Jobs server

HTTP server that can give an evaluation order of tasks

Setup

1. mix deps.get
2. mix run --no-halt

Docker setup

1. docker build -t job_server .
2. docker run -p 3000:3000 -d job_server:latest

Endpoint(s)

/get_execution_order

Example request:
curl -X POST -H "Accept: application/json" -d @data.json http://localhost:3000/get_execution_order

Expects a JSON with the following structure:

{
  "tasks": [
    {
      "name": "task-name",
      "command": "touch file",
      "requires": ["required-task-name"]
    }
    ...
  ]
}

Where

• "name" is the task name and uniquely identifies the task.
• "command" is a shell executable command
• "requires" is a list of task names representing the tasks that should be executed prior to the given task

Returns the given tasks in a correct order for evaluation.
Depending on the Accept header of the request, two types of responses are implemented - JSON and plain text.
Example JSON response

{
  "tasks": [
    {
      "name": "task_name_1",
      "command": "touch file_1",
    },
    {
      "name": "task_name_2",
      "command": "touch file_2",
    }
    ...
  ]
}

The plain text response is meant to be executed via bash
Example plain text response

#!/usr/bin/env bash 

touch file_1
touch file_2

Possible error responses

• 422
  • If the request body does not have "tasks" property
  • If a required property is missing
  • If there is a task requirement that does not exist in the list of tasks
• 400 if there is a cyclic dependency between the tasks