# machinery-plugins

This project is intended to provide multi broker, lock, backend for the [RichardKnop/machinery](https://github.com/RichardKnop/machinery) library. About
Machinery is an asynchronous task queue/job queue based on distributed message passing. This plugins library offers additional functionalities and tools to help you better utilize and customize Machinery.

## Features
This library provides the following features:

- `Brokers`: add etcd / mysql
- `Locks`： add etcd / mysql
- `Backends`: add etcd / mysql

you can combine whatever you want

## Quick Start

Install the library:

```
go get git.ifooth.com/common/machinery-plugins@latest
```

Import the library in your code and use it to create tasks:


```go
import (
    "github.com/RichardKnop/machinery/v2"
    redisbackend "github.com/RichardKnop/machinery/v2/backends/redis"
    eagerlock "github.com/RichardKnop/machinery/v2/locks/eager"
    etcdbroker "git.ifooth.com/common/machinery-plugins/brokers/etcd"
)

func main() {
    // Create server instance
	// broker := redisbroker.NewGR(cnf, []string{"localhost:6379"}, 1)
	broker, err := etcdbroker.New(cnf, "http://127.0.0.1:2379")
	if err != nil {
		return nil, err
	}

	lock := eagerlock.New()
	backend := redisbackend.NewGR(cnf, []string{"localhost:6379"}, 3)
	server := machinery.NewServer(cnf, broker, backend, lock)
}
```

## Contributing
We welcome contributions in any form! If you have any issues, suggestions, or wish to add new features, let us know by creating an issue or pull request.

## License
machinery-plugins is based on the Apache 2.0 protocol. Please refer to [LICENSE](./LICENSE) for details.


## 设计
push -> pending_tasks/{queue}/{task_uuid}
handle -> 获取keys-only, 判断是否有consumer，如果没有，原子添加consumer -> 成功 -> handler -> delete(每次全量key N，可以对吧lock)

delay -> delay_tasks/r{xx}-taskuuid
handlr -> 按key排序，获取最新的一个(可以大于当前时间) -> 原子put/delete操作 -> done (性能没有问题， 多个服务会有冲突,最多N-1，可以对比Lock)