            .insert(record.id, (record.clone(), record.expiry_date));
        Ok(())
    }

    async fn load(&self, session_id: &Id) -> session_store::Result<Option<Record>> {
        Ok(self
            .0
            .lock()
            .await
            .get(session_id)
            .filter(|(_, expiry_date)| is_active(*expiry_date))
            .map(|(session, _)| session)
            .cloned())
    }

    async fn delete(&self, session_id: &Id) -> session_store::Result<()> {
        self.0.lock().await.remove(session_id);
        Ok(())
    }
}

fn is_active(expiry_date: OffsetDateTime) -> bool {
    expiry_date > OffsetDateTime::now_utc()
}