Configure mongo indexing right on your rust structs
Example
use mongo_indexed::doc;
use mongo_indexed_derive::MongoIndexed;
use mongodb::{bson::oid::ObjectId, options::ClientOptions};
use serde::{Deserialize, Serialize};
#[derive(Debug, Serialize, Deserialize, MongoIndexed)]
#[unique_doc_index({ "username": 1, "email": 1 })]
#[collection_name(users)] // By default, this will be the name of the struct it's defined on, in this case 'User'.
pub struct User {
#[serde(rename = "_id")]
pub id: ObjectId,
#[index]
pub username: String,
#[index]
pub email: String,
}
#[tokio::main]
async fn main() -> anyhow::Result<()> {
// instantiate your mongo client
let mongo =
mongodb::Client::with_options(ClientOptions::parse("mongodb://localhost:27017").await?)?;
let db = mongo.database("my-db");
// Since index calls are a no-op if the indexes do not change, your APIs can
// safely use create_indexes = true even when restarting all the time.
// Just be careful if the indexes change and the collection is large.
let create_indexes = true;
// will return a handle to 'users' collection on 'my-db', which has the specified indexes created.
let users = mongo_indexed::collection::<User>(&db, create_indexes).await?;
let user = users.find_one(doc! { "username": "mogh" }, None).await?;
println!("{user:?}");
Ok(())
}
(MoghTech)