130 lines
3.8 KiB
Rust
130 lines
3.8 KiB
Rust
use sqlx::{
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postgres::{PgArguments, PgQueryResult, PgRow},
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PgPool, Postgres,
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};
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sea_query::sea_query_driver_postgres!();
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use sea_query_driver_postgres::bind_query;
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use crate::{debug_print, error::*, executor::*, DatabaseConnection, Statement};
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use super::sqlx_common::*;
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pub struct SqlxPostgresConnector;
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pub struct SqlxPostgresPoolConnection {
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pool: PgPool,
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}
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impl SqlxPostgresConnector {
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pub fn accepts(string: &str) -> bool {
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string.starts_with("postgres://")
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}
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pub async fn connect(string: &str) -> Result<DatabaseConnection, DbErr> {
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if let Ok(pool) = PgPool::connect(string).await {
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Ok(DatabaseConnection::SqlxPostgresPoolConnection(
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SqlxPostgresPoolConnection { pool },
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))
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} else {
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Err(DbErr::Conn("Failed to connect.".to_owned()))
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}
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}
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}
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impl SqlxPostgresConnector {
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pub fn from_sqlx_postgres_pool(pool: PgPool) -> DatabaseConnection {
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DatabaseConnection::SqlxPostgresPoolConnection(SqlxPostgresPoolConnection { pool })
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}
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}
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impl SqlxPostgresPoolConnection {
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pub async fn execute(&self, stmt: Statement) -> Result<ExecResult, DbErr> {
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debug_print!("{}", stmt);
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let query = sqlx_query(&stmt);
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if let Ok(conn) = &mut self.pool.acquire().await {
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match query.execute(conn).await {
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Ok(res) => Ok(res.into()),
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Err(err) => Err(sqlx_error_to_exec_err(err)),
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}
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} else {
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Err(DbErr::Exec(
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"Failed to acquire connection from pool.".to_owned(),
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))
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}
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}
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pub async fn query_one(&self, stmt: Statement) -> Result<Option<QueryResult>, DbErr> {
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debug_print!("{}", stmt);
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let query = sqlx_query(&stmt);
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if let Ok(conn) = &mut self.pool.acquire().await {
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match query.fetch_one(conn).await {
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Ok(row) => Ok(Some(row.into())),
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Err(err) => match err {
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sqlx::Error::RowNotFound => Ok(None),
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_ => Err(DbErr::Query(err.to_string())),
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},
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}
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} else {
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Err(DbErr::Query(
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"Failed to acquire connection from pool.".to_owned(),
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))
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}
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}
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pub async fn query_all(&self, stmt: Statement) -> Result<Vec<QueryResult>, DbErr> {
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debug_print!("{}", stmt);
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let query = sqlx_query(&stmt);
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if let Ok(conn) = &mut self.pool.acquire().await {
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match query.fetch_all(conn).await {
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Ok(rows) => Ok(rows.into_iter().map(|r| r.into()).collect()),
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Err(err) => Err(sqlx_error_to_query_err(err)),
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}
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} else {
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Err(DbErr::Query(
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"Failed to acquire connection from pool.".to_owned(),
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))
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}
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}
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}
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impl From<PgRow> for QueryResult {
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fn from(row: PgRow) -> QueryResult {
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QueryResult {
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row: QueryResultRow::SqlxPostgres(row),
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}
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}
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}
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impl From<PgQueryResult> for ExecResult {
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fn from(result: PgQueryResult) -> ExecResult {
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ExecResult {
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result: ExecResultHolder::SqlxPostgres {
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last_insert_id: 0,
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rows_affected: result.rows_affected(),
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},
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}
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}
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}
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pub(crate) fn query_result_into_exec_result(res: QueryResult) -> Result<ExecResult, DbErr> {
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let last_insert_id: i32 = res.try_get("", "last_insert_id")?;
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Ok(ExecResult {
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result: ExecResultHolder::SqlxPostgres {
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last_insert_id: last_insert_id as u64,
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rows_affected: 0,
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},
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})
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}
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fn sqlx_query(stmt: &Statement) -> sqlx::query::Query<'_, Postgres, PgArguments> {
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let mut query = sqlx::query(&stmt.sql);
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if let Some(values) = &stmt.values {
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query = bind_query(query, values);
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}
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query
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}
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