### Create Simple goworker Worker - Go

Source: https://github.com/benmanns/goworker/blob/master/README.md

This is a complete example of a basic goworker worker that prints its queue and arguments. It defines a worker function, registers it, and starts the worker process.

```Go
package main

import (
	"fmt"
	"github.com/benmanns/goworker"
)

func myFunc(queue string, args ...interface{}) error {
	fmt.Printf("From %s, %v\n", queue, args)
	return nil
}

func init() {
	goworker.Register("MyClass", myFunc)
}

func main() {
	if err := goworker.Work(); err != nil {
		fmt.Println("Error:", err)
	}
}
```

--------------------------------

### Install goworker Package - Shell

Source: https://github.com/benmanns/goworker/blob/master/README.md

Use the standard Go command to fetch and install the goworker library.

```Shell
go get github.com/benmanns/goworker
```

--------------------------------

### Create goworker Worker with Settings - Go

Source: https://github.com/benmanns/goworker/blob/master/README.md

Shows how to configure goworker using a WorkerSettings struct before registering workers and starting the process. This allows customizing Redis connection, queues, concurrency, etc.

```Go
package main

import (
	"fmt"
	"github.com/benmanns/goworker"
)

func myFunc(queue string, args ...interface{}) error {
	fmt.Printf("From %s, %v\n", queue, args)
	return nil
}

func init() {
	settings := goworker.WorkerSettings{
		URI:            "redis://localhost:6379/",
		Connections:    100,
		Queues:         []string{"myqueue", "delimited", "queues"},
		UseNumber:      true,
		ExitOnComplete: false,
		Concurrency:    2,
		Namespace:      "resque:",
		Interval:       5.0,
	}
	goworker.SetSettings(settings)
	goworker.Register("MyClass", myFunc)
}

func main() {
	if err := goworker.Work(); err != nil {
		fmt.Println("Error:", err)
	}
}
```

--------------------------------

### Enqueue Job using Resque - Ruby

Source: https://github.com/benmanns/goworker/blob/master/README.md

Example of how to enqueue a job for a worker class using the Ruby Resque library, compatible with goworker.

```Ruby
class MyClass
  @queue = :myqueue
end

100.times do
  Resque.enqueue MyClass, ['hi', 'there']
end
```

--------------------------------

### Enqueue Job using goworker - Go

Source: https://github.com/benmanns/goworker/blob/master/README.md

Demonstrates how to programmatically enqueue a job onto a Redis queue using the goworker library itself.

```Go
goworker.Enqueue(&goworker.Job{
    Queue: "myqueue",
    Payload: goworker.Payload{
        Class: "MyClass",
        Args: []interface{}{"hi", "there"},
    },
})
```

--------------------------------

### Create goworker Worker with Closure - Go

Source: https://github.com/benmanns/goworker/blob/master/README.md

Demonstrates how to use a closure to create worker functions that share resources or maintain state, such as a database connection pool.

```Go
package main

import (
	"fmt"
	"github.com/benmanns/goworker"
)

func newMyFunc(uri string) (func(queue string, args ...interface{}) error) {
	foo := NewFoo(uri)
	return func(queue string, args ...interface{}) error {
		foo.Bar(args)
		return nil
	}
}

func init() {
	goworker.Register("MyClass", newMyFunc("http://www.example.com/"))
}

func main() {
	if err := goworker.Work(); err != nil {
		fmt.Println("Error:", err)
	}
}
```

--------------------------------

### Enqueue Job using redis-cli - Shell

Source: https://github.com/benmanns/goworker/blob/master/README.md

Use the Redis command-line interface to manually push a job payload onto a Resque-compatible queue for testing goworker.

```Shell
redis-cli -r 100 RPUSH resque:queue:myqueue '{"class":"MyClass","args":["hi","there"]}'
```

--------------------------------

### Import goworker Package - Go

Source: https://github.com/benmanns/goworker/blob/master/README.md

Import the goworker package into your Go project to use its functions and types.

```Go
import "github.com/benmanns/goworker"
```

--------------------------------

### Handle Worker Arguments with Type Assertion - Go

Source: https://github.com/benmanns/goworker/blob/master/README.md

Illustrates how to safely access and convert arguments passed to a worker function using Go's type assertions, handling potential errors.

```Go
// Expecting (int, string, float64)
func myFunc(queue, args ...interface{}) error {
	idNum, ok := args[0].(json.Number)
	if !ok {
		return errorInvalidParam
	}
	id, err := idNum.Int64()
	if err != nil {
		return errorInvalidParam
	}
	name, ok := args[1].(string)
	if !ok {
		return errorInvalidParam
	}
	weightNum, ok := args[2].(json.Number)
	if !ok {
		return errorInvalidParam
	}
	weight, err := weightNum.Float64()
	if err != nil {
		return errorInvalidParam
	}
	doSomething(id, name, weight)
	return nil
}
```

--------------------------------

### Redis Key Format for Failed Job Data

Source: https://github.com/benmanns/goworker/blob/master/README.md

This snippet shows the format of the Redis key where goworker stores information about a job that was being processed by a worker when the process failed unexpectedly (e.g., via KILL signal). The data stored at this key is a JSON object containing the job's queue, run time, and payload.

```Text
resque:worker:<hostname>:<process-id>-<worker-id>:<queues>
```

--------------------------------

### Define Worker Function Signature - Go

Source: https://github.com/benmanns/goworker/blob/master/README.md

Worker functions in goworker must match this specific signature, accepting the queue name and a variadic slice of arguments, returning an error.

```Go
func(string, ...interface{}) error
```

--------------------------------

### Register Worker Function - Go

Source: https://github.com/benmanns/goworker/blob/master/README.md

Register a Go function with goworker, associating it with a specific class name that will be used in job payloads.

```Go
goworker.Register("MyClass", myFunc)
```

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