Version information
This version is compatible with:
- Puppet Enterprise 2023.2.x, 2023.1.x, 2023.0.x, 2021.7.x, 2021.6.x, 2021.5.x, 2021.4.x, 2021.3.x, 2021.2.x, 2021.1.x, 2021.0.x, 2019.8.x, 2019.7.x, 2019.5.x, 2019.4.x, 2019.3.x, 2019.2.x, 2019.1.x, 2019.0.x, 2018.1.x, 2017.3.x, 2017.2.x, 2017.1.x, 2016.5.x, 2016.4.x
- Puppet >= 4.7.0 < 8.0.0
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Start using this module
Add this module to your Puppetfile:
mod 'puppetlabs-ruby_task_helper', '0.6.1'Learn more about managing modules with a PuppetfileDocumentation
puppetlabs/ruby_task_helper — version 0.6.1 May 31st 2022
Ruby Task Helper
A Ruby helper library for writing Puppet tasks. It provides a class that handles error generation, simplifies JSON input and output, and makes testing your task easier. It requires Bolt >= 1.1 or Puppet Enterprise >= 2019.0.
Table of Contents
Description
This library handles parsing JSON input, serializing the result as JSON output, and producing a formatted error message for errors.
Requirements
This library works with Ruby 2.3 and later, though is tested using Ruby 2.4 and 2.5.
Setup
To use this library, include this module in a Puppetfile:
mod 'puppetlabs-ruby_task_helper'
Add it to your task metadata
{
"files": ["ruby_task_helper/files/task_helper.rb"],
"input_method": "stdin"
}
Usage
When writing your task include the library in your script, extend the TaskHelper module, and write the task() function. The task() function should accept its parameters as symbols, and should return a hash. The following is an example of a task that uses the library. All parameters will be symbolized including nested hash keys and hashes contained in arrays.
mymodule/tasks/mytask.rb
#!/usr/bin/env ruby
require_relative "../../ruby_task_helper/files/task_helper.rb"
class MyClass < TaskHelper
def task(name: nil, **kwargs)
{greeting: "Hi, my name is #{name}"}
end
end
if __FILE__ == $0
MyClass.run
end
You can then run the task like any other Bolt task:
bolt task run mymodule::task -t target.example.com name="Robert'); DROP TABLE Students;--"
You can additionally provide detailed errors by raising a TaskError, such as
class MyTask < TaskHelper
def task(**kwargs)
raise TaskHelper::Error.new("my task error message",
"mytask/error-kind",
"Additional details")
Debugging
When writing your task, it can be helpful to write debugging statement to locate
the source of any errors. The library includes a debug method that accepts arbitrary
values and logs it as a debugging statement. If the task errors, the list of
debugging statements will be included in the resulting TaskError.
The list of debugging statements can also be accessed from the task itself by calling
the debug_statements method. This can be used to include the debugging statements in
a TaskError that you explicitly raise.
Adding a debugging statement:
debug "Result of method call: #{result}
Adding the list of debugging statements to a TaskError:
raise TaskHelper::Error.new("my task error message",
"mytask/error-kind",
"debug" => debug_statements)
Testing
By implementing the task as a method and not executing the task as a script unless it is invoked directly it becomes much easier to write rspec tests for your task. Make sure the task helper repo is checked out next to your module so the relative requires work and you can write simple unit tests for the methods of your task.
mymodule/spec/mytask_spec.rb
require_relative '../tasks/mytask.rb'
describe 'MyTask' do
let(:params) { { name: 'Lucy' } }
let(:task) { MyTask.new() }
it 'runs my task' do
expect(task.task(params)).to eq({greeting: 'Hi, my name is Lucy'})
end
end
Changelog
All notable changes to this project will be documented in this file.
Release 0.6.1
Bug fixes
- Fix bug in task invocation for authors running bolt with a ruby 3 interpreter.
Release 0.6.0
New features
- Increase maximum Puppet version to Puppet 8, making the module usable with Puppet 7.
Release 0.5.1
New features
-
Added a
debugmethod to add debugging statements to thedetailsfield of aTaskError. -
Added a
debug_statementsmethod to retrieve the current list of debugging statements.
Release 0.4.0
Bug fixes
- Previously error hashes were not wrapped under an
_errorkey causing bolt to ignore underlying error message. Now error hashes are wrapped under the expected_errorkey.
Release 0.3.0
Bug fixes
- Previously only top level parameter keys were symbolized. Now nested keys are also symbolized.
Release 0.2.0
Bug fixes
- Helper files should go in the
filesdirectory of a module to prevent them from being added to the puppet ruby loadpath or seen as tasks.
Release 0.1.0
This is the initial release.
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Malware scan results
Scan ResultScan Detail
Passed
The malware detection service on Puppet Forge is an automated process that identifies known malware in module releases before they’re published. It is not intended to replace your own virus scanning solution.
Learn more about malware scans- Module name:
- puppetlabs-ruby_task_helper
- Module version:
- 0.6.1
- Scan initiated:
- May 31st 2022, 15:49:11
- Detections:
- 0 / 57
- Scan stats:
- 57 undetected
- 0 harmless
- 0 failures
- 0 timeouts
- 0 malicious
- 0 suspicious
- 15 unsupported
- Scan report:
- View the detailed scan report