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https://github.com/wang502/gores
:construction_worker: Redis-backed library for creating background jobs in Go. Placing jobs in multiple queues, and process them later asynchronously.
https://github.com/wang502/gores
asynchronously dispatch enqueue go message-queue microservice redis workers
Last synced: about 2 months ago
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:construction_worker: Redis-backed library for creating background jobs in Go. Placing jobs in multiple queues, and process them later asynchronously.
- Host: GitHub
- URL: https://github.com/wang502/gores
- Owner: wang502
- License: mit
- Created: 2016-12-26T21:30:06.000Z (over 7 years ago)
- Default Branch: master
- Last Pushed: 2018-03-12T02:34:13.000Z (over 6 years ago)
- Last Synced: 2024-06-19T00:16:19.564Z (3 months ago)
- Topics: asynchronously, dispatch, enqueue, go, message-queue, microservice, redis, workers
- Language: Go
- Homepage:
- Size: 85 KB
- Stars: 138
- Watchers: 14
- Forks: 14
- Open Issues: 3
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
- awesome-list-microservice - gores - backed library for creating background jobs in Go. Placing jobs in multiple queues, and process them later asynchronously. (workers)
README
# Gores [](https://travis-ci.org/wang502/gores) [](https://goreportcard.com/report/github.com/wang502/gores)
An asynchronous job execution system based on Redis
## Installation
Get the package
```
$ go get github.com/wang502/gores/gores
```
Import the package
```go
import "github.com/wang502/gores/gores"
```
## Usage
### Start local Redis server
```
$ git clone [email protected]:antirez/redis.git
$ cd redis
$ ./src/redis-server
```
### Configuration
Add a config.json in your project folder
```json
{
"RedisURL": "127.0.0.1:6379",
"RedisPassword": "mypassword",
"BlpopMaxBlockTime" : 1,
"MaxWorkers": 2,
"Queues": ["queue1", "queue2"],
"DispatcherTimeout": 5,
"WorkerTimeout": 5
}
```
- ***RedisURL***: Redis server address. If you run in a local Redis, the dafault host is ```127.0.0.1:6379```
- ***RedisPassword***: Redis password. If the password is not set, then password can be any string.
- ***BlpopMaxBlockTime***: Blocking time when calling BLPOP command in Redis.
- ***MaxWorkers***: Maximum number of concurrent workers, each worker is a separate goroutine that execute specific task on the fetched item.
- ***Queues***: Array of queue names on Redis message broker.
- ***DispatcherTimeout***: Duration dispatcher will wait to dispatch new job before quitting.
- ***WorkerTimeout***: Duration worker will wait to process new job before quitting.
Initialize config
```go
configPath := flag.String("c", "config.json", "path to configuration file")
flag.Parse()
config, err := gores.InitConfig(*configPath)
```
### Enqueue job to Redis queue
A job is a Go map. It is required to have several keys:
- ***Name***: name of the item to enqueue, items with different names are mapped to different tasks.
- ***Queue***: name of the queue you want to put the item in.
- ***Args***: the required arguments that you need in order for the workers to execute those tasks.
- ***Enqueue_timestamp***: the Unix timestamp of when the item is enqueued.
```go
gores := gores.NewGores(config)
job := map[string]interface{}{
"Name": "Rectangle",
"Queue": "TestJob",
"Args": map[string]interface{}{
"Length": 10,
"Width": 10,
},
"Enqueue_timestamp": time.Now().Unix(),
}
err = gores.Enqueue(job)
if err != nil {
log.Fatalf("ERROR Enqueue item to Gores")
}
```
```
$ go run main.go -c ./config.json -o produce
```
### Define tasks
```go
package tasks
// task for item with 'Name' = 'Rectangle'
// calculating the area of an rectangle by multiplying Length with Width
func CalculateArea(args map[string]interface{}) error {
var err error
length := args["Length"]
width := args["Width"]
if length == nil || width == nil {
err = errors.New("Map has no required attributes")
return err
}
fmt.Printf("The area is %d\n", int(length.(float64)) * int(width.(float64)))
return err
}
```
### Launch workers to consume items and execute tasks
```go
tasks := map[string]interface{}{
"Item": tasks.PrintItem,
"Rectangle": tasks.CalculateArea,
}
gores.Launch(config, &tasks)
```
```
$ go run main.go -c ./config.json -o consume
```
The output will be:
```
The rectangle area is 100
```
### Info about processed/failed job
```go
gores := gores.NewGores(config)
if gores == nil {
log.Fatalf("gores is nil")
}
info, err := gores.Info()
if err != nil {
log.Fatal(err)
}
for k, v := range info {
switch v.(type) {
case string:
fmt.Printf("%s : %s\n", k, v)
case int:
fmt.Printf("%s : %d\n", k, v)
case int64:
fmt.Printf("%s : %d\n", k, v)
}
}
```
The output will be:
```
Gores Info:
queues : 2
workers : 0
failed : 0
host : 127.0.0.1:6379
pending : 0
processed : 1
```
## Contribution
Please feel free to suggest new features. Also open to pull request!