Class: Dry::System::ProviderRegistrar

Inherits:
Object
  • Object
show all
Defined in:
lib/dry/system/provider_registrar.rb

Overview

Default provider registrar implementation

This is currently configured by default for every Dry::System::Container. The provider registrar is responsible for loading provider files and exposing an API for running the provider lifecycle steps.

Since:

  • 1.1.0

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(container) ⇒ ProviderRegistrar

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns a new instance of ProviderRegistrar.

Since:

  • 1.1.0



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# File 'lib/dry/system/provider_registrar.rb', line 34

def initialize(container)
  @providers = {}
  @container = container
end

Instance Attribute Details

#container ⇒ Object (readonly) Also known as: target_container

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Since:

  • 1.1.0



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# File 'lib/dry/system/provider_registrar.rb', line 23

def container
  @container
end

#providers ⇒ Object (readonly)

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Since:

  • 1.1.0



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# File 'lib/dry/system/provider_registrar.rb', line 20

def providers
  @providers
end

Instance Method Details

#[](provider_name) ⇒ Dry::System::Provider? Also known as: find_and_load_provider

Returns a provider if it can be found or loaded, otherwise nil

Returns:

Since:

  • 1.1.0



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# File 'lib/dry/system/provider_registrar.rb', line 92

def [](provider_name)
  provider_name = provider_name.to_sym

  if (provider = providers[provider_name])
    return provider
  end

  return if finalized?

  require_provider_file(provider_name)

  providers[provider_name]
end

#finalize! ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Since:

  • 1.1.0



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# File 'lib/dry/system/provider_registrar.rb', line 158

def finalize!
  provider_files.each do |path|
    load_provider(path)
  end

  providers.each_value(&:start)

  freeze
end

#freeze ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Since:

  • 1.1.0



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# File 'lib/dry/system/provider_registrar.rb', line 40

def freeze
  providers.freeze
  super
end

#key?(provider_name) ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns:

  • (Boolean)

Since:

  • 1.1.0



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# File 'lib/dry/system/provider_registrar.rb', line 110

def key?(provider_name)
  providers.key?(provider_name)
end

#prepare(provider_name) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Since:

  • 1.1.0



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# File 'lib/dry/system/provider_registrar.rb', line 182

def prepare(provider_name)
  with_provider(provider_name, &:prepare)
  self
end

#provider_files ⇒ Array<Pathname>

Returns all provider files within the configured provider_paths.

Searches for files in the order of the configured provider_paths. In the case of multiple identically-named boot files within different provider_paths, the file found first will be returned, and other matching files will be discarded.

This method is public to allow other tools extending dry-system (like dry-rails) to access a canonical list of real, in-use provider files.

Returns:

  • (Array<Pathname>)

See Also:

  • Container.provider_paths

Since:

  • 1.1.0



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# File 'lib/dry/system/provider_registrar.rb', line 127

def provider_files
  @provider_files ||= provider_paths.each_with_object([[], []]) { |path, (provider_files, loaded)| # rubocop:disable Layout/LineLength
    files = Dir["#{path}/#{RB_GLOB}"].sort

    files.each do |file|
      basename = File.basename(file)

      unless loaded.include?(basename)
        provider_files << Pathname(file)
        loaded << basename
      end
    end
  }.first
end

#provider_source_class ⇒ Object

Extension point for subclasses to customize their provider source superclass. Expected to be a subclass of Dry::System::Provider::Source

Since:

  • 1.1.0



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# File 'lib/dry/system/provider_registrar.rb', line 148

def provider_source_class = Dry::System::Provider::Source

#provider_source_options ⇒ Object

Extension point for subclasses to customize initialization params for provider_source_class

Since:

  • 1.1.0



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# File 'lib/dry/system/provider_registrar.rb', line 155

def provider_source_options = {}

#register_provider(name, from: nil, source: nil, if: true, **provider_options, &block) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Raises:

See Also:

Since:

  • 1.1.0



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# File 'lib/dry/system/provider_registrar.rb', line 49

def register_provider(name, from: nil, source: nil, if: true, **provider_options, &block)
  raise ProviderAlreadyRegisteredError, name if providers.key?(name)

  if from && source.is_a?(Class)
    raise ArgumentError, "You must supply a block when using a provider source"
  end

  if block && source.is_a?(Class)
    raise ArgumentError, "You must supply only a `source:` option or a block, not both"
  end

  return self unless binding.local_variable_get(:if)

  provider =
    if from
      build_provider_from_source(
        name,
        source: source || name,
        group: from,
        options: provider_options,
        &block
      )
    else
      build_provider(
        name,
        source: source,
        options: provider_options,
        &block
      )
    end

  providers[provider.name] = provider

  self
end

#shutdown ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Since:

  • 1.1.0



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# File 'lib/dry/system/provider_registrar.rb', line 176

def shutdown
  providers.each_value(&:stop)
  self
end

#start(provider_name) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Since:

  • 1.1.0



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# File 'lib/dry/system/provider_registrar.rb', line 188

def start(provider_name)
  with_provider(provider_name, &:start)
  self
end

#stop(provider_name) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Since:

  • 1.1.0



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# File 'lib/dry/system/provider_registrar.rb', line 194

def stop(provider_name)
  with_provider(provider_name, &:stop)
  self
end