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use serde::{Serialize};
use std::fmt::{Display, Formatter, Result as FmtResult};
use serde_json::{to_string_pretty};
use std::collections::HashMap;
use postgres::Transaction;
use unidb::model::Value;
use unidb::build_sql;
use crate::connect_db;
#[derive(Debug, Serialize)]
pub enum PgDaoError {
ConnectionError(String),
ExecutionError(String),
TransactionCreationError(String),
CommitError(String),
RowError(String),
Error(String),
}
impl Display for PgDaoError {
fn fmt(&self, f: &mut Formatter) -> FmtResult {
let error = to_string_pretty(self).unwrap();
error!("{}", &error);
write!(f, "{}", error)
}
}
pub struct UpsertMapInput {
pub sql_id: String,
pub data: HashMap<String, Value>,
}
fn execute_uncommitted(sql: &str, transaction: &mut Transaction) -> Result<usize, PgDaoError> {
Ok(match transaction.batch_execute(sql) {
Ok(t) => 1,
Err(e) => {
error!("{}\n{:?}", sql, e);
return Err(PgDaoError::ExecutionError(e.to_string()))
}
})
}
fn batch_execute_uncommitted(batch_sql: &str, transaction: &mut Transaction) -> Result<(), PgDaoError> {
Ok(match transaction.batch_execute(batch_sql) {
Ok(t) => (),
Err(e) => {
error!("{}\n{:?}", batch_sql, e);
return Err(PgDaoError::ExecutionError(e.to_string()))
}
})
}
pub fn execute_multi_tables_dao(input: Vec<UpsertMapInput>) -> Result<usize, PgDaoError>{
let count = match connect_db() {
Ok(mut conn) => {
let mut transaction =
match conn.transaction() {
Ok(t) => t,
Err(e) => {
error!("{:?}", e);
return Err(PgDaoError::TransactionCreationError(e.to_string()))
}
};
let mut count = input.len();
let mut batch_sql = String::new();
for item in input {
let sql = build_sql(&item.sql_id, "",&item.data);
batch_sql = format!("{}{}{}", batch_sql, sql, ";");
}
match batch_execute_uncommitted(&batch_sql, &mut transaction) {
Ok(t) => (),
Err(e) => {
error!("{:?}", e);
&transaction.rollback().unwrap_or_default();
return Err(e);
}
};
match &transaction.commit() {
Ok(_t) => {},
Err(e) => {
error!("{:?}", e);
return Err(PgDaoError::CommitError(e.to_string()))
}
}
count
}
Err(e) => {
error!("{:?}", e);
return Err(PgDaoError::ConnectionError(e.to_string()))
}
};
Ok(count)
}
pub fn execute_dao(sql_id: &str, item: &HashMap<String, Value>) -> Result<usize, PgDaoError>{
let count = match connect_db() {
Ok(mut conn) => {
let mut count = 0;
let mut transaction =
match conn.transaction() {
Ok(t) => t,
Err(e) => {
error!("{:?}", e);
return Err(PgDaoError::TransactionCreationError(e.to_string()))
}
};
let sql = build_sql(sql_id, "",item);
match execute_uncommitted(&sql, &mut transaction) {
Ok(t) => {
count = count + t;
},
Err(e) => {
error!("{:?}", e);
&transaction.rollback().unwrap_or_default();
return Err(e);
}
};
match &transaction.commit() {
Ok(_t) => {},
Err(e) => {
error!("{:?}", e);
return Err(PgDaoError::CommitError(e.to_string()))
}
}
count
}
Err(e) => {
error!("{:?}", e);
return Err(PgDaoError::ConnectionError(e.to_string()))
}
};
Ok(count)
}
pub fn execute_multi_entries_dao(sql_id: &str, list : Vec<HashMap<String, Value>>) -> Result<usize, PgDaoError>{
let count = match connect_db() {
Ok(mut conn) => {
let mut transaction =
match conn.transaction() {
Ok(t) => t,
Err(e) => {
error!("{:?}", e);
return Err(PgDaoError::TransactionCreationError(e.to_string()))
}
};
let mut count = list.len();
let mut batch_sql = String::new();
for item in list {
let sql = build_sql(sql_id, "",&item);
batch_sql = format!("{}{}{}", batch_sql, sql, ";");
}
match batch_execute_uncommitted(&batch_sql, &mut transaction) {
Ok(t) => (),
Err(e) => {
error!("{:?}", e);
&transaction.rollback().unwrap_or_default();
return Err(e);
}
};
match &transaction.commit() {
Ok(_t) => {},
Err(e) => {
error!("{:?}", e);
return Err(PgDaoError::CommitError(e.to_string()))
}
}
count
}
Err(e) => {
error!("{:?}", e);
return Err(PgDaoError::ConnectionError(e.to_string()))
}
};
Ok(count)
}