8000 Added inner transaction impl by chandr-andr · Pull Request #134 · psqlpy-python/psqlpy · GitHub
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Added inner transaction impl #134

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Merged
merged 4 commits into from
May 13, 2025
Merged

Added inner transaction impl #134

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c793b32
Added inner transaction impl
chandr-andr May 13, 2025
82b9fc5
Made small use corrections
chandr-andr May 13, 2025
b260ba3
Made small use corrections
chandr-andr May 13, 2025
519c4d4
Added Portal impl
chandr-andr May 13, 2025
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Added inner transaction impl
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@chandr-andr
chandr-andr committed May 13, 2025
commit c793b32f747ce5b3be4aace8f8f91ebac019063a
83 changes: 83 additions & 0 deletions src/driver/inner_transaction.rs
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use deadpool_postgres::Transaction as dp_Transaction;
use postgres_types::ToSql;
use tokio_postgres::{Portal, Row, ToStatement, Transaction as tp_Transaction};

use crate::exceptions::rust_errors::PSQLPyResult;

pub enum PsqlpyTransaction {
PoolTrans(dp_Transaction<'static>),
SingleConnTrans(tp_Transaction<'static>)
}

impl PsqlpyTransaction {
async fn commit(self) -> PSQLPyResult<()> {
match self {
PsqlpyTransaction::PoolTrans(p_txid) => Ok(p_txid.commit().await?),
PsqlpyTransaction::SingleConnTrans(s_txid) => Ok(s_txid.commit().await?)
}
}

async fn rollback(self) -> PSQLPyResult<()> {
match self {
PsqlpyTransaction::PoolTrans(p_txid) => Ok(p_txid.rollback().await?),
PsqlpyTransaction::SingleConnTrans(s_txid) => Ok(s_txid.rollback().await?)
}
}

async fn savepoint(&mut self, sp_name: &str) -> PSQLPyResult<()> {
match self {
PsqlpyTransaction::PoolTrans(p_txid) => {
p_txid.savepoint(sp_name).await?;
Ok(())
},
PsqlpyTransaction::SingleConnTrans(s_txid) => {
s_txid.savepoint(sp_name).await?;
Ok(())
}
}
}

async fn release_savepoint(&self, sp_name: &str) -> PSQLPyResult<()> {
match self {
PsqlpyTransaction::PoolTrans(p_txid) => {
p_txid.batch_execute(format!("RELEASE SAVEPOINT {sp_name}").as_str()).await?;
Ok(())
},
PsqlpyTransaction::SingleConnTrans(s_txid) => {
s_txid.batch_execute(format!("RELEASE SAVEPOINT {sp_name}").as_str()).await?;
Ok(())
}
}
}

async fn rollback_savepoint(&self, sp_name: &str) -> PSQLPyResult<()> {
match self {
PsqlpyTransaction::PoolTrans(p_txid) => {
p_txid.batch_execute(format!("ROLLBACK TO SAVEPOINT {sp_name}").as_str()).await?;
Ok(())
},
PsqlpyTransaction::SingleConnTrans(s_txid) => {
s_txid.batch_execute(format!("ROLLBACK TO SAVEPOINT {sp_name}").as_str()).await?;
Ok(())
}
}
}

async fn bind<T>(&self, statement: &T, params: &[&(dyn ToSql + Sync)]) -> PSQLPyResult<Portal>
where
T: ?Sized + ToStatement {
match self {
PsqlpyTransaction::PoolTrans(p_txid) => Ok(p_txid.bind(statement, params).await?),
PsqlpyTransaction::SingleConnTrans(s_txid) => Ok(s_txid.bind(statement, params).await?)
}
}

pub async fn query_portal(&self, portal: &Portal, size: i32) -> PSQLPyResult<Vec<Row>> {
match self {
PsqlpyTransaction::PoolTrans(p_txid)
=> Ok(p_txid.query_portal(portal, size).await?),
PsqlpyTransaction::SingleConnTrans(s_txid)
=> Ok(s_txid.query_portal(portal, size).await?)
}
}
}
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