Class: Ezid::BatchDownload

Inherits:
Hashie::Dash
  • Object
show all
Includes:
Hashie::Extensions::Coercion
Defined in:
lib/ezid/batch_download.rb

Constant Summary collapse

ANVL = 
"anvl".freeze
CSV = 
"csv".freeze
XML = 
"xml".freeze
FORMATS = 
[ ANVL, CSV, XML ].freeze
YES = 
"yes".freeze
NO = 
"no".freeze
BOOLEANS = 
[ YES, NO ].freeze
TEST = 
"test".freeze
REAL = 
"real".freeze
PERMANENCE = 
[ TEST, REAL ].freeze
ARK = 
"ark".freeze
DOI = 
"doi".freeze
URN = 
"urn".freeze
TYPES = 
[ ARK, DOI, URN, ].freeze
ID =

CSV Columns

"_id".freeze
MAPPED_CREATOR = 
"_mappedCreator".freeze
MAPPED_TITLE = 
"_mappedTitle".freeze
MAPPED_PUBLISHER = 
"_mappedPublisher".freeze
MAPPED_DATE = 
"_mappedDate".freeze
MAPPED_TYPE = 
"_mappedType".freeze
MAX_DOWNLOAD_TRIES = 
300
DOWNLOAD_RETRY_INTERVAL = 
1

Instance Method Summary collapse

Constructor Details

#initialize(format, args = {}) ⇒ BatchDownload

Returns a new instance of BatchDownload.



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# File 'lib/ezid/batch_download.rb', line 67

def initialize(format, args={})
  super(args.merge(format: format))
end

Instance Method Details

#download_file(path: nil) ⇒ Object Also known as: file 



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# File 'lib/ezid/batch_download.rb', line 89

def download_file(path: nil)
  path ||= Dir.getwd
  fullpath = File.directory?(path) ? File.join(path, download_filename) : path
  tries = 0
  ready = false

  print "Checking for download "
  Net::HTTP.start(download_uri.host, download_uri.port) do |http|
    while tries < MAX_DOWNLOAD_TRIES
      tries += 1
      sleep DOWNLOAD_RETRY_INTERVAL
      print "."
      response = http.head(download_uri.path)
      if response.code == '200'
        ready = true
        break
      end
    end
  end
  puts

  unless ready
    raise BatchDownloadError,
          "Download not ready after checking #{MAX_DOWNLOAD_TRIES} times."
  end

  File.open(fullpath, "wb") do |f|
    Net::HTTP.start(download_uri.host, download_uri.port) do |http|
      http.request_get(download_uri.path) do |response|
        response.read_body do |chunk|
          f.write(chunk)
        end
      end
    end
  end

  fullpath
end

#download_url ⇒ Object Also known as: url 



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# File 'lib/ezid/batch_download.rb', line 83

def download_url
  get_response.download_url
end

#get_response ⇒ Object 



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# File 'lib/ezid/batch_download.rb', line 75

def get_response
  @response ||= client.batch_download(params)
end

#params ⇒ Object 



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# File 'lib/ezid/batch_download.rb', line 71

def params
  to_h
end

#reload ⇒ Object 



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# File 'lib/ezid/batch_download.rb', line 79

def reload
  @response = nil
end