Rocket/contrib/sync_db_pools
Sergio Benitez 5a4e66ec43 Split 'rocket_contrib' into distinct crates.
This follows the completed graduation of stable contrib features into
core, removing 'rocket_contrib' in its entirety in favor of two new
crates. These crates are versioned independently of Rocket's core
libraries, allowing upgrades to dependencies without consideration for
versions in core libraries.

'rocket_dyn_templates' replaces the contrib 'templates' features. While
largely a 1-to-1 copy, it makes the following changes:

  * the 'tera_templates' feature is now 'tera'
  * the 'handlebars_templates' feature is now 'handlebars'
  * fails to compile if neither 'tera' nor 'handlebars' is enabled

'rocket_sync_db_pools' replaces the contrib 'database' features. It
makes no changes to the replaced features except that the `database`
attribute is properly documented at the crate root.
2021-05-24 22:57:51 -07:00
..
codegen Split 'rocket_contrib' into distinct crates. 2021-05-24 22:57:51 -07:00
lib Split 'rocket_contrib' into distinct crates. 2021-05-24 22:57:51 -07:00
README.md Split 'rocket_contrib' into distinct crates. 2021-05-24 22:57:51 -07:00

sync_db_pools ci.svg crates.io docs.svg

This crate provides traits, utilities, and a procedural macro for configuring and accessing database connection pools in Rocket. This implementation is backed by r2d2 and exposes connections through request guards.

Usage

First, enable the feature corresponding to your database type:

[dependencies.rocket_sync_db_pools]
version = "0.1.0-dev"
default-features = false
features = ["diesel_sqlite_pool"]

A full list of supported databases and their associated feature names is available in the crate docs. In whichever configuration source you choose, configure a databases dictionary with a key for each database, here sqlite_logs in a TOML source:

[default.databases]
sqlite_logs = { url = "/path/to/database.sqlite" }

In your application's source code:

#[macro_use] extern crate rocket;

use rocket_sync_db_pools::{database, diesel};

#[database("sqlite_logs")]
struct LogsDbConn(diesel::SqliteConnection);

#[get("/logs/<id>")]
async fn get_logs(conn: LogsDbConn, id: usize) -> Result<Logs> {
    conn.run(|c| Logs::by_id(c, id)).await
}

#[launch]
fn rocket() -> _ {
    rocket::build().attach(LogsDbConn::fairing())
}

See the crate docs for full details.