Class: Callme::DepFactory

Inherits:
Object
  • Object
show all
Defined in:
lib/callme/dep_factory.rb

Overview

Instantiates deps according to their scopes

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(const_loader, deps_metadata_storage) ⇒ DepFactory

Constructor

Parameters:



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# File 'lib/callme/dep_factory.rb', line 7

def initialize(const_loader, deps_metadata_storage)
  @const_loader           = const_loader
  @deps_metadata_storage  = deps_metadata_storage
  @singleton_scope        = Callme::Scopes::SingletonScope.new(self)
  @prototype_scope        = Callme::Scopes::PrototypeScope.new(self)
  @request_scope          = Callme::Scopes::RequestScope.new(self)
end

Instance Attribute Details

#const_loader ⇒ Object (readonly)

Returns the value of attribute const_loader.



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# File 'lib/callme/dep_factory.rb', line 3

def const_loader
  @const_loader
end

Instance Method Details

#create_dep_and_save(dep_metadata, deps_storage) ⇒ Object

Create new dep instance according to the specified dep_metadata

Parameters:

Returns:

  • dep instance

Raises:

  • MissingDepError if some of dep dependencies are not found



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# File 'lib/callme/dep_factory.rb', line 41

def create_dep_and_save(dep_metadata, deps_storage)
  if dep_metadata.dep_class.is_a?(Class)
    dep_class = dep_metadata.dep_class
  else
    dep_class = const_loader.load_const(dep_metadata.dep_class)
    dep_metadata.fetch_attrs!(dep_class)
  end
  dep = dep_metadata.instance ? dep_class.new : dep_class

  if dep_metadata.has_contract?
    contract_validator.validate(dep_class, dep_metadata.contract, const_loader)
  end

  if dep_metadata.has_factory_method?
    set_dep_dependencies(dep, dep_metadata)
    dep = dep.send(dep_metadata.factory_method)
    deps_storage[dep_metadata.name] = dep
  else
    # put to container first to prevent circular dependencies
    deps_storage[dep_metadata.name] = dep
    set_dep_dependencies(dep, dep_metadata)
  end

  dep
end

#delete_dep(name) ⇒ Object

Delete dep from the container by it’s name.

Parameters:

  • dep (Symbol) —

    name

Raises:

  • MissingDepError if dep with the specified name is not found



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# File 'lib/callme/dep_factory.rb', line 70

def delete_dep(name)
  dep_metadata = @deps_metadata_storage.by_name(name)
  unless dep_metadata
    raise Callme::Errors::MissingDepError, "Dep with name :#{name} is not defined"
  end
  get_scope_by_metadata(dep_metadata).delete_dep(dep_metadata)
end

#get_dep(name) ⇒ Object

Get dep from the container by it’s name. According to the dep scope it will be newly created or returned already instantiated dep

Parameters:

  • dep (Symbol) —

    name

Returns:

  • dep instance

Raises:

  • MissingDepError if dep with the specified name is not found



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# File 'lib/callme/dep_factory.rb', line 21

def get_dep(name)
  dep_metadata = @deps_metadata_storage.by_name(name)
  unless dep_metadata
    raise Callme::Errors::MissingDepError, "Dep with name :#{name} is not defined"
  end
  get_dep_with_metadata(dep_metadata)
end

#get_dep_with_metadata(dep_metadata) ⇒ Object

Get dep by the specified dep metadata

Parameters:

Returns:

  • dep instance



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# File 'lib/callme/dep_factory.rb', line 32

def get_dep_with_metadata(dep_metadata)
  get_scope_by_metadata(dep_metadata).get_dep(dep_metadata)
end