Class: Ratonvirus::Storage::Multi

Inherits:
Base
  • Object
show all
Defined in:
lib/ratonvirus/storage/multi.rb

Overview

Multi storage allows the developers to configure multiple storage backends for the application at the same time. For instance, in case the scanner is used for both: scanning the Active Storage resources as well as scanning file paths, they are handled with separate storages.

To configure the Multi-storage with two backends, use the following: Ratonvirus.storage = :multi, [:filepath, :active_storage]

Instance Attribute Summary

Attributes inherited from Base

#config

Instance Method Summary collapse

Methods inherited from Base

#asset_path, #asset_remove, #initialize

Constructor Details

This class inherits a constructor from Ratonvirus::Storage::Base

Instance Method Details

#accept?(resource) ⇒ Boolean

Check if any of the storages accept the resource.

Returns:

  • (Boolean) 


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# File 'lib/ratonvirus/storage/multi.rb', line 59

def accept?(resource)
  storage_for(resource) do |_storage|
    return true
  end

  false
end

#changed?(record, attribute) ⇒ Boolean

Fetch the resource from the record using the attribute and check if any storages accept that resource. If an accepting storage is found, only check changed? against that storage. Otherwise, call the changed? method passing both given parameters for all storages in order and return in case one of them reports the resource to be changed.

Returns:

  • (Boolean) 


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# File 'lib/ratonvirus/storage/multi.rb', line 48

def changed?(record, attribute)
  resource = record.public_send(attribute)

  storage_for(resource) do |storage|
    return storage.changed?(record, attribute)
  end

  false
end

#process(resource, &block) ⇒ Object

Processing of the resource is handled by the first storage in the list that returns true for accept?(resource). Any consequent storages are skipped.



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# File 'lib/ratonvirus/storage/multi.rb', line 35

def process(resource, &block)
  return unless block_given?

  storage_for(resource) do |storage|
    storage.process(resource, &block)
  end
end

#setup ⇒ Object

Setup the @storages array with the initialized storage instances.



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# File 'lib/ratonvirus/storage/multi.rb', line 14

def setup
  @storages = []

  return unless config[:storages].is_a?(Array)

  config[:storages].each do |storage|
    if storage.is_a?(Array)
      type = storage[0]
      storage_config = storage[1]
    else
      type = storage
    end

    cls = Ratonvirus.backend_class("Storage", type)
    @storages << cls.new(storage_config || {})
  end
end