Class: Docker::Template::Meta

Inherits:
Object
  • Object
show all
Extended by:
Forwardable::Extended
Defined in:
lib/docker/template/meta.rb

Constant Summary collapse

DEFAULTS =

– rubocop:enable Style/MultilineBlockLayout –

HashWithIndifferentAccess.new({
  "squash" => true,
  "startup" => true,
  "aliases" => {},
  "push" => false,
  "build" => true,
  "cache" => false,
  "type" => "normal",
  "local_prefix" => "local",
  "project_data_dir" => "docker",
  "rootfs_base_img" => "envygeeks/alpine",
  "maintainer" => "Random User <[email protected]>",
  "user" => ENV["USER"] || ENV["USERNAME"] || "random",
  "name" => Template.root.basename.to_s,
  "project_copy_dir" => "project",
  "rootfs_template" => "alpine",
  "cache_dir" => "cache",
  "repos_dir" => "repos",
  "copy_dir" => "copy",
  "tag" => "latest",
  "clean" => false,
  "tty" => false,
  "tags" => {},

  #

  "log_filters" => [
    /^The push refers to a repository/,
    /\sdigest: sha256:/
  ],

  #

  "project_copy_ignore" => %w(
    .git
    .bundle
    Dockerfile
    vendor/bundle
    .gitattributes
    .node_modules
    .gitignore
    docker
    tmp
    log
  ),
}).freeze

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(overrides, root: nil) ⇒ Meta

– Create a new instance of self.class.

“‘ – rubocop:disable Metrics/AbcSize –

Examples:

“‘

self.class.new({
  :hello => :world
})

Parameters:

  • data (Hash, self.class) —

    • the main data.

  • root (Hash, self.class) (defaults to: nil) —

    • the root data.



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# File 'lib/docker/template/meta.rb', line 102

def initialize(overrides, root: nil)
  overrides = overrides.to_h :raw => true if overrides.is_a?(self.class)
  root = root.to_h :raw => true if root.is_a?(self.class)

  if root.nil?
    if Template.project?
      load_project_config(
        overrides
      )

    else
      load_normal_config(
        overrides
      )
    end

    @root = true
  else
    @data = overrides.stringify.with_indifferent_access
    @root_data = root.stringify.with_indifferent_access
  end

  debug!
  normalize!
  return
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(method, *args, shell: false, &block) ⇒ Object (private) 



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# File 'lib/docker/template/meta.rb', line 670

def method_missing(method, *args, shell: false, &block)
  key  = method.to_s.gsub(/\?$/, "")
  val  = self[key] || self[key.singularize] \
          || self[key.pluralize]

  if !args.empty? || block_given?
    super

  elsif method !~ /\?$/
    string_wrapper(val, {
      :shell => shell
    })

  else
    val = val.fallback if val.is_a?(self.class) && val.queryable?
    [true, false].include?(val) ? val : \
      if val.respond_to?(:empty?)
        then !val.empty? else !!val
      end
  end
end

Instance Attribute Details

#data ⇒ Object (readonly)

Returns the value of attribute data.



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# File 'lib/docker/template/meta.rb', line 13

def data
  @data
end

Class Method Details

.opts_file(force: nil) ⇒ Object 



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# File 'lib/docker/template/meta.rb', line 81

def opts_file(force: nil)
  if force == :project || Template.project?
    then "docker/template.yml" else "opts.yml"
  end
end

Instance Method Details

#[](key) ⇒ Object

Note:

we make the getter slightly more indifferent because of tags.

– Pull an indifferent key from the hash. –

Parameters:

  • key (Anything()) —

    the key you wish to pull.



