The PDK Templates is the default templates repository for use with the Puppet Development Kit, within which we have defined all the templates for the creation and configuration of a module. Look into these directories to find the templates:

• moduleroot templates get deployed on new module, convert and update; use them to enforce a common boilerplate for central files.
• moduleroot_init templates get only deployed when the target module does not yet exist; use them to provide skeletons for files the developer needs to modify heavily.
• object_templates templates are used by the various new ... commands for classes, defined types, etc.

PDK builds the configuration of the module by reading a set of default configuration from config_defaults.yml and merging it with the contents of .sync.yml from module's root directory, if exists. Top-level keys of the resulting hash correspond to target files or represent a global configuration. Global configuration will be merged with the configuration hash for a particular target file. This allows a module developer to override/amend the configuration by putting new values into .sync.yml. A knockout prefix may be applied to elements within .sync.yml to remove elements from the default set. Target files are created by rendering a corresponding template which is referring its configuration via the @configs hash. The data for a target file may include delete: true or unmanaged: true in order to have the particular file removed from the module or left unmanaged, respectively. The PDK can also be configured to make files executable if the file is executable in the template by including manage_execute_permissions: true in the data for the target file or globally via the common config key.

• Basic usage
• Values of config_defaults
• Making local changes to the Template
• Further Notes

Templates like this one can be used in conjunction with the PDK. As default the PDK itself uses the templates within this repository to render files for use within a module. Templates can be passed to the PDK as a flag for several of the commands.

pdk convert --template-url https://github.com/puppetlabs/pdk-templates

Please note that the template only needs to be passed in once if you wish to change it, every command run on the PDK will use the last specified template. For more on basic usage and more detailed description of the PDK in action please refer to the PDK documentation.

The following is a description and explanation of each of the keys within config_defaults. This will help clarify the default settings we choose to apply to pdk modules.

Settings common to all templates

A .gitattributes file in your repo allows you to ensure consistent git settings.

A .gitignore file in your repo allows you to specify intentionally untracked files to ignore.

These workflows are depending on puppet-internal resources and are currently not suited for public consumption. Feel free to take them as inspiration how to run some tests on Github Actions. Please let us know at [email protected] what you come up with!

The auto release workflows prepares a module release PR. By default the workflow can be triggered manually when a release preparation PR needs to be created, however it allows setting a cron based trigger that can run automatically. To set up the automated release cron you can add a configuration to your .sync.yml file that matches the following example:

release_schedule:
   cron: '0 3 * * 6'

In this example the automated release prep workflow is triggered every Saturday at 3 am.

A .pdkignore file in your repo allows you to specify files to ignore when building a module package with pdk build.

YARD is a documentation generation tool for the Ruby programming language. It enables the user to generate consistent, usable documentation that can be exported to a number of formats very easily, and also supports extending for custom Ruby constructs such as custom class level definitions.

Rake is a Make-like program implemented in Ruby. Tasks and dependencies are specified in standard Ruby syntax within the Rakefile, present in the root directory of the code repository. Within modules context Rake tasks are used quite frequently, from ensuring the integrity of a module, running validation and tests, to tasks for releasing modules.

Rakefile:
  extras:
  - 'PuppetSyntax.exclude_paths = ["plans/**/.pp","central/modules/deployments/plans/**/.pp"]'

RuboCop is a Ruby static code analyzer. We use Rubocop to enforce a level of quality and consistency within Ruby code. Rubocop can be configured within .rubocop.yml which is located in the root directory of the code repository. Rubocop works by defining a sanitized list of cops that'll cleanup a code base without much effort, all of which support autocorrect and that are fairly uncontroversial across wide segments of the Community.

A Gemfile is a file we create which is used for describing gem dependencies for Ruby programs. All modules should have an associated Gemfile for installing the relevant gems. As development and testing is somewhat consistant between modules we have used the template to define a set of gems relevant to these processes.

Within each Gem group defined using the options above one or more gem item definitions may be listed in an array. Each item in that array must be a gem item hash.

The spec/default_facts.yml file contains a list of facts to be used by default when running rspec tests

---
networking:
  ip: "172.16.254.254"
  ip6: "FE80:0000:0000:0000:AAAA:AAAA:AAAA"
  mac: "AA:AA:AA:AA:AA:AA"
is_pe: false

The spec/spec_helper.rb file contains setup for rspec tests

While we provide a basic template it is likely that it will not match what you need exactly, as such we allow it to be altered or added to through the use of the .sync.yml file.

Values can be added to the data passed to the templates by adding them to your local .sync.yml file, thus allowing you to make changes such as testing against additional operating systems or adding new rubocop rules.

To add a value to an array simply place it into the .sync.yml file as shown below, here I am adding an additional unit test run against Puppet 4:

.travis.yml:
  includes:
    - env: PUPPET_GEM_VERSION="~> 4.0" CHECK=parallel_spec
      rvm: 2.1.9

Values can be removed from the data passed to the templates using the knockout prefix --- in .sync.yml.

To remove a value from an array, prefix the value ---. For example, to remove 2.5.1 from the ruby_versions array in .travis.yml:

.travis.yml:
  ruby_versions:
    - '---2.5.1'

To remove a key from a hash, set the value to ---. For example, to remove the ip fact from spec/default_facts.yml:

spec/default_facts.yml:
  networking:
    ip: '---'

To add a custom internal puppet-lint plugin served from an internal Rubygems source, add an entry similar to the following in .sync.yml file and run pdk update.

Gemfile:
  optional:
    ':development':
      - gem: 'puppet-lint-my_awesome_custom_module'
        version: '>= 2.0'
        source: 'https://myrubygems.example.com/'

Please note that the early version of this template contained only a 'moduleroot' directory, and did not have a 'moduleroot_init'. The PDK 'pdk new module' command will still work with templates that only have 'moduleroot', however the 'pdk convert' command will fail if the template does not have a 'moduleroot_init' directory present. To remedy this please use the up to date version of the template.

As explained in Use GitHub actions at your own risk, when running github actions from outside the organisation, there is a risk that symbolic references get taken over by malicious actors. Similar things happened before in other ecosystems and other packaging registries. The blog post goes on to suggest pinning to specific SHAs and provides some tooling to do so. The downsides for us are that the tooling doesn't work well with our ERB templating, and the additional cost of updating the SHAs across all modules. Instead we fork at-risk actions into the puppetlabs namespace and use them from there. This allows us to consume updates at our pace and deploy changes across all modules without delay, while avoiding actions that surreptitiously change while we're not looking.

Since this still has some overhead, we exclude some "big-name" action maintainers:

• Anything maintained by Github, e.g. https://github.com/actions
• Anything maintained as part of a bigger OSS project we're using, like https://github.com/ruby/setup-ruby
• Anything maintained by a Puppet employee

To keep efforts low when updating actions, we list all forked actions here. To keep confusion to a minimum, the version we use is always on a pdk-templates-v1 branch. This way we can update (git fetch/git push) forked repositories with no prejudice, test out the changes, and only then update the pdk-templates-v1 branch. That said, the branches used in pdk-templates should only contain upstream code and changes already in an upstream PR to minimize the diff we're carrying. If we later need to support multiple versions of an action as we roll out changes, we can increment the -v1 part in the branch name to manage multiple versions.

• kvrhdn/gha-buildevents ➡️ puppetlabs/kvrhdn-gha-buildevents
• Gamesight/slack-workflow-status ➡️ puppetlabs/Gamesight-slack-workflow-status

The repos have restricted access only to @modules team members.