mithril_signer/database/query/stake_pool/
insert_or_replace_stake_pool.rs

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1use std::iter::repeat_n;
2
3use chrono::Utc;
4use sqlite::Value;
5
6use mithril_common::entities::{Epoch, PartyId, Stake};
7use mithril_persistence::sqlite::{Query, SourceAlias, SqLiteEntity, WhereCondition};
8
9use crate::database::record::StakePool;
10
11/// Query to insert or replace [StakePool] in the sqlite database
12pub struct InsertOrReplaceStakePoolQuery {
13    condition: WhereCondition,
14}
15
16impl InsertOrReplaceStakePoolQuery {
17    pub fn many(records: Vec<(PartyId, Epoch, Stake)>) -> Self {
18        let columns = "(stake_pool_id, epoch, stake, created_at)";
19        let values_columns: Vec<&str> = repeat_n("(?*, ?*, ?*, ?*)", records.len()).collect();
20        let values = records
21            .into_iter()
22            .flat_map(|(stake_pool_id, epoch, stake)| {
23                vec![
24                    Value::String(stake_pool_id),
25                    Value::Integer(epoch.try_into().unwrap()),
26                    Value::Integer(i64::try_from(stake).unwrap()),
27                    Value::String(Utc::now().to_rfc3339()),
28                ]
29            })
30            .collect();
31        let condition = WhereCondition::new(
32            format!("{columns} values {}", values_columns.join(", ")).as_str(),
33            values,
34        );
35
36        Self { condition }
37    }
38}
39
40impl Query for InsertOrReplaceStakePoolQuery {
41    type Entity = StakePool;
42
43    fn filters(&self) -> WhereCondition {
44        self.condition.clone()
45    }
46
47    fn get_definition(&self, condition: &str) -> String {
48        // it is important to alias the fields with the same name as the table
49        // since the table cannot be aliased in a RETURNING statement in SQLite.
50        let projection = Self::Entity::get_projection()
51            .expand(SourceAlias::new(&[("{:stake_pool:}", "stake_pool")]));
52
53        format!("insert or replace into stake_pool {condition} returning {projection}")
54    }
55}
56
57#[cfg(test)]
58mod tests {
59    use crate::database::query::GetStakePoolQuery;
60    use crate::database::test_helper::{insert_stake_pool, main_db_connection};
61    use mithril_persistence::sqlite::ConnectionExtensions;
62
63    use super::*;
64
65    #[test]
66    fn test_update_stakes() {
67        let connection = main_db_connection().unwrap();
68        insert_stake_pool(&connection, &[3]).unwrap();
69
70        let pools: Vec<StakePool> = connection
71            .fetch_collect(InsertOrReplaceStakePoolQuery::many(vec![(
72                "pool4".to_string(),
73                Epoch(3),
74                9999,
75            )]))
76            .unwrap();
77        let stake_pool = pools.first().unwrap();
78
79        assert_eq!("pool4".to_string(), stake_pool.stake_pool_id);
80        assert_eq!(Epoch(3), stake_pool.epoch);
81        assert_eq!(9999, stake_pool.stake);
82
83        let mut cursor = connection
84            .fetch(GetStakePoolQuery::by_epoch(Epoch(3)).unwrap())
85            .unwrap();
86        let stake_pool = cursor.next().expect("Should have a stake pool 'pool4'.");
87
88        assert_eq!("pool4".to_string(), stake_pool.stake_pool_id);
89        assert_eq!(Epoch(3), stake_pool.epoch);
90        assert_eq!(9999, stake_pool.stake);
91        assert_eq!(3, cursor.count());
92    }
93}
mithril_signer/database/query/stake_pool/insert_or_replace_stake_pool.rs

mithril_signer/database/query/stake_pool/
insert_or_replace_stake_pool.rs
