Programming language: Go
License: MIT License

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Golang client library for adding support for interacting and monitoring Celery workers and tasks.

It provides functionality to place tasks on the task queue, as well as monitor both task and worker events.


This library depends upon the following packages:

  • github.com/streadway/amqp
  • github.com/sirupsen/logrus
  • github.com/nu7hatch/gouuid
  • github.com/mailru/easyjson

Install easyjson

$ go get -u github.com/mailru/easyjson/...


Installation: go get github.com/svcavallar/celeriac.v1

This imports a new namespace called celeriac

package main

import (


func main() {
    taskBrokerURI := "amqp://user:pass@localhost:5672/vhost"

    // Connect to RabbitMQ task queue
    TaskQueueMgr, err := celeriac.NewTaskQueueMgr(taskBrokerURI)
    if err != nil {
        log.Printf("Failed to connect to task queue: %v", err)

    log.Printf("Service connected to task queue - (URL: %s)", taskBrokerURI)

    // Go routine to monitor the Celery events emitted on the celeriac events channel
    go func() {
        for {
            select {
                ev := <-TaskQueueMgr.Monitor.EventsChannel

                if ev != nil {

                    if x, ok := ev.(*celeriac.WorkerEvent); ok {
                        log.Printf("Celery Event Channel: Worker event - %s [Hostname]: %s", x.Type, x.Hostname)
                    } else if x, ok := ev.(*celeriac.TaskEvent); ok {
                        log.Printf("Celery Event Channel: Task event - %s [ID]: %s", x.Type, x.UUID)
                    } else if x, ok := ev.(*celeriac.Event); ok {
                        log.Printf("Celery Event Channel: General event - %s [Hostname]: %s - [Data]: %v", x.Type, x.Hostname, x.Data)
                    } else {
                        log.Printf("Celery Event Channel: Unhandled event: %v", ev)

Dispatching Tasks

By Name

This will create and dispatch a task incorporating the supplied data. The task will automatically be allocated and identified by a UUID returned in the task object. The UUID is represented in the form of "6ba7b810-9dad-11d1-80b4-00c04fd430c8".

// Dispatch a new task
taskName := "root.test.task"
taskData := map[string]interface{}{
    "foo": "bar"
routingKey := "root.test"

task, err := TaskQueueMgr.DispatchTask(taskName, taskData, routingKey)
if err != nil {
    log.Errorf("Failed to dispatch task to queue: %v", err)

By ID & Name

This will create and dispatch a task incorporating the supplied data, and identified by the user-supplied task identifier.

// Dispatch a new task
taskID := "my_task_id_123456789"
taskName := "root.test.task"
taskData := map[string]interface{}{
    "foo": "bar"
routingKey := "root.test"

task, err := TaskQueueMgr.DispatchTaskWithID(taskID, taskName, taskData, routingKey)
if err != nil {
    log.Errorf("Failed to dispatch task to queue: %v", err)

Modifying task_event.go

If you modify the properties of any the structs in task_event.go you will need to re-generate the easyjson version of this file. This is easily achieved by issuing the following command:

$ easyjson -all task_eventtest.go

Processing Redis Backend Result Automatically

If you are using a Redis backend for storing results you can easily process new/updated entries by subscribing to Redis keyspace events. This will save polling for results, and is made convenient to integrate by using my golang helper package go-redis-event-sink, available at the repo https://github.com/svcavallar/go-redis-event-sink

An example on how to use this is provided within the repository. Essentially, just provide it with the Celery task naming mask patten to watch: celery-task-meta-*