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Versions: 22
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Stored size: 1.37 KB
Contents
module RelatonNist
class PubsExport
include Singleton
DOMAIN = "https://csrc.nist.gov".freeze
PUBS_EXPORT = URI.join(DOMAIN, "/CSRC/media/feeds/metanorma/pubs-export")
DATAFILEDIR = File.expand_path ".relaton/nist", Dir.home
DATAFILE = File.expand_path "pubs-export.zip", DATAFILEDIR
def initialize
@mutex = Mutex.new
end
#
# Fetches json data form server
#
# @return [Array<Hash>] json data
#
def data
@mutex.synchronize do
@data ||= begin
ctime = File.ctime DATAFILE if File.exist? DATAFILE
if !ctime || ctime.to_date < Date.today || File.size(DATAFILE).zero?
fetch_data(ctime)
end
unzip
end
end
end
private
#
# Fetch data form server and save it to file
#
# @prarm ctime [Time, nil] file creation time
#
def fetch_data(ctime)
if !ctime || ctime < OpenURI.open_uri("#{PUBS_EXPORT}.meta").last_modified
@data = nil
uri_open = URI.method(:open) || Kernel.method(:open)
FileUtils.mkdir_p DATAFILEDIR
IO.copy_stream(uri_open.call("#{PUBS_EXPORT}.zip"), DATAFILE)
end
end
#
# upack zip file
#
# @return [Array<Hash>] json data
#
def unzip
Zip::File.open(DATAFILE) do |zf|
JSON.parse zf.first.get_input_stream.read
end
end
end
end
Version data entries
22 entries across 22 versions & 1 rubygems