sqlx-adapter

sqlx-adapter is the Sqlx adapter for casbin-rs. With this library, Casbin can load policy from Sqlx supported database or save policy to it with fully asynchronous support.

Based on Sqlx, The current supported databases are:

• MySQL
• PostgreSQL
• SQLite

Notice

In order to unify the database table name in Casbin ecosystem, we decide to use casbin_rule instead of casbin_rules from version 0.4.0. If you are using old version sqlx-adapter in your production environment, please use following command and update sqlx-adapter version:

# MySQL & PostgreSQL & SQLite
ALTER TABLE casbin_rules RENAME TO casbin_rule;

Install

Add the following to Cargo.toml:

For MySQL:

sqlx-adapter = { version = "1.8.0", default-features = false, features = ["mysql", "runtime-tokio-native-tls"]}
tokio = { version = "1.1.1", features = ["macros"] }

For PostgreSQL:

sqlx-adapter = { version = "1.8.0", default-features = false, features = ["postgres", "runtime-tokio-native-tls"]}
tokio = { version = "1.1.1", features = ["macros"] }

For SQLite:

sqlx-adapter = { version = "1.8.0", default-features = false, features = ["sqlite", "runtime-tokio-native-tls"]}
tokio = { version = "1.1.1", features = ["macros"] }

Warning: tokio v1.0 or later is supported from sqlx-adapter v0.4.0, we recommend that you upgrade the relevant components to ensure that they work properly. The last version that supports tokio v0.2 is sqlx-adapter v0.3.0 , you can choose according to your needs.

Configure

1. Set up database environment

   You must prepare the database environment so that Sqlx can do static check with queries during compile time. One convenient option is using docker to get your database environment ready:

   ```bash

   !/bin/bash

   DIS=$(lsb_release -is)

   command -v docker > /dev/null 2>&1 || { echo "Please install docker before running this script." && exit 1; }

   if [ $DIS == "Ubuntu" ] || [ $DIS == "LinuxMint" ]; then sudo apt install -y \ libpq-dev \ libmysqlclient-dev \ postgresql-client \ mysql-client-core;

   elif [ $DIS == "Deepin" ]; then sudo apt install -y \ libpq-dev \ libmysql++-dev \ mysql-client \ postgresql-client; elif [ $DIS == "ArchLinux" ] || [ $DIS == "ManjaroLinux" ]; then sudo pacman -S libmysqlclient \ postgresql-libs \ mysql-clients \; else echo "Unsupported system: $DIS" && exit 1; fi

   docker run -itd \ --restart always \ -e POSTGRES_USER=casbin_rs \ -e POSTGRES_PASSWORD=casbin_rs \ -e POSTGRES_DB=casbin \ -p 5432:5432 \ -v /srv/docker/postgresql:/var/lib/postgresql \ postgres:11;

   docker run -itd \ --restart always \ -e MYSQL_ALLOW_EMPTY_PASSWORD=yes \ -e MYSQL_USER=casbin_rs \ -e MYSQL_PASSWORD=casbin_rs \ -e MYSQL_DATABASE=casbin \ -p 3306:3306 \ -v /srv/docker/mysql:/var/lib/mysql \ mysql:8 \ --default-authentication-plugin=mysql_native_password;

   ```

2. Create table casbin_rule

   ```bash

   PostgreSQL

   psql postgres://casbin_rs:casbin_rs@127.0.0.1:5432/casbin -c "CREATE TABLE IF NOT EXISTS casbin_rule ( id SERIAL PRIMARY KEY, ptype VARCHAR NOT NULL, v0 VARCHAR NOT NULL, v1 VARCHAR NOT NULL, v2 VARCHAR NOT NULL, v3 VARCHAR NOT NULL, v4 VARCHAR NOT NULL, v5 VARCHAR NOT NULL, CONSTRAINT unique_key_sqlx_adapter UNIQUE(ptype, v0, v1, v2, v3, v4, v5) );"

   MySQL

   mysql -h 127.0.0.1 -u casbin_rs -pcasbin_rs casbin

   CREATE TABLE IF NOT EXISTS casbin_rule ( id INT NOT NULL AUTO_INCREMENT, ptype VARCHAR(12) NOT NULL, v0 VARCHAR(128) NOT NULL, v1 VARCHAR(128) NOT NULL, v2 VARCHAR(128) NOT NULL, v3 VARCHAR(128) NOT NULL, v4 VARCHAR(128) NOT NULL, v5 VARCHAR(128) NOT NULL, PRIMARY KEY(id), CONSTRAINT unique_key_sqlx_adapter UNIQUE(ptype, v0, v1, v2, v3, v4, v5) ) ENGINE=InnoDB DEFAULT CHARSET=utf8;

# SQLite touch casbin.db

sqlite3 casbin.db -cmd "CREATE TABLE IF NOT EXISTS casbin_rule ( id INTEGER PRIMARY KEY, ptype VARCHAR(12) NOT NULL, v0 VARCHAR(128) NOT NULL, v1 VARCHAR(128) NOT NULL, v2 VARCHAR(128) NOT NULL, v3 VARCHAR(128) NOT NULL, v4 VARCHAR(128) NOT NULL, v5 VARCHAR(128) NOT NULL, CONSTRAINT unique_key_sqlx_adapter UNIQUE(ptype, v0, v1, v2, v3, v4, v5) );" ```

1. Configure env

   Rename sample.env to .env and put DATABASE_URL, POOL_SIZE inside

   ```bash DATABASE_URL=postgres://casbin_rs:casbin_rs@localhost:5432/casbin

   DATABASE_URL=mysql://casbin_rs:casbin_rs@localhost:3306/casbin

   DATABASE_URL=sqlite:casbin.db

   POOL_SIZE=8 ```

   Or you can export DATABASE_URL, POOL_SIZE

   bash export DATABASE_URL=postgres://casbin_rs:casbin_rs@localhost:5432/casbin export POOL_SIZE=8

Example

use sqlx_adapter::casbin::prelude::*;
use sqlx_adapter::casbin::Result;
use sqlx_adapter::SqlxAdapter;

#[tokio::main]
async fn main() -> Result<()> {
    let m = DefaultModel::from_file("examples/rbac_model.conf").await?;

    let a = SqlxAdapter::new("postgres://casbin_rs:casbin_rs@127.0.0.1:5432/casbin", 8).await?;
    let mut e = Enforcer::new(m, a).await?;

    Ok(())
}

Features

• postgres
• mysql
• sqlite

Attention: postgres, mysql, sqlite are mutual exclusive which means that you can only activate one of them.