scheduler

SCHEDULER

This is a distributed scheduler based on RabbitMQ that allows you to execute tasks on specific time.

Supported task types

• Remote http (POST/GET with specified body)
• Local cmd
• Dummy (for testing or just for notification callback)

Prerequisites

• RabbitMQ ^3.8.x
• RabbitMQ Delayed Message Plugin installed
• docker
• docker-compose ^1.26.0 or higher
• go 1.15 or higher

Please note limitations of MQ delayed messages that are applied same for this project, eg. task can be scheduled up to ~47days from its publication date

Installation

docker-compose up -d --build --remove-orphans

By default, service will be available on port 8245 via grpc, monitoring via grafana on port 3000. Raw prometheus metrics exposed on 0.0.0.0:8457/metrics. Both Grafana and Prometheus included for demonstration purposes.

If you want to run it locally after cloning repository create config.yaml from config.example.yaml in project root directory and run go run main.go

Generated API and *.proto files are available here

Project includes client package for external integrations

You can install example application by running

GO111MODULE=on go get github.com/DoomSentinel/scheduler/cmd/scheduler-example

Usage

  scheduler-example --host=0.0.0.0 --port=8245  

Configuration

Configuration passed by environment variables, defaults defined in config.example.yaml in project root

Project maturity

Currently, not battle tested - therefore not ready for production usage. Needs more vespene gas tests.