Puppet Function: docker_volumes_to_storage_maps

Defined in:
lib/puppet/functions/docker_volumes_to_storage_maps.rb
Function type:
Ruby 4.x API

Overview

docker_volumes_to_storage_maps(Array $docker_volumes, String $prefix) ⇒ Hash

This custom function converts an array of docker volumes to the storage_maps hash required by the pacemaker::resource::bundle resource. A prefix is added to each entry in the storage map to ensure the Puppet resources are unique.

Given:

docker_volumes = ["/src/vol1:/tgt/vol1", "/src/vol2:/tgt/vol2:ro"]
prefix = "my-prefix"

Returns:

storage_maps = {
  "my-prefix-src-vol1" => {
    "source-dir" => "/src/vol1",
    "target-dir" => "/tgt/vol1",
    "options"    => "rw",
  },
  "my-prefix-src-vol2" => {
    "source-dir" => "/src/vol2",
    "target-dir" => "/tgt/vol2",
    "options"    => "ro",
  }
}

Parameters:

  • docker_volumes (Array)
  • prefix (String)

Returns:

  • (Hash) 


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# File 'lib/puppet/functions/docker_volumes_to_storage_maps.rb', line 21

Puppet::Functions.create_function(:'docker_volumes_to_storage_maps') do
  dispatch :docker_volumes_to_storage_maps do
    param 'Array', :docker_volumes
    param 'String', :prefix
    return_type 'Hash'
  end

  def docker_volumes_to_storage_maps(docker_volumes, prefix)
    storage_maps = Hash.new
    docker_volumes.each do |docker_vol|
      source, target, options = docker_vol.split(":")
      unless options
        options = "rw"
      end
      storage_maps[prefix + source.gsub("/", "-")] = {
        "source-dir" => source,
        "target-dir" => target,
        "options"    => options,
      }
    end
    return storage_maps
  end
end