cartodb-4.29/lib/carto/storage.rb

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2020-06-15 10:58:47 +08:00
require 'singleton'
require 'carto/storage_options/s3'
require 'carto/storage_options/local'
module Carto
class Storage
include Singleton
def initialize
@storages = Hash.new
end
def for(location, preferred_type: nil)
proposed_location = get_or_set_location(location)
proposed_type = proposed_location.class.name.demodulize.downcase
if (preferred_type || proposed_type) == 'local'
Carto::StorageOptions::Local.new(location)
elsif proposed_type == (preferred_type || proposed_type)
proposed_location
else
available_storage_option.new(location)
end
end
private
def get_or_set_location(location)
existing_location = @storages[location]
if existing_location
existing_location
else
@storages[location] = available_storage_option.new(location)
end
end
def available_storage_option
s3_enabled? ? Carto::StorageOptions::S3 : Carto::StorageOptions::Local
end
def s3_enabled?
@s3_enabled ||= Carto::StorageOptions::S3.enabled?
end
end
end