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casbin-redis-adapter

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Redis adapter for Casbin

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Redis Adapter
====

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Redis Adapter is the [Redis](https://redis.io/) adapter for [Casbin](https://github.com/casbin/casbin). With this library, Casbin can load policy from Redis or save policy to it.

## Installation

go get github.com/casbin/redis-adapter/v3

## Configuration Options

The `Config` struct supports the following options:

- `Network` (string): Network type, e.g., "tcp", "unix" (required when not using Pool)
- `Address` (string): Redis server address, e.g., "127.0.0.1:6379" (required when not using Pool)
- `Key` (string): Redis key to store Casbin rules (default: "casbin_rules")
- `Username` (string): Username for Redis authentication (optional)
- `Password` (string): Password for Redis authentication (optional)
- `TLSConfig` (*tls.Config): TLS configuration for secure connections (optional)
- `Pool` (*redis.Pool): Existing Redis connection pool (optional, if provided, other connection options are ignored)

## Usage Examples

### Basic Usage

```go
package main

import (
	"github.com/casbin/casbin/v2"
	"github.com/casbin/redis-adapter/v3"
)

func main() {
	// Recommended approach using Config
	config := &redisadapter.Config{Network: "tcp", Address: "127.0.0.1:6379"}
	a, _ := redisadapter.NewAdapter(config)

// With password authentication
	// config := &redisadapter.Config{Network: "tcp", Address: "127.0.0.1:6379", Password: "123"}
	// a, _ := redisadapter.NewAdapter(config)

// With user credentials
	// config := &redisadapter.Config{Network: "tcp", Address: "127.0.0.1:6379", Username: "user", Password: "pass"}
	// a, _ := redisadapter.NewAdapter(config)

// With TLS configuration
	// var clientTLSConfig tls.Config
	// ...
	// config := &redisadapter.Config{Network: "tcp", Address: "127.0.0.1:6379", Username: "testAccount", Password: "123456", TLSConfig: &clientTLSConfig}
	// a, _ := redisadapter.NewAdapter(config)

e, _ := casbin.NewEnforcer("examples/rbac_model.conf", a)

// Load the policy from DB.
	e.LoadPolicy()

// Check the permission.
	e.Enforce("alice", "data1", "read")

// Modify the policy.
	// e.AddPolicy(...)
	// e.RemovePolicy(...)

// Save the policy back to DB.
	e.SavePolicy()
}
```

### With Connection Pool

```go
package main

import (
	"github.com/casbin/casbin/v2"
	"github.com/casbin/redis-adapter/v3"
	"github.com/gomodule/redigo/redis"
)

func main() {
	pool := &redis.Pool{Dial: func() (redis.Conn, error) { return redis.Dial("tcp", "127.0.0.1:6379") }}
	config := &redisadapter.Config{Pool: pool, Key: "casbin_rules"}
	a, _ := redisadapter.NewAdapter(config)

e, _ := casbin.NewEnforcer("examples/rbac_model.conf", a)
	
	// Load the policy from DB.
	e.LoadPolicy()

// Check the permission.
	e.Enforce("alice", "data1", "read")

// Save the policy back to DB.
	e.SavePolicy()
}
```

## Getting Help

- [Casbin](https://github.com/casbin/casbin)

## License

This project is under Apache 2.0 License. See the [LICENSE](LICENSE) file for the full license text.

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