package utl

// Job interface
type IJob interface {
	Exec(interface{}) error
}

// Job in function style.
// It also implements the IJob interface.
type IJobFn func(interface{}) error

func (fn IJobFn) Exec(inf interface{}) error {
	return fn(inf)
}

// Type of chan of Jobs
type TJobChan chan *Job

// Chan of Job chan
type TJobPool chan TJobChan

// Job object
// composed with a job interface and its parameters
type Job struct {
	param interface{}
	job   IJob
}

// Job constructor
func NewJob(job IJob, param interface{}) *Job {
	return &Job{
		param: param,
		job:   job,
	}
}

// Job executor
func (self *Job) Do() error {
	return self.job.Exec(self.param)
}