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# File 'lib/docker/template/meta.rb', line 216

def [](key)
  val = begin
    if key =~ /^\d+\.\d+$/
      @data[key] || @data[
        key.to_f
      ]

    elsif key =~ /^\d+$/
      @data[key] || @data[
        key.to_i
      ]

    else
      @data[key]
    end
  end

  if val.is_a?(Hash)
    return self.class.new(val, {
      :root => root_data
    })
  end

  val
end

#[]=(key, val) ⇒ Object

–



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# File 'lib/docker/template/meta.rb', line 244

def []=(key, val)
  hash = { key => val }.stringify
  @data.update(
    hash
  )
end

#alias? ⇒ Boolean

– Checks to see if the current meta is an alias of another. This happens when the user has the tag in aliases but it’s not complex. –

Returns:

  • (Boolean) 


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# File 'lib/docker/template/meta.rb', line 447

def alias?
  !!(aliased_tag && aliased_tag != tag)
end

#aliased_group(tag: current_tag) ⇒ Object

–



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# File 'lib/docker/template/meta.rb', line 486

def aliased_group(tag: current_tag)
  root_data[:tags][aliased_tag({
    :tag => tag
  })]
end

#aliased_tag(tag: current_tag) ⇒ Object

–



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# File 'lib/docker/template/meta.rb', line 472

def aliased_tag(tag: current_tag)
  aliases = root_data[:aliases]
  if aliases.nil? || !aliases.key?(tag)
    tag

  else
    aliases[
      tag
    ]
  end
end

#by_group(group: current_group, query_data: @data) ⇒ Object

–



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# File 'lib/docker/template/meta.rb', line 410

def by_group(group: current_group, query_data: @data)
  if query_data.is_a?(self.class)
    then query_data.by_group({
      :group => group
    })

  elsif !query_data || !query_data.is_a?(Hash)
    return nil

  else
    query_data.fetch("group", {}).fetch(
      group, nil
    )
  end
end

#by_parent_group(tag: current_tag, query_data: @data) ⇒ Object

–



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# File 'lib/docker/template/meta.rb', line 428

def by_parent_group(tag: current_tag, query_data: @data)
  if aliased_tag == current_tag || !complex_alias?
    return nil

  else
    by_group({
      :query_data => query_data,
      :group => aliased_group({
        :tag => tag
      })
    })
  end
end

#by_parent_tag(tag: current_tag, query_data: @data) ⇒ Object

–



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# File 'lib/docker/template/meta.rb', line 394

def by_parent_tag(tag: current_tag, query_data: @data)
  if aliased_tag == current_tag || !complex_alias?
    return nil

  else
    by_tag({
      :query_data => query_data,
      :tag => aliased_tag({
        :tag => tag
      })
    })
  end
end

#by_tag(tag: current_tag, query_data: @data) ⇒ Object

–



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# File 'lib/docker/template/meta.rb', line 376

def by_tag(tag: current_tag, query_data: @data)
  if query_data.is_a?(self.class)
    then query_data.by_tag({
      :tag => tag
    })

  elsif !query_data || !query_data.is_a?(Hash)
    return nil

  else
    query_data.fetch("tag", {}).fetch(
      tag, nil
    )
  end
end

#complex_alias? ⇒ Boolean

– A complex alias happens when the user has an alias but also tries to add extra data, this allows them to use data from all parties. This allows them to reap the benefits of having shared data but sometimes independent data that diverges into it’s own. –

Returns:

  • (Boolean) 


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# File 'lib/docker/template/meta.rb', line 458

def complex_alias?
  if !alias?
    return false

  else
    !!root_data.find do |_, v|
      (v.is_a?(self.class) || v.is_a?(Hash)) && queryable?(:query_data => v) \
        && by_tag(:query_data => v)
    end
  end
end

#current_group ⇒ Object Also known as: group

–



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# File 'lib/docker/template/meta.rb', line 622

def current_group
  root_data[:tags][current_tag] ||
    "normal"
end

#debug! ⇒ Object

–



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# File 'lib/docker/template/meta.rb', line 147

def debug!
  if root? && root_data["debug"]
    if !key?(:env) || self[:env].queryable?
      self[:env] ||= {}

      merge!({
        :env => {
          :all => {
            :DEBUG => true
          }
        }
      })
    end
  end
end

#fallback(group: current_group, tag: current_tag, query_data: @data) ⇒ Object

– Fallback, determining which route is the best. Tag > Group > All. – rubocop:disable Metrics/CyclomaticComplexity rubocop:disable Metrics/PerceivedComplexity –



