mod/carrierwave/set/abstract/attachment/cloud.rb
attr_writer :bucket
event :change_bucket_if_read_only, :initialize,
on: :update, when: :change_bucket_if_read_only? do
@storage_type = storage_type_from_config
end
def bucket
@bucket ||= cloud? && (new_card_bucket || bucket_from_content || bucket_from_config)
end
def new_card_bucket
return unless new_card?
# If the file is assigned before the bucket option we have to
# check if there is a bucket options in set_specific.
# That happens for exmaple when the file appears before the bucket in the
# options hash:
# Card.create file: file_handle, bucket: "my_bucket"
set_specific[:bucket] || set_specific["bucket"] || bucket_from_config
end
def bucket_config
@bucket_config ||= load_bucket_config
end
def load_bucket_config
return {} unless bucket
bucket_config = Cardio.config.file_buckets&.dig(bucket.to_sym) || {}
bucket_config.symbolize_keys!
bucket_config[:credentials]&.symbolize_keys!
# we don't want :attributes hash symbolized, so we can't use
# deep_symbolize_keys
ensure_bucket_config do
load_bucket_config_from_env bucket_config
end
end
def ensure_bucket_config
yield.tap do |config|
require_configuration! config
require_credentials! config
end
end
def require_configuration! config
cant_find_in_bucket! "configuration" unless config.present?
end
def require_credentials! config
cant_find_in_bucket! "credentials" unless config[:credentials]
end
def cant_find_in_bucket! need
raise Card::Error, "couldn't find #{need} for bucket #{bucket}"
end
def load_bucket_config_from_env config
config ||= {}
each_config_option_from_env do |key|
replace_with_env_variable config, key
end
credential_config config do |cred_hash|
load_bucket_credentials_from_env cred_hash
end
end
def credential_config config
config[:credentials] ||= {}
yield config[:credentials]
config.delete :credentials if config[:credentials].blank?
config
end
def each_config_option_from_env
CarrierWave::FileCardUploader::CONFIG_OPTIONS.each do |key|
yield key unless key.in? %i[attributes credentials]
end
end
def load_bucket_credentials_from_env cred_config
each_credential_from_env do |option|
replace_with_env_variable cred_config, option, "credentials"
end
end
def each_credential_from_env
regexp = credential_from_env_regexp
ENV.each_key do |env_key|
next unless (m = regexp.match env_key)
yield m[:option].downcase.to_sym
end
end
def credential_from_env_regexp
Regexp.new "^(?:#{bucket.to_s.upcase}_)?CREDENTIALS_(?<option>.+)$"
end
def replace_with_env_variable config, option, prefix=nil
env_key = [prefix, option].compact.join("_").upcase
new_value = ENV["#{bucket.to_s.upcase}_#{env_key}"] || ENV[env_key]
config[option] = new_value if new_value
end
def bucket_from_content
return unless content
content.match(/^\((?<bucket>[^)]+)\)/) { |m| m[:bucket] }
end
def bucket_from_config
cnf = Cardio.config
cnf.file_default_bucket || cnf.file_buckets&.keys&.first
end
def change_bucket_if_read_only?
cloud? && bucket_config[:read_only] && attachment_is_changing?
end