Cromtit - Asynchronous Cron Jobs Runner and More

TL;DR

See "Why?" section

---

Right after Raku 2022 online conference, where I presented Tomtit, an idea came into my mind.

What if combine Tomtit with cron jobs? This is how Cromtit was born ...

---

So, meet Cromtit - asynchronous cron job runner for Tomtit projects:

In nutshell if one has many Tomtit projects, they might run them as cron or manual jobs using Sparky asynchronous jobs engine.

Quick start

Install

zef install --/test Cromtit 

Step one

Define Cromtit configuration to describe all possible jobs:

projects:
  rakudo:
    path: ~/projects/rakudo
  r3:
    path: ~/projects/r3tool
    crontab: "30 * * * *"
    action: html-report
    options: --no_index_update
    before:
      -
        name: rakudo
        action: pull install 

Here we define one main project - "R3" that runs blackbox tests for Rakudo built from the new commits. Before this job is triggered, a dependency job - "Rakudo" gets executed - ensure that a new commit is checked out and a fresh Rakudo is built, installed and ready to test.

Step two

Apply configuration:

cromt

This step will convert Cromtit configuration into Sparky scenarios and Sparky will do it's job:

• Ensure that project "R3" will be executed every halve hour

• Reports and logs are accessible via Sparky web interface: http://127.0.0.1:4000

More

Of course this is very informal intro into Cromtit, one can get more details on documentation pages - https://github.com/melezhik/Cromtit

To spur more interest - some things to highlight. Cromtit allows:

• Nested job dependencies, where job A is dependent on job B and job B is dependent on job C and so on.

• Passing environment variables to jobs calls, so the same job could be called many times with different input parameters

• Manual job runs instead of cron style runs

Why?

You have a lot of local projects that you want to run as cron jobs, but without standard linux cron complexity and with some features like job dependencies and html reports.

---

That is it. Thanks for reading, comments and questions are always appreciated.