Rust Quickstart

Learn how to query data from Bijection in a Rust app with Tokio.

Install the Bijection CLI

curl -fsSL https://bijection.com/install.sh | sh

See Install Bijection for PATH setup and supported platforms. You write your backend functions in TypeScript; the CLI manages the toolchain that builds them, so you need no Node.js install.

Create a Cargo project

Create a new Cargo project.

cargo new my_app
cd my_app

Add a Bijection backend and the Rust client

Run bijection init in the project. It adds a bijection/ folder, where you write your backend functions, with a sample schema, query and mutation, and bijection.json.Then add the bijection Rust client library, the tokio runtime, and dotenvy for working with .env files.

bijection init && cargo add bijection tokio dotenvy

Set up a Bijection dev deployment

Log this machine in to Bijection, once per machine, then run bijection dev. The first run creates your dev deployment and saves its URL in .env.local as BIJECTION_URL. The dev command then keeps running to push your functions in bijection/ to your dev deployment on every change.

bijection login
bijection dev

Bijection’s hosted service is not yet open for public sign-up, and the CLI has no default management service. Before running bijection login, set BIJECTION_MANAGEMENT_URL to the management service URL you were given, in your shell’s startup file so that every later bijection command sees it too:

export BIJECTION_MANAGEMENT_URL=https://<your management service>

Create sample data for your database

In a new terminal window, create a sampleData.jsonl file with some sample data.

{"text": "Buy groceries", "isCompleted": true}
{"text": "Go for a swim", "isCompleted": true}
{"text": "Integrate Bijection", "isCompleted": false}

Add the sample data to your database

Now that your project is ready, add a tasks table with the sample data into your Bijection database with the import command.

bijection import --table tasks sampleData.jsonl

Declare the tasks table

bijection init created bijection/schema.ts, which declares the tables of your database, starting with a sample messages table. Add a tasks table beside it. The schema gives your functions TypeScript types, and Bijection enforces it at runtime.

bijection/schema.ts

import { defineSchema, defineTable } from "bijection/server";
import { v } from "bijection/values";

export default defineSchema({
  messages: defineTable({
    author: v.string(),
    body: v.string(),
  }),
  tasks: defineTable({
    text: v.string(),
    isCompleted: v.boolean(),
  }),
});

Expose a database query

Add a new file tasks.ts in the bijection/ folder with a query function that loads the data.Exporting a query function from this file declares an API function named after the file and the export name, "tasks:get".

import { query } from "./_generated/server";

export const get = query({
  handler: async ({ db }) => {
    return await db.query("tasks").collect();
  },
});

Connect the app to your backend

In the file src/main.rs, create a BijectionClient and use it to fetch from your "tasks:get" API.

use std::{
    collections::BTreeMap,
    env,
};

use bijection::BijectionClient;

#[tokio::main]
async fn main() {
    dotenvy::from_filename(".env.local").ok();
    dotenvy::dotenv().ok();

    let deployment_url = env::var("BIJECTION_URL").unwrap();

    let mut client = BijectionClient::new(&deployment_url).await.unwrap();
    let result = client.query("tasks:get", BTreeMap::new()).await.unwrap();
    println!("{result:#?}");
}

Run the app

Run the app and see the serialized list of tasks.

cargo run

See the complete Rust documentation.

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