mithril_aggregator/database/query/epoch_settings/
get_epoch_settings.rs

1use anyhow::Context;
2use mithril_common::StdResult;
3use mithril_common::entities::Epoch;
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!(
40            "select {projection} from epoch_setting as es where {condition} order by epoch_setting_id desc"
41        )
42    }
43}
44
45#[cfg(test)]
46mod tests {
47    use mithril_common::entities::{
48        BlockNumber, CardanoTransactionsSigningConfig, ProtocolParameters,
49    };
50    use mithril_persistence::sqlite::ConnectionExtensions;
51
52    use crate::database::test_helper::{insert_epoch_settings, main_db_connection};
53
54    use super::*;
55
56    #[test]
57    fn test_get_epoch_settings() {
58        let connection = main_db_connection().unwrap();
59        insert_epoch_settings(&connection, &[1, 2, 3]).unwrap();
60
61        let epoch_settings_record = connection
62            .fetch_first(GetEpochSettingsQuery::by_epoch(Epoch(1)).unwrap())
63            .unwrap()
64            .expect("Should have an epoch settings for epoch 1.");
65        assert_eq!(Epoch(1), epoch_settings_record.epoch_settings_id);
66        assert_eq!(
67            ProtocolParameters::new(1, 2, 1.0),
68            epoch_settings_record.protocol_parameters
69        );
70
71        assert_eq!(
72            CardanoTransactionsSigningConfig::new(BlockNumber(10), BlockNumber(15)),
73            epoch_settings_record.cardano_transactions_signing_config
74        );
75
76        let epoch_settings_record = connection
77            .fetch_first(GetEpochSettingsQuery::by_epoch(Epoch(3)).unwrap())
78            .unwrap()
79            .expect("Should have an epoch settings for epoch 3.");
80        assert_eq!(Epoch(3), epoch_settings_record.epoch_settings_id);
81        assert_eq!(
82            ProtocolParameters::new(3, 4, 1.0),
83            epoch_settings_record.protocol_parameters
84        );
85        assert_eq!(
86            CardanoTransactionsSigningConfig {
87                security_parameter: BlockNumber(30),
88                step: BlockNumber(15),
89            },
90            epoch_settings_record.cardano_transactions_signing_config
91        );
92
93        let cursor = connection
94            .fetch(GetEpochSettingsQuery::by_epoch(Epoch(5)).unwrap())
95            .unwrap();
96        assert_eq!(0, cursor.count());
97    }
98}
mithril_aggregator/database/query/epoch_settings/get_epoch_settings.rs

mithril_aggregator/database/query/epoch_settings/
get_epoch_settings.rs