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# File 'lib/docker/template/meta.rb', line 335

def fallback(group: current_group, tag: current_tag, query_data: @data)
  if query_data.is_a?(self.class)
    then query_data.fallback({
      :group => group, :tag => tag
    })

  elsif !query_data || !query_data.is_a?(Hash) || query_data.empty?
    return nil

  else
    if !(v = by_tag(:tag => tag, :query_data => query_data)).nil? then return v
      elsif !(v = by_parent_tag(:tag => tag, :query_data => query_data)).nil? then return v
      elsif !(v = by_group(:group => group, :query_data => query_data)).nil? then return v
      elsif !(v = by_parent_group(:tag => tag, :query_data => query_data)).nil? then return v
      else return for_all(:query_data => query_data)
    end
  end
end

#for_all(query_data: @data) ⇒ Object

– rubocop:enable Metrics/CyclomaticComplexity rubocop:enable Metrics/PerceivedComplexity –



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# File 'lib/docker/template/meta.rb', line 359

def for_all(query_data: @data)
  if query_data.is_a?(self.class)
    then query_data \
      .for_all

  elsif !query_data || !query_data.is_a?(Hash)
    return nil

  else
    query_data.fetch(
      "all", nil
    )
  end
end

#groups ⇒ Object

– HELPER: Get a list of all the groups. –



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# File 'lib/docker/template/meta.rb', line 639

def groups
  root_data["tags"].values.uniq
end

#include?(val) ⇒ Boolean

– Check if a part of the hash or a value is inside. –

Examples:

meta.include?(:key => :val) => true|false

meta.include?(:key) => true|false

Parameters:

  • val (Anytning(), Hash) —

    • The key or key => val you wish check.

Returns:

  • (Boolean) 


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# File 'lib/docker/template/meta.rb', line 193

def include?(val)
  if val.is_a?(Hash)
    then val.stringify.each do |k, v|
      unless @data.key?(k) && @data[k] == v
        return false
      end
    end

  else
    return @data.include?(
      val
    )
  end

  true
end

#merge(new_) ⇒ Object Also known as: deep_merge

– Merge a hash into the meta. If you merge non-queryable data it will then get merged into the queryable data. –



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# File 'lib/docker/template/meta.rb', line 278

def merge(new_)
  if !queryable?(:query_data => new_) && queryable?
    new_ = {
      :all => new_
    }
  end

  new_ = new_.stringify
  self.class.new(@data.deep_merge(new_), {
    :root => root_data
  })
end

#merge!(new_) ⇒ Object

– Destructive merging (@see self#merge) –



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# File 'lib/docker/template/meta.rb', line 295

def merge!(new_)
  if !queryable?(:query_data => new_) && queryable?
    new_ = {
      :all => new_
    }
  end

  @data = @data.deep_merge(
    new_.stringify
  )

  self
end

#mergeable_array?(key = nil) ⇒ Boolean

–

Returns:

  • (Boolean) 


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# File 'lib/docker/template/meta.rb', line 602

def mergeable_array?(key = nil)
  return false unless queryable?
  vals = [by_parent_tag, by_parent_group, \
    by_tag, for_all, by_group].compact

  if key
    vals = vals.map do |val|
      val[key]
    end
  end

  !vals.empty? && !vals.any? do |val|
    !val.is_a?(
      Array
    )
  end
end

#mergeable_hash?(key = nil) ⇒ Boolean

– rubocop:enable Metrics/AbcSize –

Returns:

  • (Boolean) 


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# File 'lib/docker/template/meta.rb', line 582

def mergeable_hash?(key = nil)
  return false unless queryable?
  vals = [by_parent_tag, by_parent_group, \
    by_tag, for_all, by_group].compact

  if key
    vals = vals.map do |val|
      val[key]
    end
  end

  !vals.empty? && !vals.any? do |val|
    !val.is_a?(Hash) && !val.is_a?(
      self.class
    )
  end
end

#normalize! ⇒ Object

–



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# File 'lib/docker/template/meta.rb', line 131

def normalize!
  if root?
    opts = {
      :allowed_keys => [],
      :allowed_vals => []
    }

    merge!({
      "tags"    => @data[   "tags"].stringify(**opts),
      "aliases" => @data["aliases"].stringify(**opts)
    })
  end
end

