Add container simulation with PostgreSQL and SQLite support

apps/container/src/db.rs

@@ -0,0 +1,59 @@
+pub mod config;
+pub mod postgresql;
+pub mod sqlite;
+
+use async_trait::async_trait;
+use shared::db_type::DBType;
+use std::future::Future;
+use std::{pin::Pin, sync::Arc};
+use url::Host;
+
+use testcontainers::{ContainerAsync, GenericImage, TestcontainersError};
+
+use crate::{ConfigInfoType, WithContainer, WithoutContainer};
+
+pub type UnStartedContainer =
+    Pin<Box<dyn Future<Output = Result<ContainerAsync<GenericImage>, TestcontainersError>> + Send>>;
+
+pub type DBConfigInfoType = ConfigInfoType<ContainerizedDBInfo, PreExistingDBInfo>;
+
+#[derive(Clone)]
+pub struct PreExistingDBInfo {
+    pub db_type: DBType,
+    pub url: String,
+    pub on_delete: Arc<dyn Fn() + Send + Sync>,
+}
+
+impl WithoutContainer for PreExistingDBInfo {
+    fn on_delete(&self) {
+        (self.on_delete)();
+    }
+}
+
+#[derive(Clone)]
+pub struct ContainerizedDBInfo {
+    pub db_type: DBType,
+    pub container: Arc<ContainerAsync<GenericImage>>,
+    pub container_name: String,
+    pub database_name: String,
+    pub host: Host,
+    pub port: u16,
+    pub url: String,
+    pub user: String,
+    pub password: String,
+}
+
+impl WithContainer for ContainerizedDBInfo {
+    fn container(&self) -> &Arc<ContainerAsync<GenericImage>> {
+        &self.container
+    }
+}
+
+#[async_trait]
+pub trait DBInfo<T> {
+    async fn new(config: Option<T>) -> Self
+    where
+        Self: Sized;
+    async fn get_db_container_config_info(&self) -> DBConfigInfoType;
+    fn get_unstarted_container(&self) -> Result<UnStartedContainer, ()>;
+}