framework-cqrs-lib 0.3.1

handle state-machine with data persist in journal and store mongo for restfull actix api
Documentation 
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use async_trait::async_trait;
use futures::TryStreamExt;
use mongodb::{Client, Collection};
use mongodb::bson::doc;
use serde::de::DeserializeOwned;
use serde::Serialize;

use crate::cqrs::core::daos::{DAO, ReadOnlyDAO, WriteOnlyDAO};
use crate::cqrs::core::repositories::query::Query;
use crate::cqrs::models::errors::{Error, ResultErr};

pub struct MongoDAO<DBO>
where
    DBO: Send + Sync,
{
    collection: Collection<DBO>,
}

impl<DBO> MongoDAO<DBO>
where
    DBO: Send + Sync,
{
    pub async fn new(dbname: &str, name: &str) -> Self {
        let uri = std::env::var("MONGO_URI").unwrap();
        let client: Client = Client::with_uri_str(uri).await.unwrap();
        let db = client.database(dbname);
        let collection: Collection<DBO> = db.collection(name);
        Self { collection }
    }
}

#[async_trait]
impl<DBO> DAO<DBO, String> for MongoDAO<DBO>
where
    DBO: Serialize + DeserializeOwned + Send + Sync,
{}

#[async_trait]
impl<DBO> ReadOnlyDAO<DBO, String> for MongoDAO<DBO>
where
    DBO: DeserializeOwned + Send + Sync,
{
    async fn fetch_one(&self, id: &String) -> ResultErr<Option<DBO>> {
        let filter = doc! {"id": id};
        self.collection
            .find_one(filter)
            .await
            .map_err(|err| Error::Simple(err.to_string()))
    }

    async fn fetch_all(&self, query: Query) -> ResultErr<Vec<DBO>> {
        self.find_all(query).await
            .map_err(|err| Error::Simple(err.to_string()))
    }
}

#[async_trait]
impl<DBO> WriteOnlyDAO<DBO, String> for MongoDAO<DBO>
where
    DBO: Serialize + Send + Sync
{
    async fn insert(&self, entity: &DBO, entity_id: &String) -> ResultErr<String> {
        self.collection
            .insert_one(entity)
            .await
            .map_err(|err| Error::Simple(err.to_string()))
            .map(|_| entity_id.clone())
    }

    async fn update(&self, id: &String, entity: &DBO) -> ResultErr<String> {
        let filter = doc! { "id": id };
        self.collection
            .replace_one(filter, entity)
            .await
            .map(|_| id.clone())
            .map_err(|err| Error::Simple(err.to_string()))
    }

    // async fn delete(&self, id: &String) -> ResultErr<String> {
    //     let filter = doc! { "id": id };
    //     self.collection.delete_one(filter).await
    //         .map(|_| id.clone())
    //         .map_err(|err| Error::Simple(err.to_string()))
    // }
}

impl<DBO> MongoDAO<DBO>
where
    DBO: DeserializeOwned + Send + Sync,
{
    async fn find_all(&self, query: Query) -> Result<Vec<DBO>, mongodb::error::Error> {
        Ok(
            self.collection
                .find(query.into())
                .await?
                .try_collect::<Vec<DBO>>()
                .await.unwrap()
        )
    }
}