#queryable?(query_data: @data) ⇒ Boolean

– Check if a hash is queryable. AKA has “all”, “group”, “tag”. –

Returns:

  • (Boolean) 


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# File 'lib/docker/template/meta.rb', line 313

def queryable?(query_data: @data)
  if query_data.is_a?(self.class)
    then query_data
      .queryable?

  elsif !query_data || !query_data.is_a?(Hash) || query_data.empty?
    return false

  else
    (query_data.keys - %w(
      group tag all
    )).empty?
  end
end

#root ⇒ Object

–



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# File 'lib/docker/template/meta.rb', line 171

def root
  if Template.project?
    then return Template.root.join(root_data[
      :project_data_dir
    ])

  else
    Template.root.join(
      root_data[:repos_dir], root_data[
        :name
      ]
    )
  end
end

#root_data ⇒ Object

–



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# File 'lib/docker/template/meta.rb', line 165

def root_data
  return @root_data || @data
end

#tags ⇒ Object

– HELPER: Get a list of all the tags. –



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# File 'lib/docker/template/meta.rb', line 631

def tags
  (root_data[:tags] || {}).keys | (root_data[:aliases] || {}).keys
end

#to_a(raw: false, shell: false) ⇒ Object

– rubocop:disable Metrics/CyclomaticComplexity rubocop:disable Metrics/PerceivedComplexity –



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# File 'lib/docker/template/meta.rb', line 516

def to_a(raw: false, shell: false)
  if raw
    return to_h({
      :raw => true
    }).to_a

  elsif !mergeable_array?
    to_h.each_with_object([]) do |(k, v), a|
      a << "#{k}=#{
        shell ? v.to_s.shellescape : v
      }"
    end
  else
    (for_all || []) | (by_parent_group || []) | (by_group || []) | \
      (by_parent_tag || []) | (by_tag || [])
  end
end

#to_enum ⇒ Object

–



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# File 'lib/docker/template/meta.rb', line 261

def to_enum
  @data.each_with_object({}) do |(k, v), h|
    if v.is_a?(Hash)
      then v = self.class.new(v, {
        :root => root_data
      })
    end

    h[k] = v
  end.to_enum
end

#to_h(raw: false) ⇒ Object

– rubocop:eanble Metrics/CyclomaticComplexity rubocop:eanble Metrics/PerceivedComplexity – Convert a ‘Meta’ into a normal hash. If ‘self’ is queryable then we go and start merging values smartly. This means that we will merge all the arrays into one another and we will merge hashes into hashes. – rubocop:disable Metrics/AbcSize –



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# File 'lib/docker/template/meta.rb', line 545

def to_h(raw: false)
  return @data.to_h if raw || !queryable? || !mergeable_hash?
  keys = [for_all, by_group, by_parent_group, by_tag, \
    by_parent_tag].compact.map(&:keys)

  keys.reduce(:+).each_with_object({}) do |k, h|
    vals = [for_all, by_group, by_parent_group, by_tag, \
      by_parent_tag].compact

    h[k] = \
      if mergeable_array?(k)
        vals.map { |v| v[k].to_a } \
          .compact.reduce(
            :+
          )

      elsif mergeable_hash?(k)
        vals.map { |v| v[k].to_h } \
          .compact.reduce(
            :deep_merge
          )

      else
        vals.find do |v|
          v.key?(
            k
          )
        end \
        [k]
      end
  end
end

#to_s(raw: false, shell: false) ⇒ Object

– Converts the current meta into a string. –



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# File 'lib/docker/template/meta.rb', line 496

def to_s(raw: false, shell: false)
  if !raw && (mergeable_hash? || mergeable_array?)
    to_a(:shell => shell).join(" #{
      "\n" if shell
    }")

  elsif !raw && queryable?
    then fallback \
      .to_s

  else
    @data.to_s
  end
end

#update(hash) ⇒ Object

–



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# File 'lib/docker/template/meta.rb', line 253

def update(hash)
  @data.update(
    hash.stringify
  )
end