mithril_aggregator/database/query/epoch_settings/
get_epoch_settings.rs

1use anyhow::Context;
2use mithril_common::entities::Epoch;
3use mithril_common::StdResult;
4use mithril_persistence::sqlite::{Query, SourceAlias, SqLiteEntity, WhereCondition};
5use sqlite::Value;
6
7use crate::database::record::EpochSettingsRecord;
8
9/// Simple queries to retrieve [EpochSettingsRecord] from the sqlite database.
10pub struct GetEpochSettingsQuery {
11    condition: WhereCondition,
12}
13
14impl GetEpochSettingsQuery {
15    pub fn by_epoch(epoch: Epoch) -> StdResult<Self> {
16        let epoch_settings_id: i64 = epoch
17            .try_into()
18            .with_context(|| format!("Can not convert epoch: '{epoch}'"))?;
19
20        Ok(Self {
21            condition: WhereCondition::new(
22                "epoch_setting_id = ?*",
23                vec![Value::Integer(epoch_settings_id)],
24            ),
25        })
26    }
27}
28
29impl Query for GetEpochSettingsQuery {
30    type Entity = EpochSettingsRecord;
31
32    fn filters(&self) -> WhereCondition {
33        self.condition.clone()
34    }
35
36    fn get_definition(&self, condition: &str) -> String {
37        let aliases = SourceAlias::new(&[("{:epoch_setting:}", "es")]);
38        let projection = Self::Entity::get_projection().expand(aliases);
39        format!("select {projection} from epoch_setting as es where {condition} order by epoch_setting_id desc")
40    }
41}
42
43#[cfg(test)]
44mod tests {
45    use mithril_common::entities::{
46        BlockNumber, CardanoTransactionsSigningConfig, ProtocolParameters,
47    };
48    use mithril_persistence::sqlite::ConnectionExtensions;
49
50    use crate::database::test_helper::{insert_epoch_settings, main_db_connection};
51
52    use super::*;
53
54    #[test]
55    fn test_get_epoch_settings() {
56        let connection = main_db_connection().unwrap();
57        insert_epoch_settings(&connection, &[1, 2, 3]).unwrap();
58
59        let epoch_settings_record = connection
60            .fetch_first(GetEpochSettingsQuery::by_epoch(Epoch(1)).unwrap())
61            .unwrap()
62            .expect("Should have an epoch settings for epoch 1.");
63        assert_eq!(Epoch(1), epoch_settings_record.epoch_settings_id);
64        assert_eq!(
65            ProtocolParameters::new(1, 2, 1.0),
66            epoch_settings_record.protocol_parameters
67        );
68
69        assert_eq!(
70            CardanoTransactionsSigningConfig::new(BlockNumber(10), BlockNumber(15)),
71            epoch_settings_record.cardano_transactions_signing_config
72        );
73
74        let epoch_settings_record = connection
75            .fetch_first(GetEpochSettingsQuery::by_epoch(Epoch(3)).unwrap())
76            .unwrap()
77            .expect("Should have an epoch settings for epoch 3.");
78        assert_eq!(Epoch(3), epoch_settings_record.epoch_settings_id);
79        assert_eq!(
80            ProtocolParameters::new(3, 4, 1.0),
81            epoch_settings_record.protocol_parameters
82        );
83        assert_eq!(
84            CardanoTransactionsSigningConfig {
85                security_parameter: BlockNumber(30),
86                step: BlockNumber(15),
87            },
88            epoch_settings_record.cardano_transactions_signing_config
89        );
90
91        let cursor = connection
92            .fetch(GetEpochSettingsQuery::by_epoch(Epoch(5)).unwrap())
93            .unwrap();
94        assert_eq!(0, cursor.count());
95    }
96}
mithril_aggregator/database/query/epoch_settings/get_epoch_settings.rs

mithril_aggregator/database/query/epoch_settings/
get_epoch_settings.rs
