mithril_aggregator/database/query/stake_pool/
get_stake_pool.rs

1use sqlite::Value;
2
3use mithril_common::entities::Epoch;
4use mithril_common::StdResult;
5use mithril_persistence::sqlite::{Query, SourceAlias, SqLiteEntity, WhereCondition};
6
7use crate::database::record::StakePool;
8
9/// Simple queries to retrieve [StakePool] from the sqlite database.
10pub struct GetStakePoolQuery {
11    condition: WhereCondition,
12}
13
14impl GetStakePoolQuery {
15    /// Get StakePools for a given Epoch for given pool_ids.
16    pub fn by_epoch(epoch: Epoch) -> StdResult<Self> {
17        let condition = WhereCondition::new("epoch = ?*", vec![Value::Integer(epoch.try_into()?)]);
18
19        Ok(Self { condition })
20    }
21}
22
23impl Query for GetStakePoolQuery {
24    type Entity = StakePool;
25
26    fn filters(&self) -> WhereCondition {
27        self.condition.clone()
28    }
29
30    fn get_definition(&self, condition: &str) -> String {
31        let aliases = SourceAlias::new(&[("{:stake_pool:}", "sp")]);
32        let projection = Self::Entity::get_projection().expand(aliases);
33
34        format!("select {projection} from stake_pool as sp where {condition} order by epoch asc, stake desc, stake_pool_id asc")
35    }
36}
37
38#[cfg(test)]
39mod tests {
40    use crate::database::test_helper::{insert_stake_pool, main_db_connection};
41    use mithril_persistence::sqlite::ConnectionExtensions;
42
43    use super::*;
44
45    #[test]
46    fn test_get_stake_pools() {
47        let connection = main_db_connection().unwrap();
48        insert_stake_pool(&connection, &[1, 2, 3]).unwrap();
49
50        let mut cursor = connection
51            .fetch(GetStakePoolQuery::by_epoch(Epoch(1)).unwrap())
52            .unwrap();
53
54        let stake_pool = cursor.next().expect("Should have a stake pool 'pool3'.");
55        assert_eq!(
56            ("pool3".to_string(), Epoch(1), 1200),
57            (stake_pool.stake_pool_id, stake_pool.epoch, stake_pool.stake)
58        );
59        assert_eq!(2, cursor.count());
60
61        let mut cursor = connection
62            .fetch(GetStakePoolQuery::by_epoch(Epoch(3)).unwrap())
63            .unwrap();
64
65        let stake_pool = cursor.next().expect("Should have a stake pool 'pool2'.");
66        assert_eq!(
67            ("pool2".to_string(), Epoch(3), 1190),
68            (stake_pool.stake_pool_id, stake_pool.epoch, stake_pool.stake)
69        );
70        assert_eq!(2, cursor.count());
71
72        let cursor = connection
73            .fetch(GetStakePoolQuery::by_epoch(Epoch(5)).unwrap())
74            .unwrap();
75        assert_eq!(0, cursor.count());
76    }
77}
mithril_aggregator/database/query/stake_pool/get_stake_pool.rs

mithril_aggregator/database/query/stake_pool/
get_stake_pool.rs
